A positioning and machining fixture

Abstract

This invention belongs to the field of fixture technology, specifically a positioning and machining fixture, including a mother plate and a retaining plate. Both the mother plate and the retaining plate have circular holes for placing workpieces. The fixture also includes a pressure plate for pressing the mother plate and the retaining plate together, the pressure plate being mounted on the upper surface of the retaining plate; and fixing posts mounted on the pressure plate and the mother plate. Because the mother plate has circular holes for machining the workpieces, no tool interference occurs when drilling holes on both sides of the workpiece, and the workpieces do not need to be removed and reinstalled, making it convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of fixtures, specifically a positioning and machining fixture. Background Technology

[0002] The air suspension system automatically adjusts the suspension stiffness according to road conditions and driving needs. It consists of an air supply system, electronic control unit, dual-chamber air springs, and electronically controlled shock absorbers. Primarily, the dual-chamber air springs adjust the air in the auxiliary air chamber via a solenoid valve based on road vibrations, thereby automatically adjusting the vehicle height. The base, armature, and latch form an adaptive structure located in the auxiliary air chamber of the dual-chamber air springs, used to control the closing of the solenoid valve. The base has a hollow structure, with its internal cavity composed of multiple annular rings of varying diameters. During manufacturing, the base is first clamped using a jig, and then machined using a grinding machine.

[0003] When performing double-sided drilling on a base, the existing technology uses a fixture to hold the base in place. After drilling on one side of the base, the base needs to be released, flipped over, and then held in place again by the fixture before the hole on the other side is machined by a grinding machine. This process is quite cumbersome.

[0004] Therefore, the present invention provides a positioning and machining fixture. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The positioning and processing fixture of the present invention includes a mother plate and a retaining plate. The mother plate and the retaining plate are provided with circular holes. The circular holes of the retaining plate are used to place the workpiece. The fixture also includes: a pressure plate for pressing the mother plate and the retaining plate, the pressure plate being installed on the upper surface of the retaining plate; and a fixing post installed on the pressure plate and the mother plate.

[0007] Preferably, both the mother plate and the retaining plate have a plurality of circular holes, and after the retaining plate is installed on the mother plate, the plurality of circular holes on both can be aligned simultaneously.

[0008] Preferably, it further includes: a wiping assembly mounted on the retaining plate, the wiping assembly being used to wipe the position on the mother plate that contacts the retaining plate, the wiping assembly including: four rotating rods symmetrically mounted on both sides of the retaining plate; and a push plate mounted between two rotating rods located symmetrically on both sides of the retaining plate, the push plate being rotatably connected to the rotating rods.

[0009] Preferably, it further includes: a collection groove formed on the mother plate; a drain hole formed on the mother plate, through which debris enters the collection groove; and an air suction device installed in the collection groove.

[0010] Preferably, the wiping assembly further includes: a wiping block slidably mounted on the push plate, the wiping block being used to wipe the side of the push plate that contacts the processing debris; and a first threaded rod for driving the wiping block to move, the first threaded rod being rotatably mounted on the push plate.

[0011] Preferably, the wiping assembly further includes: a ratchet with a fixing plate mounted on the first threaded rod; a check block for limiting the unidirectional rotation of the ratchet, the check block being slidably connected to the push plate; a slider slidably mounted on the push plate, the slider being within the movement range of the rotating rod, a telescopic rod rotatably mounted on the slider, the other end of the telescopic rod being rotatably connected to the check block, the slider slidingly driving the check block to move via the telescopic rod; a first torsion spring installed between the first threaded rod and the rotating rod; and a first spring installed between the slider and the push plate.

[0012] Preferably, it further includes: a plurality of positioning holes formed on the mother plate and the retaining plate, the mother plate and the retaining plate being positioned and fixed together through the positioning holes; and a plurality of nozzles fixedly mounted on the push plate, the nozzles being capable of spraying air from both sides, the nozzles being used to clean the positioning holes on the mother plate and the retaining plate by air spraying.

[0013] Preferably, it further includes: a support rod detachably mounted on the mother plate; a mounting box slidably mounted on the support rod; and an airbag mounted on the mounting box, the airbag being used to supply air to the nozzle.

[0014] Preferably, the wiping assembly further includes: a positioning groove formed on the mother plate; and an insert block fixedly installed at the bottom end of the push plate, wherein the push plate is slidably connected to the positioning groove through the insert block.

