JP2017164751A - Detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detection device capable of outputting a signal which represents circumstances of the working performed by a working member highly accurately.SOLUTION: A detection device includes a force value derivation part, a distance value derivation part and a processing part. The force value derivation part derives a force value as a value which represents a force received by a working member from an object to be worked when the working member performs working of the object to be worked. The distance value derivation part derives a distance value which represents a distance between the object to be worked and the working member when performing the working. The processing part outputs a signal which represents circumstances of the working by means of a derivation profile as a relation between the force value and the distance value regarding the processing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a detection device for detecting a machining situation.

  When a workpiece is processed by a processing apparatus that processes the workpiece while the processing member is in contact with the workpiece, a plurality of processing situations may occur. The processing situation is typically a processing failure due to various causes. In order to quickly take appropriate measures for various machining situations, it is important to quickly identify the type of machining situation actually performed. This is because if the type of the processing status is not known, it is not possible to examine the treatment for the processing status. For example, when the cause of the malfunction that is the machining status is in the workpiece conveyance system, the treatment for the conveyance system should be considered. Further, for example, when the cause of the malfunction is in the processing member, replacement of the processing member should be considered. In addition, for example, when the cause of the malfunction is in the workpiece, a predetermined treatment should be considered for the workpiece. Even if a measure is taken without specifying the type of defect that is the processing status, there is a possibility that the measure is a useless treatment that does not cure the defect.

  Patent Document 1 discloses a defect detection apparatus for detecting a defect of a processing apparatus that processes a workpiece by applying a force to a processing member. The defect detection device disclosed in Patent Document 1 can detect a defect between a punch and a die, which is a shearing mold, based on a change in the relative position between the punch and the die. Here, the punch is a processing member that processes a workpiece by applying a force to the processing member.

JP 2010-260113 A

  However, the method disclosed in Patent Document 1 can only detect defects in a shearing mold that is a processing member. As described in [Background Technology], there are several cases other than those due to defects in the processing members, even if only processing defects are considered. Can be done.

  An object of this invention is to provide the detection apparatus which can output the signal which represents the condition of the process which the process member performed with high precision.

  The detection device of the present invention includes a force value deriving unit, a distance value deriving unit, and a processing unit. The force value deriving unit derives a force value that is a value representing a force received by the processing member from the workpiece when the processing member processes the workpiece. The distance value deriving unit derives a distance value that is a value representing a distance between the workpiece and the processing member when performing the processing. The processing unit outputs a signal representing the state of the processing based on the derived profile that is a relationship between the force value and the distance value related to the processing.

  The detection device of the present invention can output a signal representing the state of processing performed by the processing member with higher accuracy.

It is a conceptual diagram showing the structural example of the processing apparatus of this embodiment. It is a conceptual diagram showing the 1st variation of the installation position of a force value derivation | leading-out part. It is a conceptual diagram showing the 2nd variation of the installation position of a force value derivation | leading-out part. It is a conceptual diagram (the 1) showing the shearing operation example of a to-be-sheared object. It is a conceptual diagram (the 2) showing the shearing operation example of a to-be-sheared object. It is a conceptual diagram (the 3) showing the shearing operation example of a to-be-sheared object. It is a conceptual diagram (the 4) showing the shearing operation example of a to-be-sheared object. It is a conceptual diagram (the 5) showing the shearing operation example of a to-be-sheared object. It is an image figure showing the example of a derivation profile. It is an image figure showing the example of shearing operation by a processing derivation part when there are two to-be-sheared objects (the 1). It is an image figure showing the example of shearing operation by a processing derivation part when there are two to-be-sheared objects (the 2). It is an image figure showing the example of shearing operation by a processing derivation part when there are two to-be-sheared objects (the 3). It is an image figure showing the example of shearing operation by a processing derivation part when there are two to-be-sheared objects (the 4). It is an image figure showing the example of a shearing operation by the process derivation | leading-out part supposing the case where a raise occurs (the 1). It is an image figure (the 2) showing the example of a shearing operation by the process derivation | leading-out part supposing the case where a raise occurs. It is an image figure (the 3) showing the example of a shearing operation by the process derivation | leading-out part supposing the case where a raise occurs. It is an image figure showing the example of the shearing operation by the process derivation | leading-out part supposing the case where a raise occurs (the 4). It is an image figure (the 5) showing the example of a shearing operation by the process derivation | leading-out part supposing the case where a raise occurs. It is an image figure showing the example of a processing derivation part shearing operation when the thickness of an object to be sheared is thin. It is an image figure (example 2) showing the processing derivation | leading-out part shearing operation example in case the thickness of a to-be-sheared object is thin. It is an image figure (the 3) showing the processing derivation | leading-out part shearing operation example in case the thickness of a to-be-sheared object is thin. It is an image figure (example 4) showing the example of a process derivation | leading-out part shearing operation in case the thickness of a to-be-sheared object is thin. It is an image figure showing the example of various derivation profiles. It is a conceptual diagram showing the example of a processing flow of the process which a processing apparatus performs. It is an image figure showing the maximum value of the force value in each derivation profile. It is an image figure showing the range of the distance value exceeding a predetermined force value in each derivation profile. It is an image figure showing the example of a display which displayed the presence / absence and kind of abnormality which a derivation profile and the derivation profile express. It is a conceptual diagram showing the minimum structure of the detection apparatus of this invention.

First, when a processing device that processes an object with a processing member (jig) is a processing device for shearing that sandwiches a material to be sheared between a punch and a die and shears the material to be sheared with a punch Will be explained.
[Configuration and operation]
FIG. 1 is a conceptual diagram showing a configuration of a processing apparatus 11a that is an example of the processing apparatus of the present embodiment. FIG. 1 also shows an object to be sheared 112a, which is an object to be subjected to shearing by the processing apparatus 11a.

