High-strength anti-fatigue work fixture and using method thereof

Abstract

The invention relates to the technical field of tool clamps, and discloses a high-strength anti-fatigue tool clamp and a using method thereof.The high-strength anti-fatigue tool clamp comprises a base, a sliding groove is formed in the upper surface of the base in a penetrating mode, two sliding blocks are slidably installed on the inner wall of the sliding groove, and U-shaped frames are fixedly installed on the upper surfaces of the two sliding blocks; a square clamping block is rotationally installed between the outer surfaces of the two opposite sides of the U-shaped frame, the four side faces of the square clamping block are all clamping faces, and an overturning mechanism for driving the square clamping block to overturn is installed on the outer surface of the U-shaped frame. The worm gear is driven by the worm to rotate by 90 degrees, so that the worm gear can drive the square clamping block to turn over by 90 degrees, the clamping face, just participating in clamping operation, of the square clamping block is replaced, the situation that a workpiece is clamped by using the same clamping face for a long time is avoided, different clamping faces are replaced for use, excessive abrasion and stress concentration of the clamping faces are relieved, and the clamping efficiency is improved. And the service life of the square clamping block is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of tooling fixtures, and in particular to a high-strength anti-fatigue tooling fixture and a use method thereof. Background Art

[0002] A fixture is a process device used to quickly fasten the workpiece during processing so that the machine tool, tool and workpiece maintain the correct relative position. In other words, tooling and fixtures are indispensable components of mechanical processing. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent and environmentally friendly directions, fixture technology is developing towards high precision, high efficiency, modular, combined, universal and economic directions. Tooling, that is, process equipment, refers to the general term for various tools used in the manufacturing process, including tools, inspection fixtures, auxiliary tools, pliers tools and workstation equipment, etc. Tooling is its general abbreviation. Fixtures are also called fixtures. Broadly speaking, any device used to quickly, conveniently and safely install workpieces in any process in the process can be called a fixture, such as welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures. Among them, machine tool fixtures are the most common.

[0003] The existing stable tooling fixture (Announcement No.: CN217167524U) has at least the following disadvantages: the above patent rotates the No. 1 threaded rod to push the slider to move inside the slide slot, so that the No. 2 clamping block is close to the No. 1 clamping block to clamp the workpiece; because during continuous processing, the clamping surface of the clamping block and the workpiece are always kept in a tight force state, it is easy to increase excessive wear and stress concentration on the contact surface of the clamping block, which will cause the clamping surface of the clamping block to be uneven over a long period of time, affecting the subsequent clamping effect; debris is easy to remain on the clamping block. If it is not cleaned immediately, these debris may be embedded between the workpiece and the fixture in the next round of clamping, thereby affecting the accuracy and stability of clamping. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a high-strength anti-fatigue fixture and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-strength anti-fatigue tooling fixture comprises a base, the upper surface of the base is penetrated by a slide groove, the inner wall of the slide groove is slidably mounted with two sliders, the upper surfaces of the two sliders are fixedly mounted with a U-shaped frame, a square clamp block is rotatably mounted between the outer surfaces of the opposite sides of the U-shaped frame, the four side surfaces of the square clamp block are all clamping surfaces, and the outer surface of the U-shaped frame is mounted with a flipping mechanism for driving the square clamp block to flip.

[0007] As a further solution of the present invention, the flipping mechanism includes a worm gear fixedly installed at the rotation center of the square clamp block, a worm is rotatably installed on the outer surface of the U-shaped frame close to the worm gear, the worm is meshed with the worm wheel, and a driving assembly for driving the worm to rotate is installed between the U-shaped frame and the base.

[0008] As a further solution of the present invention, the driving assembly includes a transmission shaft rotatably mounted on the outer surface of the U-shaped frame, a driving bevel gear is fixedly mounted on the top of the transmission shaft, a driven bevel gear is fixedly mounted on one end of the worm, the driving bevel gear is meshed with the driven bevel gear, a first rack is fixedly mounted on the upper surface of the base close to the transmission shaft, a first one-way bearing is mounted on the outer surface of the bottom end of the transmission shaft, a first gear that can rotate in one direction is mounted on the bottom end of the transmission shaft through the first one-way bearing, and the first gear is intermittently meshed with the first rack.