[0015] Preferably, it further includes: a ventilation channel formed on the mother plate, the two ends of the ventilation channel being connected to the airbag and the positioning groove respectively, and the outlet of the ventilation channel being on the same line as the positioning hole; a plug block slidably mounted on the positioning groove, the plug block being used to block the ventilation channel, the side wall of the plug block being inclined, the plug block being able to push the plug block downward when the plug block is moved, the plug block being connected to the nozzle; a second spring mounted on the plug block; a pressure plate slidably mounted on the mounting box; a second threaded rod driving the pressure plate to move, the second threaded rod being rotatably connected to the mounting box, and a second torsion spring being installed between the second threaded rod and the mounting box.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The positioning and machining fixture of the present invention provides a convenient tooling solution by opening circular holes on the mother plate at the positions where the workpiece needs to be machined. Therefore, when machining the workpiece on both sides, there will be no tool interference, and the workpiece does not need to be removed and reinstalled.

[0018] 2. The positioning and machining fixture of the present invention, by setting a push plate, can automatically clean the debris on the mother plate at the position where it contacts the retaining plate during installation, thus ensuring the installation effect of the mother plate and the retaining plate.

[0019] 3. The positioning and processing fixture of the present invention, by setting a nozzle, when the push plate cleans the debris at the position where the mother plate and the retaining plate are in contact, can automatically blow air into the positioning holes on the mother plate and the retaining plate in conjunction with the airbag to blow away the debris in the positioning holes, so as to facilitate the installation of the mother plate and the retaining plate. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0022] Figure 2 This is a cross-sectional view of the processed part of the present invention;

[0023] Figure 3 This is a perspective view of Embodiment 2 of the present invention;

[0024] Figure 4 This is a schematic diagram of the wiping assembly of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the rotating rod and push plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the nozzle structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the insert block of the present invention;

[0028] Figure 8 This is a partial horizontal cross-sectional view of the mother plate of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the airbag and pressure plate of the present invention;

[0030] Figure 10 A cross-sectional view of the mother plate of this invention;

[0031] In the diagram: 1. Mother plate; 2. Holding plate; 3. Round hole; 4. Pressure plate; 5. Fixing post; 6. Wiping assembly; 61. Rotating rod; 62. Push plate; 63. Wiping block; 64. Threaded rod No. 1; 65. Ratchet; 66. Check block; 67. Sliding block; 68. Telescopic rod; 69. Torsion spring No. 1; 610. Spring No. 1; 611. Positioning groove; 612. Insert block; 7. Collection groove; 8. Leakage hole; 9. Suction device; 10. Positioning hole; 11. No. 1 nozzle; 12. Support rod; 13. Mounting box; 14. Airbag; 15. Ventilation channel; 16. Block; 17. Spring No. 2; 18. Pressure plate; 19. Threaded rod No. 2. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1

[0033] like Figures 1-2 As shown in the figure, a positioning and machining fixture according to an embodiment of the present invention includes a mother plate 1 and a retaining plate 2. The mother plate 1 and the retaining plate 2 are provided with circular holes 3. The circular holes 3 of the retaining plate 2 are used to place the workpiece. The fixture also includes: a pressure plate 4 for pressing the mother plate 1 and the retaining plate 2, the pressure plate 4 being installed on the upper surface of the retaining plate 2; and a fixing post 5 installed on the pressure plate 4 and the mother plate 1.

[0034] Specifically, existing fixtures, after clamping the base and drilling holes on one side, require releasing the base, flipping it over, re-clamping it with the fixture, and then machining the holes on the other side using a grinding machine, which is cumbersome. When using this positioning and machining fixture for double-sided machining of the base workpiece, a retaining spring can be inserted into the circular hole 3 of the retaining plate 2. Before machining, the mother plate 1 and retaining plate 2 are aligned, ensuring the axes of the circular holes 3 on the mother plate 1 and retaining plate 2 are aligned. The workpiece is then inserted into the circular hole 3 of the retaining plate 2, and the retaining spring is used to fix the workpiece to the retaining plate 2. The pressure plate 4 is installed on the retaining plate 2 and then fixed by the fixing column 5. This clamps the retaining plate 2 and the mother plate 1 together, thus completing the clamping of the workpiece. The mother plate 1 is then installed on the robotic arm of the grinding device, which can then drill a hole in the center of the workpiece. After one side of the workpiece is processed, the robotic arm can be controlled to rotate the mother plate 1 and the workpiece to drill a hole on the other side of the workpiece. Since the mother plate 1 has the position where the workpiece needs to be processed, namely the round hole 3, there will be no tool interference when processing the workpiece. At the same time, there is no need to remove the workpiece and reinstall it, making it convenient to use.

