CN201034559Y - Flatness and parallelism detection device for the upper and lower planes of plate-shaped workpieces - Google Patents

Abstract

The utility model relates to a detection device for simultaneously detecting the flatness and parallelism of the upper and lower planes of a plate-shaped workpiece. The device includes a base, a lateral movement mechanism is arranged on one side of the base, and a laser sensor vertical movement mechanism is arranged on the lateral movement mechanism. , a grating ruler is installed on the described transverse movement mechanism, and meanwhile, the movable part of the grating ruler is fixedly connected with the vertical movement mechanism of the laser sensor; a longitudinal slide table is installed on the other side of the base, and a workpiece detection platform is installed on the slide table. During work, The two laser sensors installed up and down move laterally above and below the workpiece detection platform. The device is simple in structure, easy to operate, fast in measurement speed and high in measurement accuracy. It is suitable for industries such as radiation protection boards that need to accurately detect the flatness and parallelism of the upper and lower planes of products.

Description

Flatness and parallelism detection device for the upper and lower planes of plate-shaped workpieces

technical field

The utility model relates to a non-contact detection device for synchronously measuring the flatness and parallelism of the upper and lower planes of a plate-shaped workpiece, in particular to a special device for thin plate-shaped workpieces with high requirements on the flatness and parallelism of the upper and lower planes. detection device.

Background technique

At present, the known technology of measuring the flatness and parallelism of the workpiece is carried out under the three-dimensional coordinate measuring machine. This is not a special equipment for measuring flatness and parallelism. It is characterized by contact measurement, that is, three-dimensional coordinate measurement The probe of the machine touches the workpiece to achieve measurement, and during the measurement process, the position data of the points on the two planes to be measured cannot be collected at the same time, that is, the workpiece must be turned over to measure the other side after measuring the data of the points on one side, and then according to These points re-fit the two planes in the computer, and further evaluate the parallelism of the two planes. This measurement method is expensive and not efficient. For the measurement of some workpieces that only strictly require the parallelism of the upper and lower planes, this measurement method It is not very practical. Develop a non-contact special detection device for measuring the flatness and parallelism of flat workpieces, that is, the measurement part can be completed without touching the workpiece, and the data of the two surfaces of the workpiece to be measured can be collected at the same time to measure flat workpieces The special detection device for flatness and parallelism can reduce the measurement cost of some production enterprises that require a single product measurement mode and improve measurement efficiency.

Utility model content

The purpose of the utility model is to provide a flatness and parallelism measuring device for the upper and lower planes of a plate-shaped workpiece to improve the measurement efficiency and reduce the production cost.

In order to achieve the above object, the utility model adopts the following technical solutions:

A flatness and parallelism detection device for the upper and lower planes of a plate-shaped workpiece, including a base, a workpiece platform and a laser sensor, characterized in that a lateral movement mechanism is installed on the upper side of the base through a fixed vertical side plate, and the A laser sensor vertical movement mechanism is fixedly installed on the horizontal movement mechanism of the laser sensor, and two described laser sensors are respectively fixedly installed on the vertical movement frame at the upper and lower ends of the laser sensor vertical movement mechanism; a horizontal movement mechanism is installed on the other side of the base A slide table with longitudinal adjustment, a workpiece detection platform is fixedly installed on the slide table, and there is a long transverse groove in the center of the workpiece detection platform where the workpiece is placed; when working, the two laser sensors are respectively in the The top and bottom of the workpiece platform are aligned with the long transverse groove.

The structure of the above-mentioned lateral movement mechanism is as follows: a fixed base plate is fixedly connected with the vertical side plate, a horizontal guide rail is respectively fixed on the upper and lower sides of the vertical surface of the fixed base plate, and the two lateral guide rails are respectively connected with two traverse sliders. Sliding matching, two traversing sliders are fixedly connected to a cover plate fixedly connected to the vertical movement mechanism of the laser sensor, one end of the fixed base plate is fixedly connected to an end plate, and a motor is fixedly installed on the end plate; The driving screw is supported by bearings, one end of which is connected to the output end of the motor, and the other end is screwed with a nut, and the nut is fixedly mounted on the inner vertical surface of the fixed base plate.

A grating ruler is installed on the upper side of the fixed substrate of the above-mentioned lateral movement mechanism, and the movable parts of the grating ruler are fixedly connected through a connecting plate, and the vertical connecting plate of the horizontal moving mechanism is connected to the connecting plate on the vertical moving mechanism of the laser sensor Fixed connection.

