Three-axis motion high-precision control equipment based on machine vision

Abstract

The utility model relates to the technical field of positioning devices, in particular to three-axis motion high-precision control equipment based on machine vision. Comprising a supporting platform, an X-axis moving device arranged on the supporting platform, a Y-axis moving device arranged on the X-axis moving device, a Z-axis moving device arranged on the Y-axis moving device, a clamping structure arranged on the supporting platform and a control system arranged on one side of the supporting platform and used for controlling the X-axis moving device, the Y-axis moving device and the Z-axis moving device. A workpiece is placed between the clamping structures, then the workpiece is fixed through the clamping structures, a programmed program is input into the control system, the machining structure on the Z-axis moving device can machine the workpiece on the clamp, and when the back face of the workpiece needs to be machined after the front face of the workpiece is machined, the Z-axis moving device can move to the Z-axis moving device. And the clamping structure is rotated to enable the workpiece clamped by the clamping plate to rotate and turn over, so that the purpose that a worker can turn over the workpiece without disassembling the workpiece is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of positioning devices, in particular to a three-axis motion high-precision control device based on machine vision. BACKGROUND

[0002] The three-axis motion high-precision control device based on machine vision, namely the three-axis linkage platform, is a system commonly used in automatic equipment, robots and mechanical arms, and its main purpose is to realize the accurate movement of objects in three directions. Its working principle relies on the coordinated action of motor drive, transmission mechanism and control system. The three-axis linkage platform is usually composed of three main axes, namely X-axis, Y-axis and Z-axis, and through the combination of these axes, the platform can move freely in three-dimensional space. Each axis is equipped with a servo motor or a stepper motor to realize high-precision and high-response motion control. These motors convert rotary motion into linear motion through transmission mechanisms such as gears, screws or chains. In terms of control, the three-axis linkage platform is usually equipped with a control system including a motion controller and sensors such as encoders, limit switches, etc., which accurately adjust the speed and position of the motor through calculation and control algorithms to achieve the predetermined motion trajectory. Its main structure includes a support platform, an X-axis moving device arranged on the support, a Y-axis moving device arranged on the X-axis moving device, a Z-axis moving device arranged on the Y-axis moving device, a clamp arranged on the support platform, and a control system arranged on one side of the support platform for controlling the X-axis moving device, the Y-axis moving device and the Z-axis moving device. The clamp includes two clamping plates slidably connected to the support platform and a fixing screw threadedly connected to the clamping plates. The use method is as follows: the workpiece is placed between the two clamping plates, then the clamping plates are slid to clamp the workpiece, and then the fixing screw is screwed in to fix the workpiece on the support platform. Then, the programmed program is input into the control system, and the machining structure on the Z-axis moving device will process the workpiece on the clamp.

[0003] In the prior art, some workpieces need to be processed on both sides. However, in the prior art, after the front surface of the workpiece is processed, the workpiece is disassembled from the clamp, then the workpiece is turned over with the back surface facing up, and then the workpiece is reinstalled on the clamp for processing. This results in a deviation in the position of the reinstalled workpiece, which requires the worker to reposition, which is very inconvenient. Therefore, the application provides a three-axis motion high-precision control device based on machine vision, which can turn over the workpiece without disassembling it, making it more convenient for the worker to process. CONTENT OF THE UTILITY MODEL

[0004] Aiming at the deficiencies of the prior art, the purpose of the present application is to provide a three-axis motion high-precision control device based on machine vision, which can make the workpiece complete turning over without disassembling the workpiece by the worker, and make the worker more convenient to process.

[0005] The above purpose of the present application is realized by the following technical scheme: a three-axis motion high-precision control device based on machine vision, comprising a support platform, an X-axis moving device arranged on the support, a Y-axis moving device arranged on the X-axis moving device, a Z-axis moving device arranged on the Y-axis moving device, a clamping structure arranged on the support platform, and a control system arranged on one side of the support platform for controlling the X-axis moving device, the Y-axis moving device and the Z-axis moving device, the clamping structure comprising two fixed plates arranged opposite on the support platform, two rotating cylinders arranged on the side of the two fixed plates away from each other and extending into the space between the two fixed plates, threaded holes opened in the end face of the rotating cylinder and penetrating the rotating cylinder, a fixed screw threadedly connected to the rotating cylinder through the threaded hole and extending into the space between the two fixed plates, and a clamping plate arranged on the end of the fixed screw extending into the space between the two fixed plates, the rotating cylinder being rotationally connected to the fixed plate.