[0009] As a further solution of the present invention, cleaning mechanisms for cleaning the surfaces of the square clamps are installed at both end portions of the base, and the cleaning mechanisms include a plurality of L-shaped plates fixedly installed at the ends of the base, and spring rods are fixedly installed through the outer surfaces of the plurality of L-shaped plates, and a C-shaped plate is fixedly installed between the telescopic ends of the plurality of spring rods, and two supporting rollers are rotatably installed between the upper and lower outer surfaces of the C-shaped plates, and a cleaning belt is sleeved on the outer surfaces of the two supporting rollers, and a plurality of brushes are evenly and fixedly installed on the outer surfaces of the cleaning belts, and a transmission assembly is installed between one of the supporting rollers and the base.

[0010] As a further solution of the present invention, the transmission assembly includes a rotating rod fixedly installed at the rotation center of one of the support rollers, a second one-way bearing is installed on the outer surface of the bottom end of the rotating rod, a second gear that can rotate in one direction is installed on the bottom end of the rotating rod through the second one-way bearing, an installation groove is opened on the upper surface of the base, a second rack is fixedly installed on the inner wall of the installation groove, and the second gear is meshed with the second rack.

[0011] As a further solution of the present invention, a dust collecting hopper is fixedly and obliquely installed at the bottom end of the C-shaped plate close to the U-shaped frame, and the top of the dust collecting hopper is an open structure.

[0012] As a further solution of the present invention, a locking mechanism is installed on the outer surface of the U-shaped frame away from the worm gear, and the locking mechanism includes a limit rod fixedly installed on the outer surface of the U-shaped frame, and a movable plate is slidably installed on the outer surface of the limit rod, and an insertion rod is fixedly installed on the outer surface of the movable plate close to the U-shaped frame, and the insertion rod is inserted through the outer surface of the U-shaped frame, and four insertion holes matching the insertion rod are evenly penetrated in the circumferential direction of the end of the square clamp close to one end of the movable plate, and a locking assembly is installed between the movable plate and the base.

[0013] As a further solution of the present invention, the locking assembly includes a guide column fixedly installed on the bottom end of the movable plate, and a guide groove is opened on the upper surface of the base close to the movable plate. The guide groove is a lightning-shaped structure, and the guide column is slidably installed on the inner wall of the guide groove.

[0014] As a further solution of the present invention, a bidirectional screw is rotatably installed between the inner walls at the opposite ends of the slide groove, and the two ends of the bidirectional screw respectively penetrate the outer surfaces of the two sliders and are threadedly connected thereto, and a stepper motor is fixedly installed at the end of one end of the base, and the output end of the stepper motor penetrates the outer surface of the base and is fixedly installed with the rotation center of the bidirectional screw.

[0015] A method for using a high-strength anti-fatigue fixture comprises the following steps:

[0016] S1: Place the workpiece to be clamped in the middle of the base, and use a stepper motor to drive the bidirectional lead screw to rotate, so that the sliders threaded at both ends of the bidirectional lead screw drive the U-shaped frame and the square clamp block to move closer to the workpiece as a whole, so that the two square clamp blocks arranged opposite to each other clamp and fix the workpiece;

[0017] S2: When releasing the workpiece, the stepper motor drives the bidirectional lead screw to reverse, so that the two oppositely arranged square clamps move away from each other. When the U-shaped frame moves to the first rack, the first gear installed on the U-shaped frame will mesh with the first rack, so that the first gear drives the transmission shaft to rotate through the first one-way bearing, so that the transmission shaft drives the active bevel gear to rotate, so that the active bevel gear drives the driven bevel gear meshed with it to rotate, so that the driven bevel gear can drive the worm wheel to rotate 90° through the worm, so that the worm wheel can drive the square clamp to flip 90°, and the clamping surface of the square clamp that just participated in the clamping operation is replaced;

[0018] S3: When the first gear moves quickly to the end of the base, the first gear disengages from the first rack, causing the square clamp to stop rotating. At the same time, the dust collecting hopper will abut against the side of the U-shaped frame, so that when the U-shaped frame continues to move, it can push the C-shaped plate to move as a whole through the dust collecting hopper. At the same time, the brush installed on the cleaning belt will contact the outer surface of the square clamp. When the C-shaped plate moves, the second gear will roll on the second rack through the rotating rod, so that the second gear can drive the rotating rod to rotate through the second one-way bearing, so that the rotating rod drives the brush on the cleaning belt to move through the supporting roller, so that the brush can clean the surface of the square clamp.

