A clamping fixture for machining irregularly shaped workpieces

Abstract

This utility model relates to the field of irregular workpiece processing technology, and discloses a clamping fixture for processing irregular workpieces, including an irregular workpiece body, a mating hole inside the irregular workpiece body, and a side wall of the irregular workpiece body with a perforated surface and an inclined edge. It includes a support assembly, which includes a base, a connecting shaft, and a pin. The connecting shaft and the pin are inserted into the top side wall of the base, and the pin and the connecting shaft are inclined. It also includes an angle-adjustable fixing assembly, which effectively fixes and adjusts the irregular workpiece body, effectively adapting to the processing needs of irregular workpiece bodies with perforated surfaces at different angles, reducing the cost of fixture manufacturing and replacement time, and significantly improving the processing quality and efficiency of irregular workpieces.

Description

Technical Field

[0001] This utility model relates to the field of irregular workpiece processing technology, specifically a clamping fixture for irregular workpiece processing. Background Technology

[0002] With the rapid development of the manufacturing industry, irregularly shaped workpieces are increasingly widely used in machinery, automobiles, aerospace and other fields. Due to their special structure, irregularly shaped workpieces often have complex structures such as inclined perforated surfaces.

[0003] Currently, most clamping fixtures on the market for machining irregularly shaped workpieces are fixed structures, making it difficult to adjust the angle according to the different angles of the punched surfaces on the irregularly shaped workpieces. When machining irregularly shaped workpieces with punched surfaces at different angles, the overall operation is complicated, which not only increases the manufacturing and inventory costs of the fixtures, but also prolongs the time for fixture replacement and debugging, thus reducing production efficiency. In addition, the existing clamping fixtures have poor positioning effect on irregularly shaped workpieces and are difficult to accurately fit the special structure of the workpieces, which further affects the machining accuracy and cannot well meet the industry's demand for efficient and high-precision machining of irregularly shaped workpieces. Therefore, we propose a clamping fixture for machining irregularly shaped workpieces. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a clamping fixture for machining irregularly shaped workpieces, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a clamping fixture for machining irregularly shaped workpieces, comprising: The irregularly shaped workpiece body has a mating hole inside, and the side wall of the irregularly shaped workpiece body is a perforated surface with an inclined edge. A support assembly, comprising a base, a connecting shaft, and a pin, wherein the connecting shaft and the pin are inserted into the top sidewall of the base, and the pin and the connecting shaft are inclinedly distributed. An angle-adjustable fixing assembly includes a support member, a positioning threaded rod, a nut, and a fixing member. The bottom of the support member is rotatably engaged with a connecting shaft, and the side wall of the support member is inserted into a pin. The side wall of the support member is provided with a positioning threaded rod, which passes through the mating hole. The bottom of the irregular workpiece body is in contact with the support member. The top shaft end of the positioning threaded rod is provided with a fixing member, which is in contact with the top of the irregular workpiece body. The shaft end of the positioning threaded rod is provided with a nut, which is in contact with and fixed to the fixing member.

[0006] Preferably, the base is a rectangular plate structure, and two symmetrically distributed mating blocks are provided at the top center of the base. The mating blocks are right-angled trapezoidal plate structures, and a rotating groove is provided between the two mating blocks.

[0007] Preferably, a first connecting hole is provided at the bottom of the inclined side of the mating block sidewall, and the first connecting hole is inserted into the connecting shaft, and a second connecting hole is provided at the top of the mating block sidewall, and the second connecting hole is inserted into the pin shaft.

[0008] Preferably, the support member has a mating rod at the bottom, the mating rod is perpendicular to the side wall of the support member, and a fan-shaped plate is provided on the side of the bottom of the support member away from the mating rod. The support member has a connecting hole three at the bottom, the connecting hole three is concentric and corresponds to the connecting hole, and the connecting hole three is rotatably engaged with the connecting shaft. The support member has a mating hole one on the side wall, the mating hole one and the connecting hole three are spatially perpendicular.

[0009] Preferably, the sector plate is located inside the rotating groove, and a set of adjustment holes distributed in a ring are provided on the arc-shaped side of the sector plate. The adjustment holes and the connection holes are concentrically corresponding, and the adjustment holes are inserted into the pin shaft.

[0010] Preferably, the bottom shaft end of the positioning threaded rod is fixedly connected to the mating hole, and the positioning threaded rod and the mating rod are distributed in parallel.