[0006] By adopting the above technical scheme, the workpiece is placed between the two clamping plates, and then the rotating cylinder is held and the fixed screw is twisted, so that the two clamping plates are close to each other and clamp the workpiece, then the programmed program is input into the control system, and the processing structure on the Z-axis moving device processes the workpiece on the clamp, when the front surface of the workpiece needs to be processed, the rotating cylinder is held and rotated, so that the rotating cylinder rotates with the fixed screw, thereby rotating the workpiece clamped by the clamping plate to turn over, so that the worker can process the front and back surfaces of the workpiece without disassembling the workpiece, and the worker does not need to reposition, thereby achieving the purpose of making the worker complete turning over of the workpiece without disassembling the workpiece, and making the worker more convenient to process.

[0007] Further, the end of the rotating cylinder away from the fixed plate is provided with a fixing device for fixing the rotating cylinder.

[0008] Further, the fixing device comprises two positioning plates arranged on both sides of the rotating cylinder and perpendicular to the rotating cylinder, a positioning screw hole opened in the positioning plate and penetrating the positioning plate, a fixing screw hole opened in the support platform corresponding to the positioning screw hole, and a positioning screw threadedly connected to the support platform through the positioning screw hole and the fixing screw hole and penetrating the positioning plate.

[0009] By adopting the above technical scheme, although the clamping structure is provided to make the work more convenient for the workers, the machining structure on the Z-axis moving device can exert pressure on the workpiece during the machining process, which can cause the rotating cylinder to rotate and cause failure during the machining process. The setting of the fixing device solves this technical problem. Through the setting of the fixing device, the worker can twist the two positioning screws when machining the workpiece, respectively penetrating the two positioning plates and being threadedly connected to the support platform, so as to fix the rotating cylinder. Thus, the rotating cylinder will not rotate during the machining process, thereby preventing the occurrence of failure during the machining process. Moreover, because of the setting of the fixing device, the surface of the workpiece after rotation is flat. Because the positioning plates are arranged on both sides of the rotating cylinder and are perpendicular to the rotating cylinder, the positioning screw can only be threadedly connected to the support platform through the positioning plate after the rotating cylinder rotates 180 degrees. Thus, the surface of the workpiece after rotation can be flat, thereby improving the stability of the clamping structure. When it is necessary to turn over the workpiece, the positioning screw can be twisted in the reverse direction to make the positioning screw disengage from the support platform, so as to make the rotating cylinder rotate and turn over the workpiece.

[0010] Further, the fixing screw is provided with a fixing structure for fixing the screw at one end away from the clamping plate.

[0011] Further, the fixing structure comprises a limiting plate fixedly arranged on the circumferential surface of the fixing screw at one end of the clamping plate, a limiting disc arranged on the circumferential surface of the rotating cylinder away from the clamping plate, a limiting hole formed in the limiting plate and penetrating the limiting plate, a plurality of limiting holes formed in the limiting disc and penetrating the limiting disc in a circular array with the center of the limiting disc as the base point, and a limiting rod penetrating the limiting plate and the limiting disc through the limiting hole and the limiting hole.

[0012] By adopting the above technical scheme, although the setting of the fixing device prevents the rotating cylinder from rotating during the machining process, the fixing screw is threadedly connected to the rotating cylinder. After the rotating cylinder is limited, the fixing screw can rotate after the workpiece is subjected to pressure, which can cause failure during the machining process. The setting of the fixing structure solves this technical problem. Through the setting of the fixing structure, the worker can push the limiting rod to penetrate the limiting plate and the limiting disc when machining the workpiece, so as to fix the fixing screw. When it is necessary to clamp or disassemble the workpiece, the limiting rod can be pulled out to rotate the fixing screw to clamp or disassemble the workpiece.

[0013] Further, a through hole penetrating the support platform is formed in the support platform, and the through hole is located between the two fixing plates.

[0014] By adopting the above technical scheme, when the clamping plate clamps a long workpiece to turn it over, the workpiece can be turned over through the through hole, thereby improving the applicability of the clamping structure.

[0015] Further, one side of the support platform is provided with a filling structure for filling the through hole.

[0016] Further, the filling structure comprises a plug-in hole provided on one side of the support platform and communicating with the through hole, and a filling plate plugged into the support platform through the plug-in hole and used for filling the through hole.