[0019] The beneficial effects of the present invention are:

[0020] 1. The stepper motor drives the bidirectional screw to reverse, so that the two relatively arranged square clamps move away from each other. When the U-shaped frame moves to the first rack, the first gear installed on the U-shaped frame will mesh with the first rack, so that the first gear drives the transmission shaft to rotate through the first one-way bearing, so that the transmission shaft drives the active bevel gear to rotate, so that the active bevel gear drives the driven bevel gear meshed with it to rotate, so that the driven bevel gear can drive the worm wheel to rotate 90° through the worm, so that the worm wheel can drive the square clamp to flip 90°, and replace the clamping surface of the square clamp that has just participated in the clamping operation, so as to avoid using the same clamping surface to clamp the workpiece for a long time, so that different clamping surfaces can be used in replacement, so as to reduce excessive wear and stress concentration of the clamping surface, and extend the service life of the square clamp;

[0021] 2. When the first gear moves quickly to the end of the base, the first gear disengages from the first rack, causing the square clamp to stop rotating. At the same time, the dust collecting hopper will abut against the side of the U-shaped frame, so that when the U-shaped frame continues to move, it can push the C-shaped plate to move as a whole through the dust collecting hopper. At the same time, the brush installed on the cleaning belt will contact the outer surface of the square clamp. When the C-shaped plate moves, it will drive the second gear to roll on the second rack through the rotating rod, so that the second gear can drive the rotating rod to rotate through the second one-way bearing, so that the rotating rod drives the brush on the cleaning belt to move through the supporting roller, so that the brush can clean the surface of the square clamp to prevent impurities adhering to the clamping surface of the square clamp from being embedded between the workpiece and the fixture in the subsequent clamping process, affecting the accuracy and stability of the clamping; the impurities swept by the brush fall into the dust collecting hopper for discharge and collection;

[0022] 3. While the U-shaped frame drives the square clamp to move and clamp the workpiece, the guide column is driven to move in the guide groove through the limit rod and the movable plate, so that when the guide column moves to a section of the guide groove close to the slide groove, the guide column can drive the insertion rod through the movable plate to insert into the insertion hole opened at the end of the square clamp, so that the insertion rod can further limit the square clamp, thereby ensuring the stability of the square clamp during the clamping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front structural schematic diagram of a high-strength anti-fatigue fixture proposed by the present invention;

[0024] Figure 2 This is a rear view structural schematic diagram of a high-strength anti-fatigue fixture proposed by the present invention;

[0025] Figure 3 A schematic diagram of the structure of a U-shaped frame and a square clamp block of a high-strength anti-fatigue fixture proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the C-type plate structure of a high-strength anti-fatigue fixture proposed by the present invention;

[0027] Figure 5 A schematic diagram of the cleaning belt structure of a high-strength anti-fatigue fixture proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the base structure of a high-strength anti-fatigue fixture proposed by the present invention;

[0029] Figure 7 This is a schematic structural diagram of a U-shaped frame and a square clamp block of a high-strength anti-fatigue fixture proposed by the present invention in a disassembled state;

[0030] Figure 8 for Figure 3 A magnified view of the structure in the middle.

