Double-pushing Fixture and Method for One-time Forming of Symmetrical Parts by Double-pushing

Abstract

The present invention discloses a double-pushing fixture and its method for one-time forming of symmetrical parts in the technical field of double-pushing fixtures, including a base. A transverse first sliding groove and a longitudinal second sliding groove are provided at the middle position of the surface of the base; before processing the symmetrical parts, the first clamping plate and the second clamping plate can quickly clamp the workpiece, which is beneficial to the disassembly and replacement of the workpiece before and after processing, simplifies the replacement operation, reduces the time wasted during disassembly and replacement, ensures the processing process, and after the clamping is stable, the support block will support the workpiece, which is beneficial to keeping the workpiece stable after being clamped and fixed, ensuring subsequent normal processing. Subsequently, the flipping plate will drive the workpiece to flip while being clamped by the first clamping plate, which is beneficial to keeping the workpiece in a clamped state during the process of processing the two side surfaces of the workpiece, ensuring the fixation of the workpiece position, and thus ensuring the symmetry of the processing of the two sides of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of double-push jigs, and particularly to a double-push jig for one-time forming of symmetric parts by double-pushing and its method. Background Technique

[0002] In the mechanical manufacturing process, a device used to fix the processing object to make it occupy the correct position to receive construction or inspection is also called a jig. Generally speaking, any device used to quickly, conveniently and safely install workpieces in any process of the technological process can be called a jig. For example, welding jigs, inspection jigs, assembly jigs, machine tool jigs, etc. Among them, machine tool jigs are the most common and are often simply referred to as jigs.

[0003] In the prior art, when processing symmetric parts that need to be processed on both sides, usually after one side is processed, it is disassembled, turned over and clamped, and then processed again. The disassembly process is cumbersome, time-consuming, increases the workload of workers, reduces the processing efficiency, and when turning over and clamping, it cannot ensure that the clamping positions of the two times are completely corresponding, resulting in misalignment on both sides of the processed symmetric parts, affecting the use of the processed symmetric parts and reducing the qualified rate of the produced products. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-push jig for one-time forming of symmetric parts by double-pushing and its method that can automatically flip during the processing process to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A double-push jig for one-time forming of symmetric parts by double-pushing, including a base. A horizontal first chute and a vertical second chute are provided at the middle position of the surface of the base. The first chute and the second chute are arranged in a cross shape, and the depth of the second chute is greater than that of the first chute. Two first clamping plates are slidably connected in the first chute, and the two first clamping plates are respectively located on both sides of the second chute. Two second clamping plates are slidably connected in the second chute, and the two second clamping plates are respectively located on both sides of the first chute. A driving mechanism is provided at the bottom of the first clamping plate and the second clamping plate. The driving mechanism can drive the first clamping plate and the second clamping plate to quickly clamp and open. A flipping mechanism is provided between the two first clamping plates. The flipping mechanism can flip the symmetric part to the other side after one side surface of the symmetric part is processed. A supporting mechanism is provided on the surface of the base. The supporting mechanism can support the symmetric workpiece when the second clamping plate clamps the symmetric part;

[0006] As a further solution of the present invention, the driving mechanism includes two first racks and two second racks. The two first racks are respectively fixedly connected to the surfaces of the two first clamping plates on the side close to each other, and both of the two first racks are located in the first chute. Both of the two first racks penetrate through the first clamping plate. The bottom of the inner wall of the second chute is rotatably connected to a rotating shaft. The upper end of the rotating shaft is fixedly connected to a first gear. The first gear is located in the first chute. Both of the two first racks are engaged with the first gear. The surface of the rotating shaft corresponding to the second chute is rotatably connected to a second gear. The surface of the base is fixedly connected with a first cylinder and a second cylinder. The first cylinder is fixedly connected to the end of one of the first racks. The two second racks are respectively fixedly connected to the surfaces of the two second clamping plates on the side close to each other, and both of the two second racks are located in the second chute. Both of the two second racks penetrate through the second clamping plate. Both of the two second racks are engaged with the second gear. The second cylinder is fixedly connected to the end of one of the second racks;