  The processing apparatus 11a includes a processing derivation unit 108a, a processing unit 111a, and an output unit 113a.

  The processing derivation unit 108a includes a moved unit 105a, a driving unit 107a, a member 114a, and a die 102a.

  The moved part 105a includes a member 114b, a force value deriving part 109a, pressing parts 115a and 115b, elastic parts 116a and 116b, and a punch 101a.

  In the following description, the top, bottom, left, and right refer to the top, bottom, left, and right when facing the drawing to be explained.

  The punch 101a and the die 102a shear a sheared object 112a installed between a male punch 101a and a female die 102a in which an opening is formed at a position facing the lower surface of the punch 101a. This is a shearing die for processing. The shearing is performed by the punch 101a entering a predetermined position of the die 102a with the object to be sheared 112a interposed. The punch 101a and the die 102a are commercially available for shearing.

  The member 114a keeps the distance between the surface 181a and the surface 181f of the member 114a constant. The shape of the member 114a is arbitrary as long as the distance between the surface 181a and the surface 181f is kept constant. A metal or the like can be used for the member 114a.

  A die 102a is installed on the surface 181f of the member 114a. Although FIG. 1 shows the case where the die 102a is directly installed on the surface 181f, another member may be inserted between the lower end of the die 102a and the surface 181f.

  The distance value deriving unit 106a derives a value representing the distance between the predetermined position of the punch 101a and the surface 181e that is the upper surface of the die 102a (hereinafter referred to as “distance value”) from time to time. Then, the distance value deriving unit 106a sequentially sends information including the derived distance value to the processing unit 111a. For the distance value deriving unit 106a, for example, a commercially available eddy current sensor or a laser distance meter can be used.

  Here, the distance value may be any value as long as it represents a distance between a predetermined position of the die 102a and a predetermined position of the punch 101a.

  The distance value may be, for example, the distance between the surface 181e of the die 102a and the surface 181c of the member 114b. It is assumed that the distance between the end 171a of the punch 101a and the surface 181c is constant. Therefore, the distance between the surface 181e of the die 102a and the surface 181c of the member 114b represents the distance between the surface 181e of the die 102a and the end 171a of the punch 101a. The distance value may be a value representing a distance from a certain position of the distance value deriving unit 106a installed on the die 102a to the surface 181c, for example. The distance value may be, for example, the distance from the surface 181f of the member 114a to the surface 181c of the member 114b.

  1 shows an example in which the distance value deriving unit 106a is installed on the surface 181e of the die 102a. However, the installation position of the distance value deriving unit 106a is arbitrary as long as the distance value can be derived. It is. The distance value deriving unit 106a may be installed on the surface 181c of the member 114b, for example. Further, the distance value deriving unit 106a may be divided into a plurality of parts.

  The upper end of the drive unit 107a is fixed to the surface 181a of the member 114a.

  The drive unit 107a is a part that can change the distance between the upper end and the lower end of the drive unit 107a. As the drive unit 107a, a drive unit used in a commercially available shearing apparatus can be used. Since the upper end of the drive unit 107a is fixed to the surface 181a of the member 114a, changing the distance between the upper end and the lower end of the drive unit 107a changes the distance between the lower end of the drive unit 107a and the surface 181f of the member 114a. Will do. And the to-be-moved part 105a is being fixed to the lower surface of the drive part 107a. Therefore, the drive unit 107a can move the moved unit 105a closer to or away from the surface 181f.

  The punch 101a, the elastic portion 116a, the elastic portion 116b, and the force value deriving portion 109a are connected to the member 114b of the moved portion 105a.

  The force value deriving unit 109a derives a value representing the force applied between two predetermined locations of the force value deriving unit 109a (hereinafter referred to as “force value”) from time to time. Then, the force value deriving unit 109a sequentially sends the derived force value to the processing unit 111a. For the force value deriving unit 109a, for example, a commercially available load measuring meter can be used.

  The elastic part 116a and the elastic part 116b are elastic members that can expand and contract in a direction parallel to the direction of the arrow 191a.

  The presser 115a is connected to the lower end of the elastic part 116a, and the presser 115b is connected to the lower end of the elastic part 116b. The presser part 115a and the presser part 115b are parts that suppress the object to be sheared 112a by the elastic force of the elastic parts 116a and 116b when the punch 101a and the die 102a shear the object to be sheared 112a.

  The processing unit 111a records the force values that the force value deriving unit 109a sequentially sends to the processing unit 111a in a recording unit (not shown) in association with the time when the force values are received. Here, it is assumed that the time when the processing unit 111a receives the force value is equal to the time when the force value is derived by the force value deriving unit 109a.

  Further, the processing unit 111a records the distance values that the distance value deriving unit 106a sequentially sends to the processing unit 111a in association with the time when the distance values are received in a recording unit (not shown). Here, it is assumed that the time at which the processing unit 111a receives the distance value is equal to the time at which the distance value deriving unit 106a derives the distance value.

  The processing unit 111a obtains a relationship between the force value and the distance value (hereinafter referred to as “derivation profile”) from the time change of the force value and the time change of the distance value recorded in the recording unit. Then, the processing unit 111a records the derived profile in the recording unit.

  In the recording unit, conditions for specifying the presence and type of shear abnormality represented by the derived profile are recorded in advance. Then, the processing unit 111a reads the condition from the recording unit. Then, the processing unit 111a compares the derived profile recorded in the recording unit with the condition, and specifies the presence and type of the shear abnormality represented by the derived profile. Then, the processing unit 111a sends a signal including information indicating the presence / absence and type of the identified shear abnormality to the output unit 113a and causes the output unit 113a to output the signal.

