JP2010017800A - Deburring method and deburring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deburring method for performing an automated system operation over a long period, improving manufacturing efficiency, and easily performing setting operations for correction values or the like. <P>SOLUTION: Since some correction values are set before deburring, when the number of processings reaches a predetermined times at a predetermined processing point, a control unit 10 automatically calculates a correction amount for movement to a next processing point so that the deburring is continued at a new processing point. Since the setting operations before deburring is simplified, the automated system operation is enabled over a long period, and the operation of a deburring device does not need to be stopped, the manufacturing efficiency is increased. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a deburring method and a deburring apparatus using a rotating grindstone in a machining center.

  Conventionally, when performing deburring with a rotating grindstone using a machining center, a plurality of spare rotating grindstones are prepared, and the tool life value of the rotating grindstone (for example, the number of times used or the time used) is set in advance. When the tool life of the rotating grindstone reaches a predetermined tool life value, a deburring method is adopted in which the rotating grindstone is replaced with a spare rotating grindstone. However, in this deburring method, only a part of the rotating grindstone is worn, and the rotating grindstone is newly replaced even though there is a usable part. There is.

  Therefore, when the tool life reaches a predetermined tool life value, the machining center is temporarily stopped, and the operator manually moves the correction value (for example, the processing point of the rotating grindstone is moved so that the usable portion is located at the processing point). (Correction amounts in the X, Y, and Z directions) are input, and the deburring process is continued again using the same rotating grindstone. Further, although not deburring, a machining method in a multi-tasking machine as disclosed in Patent Document 1, for example, has been devised. In this machining method, a plurality of machining postures for the same tool are set in advance, and when the tool life in a predetermined machining posture reaches a predetermined tool life value, the machining posture of the tool is changed to another machining posture. To continue processing.

JP 2002-11640 A

  However, with the method in which the operator manually inputs the correction value as described above, unmanned operation over a long time is impossible, and the correction value is input manually by stopping the machining center every time the tool life is exhausted. Has a problem that production efficiency is poor. In addition, the machining method disclosed in Patent Document 1 requires a mechanism for changing the posture of the tool, which results in a complicated and expensive machine, and a correction value is set for each machining posture before deburring. There is a problem that the correction value setting operation becomes more troublesome as the number of machining postures increases.

  Accordingly, the present invention has been made in view of the above problems, and an unmanned operation over a long period of time can be performed even in an existing three-axis control machining center, so that manufacturing efficiency can be improved and correction values and the like can be set. An object of the present invention is to provide a deburring method and a deburring device that do not bother the work.

  In order to achieve the above object, the invention described in claim 1 of the present invention is used when changing the shape correction amount, which is a correction amount related to the shape of the deburring tool, and the machining point in the deburring tool. A deburring method in a deburring apparatus for deburring a workpiece with the deburring tool, in which a unit correction amount and a tool life value at one machining point are set in advance. A first step of determining whether or not the tool life at the machining point being machined has reached the tool life value, and when it is determined in the first step that the tool life has reached the tool life value A second step of obtaining a movement correction amount of the deburring tool for changing a machining point based on the shape correction amount and the unit correction amount, and moving the deburring tool based on the movement correction amount, And executes the third step to continue the deburring at a processing point.

  In the invention according to claim 2, the reference point of the deburring tool is set in advance in the deburring device, and the movement correction amount to the first machining point is based on the reference point and the shape correction amount. It is characterized by seeking.

  According to a third aspect of the present invention, there is provided a shape correction amount that is a correction amount related to the shape of the deburring tool, a unit correction amount used when changing a machining point in the deburring tool, and a tool at one machining point. A deburring device for deburring the workpiece with the deburring tool, wherein the tool life at the current processing point during deburring is the tool life. For determining whether or not the tool life has reached the tool life value when the tool life has reached the tool life value. A movement correction amount of the deburring tool is obtained, the deburring tool is moved based on the movement correction amount, and a controller that continues the deburring process at a new machining point is provided. That.