[0035] like Figure 1 and Figure 2As shown, both the mother plate 1 and the retaining plate 2 have a plurality of circular holes 3. After the retaining plate 2 is installed on the mother plate 1, the plurality of circular holes 3 on both can be aligned simultaneously.

[0036] Specifically, by setting multiple circular holes 3, it is convenient to process multiple workpieces at once, making it easy to use. Example 2

[0037] like Figure 3 and Figure 5 As shown in Example 1, another embodiment of the present invention is as follows:

[0038] It also includes: a wiping assembly 6 installed on the retaining plate 2, the wiping assembly 6 being used to wipe the position on the mother plate 1 that contacts the retaining plate 2, the wiping assembly 6 including: four rotating rods 61 rotatably and symmetrically installed on both sides of the retaining plate 2; and a push plate 62 installed between two rotating rods 61 located on both sides of the retaining plate and symmetrically, the push plate 62 being rotatably connected to the rotating rods 61.

[0039] Specifically, since the fixture is used in conjunction with the grinding device, the mother plate 1 will contain machining debris. Initially, the rotating rod 61 is vertically downward under the action of gravity. When installing the mother plate 1 and the retaining plate 2, the retaining plate 2 is first placed above the mother plate 1, so that the mother plate 1 and the retaining plate 2 are aligned. Then, the retaining plate 2 is moved downward so that the mother plate 1 and the retaining plate 2 are in contact. During the contacting process, the push plate 62 on the retaining plate 2 first contacts the surface of the mother plate 1. The retaining plate 2 continues to move downward, and the rotating rod 61 rotates, causing the two push plates 62 to move away from each other. As the push plate 62 moves in the direction of the rotation, it can push the debris on the mother plate 1 at the position where it is in contact with the retaining plate 2 to the left and right sides until the mother plate 1 and the retaining plate 2 are in contact. At this time, the rotating rod 61 is in a horizontal state, and the push plate 62 is located on both sides of the retaining plate 2. The debris on the mother plate 1 at the position where it is in contact with the retaining plate 2 is pushed to both sides of the retaining plate 2. By setting the push plate 62, the debris on the mother plate 1 at the position where it is in contact with the retaining plate 2 can be automatically cleaned when the mother plate 1 and the retaining plate 2 are installed, so as to ensure the installation effect of the mother plate 1 and the retaining plate 2.

[0040] like Figure 4 and Figure 8 As shown, it also includes: a collection groove 7 formed on the mother plate 1; a drain hole 8 formed on the mother plate 1, through which debris enters the collection groove 7; and an air suction device 9 installed in the collection groove 7.

[0041] Specifically, the suction device 9 can be a miniature suction pump. By setting up the collection tank 7 and the suction device 9, the debris pushed to both sides of the retaining plate 2 can be collected without controlling other devices to process the debris, making it convenient to use.

[0042] like Figure 4 , Figure 5 and Figure 6 As shown, the wiping assembly 6 further includes: a wiping block 63 slidably mounted on the push plate 62, the wiping block 63 being used to wipe the side of the push plate 62 that is in contact with the processing debris; and a first threaded rod 64 for driving the wiping block 63 to move, the first threaded rod 64 being rotatably mounted on the push plate 62.

[0043] Specifically, after the plate 2 is attached to the mother plate 1, the first threaded rod 64 is rotated, causing the wiping block 63 to slide back and forth on the surface of the push plate 62. This causes the debris to be scraped by the wiping plate to the drain hole 8 and sucked away by the suction device 9. At the same time, the side of the push plate 62 that is in contact with the debris is scraped off, and the debris adhering to the surface is pushed to the drain hole 8 and sucked away, thus avoiding the problem of residual debris on the surface.

[0044] like Figure 4 , Figure 6 and Figure 7 As shown, the wiping assembly 6 further includes: a ratchet 65 with a fixing plate mounted on the first threaded rod 64; a check block 66 for limiting the unidirectional rotation of the ratchet 65, the check block 66 being slidably connected to the push plate 62; a slider 67 slidably mounted on the push plate 62, the slider 67 being within the movement range of the rotating rod 61, a telescopic rod 68 being rotatably mounted on the slider 67, the other end of the telescopic rod 68 being rotatably connected to the check block 66, the slider 67 sliding through the telescopic rod 68 to drive the check block 66 to move; a first torsion spring 69 installed between the first threaded rod 64 and the rotating rod 61; and a first spring 610 installed between the slider 67 and the push plate 62.