One side of the above-mentioned base is equipped with two proximity switch brackets, each proximity switch bracket is respectively equipped with a proximity switch, and a proximity switch block corresponding to it is installed on the side of the slide table.

The structure of the vertical mechanism of the above-mentioned laser sensor is: a vertical base plate is fixedly connected with the cover plate through the vertical connecting plate, and the front and rear sides of the vertical surface of the vertical base plate are fixed with two vertical guide rods through stoppers, with upper and lower Each of the two vertical sliders is fixedly connected to the upper and lower small cover plates, and the upper and lower two small cover plates are respectively fixedly connected to a vertical moving frame for installing the laser sensor; there is a vertical driving screw supported by a bearing, so that one end is connected to a mounting The output shaft of the motor on the end plate is fixed on one end of the vertical base plate, and the other end is screwed with two driving nuts, and the two driving nuts are respectively fixed and installed on the inner vertical surfaces of the upper and lower two small cover plates; A proximity switch is installed on one side of the vertical base plate through two proximity switch brackets, and a proximity sensor block is correspondingly installed on the side of the upper small cover plate.

The above-mentioned slide table mechanism is: two horizontal longitudinal guide rails are fixedly installed on the base, four guide rail sliders are slidingly matched with the two horizontal longitudinal guide rails respectively, and the four guide rail sliders are fixedly connected to a bracket, on which the bracket The working platform described above is fixedly installed, and a limit stopper and a proximity sensing block are installed on one side of the support.

There is an electrical installation box under the above-mentioned base, and the driver of two motors, the power supply unit of two laser sensors and the grating ruler, the data processing line input to the computer, the communication line input to the computer of the contact switch, etc. are installed in the electrical installation box. These data lines are connected to a control computer; a data acquisition card is configured inside the control computer, and the signals and data of the electrical components other than the grating scale are connected to the data acquisition card through the above communication lines, and communicated with the computer, received Computer control; the grating scale exchanges data with the computer through the corresponding interface of the computer.

Compared with the prior art, the utility model has the following obvious features and advantages: because the utility model adopts two laser sensors to carry out non-contact data acquisition on the upper and lower planes of the workpiece at the same time, and can use computer automatic control, thereby improving the efficiency, Reduced measurement costs. The utility model has the advantages of simple structure, convenient operation, fast detection speed and high detection precision (the precision depends on the precision of the sensor), and is suitable for special requirements on flatness and parallelism of the upper and lower planes of plate-shaped workpieces, such as ray shields. production industry.

Description of drawings

Fig. 1 is a structural schematic perspective view of an embodiment of the present utility model;

Fig. 2 is a schematic perspective view of the structure of the lateral movement mechanism in the example of Fig. 1;

Fig. 3 is a schematic perspective view of the structure of the vertical movement mechanism of the laser sensor in the example of Fig. 1;

Figure 4 is a schematic perspective view of the structure of the slide table in the example of Figure 1

Detailed ways

A preferred embodiment of the present utility model is described as follows in conjunction with accompanying drawing:

Fig. 1 is a structural perspective view of the flatness and parallelism detection device of the upper and lower planes of the plate-shaped workpiece, which includes: a base 1, on which a vertical side plate 2 is arranged, and the vertical side plate 2 is located on the side directly above the base 1 A lateral movement mechanism 3 is installed, and the lateral movement mechanism 3 is connected with the vertical movement mechanism 7 of the laser sensor through the vertical connecting plate 20, and drives the vertical movement mechanism 7 of the laser sensor to reciprocate laterally. At the same time, a The grating ruler 4, the movable part 6 of the grating ruler 4 is connected with the vertical connecting plate 20 through the connecting plate 5, so that the grating ruler 4 can collect the displacement value of the lateral movement of the vertical movement mechanism 7 of the laser sensor; the vertical movement of the laser sensor The mechanism 7 is used to drive the two laser sensors 9 and 10 mounted on it to move up and down, and collect the vertical position data of the points on the upper and lower planes of the workpiece 11 through the two laser sensors 9 and 10; A slide table 14 is installed on the other side where the vertical side plate 2 is installed, and the slide table 14 is used to place the flat workpiece 11 and move in a direction perpendicular to the measurement direction of the laser sensors 9, 10 and the measurement direction of the grating ruler, so that the laser sensor The measuring point on the workpiece moves in this direction so as to collect the position data of the points of multiple positions on the plane; two proximity switch brackets 17,18 are installed on one side of the base 1, and two proximity switch brackets 17,18 are installed on the proximity switch brackets 17,18 respectively Proximity switch 16,19 is installed, and proximity switch 16,19 is used for detecting the position that slide table 14 moves on base 1; The driver and data communication device of each motor can be installed in the box under base 1, these drivers and data communication device Connected with and controlled by a computer, the computer processes data from various sensors on the detection device.