[0031] In the figure: 1. base; 2. slide groove; 3. slider; 4. U-shaped frame; 5. square clamp; 6. worm gear; 7. worm; 8. driven bevel gear; 9. driving bevel gear; 10. transmission shaft; 11. first one-way bearing; 12. first gear; 13. first rack; 14. L-shaped plate; 15. spring rod; 16. C-shaped plate; 17. support roller; 18. cleaning belt; 19. brush; 20. dust collecting bucket; 21. rotating rod; 22. second one-way bearing; 23. second gear; 24. mounting groove; 25. second rack; 26. limit rod; 27. moving plate; 28. plug rod; 29. ​​socket; 30. guide column; 31. guide groove; 32. two-way screw rod; 33. stepping motor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] See attached Figure 1 -Attached Figure 8A high-strength anti-fatigue fixture comprises a base 1, a slide groove 2 is formed on the upper surface of the base 1, two slide blocks 3 are slidably mounted on the inner wall of the slide groove 2, a U-shaped frame 4 is fixedly mounted on the upper surface of the two slide blocks 3, a square clamp 5 is rotatably mounted between the outer surfaces of the two opposite sides of the U-shaped frame 4, the four sides of the square clamp 5 are all clamping surfaces, a flipping mechanism for driving the square clamp 5 to flip is installed on the outer surface of the U-shaped frame 4, and the clamping range of the two square clamps 5 on the workpiece is between the adjacent two first racks 13 Within the spacing between the end portions, and the first gear 12 must completely cross the first rack 13, so as to ensure that the subsequent square clamp 5 is flipped 90° to achieve the flipping effect of the square clamp 5, a bidirectional screw rod 32 is rotatably installed between the inner walls at the opposite ends of the slide groove 2, and the two ends of the bidirectional screw rod 32 respectively penetrate the outer surfaces of the two sliders 3 and are threadedly connected thereto, and a stepper motor 33 is fixedly installed at the end of one end of the base 1, and the output end of the stepper motor 33 penetrates the outer surface of the base 1 and is fixedly installed with the rotation center of the bidirectional screw rod 32.

[0035] In this embodiment, the flipping mechanism includes a worm gear 6 fixedly installed at the rotation center of the square clamp block 5, a worm 7 is rotatably installed on the outer surface of the U-shaped frame 4 close to the worm gear 6, and the worm 7 is meshed with the worm gear 6. A driving component for driving the worm 7 to rotate is installed between the U-shaped frame 4 and the base 1, and the driving component includes a transmission shaft 10 rotatably installed on the outer surface of the U-shaped frame 4, a driving bevel gear 9 is fixedly installed on the top of the transmission shaft 10, and a driven bevel gear 8 is fixedly installed on one end of the worm 7, and the driving bevel gear 9 is meshed with the driven bevel gear 8. A first rack 13 is fixedly installed on the upper surface of the base 1 close to the transmission shaft 10, and a first one-way bearing 11 is installed on the outer surface of the bottom end of the transmission shaft 10. A first gear 12 that can rotate in one direction is installed on the bottom end of the transmission shaft 10 through the first one-way bearing 11, and the first gear 12 is intermittently meshed with the first rack 13.

[0036] When releasing the workpiece, the stepper motor 33 drives the bidirectional screw rod 32 to reverse, so that the two relatively arranged square clamping blocks 5 move away from each other. When the U-shaped frame 4 moves to the first rack 13, the first gear 12 installed on the U-shaped frame 4 will mesh with the first rack 13, so that the first gear 12 drives the transmission shaft 10 to rotate through the first one-way bearing 11 (when the workpiece is clamped, when the first gear 12 rolls on the first rack 13, the first one-way bearing 11 will not drive the transmission shaft 10 to rotate), so that the transmission shaft 10 drives the active bevel gear 9 to rotate, so that the active bevel gear 9 drives the driven bevel gear 8 meshing therewith to rotate, so that the driven bevel gear 8 can drive the worm wheel 6 to rotate 90° through the worm 7, so that the worm wheel 6 can drive the square clamp 5 to flip 90°, and replace the clamping surface of the square clamp 5 that has just participated in the clamping operation, avoid using the same clamping surface to clamp the workpiece for a long time, and use different clamping surfaces in replacement, thereby reducing excessive wear and stress concentration on the clamping surface and extending the service life of the square clamp 5.