[0007] As a further solution of the present invention, the flipping mechanism includes two flipping plates. Both of the two flipping plates are rotatably connected to the surfaces of the two first clamping plates. A flipping motor is fixedly connected to the surface of one of the first clamping plates. The output shaft of the flipping motor is fixedly connected to the flipping plate. The first clamping plate is telescopic, and a guiding block is fixedly connected to the bottom of the surface of the first clamping plate. The surface of the guiding block close to the flipping plate is arc-shaped. The guiding block can guide the symmetrical part to flip. Triangular pressing blocks are fixedly connected to the surfaces of the first clamping plate close to the two second clamping plates. A telescopic pressing rod is fixedly connected to the surface of the second clamping plate. The pressing rod extends to the side of the first clamping plate away from the second clamping plate. The movement of the first clamping plate can act on the pressing rod, and the pressing rod can act on the pressing block;

[0008] As a further solution of the present invention, the supporting mechanism includes four grooves, which are all opened on the surface of the base, the first slide groove and the second slide groove separate the four grooves, and a plurality of retractable supporting blocks are arranged in the grooves, the retractable ends of the supporting blocks are fixedly connected to the surface of the second clamping plate, the supporting blocks close to the first clamping plate are fixedly connected to the first clamping plate, and two trapezoidal pushing blocks are elastically slidably connected in the grooves, the two pushing blocks are respectively located on both sides of the grooves, the pushing blocks can be moved to the bottom of the supporting blocks, and the upper end of the pushing blocks away from the first clamping plate extends to the second clamping plate position, the surfaces of the two pushing blocks are staggered with a plurality of makeshift grooves, and the surface of the pushing block close to the first clamping plate is fixedly connected with a pull rod. The cam is connected with the push plate at the end portion thereof, and the push plate slides on the inner wall surface of the groove, and the push block away from the first clamping plate can act on the push plate, and the surface of the groove is elastically slidably connected to the limit rod, and the limit rod can limit the two push blocks, and the surface of the limit rod is slidably connected to the sliding rod, and the surface of the second clamping plate is provided with a third sliding groove, and one side of the third sliding groove is an inclined surface, and the sliding rod can move into the third sliding groove, and the sliding rod moves to one side under the action of the third sliding groove when it moves into the third sliding groove, and the upper and lower side surfaces of the flip plate are fixedly connected with elastically retractable limit strips, and one side surface of the limit strip is an inclined surface;

[0009] As a further solution of the present invention, the surface of the first clamping plate is elastically slidably connected to the limit block, the middle positions of the surfaces of the limit bars on the upper and lower sides are provided with limit grooves, the surface of the limit block is provided with a through opening, one side of the through opening is an inclined surface, the surface of the first clamping plate away from the limit bar is elastically slidably connected to a sliding plate, the surface of the sliding plate is fixedly connected to an action plate, the action plate extends to the through opening position and the bottom of the action plate is an inclined surface, the action plate can act on the limit block, the two sides of the surface of the sliding plate are fixedly connected to trapezoidal blocks, and the extrusion rod can act on the trapezoidal blocks;

[0010] As a further solution of the present invention, the surfaces of the plurality of support blocks are fixedly connected with fixing rods, the surfaces of the fixing rods are provided with through grooves, and the adjacent support blocks slide in the through grooves on the same side;

[0011] As a further solution of the present invention, a retractable shielding plate is fixedly connected to the four grooves on the surface of the base, the first slide slot and the second slide slot, and the edge of the shielding plate above the support block can be retracted and extended as the support block rises;

[0012] The method of using the double-push fixture for double-push one-time molding of symmetrical parts, the specific steps of this method are as follows:

[0013] Step 1: When clamping the symmetric part, the driving mechanism can act on the first clamping plate and the second clamping plate to open and clamp the symmetric part.

[0014] Step 2: After clamping and fixing, machining is carried out. After the machining is completed, the flipping mechanism can flip the symmetric part to machine the other side.

[0015] Step 3: During the machining process, when the second clamping plate clamps the symmetric part, the supporting mechanism will support the symmetric part.