[0017] By adopting the above technical scheme, although the through hole improves the applicability of the clamping structure, when the workpiece is processed, the worker places a gasket on the bottom surface of the workpiece to prevent the workpiece from sliding on the clamping plate under pressure. The setting of the through hole causes the gasket to have no place to be placed, and the setting of the filling structure solves this technical problem. When the workpiece needs to be turned over, the filling plate is pulled out of the support platform, so that the through hole is exposed to facilitate the turning over of the workpiece. After the turning over is completed, the filling plate is pushed into the support platform, so that the through hole is filled by the filling plate to facilitate the worker to place the gasket.

[0018] In summary, the present application has at least one of the following beneficial technical effects:

[0019] 1. By setting the clamping structure, the workpiece is placed between the two clamping plates, and then the fixed screw is twisted by holding the rotating cylinder, so that the two clamping plates are close to each other to clamp the workpiece. Then input the programmed program in the control system, and the machining structure on the Z-axis moving device will process the workpiece on the clamp. When the workpiece needs to be processed on the reverse side after the front surface is processed, hold the rotating cylinder to rotate, so that the rotating cylinder rotates with the fixed screw, thereby rotating the workpiece clamped by the clamping plate to turn over. In this way, the worker can process the front and back surfaces of the workpiece without disassembling the workpiece, so that the worker does not need to reposition, thereby achieving the purpose of making the worker complete the turning over of the workpiece without disassembling the workpiece, and making the worker process more conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0021] Figure 2 is an enlarged view of part A in Figure 1

[0022] Figure 3 is an enlarged view of part B in Figure 2

[0023] ​​: 1, support platform; 10, X-axis moving device; 11, Y-axis moving device; 12, Z-axis moving device; 13, control system; 14, through hole; 2, clamping structure; 20, fixed plate; 21, rotating cylinder; 22, fixed screw; 23, clamping plate; 3, fixing device; 30, positioning plate; 31, positioning screw hole; 32, fixed screw hole; 33, positioning screw; 4, fixed structure; 40, limiting plate; 41, limiting disc; 42, limiting hole; 43, limiting hole; 44, limiting rod; 5, filling structure; 50, plug-in port; 51, filling plate. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings.

[0025] Embodiment, refer to Figure 1 , Figure 2 A three-axis motion high-precision control device based on machine vision, comprising a support platform 1, an X-axis moving device 10 arranged on the support, a Y-axis moving device 11 arranged on the X-axis moving device 10, a Z-axis moving device 12 arranged on the Y-axis moving device 11, a clamping structure 2 arranged on the support platform 1, and a control system 13 arranged on one side of the support platform 1 for controlling the X-axis moving device 10, the Y-axis moving device 11 and the Z-axis moving device 12, the clamping structure 2 comprising two fixed plates 20 arranged opposite on the support platform 1, two rotating cylinders 21 arranged on the side away from each other of the two fixed plates 20 respectively and extending into the space between the two fixed plates 20, threaded holes opened on the end face of the rotating cylinder 21 and penetrating through the rotating cylinder 21, fixed screws 22 threadedly connected to the rotating cylinder 21 through the threaded holes and extending into the space between the two fixed plates 20, and clamping plates 23 arranged on the end of the fixed screws 22 extending into the space between the two fixed plates 20. The rotating cylinder 21 is rotationally connected to the fixed plate 20. The workpiece is placed between the two clamping plates 23, then the rotating cylinder 21 is held and the fixed screw 22 is twisted, so that the two clamping plates 23 are close to each other and clamp the workpiece. Then the programmed program is input into the control system 13, and the machining structure on the Z-axis moving device 12 will process the workpiece on the clamp. When the front surface of the workpiece is processed and the back surface needs to be processed, the rotating cylinder 21 is held and rotated, so that the rotating cylinder 21 rotates with the fixed screw 22, thereby rotating the workpiece clamped by the clamping plate 23 to flip the workpiece. In this way, the worker can process the front and back surfaces of the workpiece without disassembling the workpiece, so that the worker does not need to reposition, thereby achieving the purpose of making the worker complete the flipping of the workpiece without disassembling the workpiece, and making the worker process more conveniently.