[0037] In this embodiment, both ends of the base 1 are equipped with a cleaning mechanism for cleaning the surface of the square clamp 5, and the cleaning mechanism includes a plurality of L-shaped plates 14 fixedly installed at the end of the base 1, and the outer surfaces of the plurality of L-shaped plates 14 are all penetrated and fixedly installed with spring rods 15, and a C-shaped plate 16 is fixedly installed between the telescopic ends of the plurality of spring rods 15, and two support rollers 17 are rotatably installed between the upper and lower outer surfaces of the C-shaped plate 16, and the outer surfaces of the two support rollers 17 are sleeved with a cleaning belt 18, and the outer surface of the cleaning belt 18 is evenly fixedly installed with a plurality of brushes 19, one of which is connected to the support roller 17. A transmission assembly is installed between the bases 1, and the transmission assembly includes a rotating rod 21 fixedly installed at the rotation center of one of the support rollers 17, a second one-way bearing 22 is installed on the outer surface of the bottom end of the rotating rod 21, and a second gear 23 that can rotate in one direction is installed on the bottom end of the rotating rod 21 through the second one-way bearing 22. A mounting groove 24 is opened on the upper surface of the base 1, and a second rack 25 is fixedly installed on the inner wall of the mounting groove 24. The second gear 23 is meshed with the second rack 25. A dust collecting hopper 20 is fixedly installed at an angle near the bottom end of the U-shaped frame 4 on the C-shaped plate 16, and the top of the dust collecting hopper 20 is an open structure.

[0038] When the first gear 12 moves quickly to the end of the base 1, the first gear 12 disengages from the first rack 13, causing the square clamp 5 to stop rotating. At the same time, the dust collecting hopper 20 will abut against the side of the U-shaped frame 4, so that when the U-shaped frame 4 continues to move, it can push the C-shaped plate 16 to move as a whole through the dust collecting hopper 20. At the same time, the brush 19 installed on the cleaning belt 18 will contact the outer surface of the square clamp 5. When the C-shaped plate 16 moves, it will drive the second gear 23 to roll on the second rack 25 through the rotating rod 21, so that the second gear 23 can pass The second one-way bearing 22 drives the rotating rod 21 to rotate (when the second gear 23 rolls in the opposite direction on the second rack 25, the second one-way bearing 22 will not drive the rotating rod 21 to rotate), so that the rotating rod 21 drives the brush 19 on the cleaning belt 18 to move through the support roller 17, so that the brush 19 can clean the surface of the square clamp block 5, so as to prevent impurities adhered to the clamping surface of the square clamp block 5 from being embedded between the workpiece and the fixture in the subsequent clamping process, affecting the clamping accuracy and stability; the impurities swept away by the brush 19 fall into the dust collecting hopper 20 for discharge and collection.

[0039] In this embodiment, a locking mechanism is installed on the outer surface of the U-shaped frame 4 away from the worm gear 6, and the locking mechanism includes a limit rod 26 fixedly installed on the outer surface of the U-shaped frame 4, and a movable plate 27 is slidably installed on the outer surface of the limit rod 26, and an insertion rod 28 is fixedly installed on the outer surface of the movable plate 27 close to the U-shaped frame 4. The insertion rod 28 is inserted through the outer surface of the U-shaped frame 4, and four insertion holes 29 matching the insertion rod 28 are evenly penetrated in the circumferential direction of the end of the square clamp 5 close to one end of the movable plate 27. A locking assembly is installed between the movable plate 27 and the base 1, and the locking assembly includes a guide column 30 fixedly installed on the bottom end of the movable plate 27, and a guide groove 31 is opened on the upper surface of the base 1 close to the movable plate 27. The guide groove 31 is a lightning-shaped structure, and the guide column 30 is slidably installed on the inner wall of the guide groove 31.

[0040] While the U-shaped frame 4 drives the square clamp 5 to move and clamp the workpiece, the guide column 30 will be driven to move in the guide groove 31 through the limit rod 26 and the movable plate 27, so that when the guide column 30 moves to a section of the guide groove 31 close to the slide groove 2, the guide column 30 can drive the insertion rod 28 through the movable plate 27 to be inserted into the insertion hole 29 opened at the end of the square clamp 5, so that the insertion rod 28 can further limit the square clamp 5, thereby ensuring the stability of the square clamp 5 during the clamping operation.