[0016] Step 4: Subsequently, after both sides of the symmetric part are machined, a new workpiece is replaced for machining.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. Before machining the symmetric part, the first clamping plate and the second clamping plate of the present invention can quickly clamp the workpiece, which is beneficial to the disassembly and replacement of the workpiece before and after machining, simplifies the replacement operation, reduces the time wasted during disassembly and replacement, ensures the machining process, and after the clamping is stable, the support block will support the workpiece, which is beneficial to keeping the workpiece stable after being clamped and fixed, ensuring subsequent normal machining, and avoiding that when machining the edge of the workpiece during the machining process, a large downward pressure will cause the flipping plate to rotate, resulting in workpiece damage and affecting normal machining. Subsequently, the flipping plate will drive the workpiece to flip while being clamped by the first clamping plate, which is beneficial to keeping the workpiece in a clamped state during the process of machining both side surfaces, ensuring the fixation of the workpiece position, and thus ensuring the symmetry of the machining of both sides of the workpiece.

[0019] 2. When the workpiece needs to be flipped, the extrusion rod will act on the trapezoidal block, and the trapezoidal block, the sliding plate and the acting plate will move downward together. The acting plate will move into the through hole, and the limiting block will move out of the limiting groove under the extrusion of the acting plate to release the limitation on the flipping plate. Subsequently, the flipping plate drives the workpiece to flip, the extrusion rod will cross the trapezoidal block, and the limiting block will fit with the surface of the flipping plate. Subsequently, when the flipping plate flips the workpiece to the other side, the limiting block will move into the limiting groove in the middle of the flipped limiting strip, which is beneficial to ensuring that the flipping plate can completely flip the workpiece to the horizontal position. After flipping, the limiting block will re-limit the flipping plate to prevent the flipping plate from moving again, affecting subsequent clamping and machining, and thus affecting the quality of the machined product.

[0020] 3. According to the present invention, when the first clamping plate moves to both sides, the clamping plate will drive the support block close to one side of the first clamping plate to move, and the support blocks will all move in the through groove. When the distance between two adjacent support blocks reaches the maximum distance of the through groove, the fixed rod will drive the adjacent support blocks to move, which is beneficial to make the distance between the support blocks within a certain range, ensuring the support for the workpiece and avoiding the situation in which the support block cannot move with the first supporting plate during the movement of the first clamping plate, thereby causing the bottom part of the workpiece to be unable to be supported by the support block, which may cause the workpiece to be deformed or damaged during processing, affecting the processing progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a flow chart of the method of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention after the shielding plate is hidden;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle;

[0025] Figure 5 for Figure 3 Schematic diagram of the structure at B in the middle;

[0026] Figure 6 It is a structural schematic diagram of the base and the driving mechanism in the present invention;

[0027] Figure 7 for Figure 6 Schematic diagram of the structure at C in the middle;

[0028] Figure 8 for Figure 6 Schematic diagram of the structure at D in the middle;

[0029] Figure 9 It is a structural schematic diagram of the connection relationship between a single first clamping plate and a single second clamping plate in the present invention;

[0030] Figure 10 It is a schematic diagram of the structure after the first gear and the second gear are exploded in the present invention;

[0031] Figure 11 It is a schematic diagram of the structure of a push block in a single groove in the present invention;

[0032] Figure 12 for Figure 11 Schematic diagram of the structure at E in the middle;

[0033] Figure 13 It is a structural schematic diagram of a bottom view of the cut-away base in the present invention;

[0034] Figure 14 For Figure 13 the structural schematic diagram at position F in

[0035] Figure 15 For Figure 13 the structural schematic diagram at position G in

[0036] Figure 16 This is the structural schematic diagram of the connection relationship between the first clamping plate and the sliding rod in the present invention.