[0026] Although the arrangement of the clamping structure 2 makes it more convenient for workers to process, the processing structure on the Z-axis moving device 12 can exert pressure on the workpiece during processing, which can cause the rotating cylinder 21 to rotate, causing malfunctions during processing. In order to solve this technical problem, the fixing device 3 for fixing the rotating cylinder 21 is arranged at the end of the rotating cylinder 21 away from the fixed plate 20, the fixing device 3 comprises two positioning plates 30 arranged on both sides of the rotating cylinder 21 and perpendicular to the rotating cylinder 21, positioning screw holes 31 opened in the positioning plates 30 and penetrating the positioning plates 30, fixing screw holes 32 opened in the support platform 1 corresponding to the positioning screw holes 31, and positioning screws 33 screwed through the positioning screw holes 31 and the fixing screw holes 32 and connecting the support platform 1 through the positioning plates 30. Through the arrangement of the fixing device 3, workers can tighten the two positioning screws 33 when processing the workpiece, respectively threaded through the two positioning plates 30 and connected to the support platform 1, so as to fix the rotating cylinder 21. In this way, the rotating cylinder 21 will not rotate during processing, thereby preventing malfunctions during processing. In addition, due to the arrangement of the fixing device 3, the surface of the workpiece after rotation is flat. Because the positioning plates 30 are arranged on both sides of the rotating cylinder 21 and perpendicular to the rotating cylinder 21, the positioning screws 33 can only be screwed through the positioning plates 30 and connected to the support platform 1 after the rotating cylinder 21 is rotated by 180 degrees. In this way, the surface of the workpiece after rotation can be flat, thereby improving the stability of the clamping structure 2. When it is necessary to turn over the workpiece, the positioning screws 33 can be loosened to make the rotating cylinder 21 rotate and turn over the workpiece.

[0027] Although the arrangement of the fixing device 3 prevents the rotating cylinder 21 from rotating during processing, since the fixing screw 22 is screwed to the rotating cylinder 21, the fixing screw 22 can rotate after the workpiece is subjected to pressure after the rotating cylinder 21 is limited, causing malfunctions during processing. In order to solve this technical problem, with reference to Figure 3The embodiment is provided with a fixing structure 4 for fixing the fixed screw 22 at one end of the fixed screw 22 away from the clamping plate 23, the fixing structure 4 comprises a limiting plate 40 fixedly arranged on the circumferential surface of the fixed screw 22 at one end of the clamping plate 23, a limiting disc 41 arranged on the circumferential surface of the rotating cylinder 21 at one end away from the clamping plate 23, a limiting hole 42 opened on the limiting plate 40 and penetrating through the limiting plate 40, a plurality of limiting holes 43 opened on the limiting disc 41 and penetrating through the limiting disc 41 in a circular array with the center of the limiting disc 41 as a base point, and a limiting rod 44 penetrating through the limiting plate 40 and the limiting disc 41 through the limiting hole 42 and the limiting hole 43. Through the arrangement of the fixing structure 4, when the worker processes the workpiece, the limiting rod 44 can be pushed to penetrate through the limiting plate 40 and the limiting disc 41, so that the fixed screw 22 is fixed. When the workpiece needs to be clamped or disassembled, the limiting rod 44 only needs to be pulled out to rotate the fixed screw 22 to clamp or disassemble the workpiece.

[0028] In the embodiment, the supporting platform 1 is provided with a through hole 14 penetrating through the supporting platform 1, and the through hole 14 is located between the two fixed plates 20, so that when the clamping plate 23 clamps a long workpiece to turn over, the workpiece can be turned over through the through hole 14, thereby improving the applicability of the clamping structure 2.

[0029] Although the arrangement of the through hole 14 improves the applicability of the clamping structure 2, when the worker processes the workpiece, the worker will place a gasket on the bottom surface of the workpiece to prevent the workpiece from sliding up and down on the clamping plate 23 under pressure. The arrangement of the through hole 14 causes the gasket to have no place to be placed. In order to solve this technical problem, the embodiment is provided with a filling structure 5 on one side of the supporting platform 1 for filling the through hole 14, the filling structure 5 comprises a plug-in hole 50 opened on one side of the supporting platform 1 and communicating with the through hole 14, and a filling plate 51 plugged into the supporting platform 1 through the plug-in hole 50 and used for filling the through hole 14. When the workpiece needs to be turned over, the filling plate 51 is pulled out of the supporting platform 1, so that the through hole 14 is exposed to facilitate the turning over of the workpiece. After the turning over is completed, the filling plate 51 is pushed into the supporting platform 1, so that the through hole 14 is filled by the filling plate 51 to facilitate the worker to place the gasket.