Fig. 2 is the perspective view of the structure of the lateral movement mechanism 3 in the example of Fig. 1. , 23, two transverse guide rails 29,25, and a fixed base plate 30 are formed. One end of the fixed base plate 30 is installed with an end plate 27 perpendicular to its front surface, and a motor 26 is installed on the outside of the end plate 27. The main shaft of the motor 26 is connected to one end of the horizontal drive screw 24, and the other end of the horizontal drive screw 24 is supported by a bearing 28. A nut 21 is installed on the driving screw rod 24, and a cover plate 22 is installed above the nut 21; Move slide block 31 and 23, traversing slide block 31 and 23 are all fixedly connected with cover plate 22; This cover plate 22 is through the middle piece vertical connecting plate 20 among Fig. 1 and laser sensor vertical movement mechanism 7 among Fig. 1 connected.

Fig. 3 is the perspective view of the structure of the vertical movement mechanism 7 of the laser sensor in the example of Fig. 1, the vertical movement mechanism 7 of the laser sensor mainly consists of two vertical guide rods 35, 37, a vertical drive screw 36, vertical sliders 33, 51, 38, 41, Drive nuts 43, 53, bearings 54, stoppers 40, 32, 52, small cover plates 34, 39, vertical moving frames 8, 15, laser sensors 9, 10, proximity switches 45, 48, proximity switch brackets 46, 49, It consists of proximity sensing block 50 , motor 56 , end plate 31 , mounting plate 20 and vertical base plate 42 . Two pairs of identical vertical slide blocks 33,51,38,41 are installed on one side of the vertical base plate 42; 41 can slide back and forth along the guide rods 35, 37; on the vertical base plate 42 between two pairs of vertical guide rods 35, 37, install the bearing 54 whose axis is parallel to the axis of the two vertical guide rods; install the vertical drive screw in the bearing 54 36; two drive nuts 43, 53 are installed on the vertical drive screw rod 36; a small cover plate 39, 34 is respectively installed on the two drive nuts 43, 53; the small cover plate 39, 34 is fixedly connected to two groups of vertical sliders respectively 33, 51, 38, 41, and can move back and forth along the axis direction of the vertical guide bar with these two groups of vertical sliders 33, 51, 38, 41 respectively; two laser sensors 9, 9, 10 vertical moving frames 8, 15; two laser sensors 9, 10 are respectively installed on the vertical moving frames 8, 15, and the laser sensors 9, 10 are respectively located in the inner side of the vertical moving frames 8, 15, and the installation position should ensure that the direction of laser irradiation is opposite Be positioned at the outside of vertical slide block 33,51,38,41 on the vertical base plate 42, respectively install a stopper 40,32,52, stopper 40,32,52 are fixedly connected with vertical guide rod 35,37 respectively, thereby The vertical guide rods 35, 37 are fixed on the vertical base plate 42; an end plate 31 is installed on an end surface of the vertical base plate 42, and a motor 56 is installed on the outside of the end plate 31, and the main shaft of the motor 56 is fixedly connected with the vertical drive screw 36; Two proximity switch supports 46,49 are installed on the side of the vertical base plate 42, and proximity switches 45,48 are respectively installed on the two proximity switch supports 46,49; The whole laser sensor vertical movement mechanism 7 is installed and fixed on the described lateral movement mechanism 3; the proximity sensing block 50 is installed on the outside of the slider 51.