[0037] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0038] Base 1, first chute 2, second chute 3, first clamping plate 4, second clamping plate 5, first rack 6, second rack 7, rotating shaft 8, first gear 9, second gear 10, first cylinder 11, second cylinder 12, turning plate 13, turning motor 14, guiding block 15, pressing block 16, pressing rod 17, groove 18, supporting block 19, pushing block 20, relief groove 21, pulling rope 22, pushing plate 23, limiting rod 24, sliding rod 25, third chute 26, limiting strip 27, limiting block 28, limiting groove 29, through opening 30, sliding plate 31, acting plate 32, trapezoidal block 33, fixing rod 34, through slot 35, shielding plate 36. Specific embodiments

[0039] Please refer to Figures 1 - 16 , the present invention provides a technical solution: a double-pushing fixture for double-pushing and one-time forming of symmetrical parts, including a base 1. A horizontal first chute 2 and a vertical second chute 3 are provided at the middle position of the surface of the base 1. The first chute 2 and the second chute 3 are arranged in a cross shape, and the depth of the second chute 3 is greater than that of the first chute 2. Two first clamping plates 4 are slidably connected in the first chute 2, and the two first clamping plates 4 are respectively located on both sides of the second chute 3. Two second clamping plates 5 are slidably connected in the second chute 3, and the two second clamping plates 5 are respectively located on both sides of the first chute 2. A driving mechanism is provided at the bottom of the first clamping plate 4 and the second clamping plate 5. The driving mechanism can drive the first clamping plate 4 and the second clamping plate 5 to quickly clamp and open. A turning mechanism is provided between the two first clamping plates 4. The turning mechanism can turn the symmetrical part to the other side after the processing of one side surface of the symmetrical part is completed. A supporting mechanism is provided on the surface of the base 1. The supporting mechanism can support the symmetrical workpiece when the second clamping plate 5 clamps the symmetrical part;

[0040] The driving mechanism includes two first racks 6 and two second racks 7. The two first racks 6 are respectively fixedly connected to the surfaces of the two first clamping plates 4 on the side close to each other, and the two first racks 6 are both located in the first sliding groove 2. The two first racks 6 penetrate through the first clamping plates 4. The bottom of the inner wall of the second sliding groove 3 is rotatably connected to a rotating shaft 8. The upper end of the rotating shaft 8 is fixedly connected to a first gear 9. The first gear 9 is located in the first sliding groove 2. The two first racks 6 are both meshed with the first gear 9. The surface of the rotating shaft 8 corresponding to the position of the second sliding groove 3 is rotatably connected to a second gear 10. The surface of the base 1 is fixedly connected to a first cylinder 11 and a second cylinder 12. The first cylinder 11 is fixedly connected to the end of one of the first racks 6. The two second racks 7 are respectively fixedly connected to the surfaces of the two second clamping plates 5 on the side close to each other, and the two second racks 7 are both located in the second sliding groove 3. The two second racks 7 penetrate through the second clamping plates 5. The two second racks 7 are both meshed with the second gear 10. The second cylinder 12 is fixedly connected to the end of one of the second racks 7;

[0041] The flipping mechanism includes two flipping plates 13. The two flipping plates 13 are both rotatably connected to the surfaces of the two first clamping plates 4. A flipping motor 14 is fixedly connected to the surface of one of the first clamping plates 4. The output shaft of the flipping motor 14 is fixedly connected to the flipping plate 13. The first clamping plate 4 is telescopic, and a guiding block 15 is fixedly connected to the bottom of the surface of the first clamping plate 4. The surface of the guiding block 15 close to the flipping plate 13 is arc-shaped. The guiding block 15 can guide the symmetric part to flip. Triangular pressing blocks 16 are fixedly connected to the surfaces of the first clamping plates 4 close to the two second clamping plates 5. A telescopic pressing rod 17 is fixedly connected to the surface of the second clamping plate 5. The pressing rod 17 extends to the side of the first clamping plate 4 away from the second clamping plate 5. The movement of the first clamping plate 4 can act on the pressing rod 17, and the pressing rod 17 can act on the pressing block 16;