[0011] Preferably, the fastener includes a first mating plate and a second mating plate, which are welded at an angle. A second mating hole is provided on one side wall of the first mating plate, which mates with a nut. The second mating plate is in contact with the perforated surface. The top of the second mating plate has multiple inclined reserved holes, and a positioning block is provided on the side wall of the second mating plate, which is in contact with the side wall of the nut.

[0012] Compared with the prior art, this utility model provides a clamping fixture for machining irregularly shaped workpieces, which has the following advantages: This clamping fixture for machining irregularly shaped workpieces can effectively adapt to the machining needs of irregularly shaped workpieces with drilling surfaces at different angles. The angle-adjustable fixing components allow for flexible angle adjustment, eliminating the need to manufacture separate fixtures for different angles, thus reducing manufacturing and replacement costs. During clamping, the cooperation of the positioning threaded rod, nut, and fixing components firmly clamps the irregularly shaped workpiece. The mating plate aligns with the drilling surface, and the positioning block assists in positioning to prevent wobbling, ensuring the workpiece's stable position during machining. This reduces machining errors caused by workpiece movement, improving machining quality and efficiency. It is suitable for various machining scenarios of irregularly shaped workpieces with inclined drilling surfaces, enhancing the fixture's versatility and practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the clamping fixture structure for machining irregularly shaped workpieces according to this utility model; Figure 2 This is a cross-sectional schematic diagram of the clamping fixture for machining irregularly shaped workpieces according to this utility model; Figure 3 This is a schematic diagram of the support component of this utility model; Figure 4 This is a schematic diagram of the fastener of this utility model.

[0014] In the diagram: 1. Base; 2. Support; 3. Positioning threaded rod; 4. Nut; 5. Irregular workpiece body; 6. Fixing component; 7. Connecting shaft; 8. Pin; 9. Mating block; 10. Rotating groove; 11. Connecting hole one; 12. Connecting hole two; 13. Mating hole; 14. Drilled surface; 15. Mating rod; 16. Sector plate; 17. Connecting hole three; 18. Adjusting hole; 19. Mating hole one; 20. Mating plate one; 21. Mating plate two; 22. Mating hole two; 23. Reserved hole; 24. Positioning block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution; A clamping fixture for machining irregularly shaped workpieces includes: The irregular workpiece body 5 has a mating hole 13 inside, and the side wall of the irregular workpiece body 5 is a punched surface 14, which is an inclined edge. The support assembly includes a base 1, a connecting shaft 7, and a pin 8. The connecting shaft 7 and the pin 8 are inserted into the top side wall of the base 1, and the pin 8 and the connecting shaft 7 are inclinedly distributed. An angle-adjustable fixing assembly includes a support 2, a positioning threaded rod 3, a nut 4, and a fixing member 6. The bottom of the support 2 is rotatably engaged with the connecting shaft 7, and the side wall of the support 2 is inserted into the pin shaft 8. The side wall of the support 2 is provided with a positioning threaded rod 3, which passes through the mating hole 13. The bottom of the irregular workpiece body 5 is in contact with the support 2. The top shaft end of the positioning threaded rod 3 is provided with a fixing member 6, which is in contact with the top of the irregular workpiece body 5. The shaft end of the positioning threaded rod 3 is provided with a nut 4, which is in contact with and fixed to the fixing member 6.

[0017] Furthermore, the base 1 has a rectangular plate structure, and two symmetrically distributed mating blocks 9 are provided at the top center of the base 1. The mating blocks 9 are right-angled trapezoidal plate structures, and a rotating groove 10 is provided between the two mating blocks 9. The two mating blocks 9 provide a support structure for the angle-adjustable fixing component, ensuring that the angle of the angle-adjustable fixing component can be adjusted normally. This enables the preparation work for precise drilling of the irregular workpiece body 5 with different drilling surfaces 14.

[0018] Furthermore, a connecting hole 11 is provided at the bottom of the inclined side of the side wall of the mating block 9, which is inserted into the connecting shaft 7, and a connecting hole 2 12 is provided at the top of the side wall of the mating block 9, which is inserted into the pin shaft 8.