According to the first and third aspects of the invention, when the number of machining operations at a predetermined machining point reaches the tool life value, the movement correction amount to the next machining point is automatically calculated based on the shape correction amount and the unit correction amount. To calculate. Further, the deburring process is continued by positioning the calculated machining point at the machining position. Therefore, when changing the machining point, it is possible to perform unmanned operation for a long time without requiring data input by an operator, and it is not necessary to stop the operation of the deburring device, so that the manufacturing efficiency can be improved. it can.
According to the second aspect of the present invention, if the reference point is input in advance in addition to the shape correction amount, the unit correction amount, and the tool life value, the movement correction amount up to the first machining point is automatically calculated. Since the calculation amount is compared with that in which correction amounts and the like related to all machining postures must be set in advance, the setting work before deburring can be simplified.

  Hereinafter, a deburring method according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view showing a machining center 1 that functions as a deburring device. FIG. 2 is an explanatory view showing the tip of the rotating grindstone 4 in an enlarged manner.
The machining center 1 has a headstock 2 installed so as to be movable in directions of three orthogonal axes (X, Y, and Z axes). The spindle stock 2 can be rotated around a C axis parallel to the Z axis. A main spindle 3 is provided. The spindle 3 can be attached with a rotating grindstone 4 that is integrally provided with a spherical grindstone portion 4b at the tip of a shaft portion 4a that is long in the Z-axis direction. By rotating, the work W fixed on the table 5 is deburred.

  Reference numeral 10 denotes a control unit for controlling the deburring process by the rotating grindstone 4, and stores a shape correction amount, a displacement amount every time, a reference point, and an initial correction amount, which will be described later, and a memory for storing the number of times of machining. And a calculation unit 12 for calculating a correction amount when changing the machining point based on the amount of displacement each time, and controls deburring by an automatic correction command and a count-up command. Furthermore, 13 is an input means for inputting a shape correction amount, an initial correction amount, and the like to the storage unit 11.

  The shape correction amount is a correction amount related to the shape of the rotating grindstone 4, and the shape correction amount in the present embodiment is a tool length L = 43.00 mm and a grindstone radius R = 10.00 mm. Further, the amount of shift every time is a unit correction amount when changing the machining point, and the amount of shift every time in the present embodiment is ΔZ = 0.5000 mm which is a unit correction amount in the longitudinal direction of the tool. Furthermore, in this embodiment, the tool life value at one machining point is set to every machining frequency: 10 times. In addition, the point a in FIG. 2 is set as a reference point, and an initial correction amount (Z1 = 1.000 mm in the present embodiment) from the reference point to the point b serving as the initial processing point is set in advance.

Here, a deburring method in the machining center 1 which is a main part of the present invention will be described with reference to FIGS. FIG. 3 is a flowchart of the deburring method, and FIG. 4 is an explanatory diagram showing the change of the processing point in the rotating grindstone 4.
First, before performing deburring, the shape correction amount, the amount of displacement each time, and the initial correction amount are set in the storage unit 11, and the point a that is the tip of the grindstone portion 4b is set as a reference point (S1). Next, when performing machining for the first time, the control unit 10 executes an initial machining correction command, and the shape correction amount and the movement correction amount X1 from the initial correction amount to the point b (in this embodiment, X1 = 4.359). ) Is calculated (S2). Subsequently, point b is positioned at the machining position (S3, shown in FIG. 4A), and deburring is performed at the initial machining point (S4).

  When one deburring process is completed, the control unit 10 executes a count-up command, adds “1” to the stored number of processes (“0” for the first time) (S5), and then the tool life It is determined whether or not the value has been reached (in this case, whether or not the number of machining operations is 10) (S6). Since this determination is the first processing, it is naturally NO, and the control unit 10 repeats S4 to S6 until the number of deburring processes at the point b is 10 (that is, the determination in S6 is YES).

  When the number of machining operations at the point b reaches 10 times, the control unit 10 executes an automatic correction command, up to the point c that becomes the next machining point based on the shape correction amount, the displacement amount every time, and the initial correction amount. Movement correction amounts X2 and Z2 (in this embodiment, X2 = 5.268, Z2 = 1.500) are calculated (S7). Thereafter, based on the correction amounts X2 and Z2, the point c is positioned at the machining position (S8, shown in FIG. 4B), and deburring is performed at the point c (S4). When performing the deburring process at the point c, as in the case of the point b, a count-up command is executed every time the process is completed, and “1” is added to the number of processes (S5). Steps S4 to S6 are repeated 10 times, such as determining whether or not c has reached the tool life value (this time, whether or not the number of machining times is 20) (S6).