[0042] The support mechanism includes four grooves 18, all of which are opened on the surface of the base 1. The first sliding groove 2 and the second sliding groove 3 separate the four grooves 18. A plurality of telescopic support blocks 19 are arranged in the grooves 18. The telescopic ends of the support blocks 19 are fixedly connected to the surface of the second clamping plate 5. The support blocks 19 near the first clamping plate 4 are fixedly connected to the first clamping plate 4. Two trapezoidal pushing blocks 20 are elastically and slidably connected in each of the grooves 18. The two pushing blocks 20 are respectively located on both sides inside the grooves 18. The pushing blocks 20 can move to the bottom of the support blocks 19. The upper ends of the pushing blocks 20 on the side away from the first clamping plate 4 extend to the position of the second clamping plate 5. A plurality of relief grooves 21 are staggeredly arranged on the surfaces of the two pushing blocks 20. A pulling rope 22 is fixedly connected to the surface of the pushing block 20 near the first clamping plate 4. After extending towards the side close to the first clamping plate 4, the pulling rope 22 extends to the position of the pushing block 20 on the side away from the first clamping plate 4. A push plate 23 is fixedly connected to the end of the pulling rope 22. The push plate 23 slides on the inner wall surface of the groove 18. The pushing block 20 on the side away from the first clamping plate 4 can act on the push plate 23. A limiting rod 24 is elastically and slidably connected to the surface of the groove 18. The limiting rod 24 can limit the two pushing blocks 20. A sliding rod 25 is slidably connected to the surface of the limiting rod 24. A third sliding groove 26 is opened on the surface of the second clamping plate 5. One side of the third sliding groove 26 is an inclined surface. The sliding rod 25 can move into the third sliding groove 26. When the sliding rod 25 moves into the third sliding groove 26, it will move to one side under the action of the third sliding groove 26. Elastic telescopic limiting strips 27 are fixedly connected to the upper and lower surfaces of the flip plate 13. One side surface of the limiting strip 27 is an inclined surface;

[0043] Before processing the symmetrical part, first fix the base 1 on the processing table, then move the symmetrical part between the two turning plates 13. Subsequently, the first cylinder 11 is activated to drive a first rack 6 to move. The first rack 6 will drive another first rack 6 to move through the first gear 9. The two first clamping plates 4 will gradually approach, and the turning plates 13 will clamp the workpiece. Then, the second cylinder 12 will drive the second rack 7 to drive the two second clamping plates 5 to move closer to the workpiece through the second gear 10. The support block 19 will contract under the action of the second clamping plate 5. The first clamping plate 4 and the second clamping plate 5 can quickly clamp the workpiece, which is beneficial to the disassembly and replacement of the workpiece before and after processing, simplifies the replacement operation, reduces the time wasted during disassembly and replacement, and ensures the processing progress. Subsequently, when the second clamping plate 5 clamps the workpiece, the pressing rod 17 will gradually move above the extrusion block 16 and above the first clamping plate 4, so that the extrusion block 16 and the first clamping plate 4 can remain stable, avoiding the movement of the first clamping plate 4 during processing and affecting the processing of the workpiece. Subsequently, when the second clamping plate 5 clamps the workpiece, the workpiece will squeeze the sliding rod 25. The sliding rod 25 will move into the third chute 26, and the sliding rod 25 will drive the limiting rod 24 to move to one side under the action of the third chute 26. The limiting rod 24 will release the limit on the two pushing blocks 20. The two pushing blocks 20 will move into the groove 18. The two pushing blocks 20 will act on both sides of the support block 19. The support block 19 will move upward to support the bottom of the workpiece, which is beneficial to keeping the workpiece stable after being clamped and fixed, ensuring subsequent normal processing, and avoiding damage to the workpiece caused by the rotation of the turning plate 13 due to a large downward pressure when processing the edge of the workpiece during processing, thus affecting normal processing. The limiting strip 27 can prevent the workpiece from detaching from the turning plate 13 under the action of the support block 19 on the one hand, and on the other hand, the limiting strip 27 can ensure the horizontality of the workpiece when the workpiece fits with the surface of the limiting strip 27. When the distance between the two pushing blocks 20 is small, the two pushing blocks 20 can be combined together through the misaligned relief grooves 21. Subsequently, when one side of the workpiece is processed and the other side needs to be processed, the second cylinder 12 will drive the second clamping plate 5 to release the clamping of the workpiece through the second rack 7 and the second gear 10. The second clamping plate 5 will drive the pushing block 20 on the side away from the first clamping plate 4 to move together. When the pushing block 20 moves to one side of the groove 18, the pushing block 20 will squeeze and cross the limiting rod 24, and the pushing block 20 on the side away from the first clamping plate 4 will drive the pulling rope 22 to move. The pulling rope 22 will pull the pushing block 20 on the side close to the first clamping plate 4 to the other side. Both pushing blocks 20 will cross the limiting rod 24. The support block 19 will move downward again into the groove 18. The limiting rod 24 will re-limit the two pushing blocks 20. The sliding rod 25 will return to its original position. Then, the turning motor 14 will drive the turning plate 13 to rotate, and the turning plate 13 will drive the workpiece to turn.During the rotation of the workpiece, the edge of the workpiece will contact the guiding block 15. The guiding block 15 can ensure the smooth flipping of the workpiece, preventing the edge of the workpiece from being stuck by the base 1. Subsequently, as the workpiece continues to rotate, the first clamping plate 4 will extend under the pushing of the workpiece. After the workpiece is flipped, the second clamping plate 5 will clamp the workpiece again. This is beneficial for ensuring that the workpiece remains clamped during the process of machining both side surfaces, guaranteeing the fixation of the workpiece position, thereby ensuring the symmetry of the machining of both sides of the workpiece. It avoids the need to disassemble and flip the workpiece after one side of the workpiece is machined. On the one hand, it wastes time and reduces the machining efficiency. On the other hand, disassembling and clamping again will result in different clamping positions for the two times, thus causing misalignment in the machining of both sides of the workpiece and affecting the quality of the machined workpiece.