[0041] A method for using a high-strength anti-fatigue fixture comprises the following steps:

[0042] S1: Place the workpiece to be clamped in the middle of the base 1, and drive the bidirectional screw 32 to rotate through the stepping motor 33, so that the slider 3 threadedly connected at both ends of the bidirectional screw 32 drives the U-shaped frame 4 and the square clamping block 5 to move closer to the workpiece as a whole, so that the two square clamping blocks 5 arranged opposite to each other clamp and fix the workpiece;

[0043] S2: When releasing the workpiece, the stepper motor 33 drives the bidirectional screw rod 32 to reverse, so that the two relatively arranged square clamping blocks 5 move away from each other. When the U-shaped frame 4 moves to the first rack 13, the first gear 12 installed on the U-shaped frame 4 will mesh with the first rack 13, so that the first gear 12 drives the transmission shaft 10 to rotate through the first one-way bearing 11, so that the transmission shaft 10 drives the active bevel gear 9 to rotate, so that the active bevel gear 9 drives the driven bevel gear 8 meshed with it to rotate, so that the driven bevel gear 8 can drive the worm wheel 6 to rotate 90° through the worm 7, so that the worm wheel 6 can drive the square clamping block 5 to flip 90°, and the clamping surface of the square clamping block 5 that has just participated in the clamping operation is replaced;

[0044] S3: When the first gear 12 moves quickly to the end of the base 1, the first gear 12 disengages from the first rack 13, causing the square clamp 5 to stop rotating. At the same time, the dust collecting hopper 20 will abut against the side of the U-shaped frame 4, so that when the U-shaped frame 4 continues to move, it can push the C-shaped plate 16 to move as a whole through the dust collecting hopper 20. At the same time, the brush 19 installed on the cleaning belt 18 will contact the outer surface of the square clamp 5. When the C-shaped plate 16 moves, the second gear 23 will be driven to roll on the second rack 25 through the rotating rod 21, so that the second gear 23 can drive the rotating rod 21 to rotate through the second one-way bearing 22, so that the rotating rod 21 drives the brush 19 on the cleaning belt 18 to move through the supporting roller 17, so that the brush 19 can clean the surface of the square clamp 5.

[0045] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the workpiece to be clamped is placed in the middle position of the base 1, and the bidirectional screw 32 is driven to rotate by the stepping motor 33, so that the slider 3 threadedly connected at both ends of the bidirectional screw 32 drives the U-shaped frame 4 and the square clamp block 5 as a whole to move closer to the workpiece, so that the two relatively arranged square clamp blocks 5 can achieve the effect of clamping and fixing the workpiece;

[0046] When releasing the workpiece, the stepper motor 33 drives the bidirectional screw rod 32 to reverse, so that the two relatively arranged square clamping blocks 5 move away from each other. When the U-shaped frame 4 moves to the first rack 13, the first gear 12 installed on the U-shaped frame 4 will mesh with the first rack 13, so that the first gear 12 drives the transmission shaft 10 to rotate through the first one-way bearing 11 (when the workpiece is clamped, when the first gear 12 rolls on the first rack 13, the first one-way bearing 11 will not drive the transmission shaft 10 to rotate), so that the transmission shaft 10 drives the active bevel gear 9 to rotate, so that the active bevel gear 9 drives the driven bevel gear 8 meshing therewith to rotate, so that the driven bevel gear 8 can drive the worm wheel 6 to rotate 90° through the worm 7, so that the worm wheel 6 can drive the square clamp block 5 to flip 90°, and replace the clamping surface of the square clamp block 5 that has just participated in the clamping operation, so as to avoid using the same clamping surface to clamp the workpiece for a long time, so that different clamping surfaces can be replaced and used, so as to reduce excessive wear and stress concentration of the clamping surface, and extend the service life of the square clamp block 5;