[0019] Furthermore, the bottom of the support member 2 is provided with a mating rod 15, which is perpendicular to the side wall of the support member 2. A fan-shaped plate 16 is provided on the side of the bottom of the support member 2 away from the mating rod 15. A connecting hole 3 17 is opened at the bottom of the support member 2. The connecting hole 3 17 is concentrically corresponding to the connecting hole 1 11, and the connecting hole 3 17 is rotatably engaged with the connecting shaft 7. A mating hole 19 is opened on the side wall of the support member 2. The mating hole 19 is spatially perpendicular to the connecting hole 3 17. The mating rod 15 can lift the irregular workpiece body 5 for quick fixation. When adjusting the angle, the pin 8 is removed. At this time, the angle-adjustable fixing component and the irregular workpiece body 5 can rotate around the connecting shaft 7 through the connecting hole 3 17. At this time, the adjusting hole 18 rotates around the connecting shaft 7. When the angle is appropriate, the pin 8 is inserted, so that the adjusting hole 18 and the connecting hole 2 12 are inserted and fixed. At this time, the angle is fixed, thus completing the angle adjustment.

[0020] Furthermore, the sector plate 16 is located inside the rotating groove 10, and a set of annularly distributed adjustment holes 18 are provided on the arc-shaped side of the sector plate 16. The adjustment holes 18 are concentrically corresponding to the connecting holes 12, and the adjustment holes 18 are inserted into the pin 8.

[0021] Furthermore, the bottom shaft end of the positioning threaded rod 3 is fixedly connected to the mating hole 19, and the positioning threaded rod 3 and the mating rod 15 are distributed in parallel. The positioning threaded rod 3 passes through the mating hole 13 inside the irregular workpiece body 5, and then passes through the mating hole 22 of the fixing part 6. Finally, the fixing part 6 is fixed by the nut 4, so that the irregular workpiece body 5 is clamped between the fixing part 6 and the support part 2.

[0022] Furthermore, the fastener 6 includes a first mating plate 20 and a second mating plate 21, which are welded at an angle. The first mating plate 20 has a second mating hole 22 on its side wall, which mates with the nut 4. The second mating plate 21 is in contact with the drilling surface 14. The top of the second mating plate 21 has multiple inclined reserved holes 23, and the side wall of the second mating plate 21 has a positioning block 24, which is in contact with the side wall of the nut 4. After clamping, the second mating plate 21 is in contact with the drilling surface 14. The positioning block 24 plays an auxiliary positioning role to prevent shaking. At this time, the drilling equipment can be used to drill holes in the reserved holes 23, thereby improving the drilling quality of the irregular workpiece body 5.