[0045] Specifically, the check block 66 adopts a telescopic structure. When the push plate 62 moves on the surface of the mother plate 1, the rotating rod 61 rotates relative to the push plate 62. The check block 66 restricts the first threaded rod 64 from rotating together with the rotating rod 61. Therefore, the first torsion spring 69 twists. During the rotation of the rotating rod 61, it can push the slider 67 to move downward, causing the first spring 610 to compress. The downward movement of the slider 67 causes the telescopic rod 68 to extend and rotate. When the rotating rod 61 is about to rotate to a horizontal state, the telescopic rod 68 cannot extend or retract and pulls the check block 66. The check block 66 moves away from the ratchet 65. When the rotating rod 61 is in a horizontal state, the check block 66 does not contact the ratchet 65. Therefore, the ratchet 65 and the first threaded rod 64 can rotate under the action of the first torsion spring 69, causing the slider 67 to move back and forth. After the rotating rod 61 keeps the plate 2 and the mother plate 1 separated, the rotating rod 61 rotates to a vertical state. Under the action of the first spring 610, the slider 67 returns to its initial position. The slider 67 can push the check block 66 to engage with the ratchet 65 again through the telescopic rod 68.

[0046] like Figure 4 and Figure 6 As shown, it also includes: a plurality of positioning holes 10 formed on the mother plate 1 and the retaining plate 2, the mother plate 1 and the retaining plate 2 being positioned and fixed together by the positioning holes 10; a plurality of nozzles 11 fixedly installed on the push plate 62, the nozzles 11 being able to spray air from both sides, the nozzles 11 being used to spray and clean the positioning holes 10 on the mother plate 1 and the retaining plate 2.

[0047] Specifically, before use, connect the nozzle 11 to the air blowing device. When the push plate 62 slides on the surface of the mother plate 1, when the nozzle 11 is located at the positioning hole 10, control the air blowing device to supply air to the nozzle 11. The upper and lower surfaces of the nozzle 11 blow out air to blow away the debris in the positioning hole 10, which facilitates the installation of the mother plate 1 and the retaining plate 2. Since the positioning hole 10 is small in size and difficult to clean, the method of blowing away the debris by air blowing from the nozzle 11 is simple and convenient to use.

[0048] like Figure 4 and Figure 9 As shown, it also includes: a support rod 12 detachably mounted on the mother plate 1; a mounting box 13 slidably mounted on the support rod 12; and an airbag 14 mounted on the mounting box 13, the airbag 14 being used to supply air to the nozzle 11.

[0049] Specifically, before use, the support rod 12 and the mounting box 13 can be installed on the mother plate 1, and the airbag 14 can be connected to the nozzle 11. During installation, by pressing the airbag 14, the air in the airbag 14 is sprayed out from the nozzle 11 to achieve the action of cleaning debris from the positioning hole 10. The structure is simple and the price is low.

[0050] like Figure 7 and Figure 8 As shown, the wiping assembly 6 further includes: a positioning groove 611 formed on the mother plate 1; and an insert block 612 fixedly installed at the bottom end of the push plate 62, wherein the push plate 62 is slidably connected to the positioning groove 611 through the insert block 612.

[0051] Specifically, before installation, insert the plug 612 at the bottom of the push plate 62 into the positioning groove 611, and then press down the retaining plate 2. No prior alignment is required, making it convenient to use.

[0052] like Figures 7-10As shown, it also includes: a ventilation channel 15 formed on the mother plate 1, the two ends of the ventilation channel 15 being connected to the airbag 14 and the positioning groove 611 respectively, and the outlet of the ventilation channel 15 being on the same line as the positioning hole 10; a blocking block 16 slidably installed on the positioning groove 611, the blocking block 16 being used to block the ventilation channel 15, the side wall of the insert block 612 being inclined, the insert block 612 being able to push the blocking block 16 downward when moving, the insert block 612 being connected to the nozzle 11; a second spring 17 installed on the blocking block 16; a pressure plate 18 slidably installed on the mounting box 13; a second threaded rod 19 driving the pressure plate 18 to move, the second threaded rod 19 being rotatably connected to the mounting box 13, and a second torsion spring being installed between the second threaded rod 19 and the mounting box 13.