[0044] During the flipping process of the workpiece, it cannot be guaranteed that the workpiece just flips to the horizontal position, thus affecting subsequent machining. As a further solution of the present invention, a limiting block 28 is elastically slidably connected to the surface of the first clamping plate 4. Limiting grooves 29 are opened at the middle positions of the surfaces of the upper and lower limiting strips 27. A through opening 30 is opened on the surface of the limiting block 28. One side of the through opening 30 is a slope. A sliding plate 31 is elastically slidably connected to the surface of the first clamping plate 4 on the side away from the limiting strip 27. A acting plate 32 is fixedly connected to the surface of the sliding plate 31. The acting plate 32 extends to the position of the through opening 30 and the bottom of the acting plate 32 is a slope. The acting plate 32 can act on the limiting block 28. Trapezoidal blocks 33 are fixedly connected to both sides of the surface of the sliding plate 31. The extrusion rod 17 can act on the trapezoidal blocks 33; when the workpiece needs to be flipped, the second clamping plate 5 will move to both sides, and the extrusion rod 17 will move along with it. When the extrusion rod 17 moves to the position of the trapezoidal blocks 33, the extrusion rod 17 will act on the trapezoidal blocks 33. The trapezoidal blocks 33, the sliding plate 31 and the acting plate 32 will move downward together. The acting plate 32 will move into the through opening 30. The limiting block 28 will be pushed out of the limiting groove 29 under the extrusion of the acting plate 32, releasing the limit on the flipping plate 13. Subsequently, the flipping plate 13 drives the workpiece to flip. The extrusion rod 17 will pass over the trapezoidal blocks 33. The limiting block 28 will fit with the surface of the flipping plate 13. Then when the flipping plate 13 flips the workpiece to the other side, the limiting block 28 will move into the limiting groove 29 in the middle of the flipped limiting strip 27, which is beneficial for ensuring that the flipping plate 13 can completely flip the workpiece to the horizontal position. After flipping, the limiting block 28 will re-limit the flipping plate 13, preventing the flipping plate 13 from moving again and affecting subsequent clamping and machining, thus affecting the quality of the machined product.

[0045] When the first clamping plate 4 needs to clamp a longer workpiece, the support blocks 19 cannot provide uniform support force for each part of the workpiece. As a further solution of the present invention, fixing rods 34 are fixedly connected to the surfaces of multiple support blocks 19, through grooves 35 are formed on the surfaces of the fixing rods 34, and adjacent support blocks 19 all slide in the through grooves 35 on the same side; when the first clamping plate 4 moves to both sides, the clamping plate will drive the support blocks 19 on the side close to the first clamping plate 4 to move, and the support blocks 19 will all move in the through grooves 35. When the distance between two adjacent support blocks 19 reaches the maximum distance of the through grooves 35, the fixing rods 34 will drive the adjacent support blocks 19 to move, which is beneficial to keep the distance between the support blocks 19 within a certain range, ensure the support for the workpiece, and avoid that during the movement of the first clamping plate 4, the support blocks 19 cannot move together with the first clamping plate, resulting in the bottom part of the workpiece not being supported by the support blocks 19, which may cause deformation or damage to the workpiece during processing and affect the processing process.