[0023] Structural Description: Base 1: It has a rectangular plate structure and is the basic support component of the tooling. There are two axisymmetric mating blocks 9 at the top center, which provide the installation and support foundation for the angle-adjustable fixing components and ensure the stability of the overall structure. Support component 2: The bottom has a mating rod 15 and a fan-shaped plate 16, with a connecting hole 3 17 and a mating hole 19. The bottom is rotatably mated with the connecting shaft 7, and the side wall is inserted with the pin shaft 8. It can support the irregular workpiece body 5 and adjust the angle. Positioning threaded rod 3: The bottom shaft end is fixed to the mating hole 19 of the support 2, parallel to the mating rod 15, and passes through the mating hole 13 of the irregular workpiece body 5 and the mating hole 22 of the fixing part 6, and is clamped by the nut 4. Nut 4: It mates with the shaft end of the positioning threaded rod 3 and fits against the fixing part 6. After tightening, the fixing part 6 can be fixed on the positioning threaded rod 3, so that the irregular workpiece body 5 is clamped between the fixing part 6 and the support part 2. The irregular workpiece body 5 has a mating hole 13 inside and an inclined drilling surface 14 on the side wall. It is the object to be processed and needs to be fixed by tooling. During processing, the pre-reserved hole 23 is used to drill holes on the drilling surface 14. Fixing component 6: It is formed by inclined welding of mating plate 1 20 and mating plate 21. The mating plate 1 20 has mating hole 22. The mating plate 21 fits with the perforated surface 14 and has a reserved hole 23 and a positioning block 24 for clamping the workpiece. Connecting shaft 7: It is inserted into the connecting hole 11 of the base 1 mating block 9 and the connecting hole 17 of the support 2, providing a rotation axis for the support 2 and the angle adjustable fixing assembly, ensuring angle adjustment; Pin 8: It is inclined to the connecting shaft 7 and is inserted into the connecting hole 12 of the mating block 9 and the adjusting hole 18 of the sector plate 16 of the support member 2. It can be inserted and removed and is used to fix the angle of the support member 2 after adjustment. Matching block 9: It is a right-angled trapezoidal plate structure, with two in total and symmetrically distributed on the top of the base 1. It has a connecting hole 11 and a connecting hole 12, forming a rotating groove 10 between them to provide support for the angle adjustment component. Rotating groove 10: Located between two mating blocks 9, it is space-adapted to the sector plate 16, providing room for the sector plate 16 to rotate with the support member 2, ensuring that the support member 2 rotates around the connecting shaft 7 without obstruction; Connection hole 11: It is opened at the bottom of the inclined side of the side wall of the mating block 9, and is inserted into the connecting shaft 7 to provide a mounting hole for the connecting shaft 7, so that the connecting shaft 7 can stably connect the mating block 9 and the support member 2; Connection hole 2 12: It is opened on the top of the side wall of the mating block 9, and is inserted into the pin 8. It is concentrically corresponding to the adjustment hole 18 of the sector plate 16. The angle of the support member 2 is fixed by inserting the pin 8. Mating hole 13: It is opened inside the irregular workpiece body 5, and the hole diameter is adapted to the positioning threaded rod 3, so that the positioning threaded rod 3 can pass through, allowing the irregular workpiece body 5 to be fitted onto the positioning threaded rod 3, which is convenient for subsequent clamping and fixing. Drilling surface 14: This is the side wall of the irregular workpiece body 5, which is inclined and is the working surface for drilling. It needs to be in contact with the mating plate 21 of the fixing part 6. During processing, the pre-reserved hole 23 is drilled on this surface. Matching rod 15: Set at the bottom of support 2, perpendicular to the side wall of support 2, it can lift the bottom of the irregular workpiece body 5, assist the irregular workpiece body 5 in quick positioning and fixing, and ensure that the workpiece is stably placed on support 2. Sector plate 16: Located on the bottom of the support member 2 away from the mating rod 15, inside the rotating groove 10, with annularly distributed adjustment holes 18 on the arc-shaped side, which are used for angle adjustment and positioning as the support member 2 rotates. Connecting hole 317: It is opened at the bottom of the support 2 and is concentrically corresponding to the connecting hole 11 of the mating block 9. It is rotatably engaged with the connecting shaft 7 and provides a hole for the support 2 to rotate around the connecting shaft 7, ensuring smooth rotation. Adjustment hole 18: It is opened on the arc-shaped side of the fan-shaped plate 16, and a group of them are distributed in a ring. It is concentrically corresponding to the connection hole 12 of the mating block 9 and is inserted into the pin 8. The support 2 can be fixed at multiple angles through different hole positions. Matching hole 19: It is opened on the side wall of the support 2 and is spatially perpendicular to the connecting hole 3 17. It is fixedly connected to the bottom shaft end of the positioning threaded rod 3, providing a mounting and fixing hole for the positioning threaded rod 3. Mating plate 1 20: It is a component of fastener 6 and is inclinedly welded to mating plate 21. The side wall has mating hole 22, which mates with nut 4 and provides a connection base for nut 4 and positioning threaded rod 3. Matching plate 21: It is a component of fastener 6, fits against the drilling surface 14, has multiple inclined pre-drilled holes 23 on the top, and has positioning blocks 24 on the side wall, which assist in positioning when clamped and provide a reference for drilling. Hole 22: It is opened on the side wall of mating plate 1 20. The hole diameter is adapted to the positioning threaded rod 3, so that the positioning threaded rod 3 can pass through, and the fixing part 6 can be fitted on the positioning threaded rod 3, which is convenient for the nut 4 to be fixed. Reserved holes 23: are opened on the top of the mating plate 21, are inclined and multiple, correspond to the drilling surface 14, and are used in conjunction with the drilling equipment during drilling to provide a positioning reference for the drilling operation of the irregular workpiece body 5; Positioning block 24: It is set on the side wall of mating plate 21 and fits against the side wall of nut 4. When clamped, it can restrict the position of nut 4, prevent nut 4 from loosening or shifting, and help ensure the clamping stability of the fastener 6 on the workpiece.