Fig. 4 is the perspective view of the structure of slide table 14 in the example of Fig. 1, and this slide table 14 is mainly made up of guide rail slider 57, 58, 62, 64, horizontal longitudinal guide rail 59, 61, limit block 63, proximity sensor block 65, support 60 and workpiece platform 13 forms. Two pairs of guide rail sliders 57, 58, 62, 64 parallel to the axes of the mounting holes are respectively installed on the bottom surface of the support 60; each pair of guide rail sliders is respectively installed on a horizontal longitudinal guide rail 59, 61 and can slide along the guide rail, A limit stop 63 is also fixed on the horizontal longitudinal guide rail 61; a workpiece detection platform 13 is installed above the support 60, and a horizontal long-through groove 12 is opened on the workpiece detection platform 13, and the workpiece 11 is placed on the workpiece detection platform 13 and horizontally long through the groove 12, a limit block 63 is installed on the side of the lower end of the support 60.

When the flatness and parallelism detection device of the upper and lower planes of the plate-shaped workpiece in this embodiment is working, the operator places the flat workpiece 11 directly above the transverse long-through groove 12 of the workpiece detection platform 13, and pushes the slide table 14 towards the laser beam. Right below the detection device, the proximity sensing block 65 is facing the proximity switch 16. Due to the installation and adjustment in advance, the lasers of the two laser sensors 9 and 10 can just hit the flat workpiece 11 on the working platform 13 where the groove 12 is located. At the same time, the computer collects the state of the proximity switch, judges that the position of the slide table 14 is ready, starts the computer test program, the motor 56 drives the vertical drive screw 36 to rotate, and the vertical drive screw 36 drives the drive nuts 43, 53 to the direction of the workpiece 11 together Movement, the drive nuts 43,53 drive the small cover plates 34,39 fixedly installed thereon, and then drive the proximity switch brackets 49,46 fixedly installed on the small cover plates 34,39 to move to the laser sensor 9,10. Within the range of the sensor, since the laser sensors 9 and 10 can detect the distance from the workpiece 11 to the laser beam direction without contacting the workpiece 11, non-contact measurement can be realized. At this time, the proximity switch 45 senses the proximity sensor Block 50, and transmit computer signal by communication device, computer judges that laser sensor begins to measure the position and is ready, and computer collects the vertical position data (recorded as Z direction data) of a point on the upper and lower surfaces of workpiece 11 by laser sensor 9,10, simultaneously Record the reading of the grating ruler 4 at this time (recorded as the X direction data), then, the control motor 26 drives the screw rod 24 to rotate, the screw rod 24 drives the nut 21, the nut drives the cover plate 22 to move, and the cover plate 22 drags the screw rod installed thereon. The entire laser sensor vertical moving mechanism 7 moves a small fixed distance, which is set by the program. At the same time, the computer collects the readings of the grating ruler 4 to obtain the actual moving distance. When the distance reaches the set value, the control Motor 26 stops, and starts to collect the vertical position data of the second point on the upper and lower surfaces of the flat workpiece 11 by laser sensors 9,10, and the cycle goes on, and the computer obtains a group of such data (this group of points is except the above under the three-dimensional coordinate system) The Y direction data other than the X and Z directions are all marked as zero), at this time, the laser sensor vertical movement mechanism 7 moves to one end of the lateral movement mechanism 3, and then, the operator pushes the slide table 14 forward to make the approaching The sensing block 29 faces the proximity switch 19, the computer judges that the slide table 14 enters the second measurement position, starts the computer program and enters the next working step, the computer controls the motor 26 to move in the opposite direction, and collects the Z-direction data of the second row of points, The method is the same as when collecting the first set of points. In the three-dimensional coordinate system, the data in the Y direction is recorded as the difference between the two positions; the two rows of X direction data are set by the program and realized by controlling the movement of the motor. According to the data in the X, Y, and Z directions of each point, the upper and lower planes of the flat workpiece can be fitted in the computer, and the flatness and parallelism of the upper and lower planes can be evaluated further.

Claims (7)

1. the flatness and the depth of parallelism pick-up unit of lower plane on the plate workpiece, comprise base [1], workpiece sensing platform [13] and laser sensor [9,10], it is characterized in that a side is installed a transverse moving mechanism [3] by a fixing perpendicular side plate [2] above the described base [1], described transverse moving mechanism [3] is gone up a fixed installation laser sensor vertical movement mechanism [7], and the vertical moving frame of the upper and lower side of described laser sensor vertical movement mechanism [7] fixedly mounts two described laser sensors [9,101 respectively on [8,15]; Described base [1] but go up opposite side the vertically slide unit [14] of positioning of a level be installed, described slide unit [14] is gone up a fixed installation workpiece sensing platform [13], the centre that described workpiece sensing platform [13] is gone up place work piece [11] has a laterally long groove [12] of wearing; During work, described two laser sensors [9,10] are in the upper and lower of described workpiece [1] respectively and aim at described horizontal length and wear groove [12].