[0047] When the first gear 12 moves quickly to the end of the base 1, the first gear 12 disengages from the first rack 13, causing the square clamp 5 to stop rotating. At the same time, the dust collecting hopper 20 will abut against the side of the U-shaped frame 4, so that when the U-shaped frame 4 continues to move, it can push the C-shaped plate 16 to move as a whole through the dust collecting hopper 20. At the same time, the brush 19 installed on the cleaning belt 18 will contact the outer surface of the square clamp 5. When the C-shaped plate 16 moves, it will drive the second gear 23 to roll on the second rack 25 through the rotating rod 21, so that the second gear 23 can pass The second one-way bearing 22 drives the rotating rod 21 to rotate (when the second gear 23 rolls in the opposite direction on the second rack 25, the second one-way bearing 22 will not drive the rotating rod 21 to rotate), so that the rotating rod 21 drives the brush 19 on the cleaning belt 18 to move through the support roller 17, so that the brush 19 can clean the surface of the square clamp block 5, so as to prevent impurities adhered to the clamping surface of the square clamp block 5 from being embedded between the workpiece and the fixture in the subsequent clamping process, affecting the clamping accuracy and stability; the impurities swept away by the brush 19 fall into the dust collecting hopper 20 for discharge and collection.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-strength anti-fatigue fixture, comprising a base (1), characterized in that: A slide groove (2) is provided through the upper surface of the base (1), and two sliders (3) are slidably mounted on the inner wall of the slide groove (2). A U-shaped frame (4) is fixedly mounted on the upper surface of the two sliders (3). A square clamp block (5) is rotatably mounted between the outer surfaces of the two opposite sides of the U-shaped frame (4), and the four side surfaces of the square clamp block (5) are all clamping surfaces. A turning mechanism for driving the square clamp block (5) to turn over is installed on the outer surface of the U-shaped frame (4).

2. A high-strength anti-fatigue fixture according to claim 1, characterized in that: The turning mechanism comprises a worm wheel (6) fixedly mounted at the rotation center of the square clamp block (5); a worm (7) is rotatably mounted on the outer surface of the U-shaped frame (4) on one side close to the worm wheel (6); the worm (7) is meshed with the worm wheel (6); and a driving assembly for driving the worm (7) to rotate is installed between the U-shaped frame (4) and the base (1).

3. A high-strength anti-fatigue fixture according to claim 2, characterized in that: The driving assembly comprises a transmission shaft (10) rotatably mounted on the outer surface of the U-shaped frame (4); a driving bevel gear (9) is fixedly mounted on the top of the transmission shaft (10); a driven bevel gear (8) is fixedly mounted on one end of the worm (7); the driving bevel gear (9) is meshed with the driven bevel gear (8); a first rack (13) is fixedly mounted on the upper surface of the base (1) close to the transmission shaft (10); a first one-way bearing (11) is mounted on the outer surface of the bottom end of the transmission shaft (10); a first gear (12) rotatable in one direction is mounted on the bottom end of the transmission shaft (10) through the first one-way bearing (11); the first gear (12) is intermittently meshed with the first rack (13).

4. A high-strength anti-fatigue fixture according to claim 1, characterized in that: Both ends of the base (1) are provided with cleaning mechanisms for cleaning the surface of the square clamping block (5), the cleaning mechanisms comprising a plurality of L-shaped plates (14) fixedly mounted on the ends of the base (1), the outer surfaces of the plurality of L-shaped plates (14) being penetrated and fixedly mounted with spring rods (15), a C-shaped plate (16) being fixedly mounted between the telescopic ends of the plurality of spring rods (15), two supporting rollers (17) being rotatably mounted between the upper and lower outer surfaces of the C-shaped plate (16), the outer surfaces of the two supporting rollers (17) being sleeved with cleaning belts (18), the outer surfaces of the cleaning belts (18) being evenly fixedly mounted with a plurality of brushes (19), and a transmission assembly being mounted between one of the supporting rollers (17) and the base (1).

5. A high-strength anti-fatigue fixture according to claim 4, characterized in that: The transmission assembly comprises a rotating rod (21) fixedly mounted at the rotation center of one of the supporting rollers (17); a second one-way bearing (22) is mounted on the outer surface of the bottom end of the rotating rod (21); a second gear (23) rotatable in one direction is mounted on the bottom end of the rotating rod (21) through the second one-way bearing (22); a mounting groove (24) is formed on the upper surface of the base (1); a second rack (25) is fixedly mounted on the inner wall of the mounting groove (24); and the second gear (23) is meshed with the second rack (25).