  The output unit 113a outputs information instructed by the processing unit 111a. The output unit 113a is a display unit that displays information indicating the presence and type of the specified shear abnormality, for example. When the output unit 113a is a display unit, the display unit may display a plurality of derived profiles and display the presence and type of shear abnormality for each derived profile.

  Variations can be assumed in the installation position of the force value deriving unit 109a in the processing deriving unit 108a.

  FIG. 2 is a conceptual diagram showing a first variation of the installation position of the force value deriving unit 109a. The force value deriving portion 109a illustrated in FIG. 2 is inserted between the surface 181c of the member 114b and the upper end of the punch 101a.

  FIG. 3 is a conceptual diagram showing a second variation of the installation position of the force value deriving unit 109a. Unlike the cases shown in FIGS. 1 and 2, the moved part 105a shown in FIG. 3 does not include the force value deriving part 109a. 3 is inserted between the lower end of the die 102a and the surface 181f of the member 114a.

  Next, the operation of the processing apparatus 11a shown in FIG. 1 will be described in more detail.

  4 to 8 are conceptual diagrams illustrating an example of the shearing operation of the workpiece 112a by the processing derivation unit 108a. 4 to 8 also show the object to be sheared 112a.

  FIG. 4 shows the processing derivation unit 108a before starting the shearing operation. The processing derivation unit 108a is the same as the state shown in FIG. From the state shown in FIG. 4, the drive unit 107 a increases the distance between its upper end and lower end. Thereby, the moved part 105a falls in the direction of the arrow 191a.

  Then, as shown in FIG. 5, the lower ends of the presser portions 115a and 115b are in contact with a surface 181d that is the upper surface of the object to be sheared 112a. The force applied to the surface 181c of the member 114b from the upper ends of the elastic portions 116a and 116b is applied to the force value deriving portion 109a from the upper surface of the member 114b due to the contact with the lower surface 181d of the holding portions 115a and 115b. The force value deriving unit 109a detects the applied force. The force value deriving unit 109a sends the force value derived from the detected force to the processing unit 111a shown in FIG.

  And the drive part 107a lengthens the distance of an own upper end and a lower end, and further lowers the punch 101a. As shown in FIG. 6, the end 171a, which is the lower end of the punch 101a, contacts the object to be sheared 112a and starts shearing the object to be sheared 112a. On the surface 181c of the member 114b, in addition to the elastic force from the upper ends of the elastic portions 116a and 116b, a force applied by the material to be sheared 112a to the end portion 171a of the punch 101a is applied from the upper end of the punch 101a. The upper surface of the member 114b applies an elastic force from the upper ends of the elastic portions 116a and 116b and a force applied by the material to be sheared 112a to the end portion 171a of the punch 101a to the force value deriving portion 109a.

  Next, the drive unit 107a further lowers the punch 101a. Then, as shown in FIG. 7, the punch 101a pushes the portion immediately below the punch 101a of the object to be sheared 112a downward to shear the object to be sheared 112a. In the state shown in FIG. 7, the already-sheared object 119a is separated from the sheared object 112a. Therefore, the force value deriving unit 109a does not detect the force from the object to be sheared 119a. In the state shown in FIG. 7, the force value deriving unit 109a detects the force applied to itself by the elastic portions 116a and 116b via the surface 181c.

  Then, as shown in FIG. 8, the drive unit 107a moves the moved unit 105a upward. In the state shown in FIG. 8, the already-sheared object 119a has fallen downward.

  FIG. 9 is an image diagram showing a profile 211a which is an example of a derived profile derived by the processing unit 111a. The profile 211a is a derived profile that assumes a case where shearing is normally performed. In FIG. 9, the distance value represents a shorter distance as it moves to the right. On the other hand, the force value represents a larger force as it moves upward.

  The same applies to other derived profiles in that the distance value represents a shorter distance as it moves to the right, and represents a greater force as the force value moves upward.

  In addition, the code | symbol used for description of FIG. 9 is a code | symbol of the structure represented in FIG.

  As the distance value moves to the right, detection of force by the force value deriving unit 109a starts at the distance value 201b. This is because the lower ends of the presser portions 115a and 115b come into contact with the object to be sheared as shown in FIG.

  Then, between the distance value 201b and the distance value 201d, the force value increases as the distance value shifts to the right. The increase in the force value between the distance value 201b and the distance value 201d is an increase in the elastic force that the elastic portions 116a and 116b apply to the force value deriving portion 109a via the surface 181c due to the elastic portions 116a and 116b contracting. Represent.

  When the distance value further shifts to the right from the distance value 201d, the slope of the profile 211a becomes steep. The reason why the slope of the profile 211a is steep is that, at the distance value 201d, the end portion 171a of the punch 101a hits the object to be sheared 112a and starts receiving a force from the object to be sheared 112a.

  When the distance value further shifts to the right, the force value reaches a peak at the distance value 201e and then decreases. The force value decreases to the right of the distance value 201e because the portion to be sheared 112a under the punch 101a begins to move away from the surrounding sheared material 112a and the rate of separation gradually increases. is there.

  In the distance value 201f, it is assumed that the shearing object 112a has already been sheared.

  Note that FIG. 9 is an example of a derivation profile, and the derivation profile actually derived is often a profile somewhat deviated from that shown in FIG. 9 due to measurement errors and the like.

  Next, an example of shearing when there are two objects to be sheared will be described.