[0046] During the processing, debris will fly out, affecting the meshing between the teeth and the movement of the pushing block 20. As a further solution of the present invention, retractable shielding plates 36 are fixedly connected to the surface of the base 1 corresponding to the positions of the four grooves 18, the first sliding groove 2 and the second sliding groove 3. The edge of the shielding plate 36 above the support block 19 can stretch and contract as the support block 19 rises; during the process of clamping the workpiece, the shielding plate 36 can stretch and contract to change its shape as the first clamping plate 4 and the second clamping plate 5 move, blocking the debris generated during processing, avoiding the debris from affecting the meshing between the teeth, and the shielding can stretch and contract as the support block 19 moves up, avoiding the debris from entering the groove 18 through the gap between the support blocks 19, thus affecting the movement of the pushing block 20.

[0047] The using method of the double-pushing fixture for double-pushing one-time forming of symmetric parts is as follows:

[0048] Step 1: When clamping the symmetric part, the driving mechanism can act on the first clamping plate 4 and the second clamping plate 5 to open and clamp the symmetric part.

[0049] Step 2: After clamping and fixing, processing is carried out. After the processing is completed, the flipping mechanism can flip the symmetric part to process the other side.

[0050] Step 3: During the processing, when the second clamping plate 5 clamps the symmetric part, the support mechanism will support the symmetric part.

[0051] Step 4: Subsequently, after both sides of the symmetric part are processed, a new workpiece is replaced for processing.

Claims

1. Double-pushing fixture for one-time forming of symmetrical parts, including a base, characterized in that: A transverse first chute and a longitudinal second chute are provided at the middle position of the surface of the base. The first chute and the second chute are arranged in a cross shape, and the depth of the second chute is greater than that of the first chute. Two first clamping plates are slidably connected in the first chute, and the two first clamping plates are respectively located on both sides of the second chute. Two second clamping plates are slidably connected in the second chute, and the two second clamping plates are respectively located on both sides of the first chute. A driving mechanism is provided at the bottom of the first clamping plate and the second clamping plate, and the driving mechanism can drive the first clamping plate and the second clamping plate to quickly clamp and open. A turning mechanism is provided between the two first clamping plates, and the turning mechanism can turn the symmetric part to the other side after the processing of one side surface of the symmetric part is completed. A supporting mechanism is provided on the surface of the base, and the supporting mechanism can support the symmetric workpiece when the second clamping plate clamps the symmetric part; The turning mechanism includes two turning plates, and the two turning plates are both rotatably connected to the surfaces of the two first clamping plates. A turning motor is fixedly connected to the surface of one of the first clamping plates, and the output shaft of the turning motor is fixedly connected to the turning plate. The first clamping plate is telescopic, and a guiding block is fixedly connected to the bottom surface of the first clamping plate. The surface of the guiding block close to the turning plate is arc-shaped, and the guiding block can guide the symmetric part to turn. Triangular pressing blocks are fixedly connected to the surfaces of the first clamping plate close to the two second clamping plates. A telescopic pressing rod is fixedly connected to the surface of the second clamping plate, and the pressing rod extends to the side of the first clamping plate away from the second clamping plate. The movement of the first clamping plate can act on the pressing rod, and the pressing rod can act on the pressing block; The supporting mechanism includes four grooves, all of which are formed on the surface of the base. The first chute and the second chute separate the four grooves. A plurality of telescopic supporting blocks are arranged in the grooves. The telescopic ends of the supporting blocks are fixedly connected to the surface of the second clamping plate. The supporting blocks close to the first clamping plate are fixedly connected to the first clamping plate. Two trapezoidal pushing blocks are elastically and slidably connected in each groove. The two pushing blocks are respectively located on both sides inside the groove. The pushing blocks can move to the bottom of the supporting blocks. The upper ends of the pushing blocks far from the first clamping plate extend to the position of the second clamping plate. A plurality of relief grooves are staggered on the surfaces of the two pushing blocks. A pulling rope is fixedly connected to the surface of the pushing block close to the first clamping plate. The pulling rope extends toward the first clamping plate and then extends to the position of the pushing block far from the first clamping plate. The end of the pulling rope is fixedly connected to a push plate. The push plate slides on the inner wall surface of the groove. The pushing block far from the first clamping plate can act on the push plate. A limiting rod is elastically and slidably connected to the surface of the groove. The limiting rod can limit the two pushing blocks. A sliding rod is slidably connected to the surface of the limiting rod. A third chute is formed on the surface of the second clamping plate. One side of the third chute is an inclined surface. The sliding rod can move into the third chute. When the sliding rod moves into the third chute, it will move to one side under the action of the third chute. Elastic telescopic limiting strips are fixedly connected to the upper and lower surfaces of the turning plate. One side surface of the limiting strip is an inclined surface.