6. A high-strength anti-fatigue fixture according to claim 4, characterized in that: A dust collecting hopper (20) is fixedly and obliquely mounted on the bottom end of the C-shaped plate (16) close to the U-shaped frame (4); the top of the dust collecting hopper (20) is an open structure.

7. The high-strength anti-fatigue fixture according to claim 1, characterized in that: A locking mechanism is installed on the outer surface of the U-shaped frame (4) away from the worm gear (6), and the locking mechanism includes a limit rod (26) fixedly installed on the outer surface of the U-shaped frame (4), a movable plate (27) is slidably installed through the outer surface of the limit rod (26), an insertion rod (28) is fixedly installed on the outer surface of the movable plate (27) close to the U-shaped frame (4), and the insertion rod (28) is inserted through the outer surface of the U-shaped frame (4), and four insertion holes (29) matching the insertion rod (28) are evenly opened in the circumferential direction of the end of the square clamping block (5) close to one end of the movable plate (27), and a locking assembly is installed between the movable plate (27) and the base (1).

8. The high-strength anti-fatigue fixture according to claim 7, characterized in that: The locking assembly comprises a guide column (30) fixedly mounted on the bottom end of the movable plate (27); a guide groove (31) is provided on the upper surface of the base (1) close to the movable plate (27); the guide groove (31) is a lightning-shaped structure; the guide column (30) is slidably mounted on the inner wall of the guide groove (31).

9. The high-strength anti-fatigue fixture according to claim 1, characterized in that: A bidirectional screw rod (32) is rotatably mounted between the inner walls at opposite ends of the slide groove (2), and the two ends of the bidirectional screw rod (32) respectively penetrate the outer surfaces of the two sliders (3) and are threadedly connected thereto. A stepper motor (33) is fixedly mounted at the end of one end of the base (1), and the output end of the stepper motor (33) penetrates the outer surface of the base (1) and is fixedly mounted to the rotation center of the bidirectional screw rod (32).

10. A method for using a high-strength anti-fatigue fixture, characterized in that: The high-strength anti-fatigue fixture according to any one of claims 1 to 9 is used, comprising the following steps: S1: placing the workpiece to be clamped in the middle of the base (1), and driving the bidirectional screw (32) to rotate by means of a stepping motor (33), so that the slider (3) threadedly connected at both ends of the bidirectional screw (32) drives the U-shaped frame (4) and the square clamping block (5) as a whole to move closer to the workpiece, so that the two square clamping blocks (5) arranged opposite to each other clamp and fix the workpiece; S2: When the workpiece is released, the stepper motor (33) drives the bidirectional screw rod (32) to reverse, so that the two square clamping blocks (5) arranged opposite to each other move away from each other. When the U-shaped frame (4) moves to the first rack (13), the first gear (12) installed on the U-shaped frame (4) will mesh with the first rack (13), so that the first gear (12) drives the transmission shaft (10) to rotate through the first one-way bearing (11), so that the transmission shaft (10) drives the active bevel gear (9) to rotate, so that the active bevel gear (9) drives the driven bevel gear (8) meshed with it to rotate, so that the driven bevel gear (8) can drive the worm wheel (6) to rotate 90 degrees through the worm (7), so that the worm wheel (6) can drive the square clamping block (5) to flip 90 degrees, and the clamping surface of the square clamping block (5) that has just participated in the clamping operation is replaced; S3: When the first gear (12) moves quickly to the end of the base (1), the first gear (12) is disengaged from the first rack (13), so that the square clamp (5) stops rotating. At the same time, the dust collecting bucket (20) abuts against the side of the U-shaped frame (4), so that when the U-shaped frame (4) continues to move, it can push the C-shaped plate (16) to move as a whole through the dust collecting bucket (20). At the same time, the brush (19) installed on the cleaning belt (18) contacts the outer surface of the square clamp (5). When the C-shaped plate (16) moves, the second gear (23) is driven to roll on the second rack (25) through the rotating rod (21), so that the second gear (23) can drive the rotating rod (21) to rotate through the second one-way bearing (22), so that the rotating rod (21) drives the brush (19) on the cleaning belt (18) to move through the supporting roller (17), so that the brush (19) can clean the surface of the square clamp (5).

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