  10 to 13 are image diagrams showing an example of shearing operation by the processing derivation unit 108a when there are two objects to be sheared. 10 to 13 also show the objects to be sheared 112a and 112ab.

  FIG. 10 shows a state before shearing by the processing derivation unit 108a. On the die 102a, there is further an object to be sheared 112ab on the surface 181d of the object to be sheared 112a.

  FIG. 11 shows a state in which the lower ends of the presser portions 115a and 115b are in contact with the surface 181da of the sheared object 112ab. When the state shown in FIG. 11 is compared with the state shown in FIG. 5, the distance between the surface 181f and the surface 181c is longer in the direction shown in FIG. 11 by the thickness of the object to be sheared 112ab. That is, the detection by the force value deriving unit 109a of the force by the elastic members 116a and 116b starts at a longer distance value.

  FIG. 12 shows a state where the end 171a of the punch 101a is in contact with the surface 181da. When the punch 101a further descends from the state shown in FIG. 12, the shearing objects 112a and 112ab begin to shear. The object to be sheared 112a and the object to be sheared 112ab are sheared by the punch 101a and the die 102a in a semi-integrated state. When there are two objects to be sheared, that is, the object to be sheared 112a and the object to be sheared 112ab, the force required for shearing becomes larger than the case of only the object to be sheared 112a. Accordingly, the force value deriving unit 109a receives a larger force from the object to be sheared.

  FIG. 13 shows a state immediately after the object to be sheared 112a and the object to be sheared 112ab are sheared. In the state shown in FIG. 13, the already-sheared object 119a and the already-sheared object 119ab are separated from the sheared object 112a and the sheared object 112ab after shearing. Accordingly, the force detected by the force value deriving unit 109a is mainly an elastic force received by the member 114b from the elastic part 116a and the elastic part 116b and transmitted to the force value deriving unit 109a. The distance between the surface 181c and the surface 181e in the state illustrated in FIG. 13 is equal to the distance between the surface 181c and the surface 181e in the state illustrated in FIG.

  Next, an example of a shearing operation assuming a case in which scumming occurs will be described.

  FIG. 14 to FIG. 18 are image diagrams showing an example of a shearing operation by the processing derivation unit 108a assuming a case where a scouring occurs. 14 to 18 also show the objects to be sheared 112a and 112ac.

  In the raising, the already-sheared object that has been sheared before is not lifted down as shown in FIG. 8, but is attached to the end 171a of the punch 101a and lifted. Then, when the already sheared object that has been lifted shears the next sheared object, it is usually displaced laterally from the end 171a and is sheared together with the next sheared object on the next sheared object. .

  The lifted already-sheared object in the uplift is a kind of foreign matter placed on the object to be sheared before shearing.

  FIG. 14 shows a state before shearing by the processing derivation unit 108a. The to-be-sheared object 112ac is obtained by shifting the already-sheared object (see the already-sheared object 119a in FIG. 7) due to the shearing performed before the state shown in FIG. The to-be-sheared object 112ac is on the to-be-sheared object 112a to be sheared. From the state shown in FIG. 14, the processing derivation unit 108a causes the driving unit 107a to lower the moved unit 105a.

  FIG. 15 shows a state in which the lower end of the presser part 115b is in contact with the upper surface 181d of the sheared object 112ac. When the lower end of the pressing portion 115b comes into contact with the upper surface 181dc of the object to be sheared 112ac, the surface 181c of the member 114b receives an elastic force from the elastic portion 116b. Therefore, the force value deriving unit 109a detects the force. The contact of the presser 115b with the object to be sheared starts when the surface 181e and the surface 181c are far from each other as compared with the case where the object to be sheared shown in FIG. 5 is only the object to be sheared 112a. This is because the shearing object 112ac is present on the shearing object 112a.

  FIG. 16 shows a state where the lower end of the presser part 115a is in contact with the surface 181d of the sheared object 112a. The elastic portion 116a starts to apply an elastic force to the surface 181c of the member 114b when the lower end of the pressing portion 115a contacts the surface 181d of the object to be sheared 112a. Therefore, the force value deriving unit 109a detects the elastic force from the elastic part 116a and the elastic part 116b via the member 114b.

  FIG. 17 shows a state in which a part of the end portion 171a of the punch 101a is in contact with the surface 181dc of the object to be sheared 112ac. A part of the end portion 171a of the punch 101a contacts the object to be sheared 112ac, so that the force received by the end portion 171a from the surface 181dc is transmitted to the force value deriving portion 109a via the punch 101a and the member 114b. Therefore, the force value deriving unit 109a detects a force larger than the elastic force from the elastic part 116a and the elastic part 116b. The end 171a of the punch 101a integrally shears the sheared object 112a and the sheared object 112ac in a portion where the sheared object 112a and the sheared object 112ac overlap. On the other hand, the end 171a shears the object to be sheared 112a only in the part to be sheared 112a. In the portion where the object to be sheared 112a and the object to be sheared 112ac overlap each other, the end portion 171a receives a greater force from the upper surface of the object to be sheared during shearing compared to the portion only of the object to be sheared 112a. Therefore, the maximum value of the force value detected by the force value deriving unit 109a is larger than that in the case where the object to be sheared is only the object to be sheared 112a shown in FIG. However, the maximum value of the force value detected by the force value deriving unit 109a is smaller than that in the case of two objects to be sheared, that is, the sheared object 112a and the sheared object 112ab shown in FIG. This is because the force received by the end portion 171a from the upper surface of the sheared object is smaller in the portion having only the sheared object 112a than in the portion where the sheared object 112a and the sheared object 112ac overlap.