Then, when the number of times of machining at point c reaches 10 (the number of times of machining from the first time reaches 20 times), the control unit 10 again determines the following based on the shape correction amount, the amount of displacement each time, and the initial correction amount. The movement correction amounts X3 and Z3 (in this embodiment, X3 = 6.0000 and Z3 = 2.000 are obtained) up to the point d as the processing point are calculated (S7). Thereafter, the point d is positioned at the machining position (S8). In this way, every time deburring is performed 10 times, the machining points are calculated and changed in the order of c → d → e → ·· g, and when the deburring process at point g reaches 10 times, it is mounted on the spindle. The rotating grindstone 4 is replaced with the next rotating grindstone.
As described above, the deburring method in the machining center 1 is controlled.

According to the deburring method in the machining center 1 as described above, when the tool life at a predetermined machining point reaches the tool life value, the control unit 10 performs the following based on the shape correction amount, the amount of displacement every time, and the initial correction amount. The movement correction amount to the machining point is automatically calculated. Then, the calculated machining point is positioned at the machining position, and the deburring process is continued. Therefore, when the machining point is changed, it is not necessary to input data by an operator, and it is possible to perform unmanned operation for a long time, and it is not necessary to stop the operation of the machining center 1, so that the manufacturing efficiency can be improved. .
In addition, if only the shape correction amount, the amount of displacement every time, the reference point, and the initial correction amount are input in advance, the correction amount up to the new processing point is automatically calculated. Compared with what must be set, it is possible to simplify the setting work before deburring.

In this embodiment, a spherical grindstone is used as a processing tool used for deburring, but a downward conical grindstone may be used.
In this embodiment, the unit correction amount set by the automatic correction command is set in the tool longitudinal direction. However, the unit correction amount is not limited to this, and can be set in the tool radial direction, the tool angle, or the like.
Furthermore, in this embodiment, the initial correction amount is set and the initial processing point is calculated using the initial correction amount at the time of initial processing. However, the reference point and the shape correction amount are not used without using the initial correction amount. You may make it calculate from these.
In addition, the tool life value in the present embodiment is set based on the number of times of use, but is not limited to this, and can be set based on the time of use.

It is a block diagram which shows an example of the deburring apparatus to which this invention is applied. It is an example of the tool used for a deburring process. It is a flowchart performed by the deburring tool automatic correction function. It is the figure which showed the change of the processing point using the tool of FIG. 1, (a) shows the case where it changed to the first processing point b, (b) shows the case where it changed from the point b to the point c. Show.

Explanation of symbols

   1 ··· Machining center (deburring device) 2 ··· Spindle base 3 ··· Spindle 4 ··· Rotary wheel 4a · · Shaft portion 4b · · Wheel portion 10 · · Control portion 11 · · · Storage portion , 12 ..Calculation unit.

Claims (3)

The shape correction amount, which is the correction amount related to the shape of the deburring tool, the unit correction amount used when changing the machining point in the deburring tool, and the tool life value at one machining point are preset. , A deburring method in a deburring apparatus for deburring a workpiece with the deburring tool,
A first step of determining whether or not the tool life at the machining point currently being deburred has reached the tool life value;
When it is determined in the first step that the tool life has reached the tool life value, a movement correction amount of the deburring tool for changing a machining point is determined based on the shape correction amount and the unit correction amount. A second step to be obtained;
A deburring method comprising: performing a third step of moving the deburring tool based on the movement correction amount and continuing the deburring process at a new machining point. The reference point of the deburring tool is set in advance in the deburring device,
The deburring method according to claim 1, wherein the movement correction amount to the first machining point is obtained based on the reference point and the shape correction amount. A storage unit that stores a shape correction amount that is a correction amount related to the shape of the deburring tool, a unit correction amount used when changing a machining point in the deburring tool, and a tool life value at one machining point. A deburring device for deburring a workpiece by the deburring tool,
When it is determined whether the tool life at the machining point currently being deburred has reached the tool life value, and when it is determined that the tool life has reached the tool life value, the shape Based on the correction amount and the unit correction amount, the movement correction amount of the deburring tool for changing the machining point is obtained, the deburring tool is moved based on the movement correction amount, and deburring is performed at a new machining point. A deburring device comprising a control unit that continues the operation.

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