[0053] Specifically, the airbag 14 is equipped with a one-way vent valve on the outside of the mounting box 13, allowing air to enter the airbag 14 only from the outside. Before use, the second threaded rod 19 is rotated, causing the pressure plate 18 to slide to one end of the mounting box 13. At this time, the airbag 14 inflates, and external air is drawn into the airbag 14. The second torsion spring twists. Since the outlet of the ventilation channel 15 is blocked by the block 16, the air inside the airbag 14 cannot be discharged. The second threaded rod 19 has a rotational tendency under the action of the second torsion spring, meaning that the pressure plate 18 has a tendency to squeeze the airbag 14. When the nozzle 11 on the push plate 62 moves to the positioning hole 10, the insert block 612 contacts the block 16 and pushes the block 16 towards the positioning hole 10. As the push plate moves downward, spring 17 is compressed, and block 16 moves downward. This connects the ventilation channel 15 with insert block 612 and nozzle 11, allowing pressure plate 18 to move and compress airbag 14. Air from airbag 14 can then be discharged from nozzle 11, which sprays air to clean positioning hole 10. After nozzle 11 on push plate 62 passes positioning hole 10, insert block 612 and block 16 no longer contact each other. Block 16 moves upward under the force of spring 17 and blocks ventilation channel 15 again. There is no need to control airbag 14 to blow air while push plate 62 moves nozzle 11. During the movement of push plate 62, air can be automatically sprayed at nozzle 11 located at positioning hole 10, making it convenient to use.

[0054] Working principle: Before use, control the rotation of the second threaded rod 19, causing the pressure plate 18 to slide to one end of the mounting box 13. At this time, the airbag 14 inflates, and external air is drawn into the airbag 14. The second torsion spring twists. Since the outlet of the ventilation channel 15 is blocked by the block 16, the air in the airbag 14 cannot be discharged. Under the action of the second torsion spring, the second threaded rod 19 has a rotational tendency, that is, the pressure plate 18 has a tendency to squeeze the airbag 14. Insert the insert 612 at the bottom of the push plate 62 into the positioning groove 611, and then press down the retaining plate 2, causing the rotating rod 61 to rotate. The push plates 62 move away from each other. During this movement, the push plates 62 can push away the debris on the mother plate 1 that is in contact with the retaining plate 2 to the left and right sides until the mother plate 1 and the retaining plate 2 are in contact. When the nozzle 11 on the push plate 62 moves to the positioning hole 10, the insert block 612 contacts the block 16 and pushes the block 16 downward. At this time, the second spring 17 is compressed. After the block 16 moves downward, the ventilation channel 15 is connected to the insert block 612 and the nozzle 11. Therefore, the pressure plate 18 can move, so that the air bag 14 is squeezed. The air in the air bag 14 can be discharged from the nozzle 11, and the nozzle 11 sprays air. Clean the positioning hole 10. After the nozzle 11 on the push plate 62 passes through the positioning hole 10, the insert block 612 and the block block 16 do not contact each other. The block block 16 moves upward under the force of the second spring 17 and blocks the ventilation channel 15 again. When the mother plate 1 and the retaining plate 2 are in contact, the rotating rod 61 is in a horizontal state, and the push plate 62 is located on both sides of the retaining plate 2. The debris on the mother plate 1 at the position where it is in contact with the retaining plate 2 is pushed to both sides of the retaining plate 2. Control the first threaded rod 64 to rotate, so that the wiping block 63 slides back and forth on the surface of the push plate 62, so that the debris is scraped by the wiping plate to the drain hole 8 and sucked away by the suction device 9. Then, insert the positioning pin into the positioning hole 10 to initially install the mother plate 1 and the retaining plate 2. Then, insert the workpiece into the round hole 3 of the retaining plate 2 and fix the workpiece on the retaining plate 2 by means of a snap ring. Then, install the pressure plate 4 on the retaining plate 2 and fix it by means of the fixing post 5. This can press the retaining plate 2 and the mother plate 1 together, thus completing the clamping of the workpiece. Install the mother plate 1 on the robotic arm of the grinding device, and the grinding device can drill a hole in the center of the workpiece. After processing one side of the workpiece, the robotic arm can be controlled to drive the mother plate 1 and the workpiece to flip, so that the other side of the workpiece can be drilled.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning and machining fixture, comprising a mother plate (1) and a retaining plate (2), wherein circular holes (3) are formed on the mother plate (1) and the retaining plate (2), and the circular holes (3) of the retaining plate (2) are used to place a workpiece, characterized in that, Also includes: A pressure plate (4) for pressing the mother plate (1) and the retaining plate (2) is mounted on the upper surface of the retaining plate (2); A fixing post (5) is installed on the pressure plate (4) and the mother plate (1), the fixing post (5) being used to hold the workpiece in place; It also includes: a wiping assembly (6) mounted on the retaining plate (2), the wiping assembly (6) being used to wipe the position on the mother plate (1) that contacts the retaining plate (2), the wiping assembly (6) comprising: Four rotating rods (61) are symmetrically mounted on both sides of the retaining plate (2). A push plate (62) is installed between two symmetrical rotating rods (61) located on both sides, and the push plate (62) is rotatably connected to the rotating rods (61); Also includes: A plurality of positioning holes (10) are provided on the mother plate (1) and the retaining plate (2), and the mother plate (1) and the retaining plate (2) are positioned and fixed through the positioning holes (10); Several nozzles (11) are fixedly installed on the push plate (62). Both sides of the nozzles (11) can spray air. The nozzles (11) are used to spray air to clean the positioning holes (10) on the mother plate (1) and the retaining plate (2). Also includes: A support rod (12) is detachably mounted on the mother plate (1). Mounting box (13) is slidably mounted on the support rod (12); An airbag (14) is installed on the mounting box (13), the airbag (14) being used to supply air to the nozzle (11); The wiping assembly (6) also includes: A positioning groove (611) is formed on the mother plate (1); An insert (612) is fixedly installed at the bottom of the push plate (62), and the push plate (62) is slidably connected to the positioning groove (611) through the insert (612); A ventilation channel (15) is provided on the mother plate (1). The two ends of the ventilation channel (15) are connected to the air bag (14) and the positioning groove (611) respectively. The outlet of the ventilation channel (15) is on the same line as the positioning hole (10).