  FIG. 18 shows a state immediately after the objects to be sheared 112a and 112ac are sheared. In the state shown in FIG. 18, the already-sheared objects 119a and 119ac are separated from the objects to be sheared 112a and 112ac. Therefore, the force detected by the force value deriving unit 109a is mainly the elastic force received from the elastic parts 116a and 116b. Further, the distance between the surface 181e and the surface 181c shown in FIG. 18 is substantially equal to the distance between the surface 181e and the surface 181c shown in FIGS.

  Next, the case where the film thickness of the sheared object is deviated from the design value will be described by taking the case where the film thickness of the sheared object is thin as an example.

  19 to 22 are image diagrams showing an example of shearing operation by the processing derivation unit 108a when the thickness of the object to be sheared is thin. 19 to 22 also show the object to be sheared 112ad.

  FIG. 19 shows a state before shearing by the processing derivation unit 108a. An object to be sheared 112ad is installed on the die 102a.

  FIG. 20 illustrates a state where the lower ends of the presser portions 115a and 115b are in contact with the surface 181dd of the object to be sheared 112ab. When the state shown in FIG. 20 is compared with the state shown in FIG. 5, the surface 181f and the surface 181c shown in FIG. 20 are equal to the thickness of the object 112ad to be sheared smaller than the thickness of the object 112a shown in FIG. The distance to is short. That is, the detection by the force value deriving unit 109a of the elastic force by the elastic members 116a and 116b starts at a shorter distance value.

  FIG. 21 shows a state where the end 171a of the punch 101a is in contact with the surface 181d. When the punch 101a is further lowered from the state shown in FIG. 21, the shearing object 112ad starts shearing. The thickness of the object to be sheared 112ad is thinner than the thickness of the object to be sheared 112a shown in FIG. Therefore, the shearing object 112ad requires less force for shearing than the shearing object 112a. Accordingly, the force value deriving unit 109a detects a smaller force.

  FIG. 22 shows a state immediately after the object to be sheared 112ad is sheared. In the state shown in FIG. 22, the already-sheared object 119ad is separated from the sheared object 112ad after shearing. Therefore, the force detected by the force value deriving unit 109a is mainly the elastic force from the elastic part 116a and the elastic part 116b. The distance between the surface 181c and the surface 181e in the state illustrated in FIG. 22 is equal to the distance between the surface 181c and the surface 181e in the state illustrated in FIG.

  FIG. 23 is an image diagram illustrating examples of various derived profiles. The profile 211a corresponds to an example of the shearing operation of the processing derivation unit 108a shown in FIGS. 4 to 8 assuming that a sheared object having a normal thickness and no abnormality is sheared. The profile 211a is the same as the derived profile 211a shown in FIG. The profile 211b corresponds to a shearing operation example of the processing derivation unit 108a shown in FIGS. 10 to 13 assuming that a sheared object having two normal thickness sheared objects is sheared. The profile 211c is an example of the shearing operation of the processing derivation unit 108a shown in FIGS. 14 to 18 assuming that a sheared object in which a sheared object is superimposed on a sheared object having a normal thickness is sheared. Corresponding to The profile 211d corresponds to a shearing operation example of the processing derivation unit 108a shown in FIGS. 19 to 22 assuming that a sheared object having a thickness smaller than a normal thickness is sheared.

  As shown in FIG. 23, in the profile 211a, the force value starts to rise at the force value 201b.

  Further, in the profiles 211b and 211c, the force value starts to increase at a distance value 201g representing a larger distance on the left side of the distance value 201b. When two objects to be sheared overlap, as shown in FIGS. 11 and 15, even if the distance between the surface 181c and the surface 181e is longer than the distance between the surface 181c and the surface 181e shown in FIG. This corresponds to the start of detection of force by the force value deriving unit 109a.

  The distance value 201h at which the force value rises in the profile 211d is a distance value that represents a shorter distance on the right side of the distance value 201b. When the film thickness of the sheared object is thin, as shown in FIG. 20, the distance between the surface 181c and the surface 181e becomes closer than the distance between the surface 181c and the surface 181e shown in FIG. This corresponds to the start of detection of force by the value deriving unit 109a.

  FIG. 23 shows an example of an image of the derived profile, and the actually derived derived profile is often a profile deviated from that shown in FIG. 23 due to the influence of the measurement error or the like.

  As shown in FIG. 23, originally, the distance value at which the force detection by the force value deriving unit 109a starts should be approximately equal between the case where two objects to be sheared overlap each other and the case where they rise. In addition, when normal, the distance value should represent a shorter distance, and when the film to be sheared is thin, the distance value should represent a shorter distance. However, the rising of the force detected by the force value deriving unit 109a is gentle as shown in FIG. In many cases, it is difficult to improve the detection accuracy with which the force value deriving unit 109a detects a force and the accuracy with which the distance value between the surface 181c and the surface 181e is derived. Therefore, it may be difficult to specify the distance value at which the force detected by the force value deriving unit 109a rises.

  On the other hand, when the profiles 211a, 211b, 211c and 211d themselves shown in FIG. 23 are compared, the difference between them is obvious. As described above, the derivation profile actually derived is often a profile deviated from that shown in FIG. 23 due to the influence of the measurement error or the like. However, the difference between the derivation profiles is still somewhat different from the measurement error or the like. The probability of reversing is low.

Thus, as will be described later, it is effective to specify the type of shear failure by selecting the type of value derived from the obtained derivation profile.
[Processing flow]
FIG. 24 is a conceptual diagram illustrating a processing flow example of processing performed by the processing apparatus 11a illustrated in FIG. In each process shown in the following figure, the description to the left of the colon symbol represents the processing subject. In each process shown in the following figure, the description to the right of the colon symbol represents the processing content.