2. The double-pushing fixture for one-time forming of symmetric parts according to claim 1, wherein: The driving mechanism includes two first racks and two second racks. The two first racks are respectively fixedly connected to the adjacent surfaces of the two first clamping plates, and both of the two first racks are located in the first chute. The two first racks penetrate through the first clamping plates. The bottom of the inner wall of the second chute is rotatably connected to a rotating shaft. A first gear is fixedly connected to the upper end of the rotating shaft. The first gear is located in the first chute. The two first racks are both engaged with the first gear. A second gear is rotatably connected to the surface of the rotating shaft corresponding to the second chute. A first cylinder and a second cylinder are fixedly connected to the surface of the base. The first cylinder is fixedly connected to the end of one of the first racks. The two second racks are respectively fixedly connected to the adjacent surfaces of the two second clamping plates, and both of the two second racks are located in the second chute. The two second racks penetrate through the second clamping plates. The two second racks are both engaged with the second gear. The second cylinder is fixedly connected to the end of one of the second racks.

3. The double-pushing fixture for one-time forming of symmetrical parts as claimed in claim 1, wherein: A limiting block is elastically and slidably connected to the surface of the first clamping plate. Limiting grooves are provided at the middle positions of the surfaces of the limiting strips on the upper and lower sides. A through opening is provided on the surface of the limiting block, and one side of the through opening is a slope. A sliding plate is elastically and slidably connected to the surface of the first clamping plate away from the limiting strip. An acting plate is fixedly connected to the surface of the sliding plate. The acting plate extends to the position of the through opening and the bottom of the acting plate is a slope. The acting plate can act on the limiting block. Trapezoidal blocks are fixedly connected to both sides of the surface of the sliding plate. The pressing rod can act on the trapezoidal blocks.

4. The double-pushing fixture for one-time forming of symmetrical parts according to claim 1, characterized in that: Fixed rods are fixedly connected to the surfaces of multiple support blocks. Through grooves are provided on the surfaces of the fixed rods. Adjacent support blocks slide in the through grooves on the same side.

5. The double-pushing fixture for one-time forming of symmetric parts according to claim 1, characterized in that: Retractable shielding plates are fixedly connected to the surface of the base corresponding to the positions of the four grooves, the first sliding groove, and the second sliding groove. The edge of the shielding plate located above the support block can be telescoped as the support block rises.

6. Method for using a double-pushing fixture for one-time forming of symmetrical parts, applicable to the double-pushing fixture for one-time forming of symmetrical parts according to any one of claims 1-5, characterized in that: The specific steps of this method are as follows: Step 1: When clamping the symmetric part, the driving mechanism can act on the first clamping plate and the second clamping plate to open and clamp the symmetric part. Step 2: After clamping and fixing, processing is carried out. After the processing is completed, the flipping mechanism can flip the symmetric part to process the other side. Step 3: During the processing, when the second clamping plate clamps the symmetric part, the supporting mechanism will support the symmetric part. Step 4: Subsequently, after both sides of the symmetric part are processed, a new workpiece is replaced for processing.

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