2. The positioning and machining fixture according to claim 1, characterized in that: Both the mother plate (1) and the retaining plate (2) contain a number of round holes (3). After the retaining plate (2) is installed on the mother plate (1), the number of round holes (3) on both can be aligned at the same time.

3. A positioning and machining fixture according to claim 2, characterized in that: Also includes: Collection groove (7) is formed on the mother plate (1); The debris enters the collection tank (7) through the drain hole (8) opened on the mother plate (1); An air suction device (9) is installed in the collection tank (7).

4. A positioning and machining fixture according to claim 3, characterized in that: The wiping assembly (6) also includes: A wiping block (63) is slidably mounted on the push plate (62), the wiping block (63) being used to wipe the side of the push plate (62) that is in contact with the processing debris; A first threaded rod (64) is used to drive the movement of the rubbing block (63), and the first threaded rod (64) is rotatably mounted on the push plate (62).

5. A positioning and machining fixture according to claim 4, characterized in that: The wiping assembly (6) also includes: A ratchet (65) is fixedly installed on the first threaded rod (64); A check block (66) is used to limit the unidirectional rotation of the ratchet (65), and the check block (66) is slidably connected to the push plate (62); A slider (67) is slidably mounted on the push plate (62). The slider (67) is within the movement range of the rotating rod (61). A telescopic rod (68) is rotatably mounted on the slider (67). The other end of the telescopic rod (68) is rotatably connected to the check block (66). The slider (67) slides through the telescopic rod (68) to drive the check block (66) to move. A torsion spring (69) is installed between the first threaded rod (64) and the rotating rod (61). A first spring (610) is installed between the slider (67) and the push plate (62).

6. A positioning and machining fixture according to claim 5, characterized in that: Also includes: A blocking block (16) is slidably installed on the positioning groove (611). The blocking block (16) is used to block the ventilation channel (15). The side wall of the insert (612) is inclined. When the insert (612) moves, it can push the blocking block (16) downward through the inclined surface. The insert (612) is connected to the nozzle (11). The second spring (17) is installed on the block (16); A pressure plate (18) is slidably mounted on the mounting box (13); A second threaded rod (19) drives the pressure plate (18) to move. The second threaded rod (19) is rotatably connected to the mounting box (13). A second torsion spring is installed between the second threaded rod (19) and the mounting box (13).

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