  First, the processing unit 111a sets conditions for identifying the presence and type of shear failure represented by the derived value as the processing of S101. The derived value is a predetermined value derived from the derived profile. The derived value and the condition will be described later.

  Next, the processing derivation unit 108a and the processing unit 111a perform shearing of the object to be sheared and obtain a derivation profile related to the shearing as processing of S102. The image of shearing performed by the processing derivation unit 108a is as described with reference to FIGS. 4 to 8 and FIGS. The processing unit 111a derives a derived profile from the time change of the distance value received from the distance value deriving unit 106a and the time change of the force value received from the force value deriving unit 109a during the shearing.

  Next, the processing unit 111a obtains a derived value from the derived derivation profile as the process of S103. Derived values will be described later.

  And the process part 111a collates the derived value calculated | required by the process of S103 with the conditions set by the process of S101 as a process of S104. Then, the presence and type of shear abnormality corresponding to the derived value obtained by the process of S103 is derived.

  Then, the processing unit 111a causes the output unit 113a to output the presence / absence and type of shear abnormality derived by the processing of S104 as the processing of S105.

  More preferably, the derived value is a value that significantly represents the characteristics of the derived profile.

  As the derived value, for example, the maximum value of force values in each derived profile (hereinafter referred to as “maximum force value”) can be used. As shown in FIG. 25, the maximum force values of the derived profiles of the profiles 211a, 211b, 211c, and 211d are force values 206a, 206b, 206c, and 206d in this order, and the maximum force values are more clearly defined by the derived profiles. Is different. For this reason, it is assumed that the probability that the maximum force value of each derived profile is reversed is low even if there is a slight decrease in measurement accuracy or measurement variation.

  Further, for example, a range of distance values exceeding a predetermined force value can be used as the derived value. FIG. 26 is an image diagram showing a range of distance values exceeding a predetermined force value in each derived profile. Assuming the force value 206a, the range of distance values where the profiles 201a, 201b, 201c and 201d exceed the force value 206a is as follows. That is, in this order, the range is between the distance value 201fa and the distance value 201ga, the distance value 201fb and the distance value 201gb, the distance value 201fc and the distance value 201gc, and the distance value 201fd and the distance value 201gd. The values representing these ranges not only represent the characteristics of each derived profile, but also the differences between the derived profiles are significant. Therefore, even if there is a slight decrease in measurement accuracy or measurement variation, it is assumed that the probability that the values representing the range of these distance values are reversed is low.

  Alternatively, as the derived value, for example, an integrated value for the distance value of the force value in each derived profile can be used.

  Alternatively, as a derived value, an integrated value for a distance value of a difference between each derived profile and a typical derived profile can be used. Here, a typical derivation profile is, for example, a derivation profile that is assumed to have no abnormality.

  Alternatively, a value other than the above that represents the similarity between each derived profile and a typical derived profile can be used as the derived value.

  As the derived value, a value obtained by combining two or more derived values described above can be used. The value obtained by combining the two or more derived values is, for example, a value obtained by multiplying the maximum force value and a value representing a range of distance values exceeding a predetermined force value.

  In this way, by using a derived value obtained by combining two or more derived values, it may be possible to improve the determination system of the presence / absence of a defect and the type.

  Moreover, the said conditions are conditions for specifying the presence and kind of shear abnormality which a derived value represents, for example.

  This condition is, for example, the following condition when the derived value is the maximum force value.

  Here, it is assumed that the values A, B, and C increase in this order. And when the maximum force value of a certain derivation profile is larger than the value C, the abnormality which the two to-be-sheared objects have overlapped is specified. Further, when the maximum force value of a certain derived profile is between the value B and the value C, a dull defect is identified. When the maximum force value of a certain derived profile is between the value A and the value B, normal is specified. When the maximum force value of a certain derived profile is smaller than the value A, an abnormality in which the film thickness of the object to be sheared is thin is specified.

  Alternatively, the condition may be a combination of a plurality of conditions set for each of a plurality of types of derived values.

  For example, it is assumed that the derived value is both a maximum force value and a value representing a range of distance values exceeding a predetermined force value (hereinafter referred to as “distance range value”). In that case, the said conditions are conditions for performing the following specification.

  Here, regarding the maximum force value, the value D, the value E, the value F, the value G, the value H, the value I, and the value J are assumed to be smaller in this order. Regarding the distance range value, the value d, the value e, the value f, the value g, the value h, and the value i are assumed to be smaller in this order.

  When the maximum force value of a certain derived profile is greater than the value D, an abnormality in which two objects to be sheared overlap is specified regardless of the distance range value. If the maximum force value is equal to or less than the value E and greater than the value F, the distance range value is determined. When the maximum force value is equal to or less than the value E and greater than the value F and the distance range value is greater than the value d, an abnormality in which two objects to be sheared overlap is specified. In addition, when the maximum force value is equal to or less than the value E and greater than the value F and the distance range value is equal to or less than the value d, an abnormality of a dull up defect is specified. Further, when the maximum force value is equal to or less than the value F and greater than the value G, an abnormality of a dull up defect is specified regardless of the distance range value. If the maximum force value is less than the value G and greater than the value H, the distance range value is determined. If the maximum force value is less than or equal to the value G and greater than the value H, and the distance range value is greater than the value e, an abnormality of a dull rise is identified. Further, when the maximum force value is equal to or less than the value G and greater than the value H and the distance range value is equal to or less than the value e, it is specified that the value is normal. Further, when the maximum force value is equal to or less than the value H and greater than the value I, it is specified that the value is normal regardless of the distance range value. If the maximum force value is less than or equal to value I and greater than value J, the distance range value is determined. When the maximum force value is equal to or less than the value I and greater than the value J, and the distance range value is greater than f, it is specified that the value is normal. Further, when the maximum force value is equal to or less than the value I and greater than the value J and the distance range value is equal to or less than the value f, an abnormality in which the film thickness of the object to be sheared is thin is specified. Furthermore, when the maximum force value is equal to or less than the value J, an abnormality in which the thickness of the object to be sheared is thin is specified regardless of the distance range value.