[0030] Specific implementation process: the workpiece is placed between the two clamping plates 23, and then the two positioning screws 33 are screwed through the two positioning plates 30 to be threadedly connected to the support platform 1, so as to fix the rotating cylinder 21, and then the fixing screw 22 is screwed to make the two clamping plates 23 close to each other to clamp the workpiece, and then the limiting rod 44 is passed through the limiting plate 40 and the limiting disc 41, so that the fixing screw 22 is fixed, and then the programmed program is input into the control system 13, and the machining structure on the Z-axis moving device 12 will process the workpiece on the clamp, when the front surface of the workpiece is machined and the back surface needs to be machined, the positioning screw 33 is unscrewed to make the rotating cylinder 21 rotate to turn over the workpiece, and then the positioning screw 33 is screwed to threadedly connect the support platform 1 to fix the rotating cylinder 21, so that the back surface of the workpiece can be machined.

[0031] The embodiments of the specific implementation are the preferred embodiments of the application, not limited to the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A high-precision control device for three-axis motion based on machine vision, characterized by, The utility model provides a kind of supporting platform (1), X-axis moving device (10) being arranged on support, Y-axis moving device (11) being arranged on X-axis moving device (10), Z-axis moving device (12) being arranged on Y-axis moving device (11), clamping structure (2) being arranged on supporting platform (1) and control system (13) being arranged on the side of supporting platform (1) for controlling X-axis moving device (10), Y-axis moving device (11) and Z-axis moving device (12), the clamping structure (2) includes two fixed plates (20) being oppositely arranged on supporting platform (1), two rotating cylinders (21) being respectively arranged on the side of two fixed plates (20) away from each other and extending into between two fixed plates (20), threaded hole being opened in the end face of rotating cylinder (21) and penetrating rotating cylinder (21), fixed screw (22) being connected by threaded hole in rotating cylinder (21) and extending into between two fixed plates (20) and clamping plate (23) being arranged on the end of fixed screw (22) extending into between two fixed plates (20), and rotating cylinder (21) is rotationally connected to fixed plate (20).

2. The machine vision-based high-precision control device for three-axis movement according to claim 1, characterized in that, The end of the rotating cylinder (21) away from the fixed plate (20) is provided with a fixing device (3) for fixing the rotating cylinder (21).

3. The machine vision-based high-precision control device for three-axis movement according to claim 2, characterized in that, The fixing device (3) includes two positioning plates (30) arranged on both sides of the rotating cylinder (21) and perpendicular to the rotating cylinder (21), a positioning screw hole (31) opened in the positioning plate (30) and penetrating the positioning plate (30), a fixed screw hole (32) opened in the supporting platform (1) corresponding to the positioning screw hole (31), and a positioning screw (33) threaded through the positioning plate (30) and connected to the supporting platform (1) through the positioning screw hole (31) and the fixed screw hole (32).

4. The machine vision-based high-precision control device for three-axis movement according to claim 1, wherein, The end of the fixed screw (22) away from the clamping plate (23) is provided with a fixing structure (4) for fixing the fixed screw (22).

5. The machine vision-based high-precision control device for three-axis movement according to claim 4, wherein, The fixing structure (4) includes a limiting plate (40) fixedly arranged on the peripheral surface of the end of the fixed screw (22) away from the clamping plate (23), a limiting disc (41) arranged on the peripheral surface of the end of the rotating cylinder (21) away from the clamping plate (23), a limiting hole (42) opened in the limiting plate (40) and penetrating the limiting plate (40), a plurality of limiting holes (43) opened in the limiting disc (41) and penetrating the limiting disc (41) in a circular array with the center of the limiting disc (41) as the base point, and a limiting rod (44) threaded through the limiting plate (40) and the limiting disc (41) through the limiting hole (42) and the limiting hole (43).

6. The machine vision-based high-precision control device for three-axis movement according to claim 1, wherein A through hole (14) penetrating the supporting platform (1) is opened in the supporting platform (1), and the through hole (14) is located between the two fixed plates (20).

7. The machine vision-based high-precision control device for three-axis movement according to claim 6, characterized in that, A filling structure (5) is arranged on one side of the supporting platform (1) for filling the through hole (14).

8. The machine vision-based high-precision control device of claim 7, wherein, The filling structure (5) comprises an insertion opening (50) opened on one side of the support platform (1) and communicating with the through opening (14), and a filling plate (51) inserted into the support platform (1) through the insertion opening (50) and used for filling the through opening (14).

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