2. according to claims 1 described plate workpiece up and down flatness and the depth of parallelism pick-up unit on two planes, it is characterized in that, the structure of described transverse moving mechanism [3] is: a fixing base [30] is fixedlyed connected with described perpendicular side plate [2], the vertical plane of described fixing base [30] up and down both sides each fix a cross slide way [25,29], two cross slide waies [25,29] respectively with two traversing slide blocks [23,31] slip coupling, two traversing slide blocks [23,3 1] it is fixedly connected to fixedly connected the cover plate [22] of laser sensor vertical movement mechanism [7] with one, the fixedly connected end plate of one end of described fixing base [30] [27] fixedly mounts servomotor [26] on this end plate; A horizontal drive screw is supported by bearing [28], makes the one end connect the output terminal of described motor [26], and the other end and nut [21] revolve joins, and described nut [21] is fixedly installed on the inboard vertical plane of described fixing base [30].

3. the flatness of lower plane and depth of parallelism pick-up unit on the plate workpiece according to claim 2, a grating chi of top installation [4] that it is characterized in that the fixing base [30] of described transverse moving mechanism [3], the movable part [6] of described grating chi [4] is fixedly connected by web joint [5], described web joint [5] be positioned at laser sensor vertical movement mechanism [7] on to be connected the vertical web joint [20] of transverse moving mechanism [3] fixedly connected.

4. the flatness of lower plane and depth of parallelism pick-up unit on the plate workpiece according to claim 1, it is characterized in that, one side of described base [1] is equipped with two near switch bracket [17,18], each is near respectively installing one near switch [16,19] on the switch bracket [17,18], and be equipped with on the side of described slide unit [14] one corresponding to it switch block [65].

5. according to the flatness and the depth of parallelism pick-up unit of lower plane on claims 1 described plate workpiece, the structure that it is characterized in that described laser sensor vertical mechanism [7] is: a vertical substrate [42] is fixedlyed connected with cover plate [22] by described vertical web joint [20], vertically pass through block [32 on the both sides, front and back of the vertical plane of substrate [42], 40,52] two vertical guide stem [37 of support fixation, 35], each two vertical slipper [33 up and down, 51,38,41] respectively with each minor flaps [34 up and down, 39] fixedly connected, two minor flaps [34 up and down, 39] the fixedly connected installation laser sensor [9 of difference, 10] vertical moving frame [8,15]; A vertical drive screw rod [36] is supported by bearing [54], make the one end be connected and installed in the output shaft of the motor [56] on the fixed charge method end plate [31] of vertical substrate [42] one ends, and the other end and two drive nuts [53,43] revolve and join, and described two drive nuts [53,43] are fixedly mounted on respectively up and down on the inboard vertical plane of two minor flaps [34,39]; One side of described vertical substrate [42] is respectively installed one respectively near switch [48,45] by two near switch bracket [49,46], correspondingly installs one near sensor block [50] on the side of minor flaps [34] on described.

6. according to the flatness and the depth of parallelism pick-up unit of lower plane on claims 1 described plate workpiece, the structure that it is characterized in that described slide unit mechanism [14] is: two horizontal longitudinal rails [59,61] be fixedly mounted on the described base [1], four guide rail slide blocks [57,58,62,64] respectively with described two horizontal longitudinal rails [59,61] slip coupling, four guide rail slide blocks [57,58,62,64] a fixedly connected support [60], fixed installation described workpiece sensing platform [13] above the support [60], a side of support [60] are equipped with limited block [63] and near sensor block [65].

7. according to the flatness and the depth of parallelism pick-up unit of lower plane on claims 1 described plate workpiece, it is characterized in that under the described base [1] electric mounting box being arranged, the driver of two motors [26,56] is housed in the electric mounting box, the data processing circuit of the power supply unit of two laser sensors [9,10] and grating chi [4] and input computing machine, the tie line of the input computing machine of contact-making switch [16,19,48,45] etc., and these data circuits are linked to each other with a control computer; The internal configurations one blocks of data capture card of control computer; The signal of described electrical equipment except that grating chi [4] all links to each other with this data collecting card by described data circuit with data, and with compunication, accept computer control; Described grating chi [4] carries out exchanges data by the corresponding interface and the computing machine of computing machine.

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