  As described above, there is a case where the presence / absence of a defect and the type determination system can be improved by using a combination of conditions set for each of a plurality of types of derived values.

  As described above, the processing apparatus according to the present embodiment derives a derived profile that is a relationship between the distance value between the punch and the die and the force value when the workpiece is sheared. As described above, the derived profile significantly reflects the presence and type of abnormality during shearing. Accordingly, by determining whether the derived value derived from the derived profile satisfies a predetermined condition, it is possible to determine the presence / absence and type of an abnormality during shearing with higher accuracy.

  As described above, the output unit 113a may be a display unit. And the said display part may display a derivation profile, and may display the presence and type and the kind of shear abnormality about each derivation profile.

  FIG. 27 is an image diagram illustrating an example of display performed by the output unit 113a displaying a plurality of derived profiles and the presence and type of shearing abnormalities represented by the respective derived profiles.

FIG. 27 shows frames 296a to 296c and displays 297a to 297c in addition to the profiles 211a to 211d that are derived profiles. The frames 296a to 296c and the displays 297a to 297c are associated with each other in this order. The fact that the peak of a certain measurement profile is within the range of the frame 296a indicates that an abnormality of abnormality type 1 which is the content of the display 297a has occurred in the shear associated with the measurement profile. In addition, the fact that the peak of a certain measurement profile is within the range of the frame 296b indicates that the shear related to that measurement profile was normal, which is the content of the display 297b. In addition, the fact that the peak of a certain measurement profile is within the range of the frame 296c indicates that the shear related to the measurement profile was an abnormality of abnormality type 2 which is the content of the display 297cb. Thus, the processing apparatus 11a displays the presence / absence and type of shear abnormality related to the measurement profile on the output unit 113a which is a display unit. Thereby, the processing apparatus 11a can clearly indicate to the user whether or not the shearing abnormality has been performed.
[effect]
The processing apparatus according to the present embodiment derives a derived profile that is a relationship between a distance value between a punch and a die and a force value when the workpiece is sheared. As described above, the derived profile significantly reflects the presence and type of abnormality during shearing. Accordingly, by determining whether the derived value derived from the derived profile satisfies a predetermined condition, it is possible to determine the presence / absence and type of an abnormality during shearing with higher accuracy.

  In the description so far, as an example of a processing apparatus, a processing apparatus that shears an object to be sheared with a punch and a die has been described. However, the processing apparatus of the present invention is not limited to the above processing apparatus. The processing apparatus of the present invention may be anything as long as it corresponds to the minimum configuration of the processing apparatus of the present invention described below. The processing apparatus of the present invention may be, for example, a press machine or a shear.

  FIG. 28 is a conceptual diagram showing the configuration of the detection device 12x, which is the minimum configuration of the detection device of the present invention.

  The detection device 12x includes a force value deriving unit 109x, a distance value deriving unit 106x, and a processing unit 111x.

  The force value deriving unit 109x derives a force value that is a value representing a force received by the processing member from the workpiece when the processing member (not shown) processes the workpiece (not shown).

  The distance value deriving unit 106x derives a distance value that is a value representing a distance between the workpiece and the processing member when performing the processing.

  The processing unit 111x outputs a signal representing the processing status based on a derived profile that is a relationship between the force value and the distance value related to the processing.

  The derived profile when performing the processing varies greatly depending on the difference in the processing status. Therefore, the detection device 12x can output information that represents the state of the processing performed by the processing member with higher accuracy by the derived profile.

  As described above, the detection device 12x has the effects described in the section [Effects of the Invention] with the above-described configuration.

  The present invention has been described above with reference to preferred embodiments. However, the present invention is not necessarily limited to the above embodiments, and various modifications can be made within the scope of the technical idea.

  Moreover, although a part or all of said embodiment can be described also as the following additional remarks, it is not restricted to the following.

(Appendix 1)
A force value deriving unit for deriving a force value that is a value representing a force received by the processing member from the workpiece when the processing member processes the workpiece;
A distance value deriving unit for deriving a distance value that is a value representing a distance between the workpiece and the processing member when performing the processing;
A processing unit that outputs a signal representing the state of the processing by a derived profile that is a relationship between the force value and the distance value related to the processing;
A detection device comprising:

(Appendix 2)
The detection device according to appendix 1, wherein the processing member is the processing member that processes the workpiece by moving in a state of being in contact with the workpiece.

(Appendix 3)
The detection apparatus according to appendix 1 or appendix 2, wherein the processing unit performs the output based on a derived value that is a value derived from the derived profile.

(Appendix 4)
The detection apparatus according to appendix 3, wherein the derived value is a value representing the similarity between the other derived profile recorded in advance and the derived profile related to the processing.

(Appendix 5)
The detection device according to appendix 3 or appendix 4, wherein the derived value is a maximum force value in the derived profile.

(Appendix 6)
The detection device according to any one of supplementary notes 3 to 5, wherein the derived value is a value representing a width of a distance value exceeding a predetermined force value in the derived profile.

(Appendix 7)
The detection device according to any one of supplementary notes 3 to 6, wherein the derived value is an integral value with respect to a distance value of force values in the derived profile.

(Appendix 8)
Any one of Supplementary Note 3 to Supplementary Note 7, wherein the derived value is an integral value with respect to a distance value of a difference in force value between another derived profile recorded in advance and the derived profile related to the processing The detection device described in 1.

(Appendix 9)
The detection apparatus according to any one of Supplementary Note 3 to Supplementary Note 8, wherein the derived value is a derived value obtained by combining two or more derived values.

(Appendix 10)
The detection apparatus according to appendix 3 or appendix 8, wherein the output is an output associated with the condition when the derived value satisfies a predetermined condition.

(Appendix 11)
The detection apparatus according to appendix 9, wherein the condition is a combination of a first condition and a second condition.

(Appendix 12)
The detection apparatus according to appendix 11, wherein the first condition is a condition for the first derived value, and the second condition is a condition for the second derived value.

(Appendix 13)
The detection device according to any one of supplementary notes 1 to 12, wherein the movement is a movement in a direction of the workpiece.

(Appendix 14)
The detection device according to any one of supplementary notes 1 to 13, wherein the signal includes information indicating whether or not the processing is defective.

(Appendix 15)
The detection device according to any one of supplementary notes 1 to 14, wherein the signal includes information indicating a type of the processing performed.

(Appendix 16)
The detection device according to appendix 15, wherein the type includes a type of defective processing performed.

(Appendix 17)
The detection device according to appendix 15 or appendix 16, wherein the type includes performing the machining on the workpieces stacked in plurality.

(Appendix 18)
The detection device according to any one of Supplementary Note 15 to Supplementary Note 17, wherein the type includes processing a workpiece on which foreign matter is placed.

(Appendix 19)
The detection device according to appendix 18, wherein the foreign matter is at least a part of an object processed by the detection device before the processing.

(Appendix 20)
The detection device according to any one of appendix 15 to appendix 19, wherein the type includes that the thickness of the sheared object deviates from a design value.

(Appendix 21)
The detection device according to any one of Supplementary Note 15 to Supplementary Note 20, wherein the type includes that the thickness of the sheared object is thinner than a design value.

(Appendix 22)
Of the appendix 1 to the appendix 21, wherein the machining member is assumed to be combined with a die and includes a punch for shearing the object to be sheared inserted between the die and the machining member The detection apparatus described in any one.

(Appendix 23)
The detection device according to any one of supplementary notes 1 to 22, wherein the processing member is the punch.

(Appendix 24)
24. The detection device according to appendix 22 or appendix 23, wherein the type includes an abnormality of rising.

(Appendix 25)
The detection device according to any one of Supplementary Note 1 to Supplementary Note 24, further comprising a display unit configured to display the derived profile and a display representing the processing status represented by the derived profile.

(Appendix A1)
A processing apparatus comprising the detection device according to any one of supplementary notes 1 to 21 and the processing member.

(Appendix B1)
When the processing member processes the workpiece, a force value representing a force received by the processing member from the workpiece is derived, and when the processing is performed, the workpiece and the workpiece Deriving a distance value that is a value representing the distance to the processing member, and outputting a signal representing the processing status according to the derived profile that is a relationship between the force value and the distance value related to the processing. Detection method.

(Appendix C1)
When the processing member processes the workpiece, a force value representing a force received by the processing member from the workpiece is derived, and when the processing is performed, the workpiece and the workpiece Deriving a distance value that is a value representing the distance to the processing member, and outputting a signal representing the processing status according to the derived profile that is a relationship between the force value and the distance value related to the processing. A detection program that causes a computer to execute processing.

11a Processing device 101a Punch 102a Die 105a Moving part 106a, 106x Distance value deriving part 107a Driving part 108a Processing deriving part 109a, 109x Force value deriving part 111a, 111x Processing part 112a, 112ab, 112ac, 112ad Sheared object 113a Output part 114a, 114b Member 115a, 115b Holding part 116a, 116b Elastic part 119a, 119ab, 119ac, 119ad Sheared object 171a End part 181a, 181b, 181c, 181d, 181da, 181e Surface 191a Arrow 201a, 201b, 201d, 201e, 201d 201g, 201h Distance value 206a, 206b, 206c, 206d Force value 211a, 211b, 211c, 211d Profile 291a Line 296a, 2 6b, 296c frame 297a, 297b, 297c display

Claims (10)

A force value deriving unit for deriving a force value that is a value representing a force received by the processing member from the workpiece when the processing member processes the workpiece;
A distance value deriving unit for deriving a distance value that is a value representing a distance between the workpiece and the processing member when performing the processing;
A processing unit that outputs a signal representing the state of the processing by a derived profile that is a relationship between the force value and the distance value related to the processing;
A detection device comprising:   The detection apparatus according to claim 1, wherein the processing member is the processing member that processes the workpiece by moving in a state of being in contact with the workpiece.   The detection apparatus according to claim 1, wherein the processing unit performs the output based on a derived value that is a value derived from the derived profile.   The detection device according to claim 3, wherein the derived value is a maximum value of force values in the derived profile.   The detection device according to claim 3 or 4, wherein the derived value is a value representing a width of a distance value exceeding a predetermined force value in the derived profile.   The detection device according to any one of claims 3 to 5, wherein the derived value is a derived value obtained by combining two or more derived values.   The detection device according to claim 3 or 6, wherein the output is an output associated with the condition when the derived value satisfies a predetermined condition.   The detection device according to claim 7, wherein the condition is a combination of a first condition and a second condition.   The detection device according to claim 1, wherein the signal includes the presence or absence of the processing defect or the type of the processing defect performed.   10. The detection device according to claim 1, further comprising a display unit configured to display the derivation profile and a display representing the processing state represented by the derivation profile.

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