[0024] Working Principle: The fixture for machining irregularly shaped workpieces is correctly installed according to the diagram. When in operation, the fixture first provides basic support through the support assembly. Two mating blocks 9 at the top of the base 1 form a support structure. Connecting holes 11 on the mating blocks 9 are inserted into the connecting shaft 7, and connecting holes 12 are inserted into the pin 8. In the angle-adjustable fixing assembly, connecting holes 17 at the bottom of the support member 2 are rotatably engaged with the connecting shaft 7. The sector plate 16 is located in the rotating groove 10 between the mating blocks 9. When it is necessary to adjust the angle of the irregularly shaped workpiece body 5 to accommodate drilling requirements, the pin 8 is removed. The angle-adjustable fixing assembly and the irregularly shaped workpiece body 5 can rotate around the connecting shaft 7. At this time, the adjusting holes 18 on the sector plate 16 move synchronously with the rotation. Once the angle is adjusted to allow the irregularly shaped workpiece to rotate... After the punched surface 14 of the workpiece body 5 is in a suitable processing position, the pin 8 is inserted into the corresponding adjustment hole 18 and the second connecting hole 12 to fix the angle. Then, the clamping operation is performed. The bottom of the positioning threaded rod 3 is fixed with the mating hole 19 of the support 2. After passing through the mating hole 13 of the irregular workpiece body 5, it passes through the mating hole 22 of the fixing part 6. Finally, it is tightened by the nut 4, so that the mating plate 21 of the fixing part 6 is in contact with the top of the irregular workpiece body 5. The mating rod 15 of the support 2 lifts the bottom of the irregular workpiece body 5, thereby firmly clamping the irregular workpiece body 5 between the fixing part 6 and the support 2. At the same time, the positioning block 24 on the mating plate 21 is in contact with the side wall of the nut 4 to assist in positioning. After clamping is completed, the drilling operation can be performed at the reserved hole 23 with the drilling equipment.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping fixture for machining irregularly shaped workpieces, characterized in that, include: The irregular workpiece body (5) has a mating hole (13) inside, and the side wall of the irregular workpiece body (5) is a perforated surface (14), and the perforated surface (14) is an inclined edge. The support assembly includes a base (1), a connecting shaft (7), and a pin (8). The connecting shaft (7) and the pin (8) are inserted into the top side wall of the base (1), and the pin (8) and the connecting shaft (7) are inclinedly distributed. An angle-adjustable fixing assembly includes a support (2), a positioning threaded rod (3), a nut (4), and a fixing member (6). The bottom of the support (2) is rotatably engaged with the connecting shaft (7), and the side wall of the support (2) is inserted into the pin shaft (8). The side wall of the support (2) is provided with a positioning threaded rod (3), which passes through the mating hole (13). The bottom of the irregular workpiece body (5) is in contact with the support (2). The top shaft end of the positioning threaded rod (3) is provided with a fixing member (6), which is in contact with the top of the irregular workpiece body (5). The shaft end of the positioning threaded rod (3) is provided with a nut (4), which is in contact with and fixed to the fixing member (6).

2. The shaped workpiece machining clamping tool of claim 1, wherein, The base (1) has a rectangular plate structure, and two symmetrically distributed mating blocks (9) are provided at the top center of the base (1). The mating blocks (9) are right-angled trapezoidal plate structures, and a rotating groove (10) is provided between the two mating blocks (9).

3. The clamping fixture for machining irregularly shaped workpieces according to claim 2, characterized in that, The bottom of the inclined side of the side wall of the mating block (9) is provided with a connecting hole 1 (11), which is inserted into the connecting shaft (7), and the top of the side wall of the mating block (9) is provided with a connecting hole 2 (12), which is inserted into the pin shaft (8).

4. The shaped workpiece machining clamping fixture of claim 1, wherein, The support member (2) has a mating rod (15) at the bottom. The mating rod (15) is perpendicular to the side wall of the support member (2). The support member (2) has a fan-shaped plate (16) on the side away from the mating rod (15) at the bottom. The support member (2) has a connecting hole three (17) at the bottom. The connecting hole three (17) is concentrically corresponding to the connecting hole one (11). The connecting hole three (17) is rotatably engaged with the connecting shaft (7). The support member (2) has a mating hole one (19) on the side wall. The mating hole one (19) is spatially perpendicular to the connecting hole three (17).

5. The clamping fixture for machining irregularly shaped workpieces according to claim 4, characterized in that, The sector plate (16) is located inside the rotating groove (10), and a set of adjustment holes (18) distributed in a ring are provided on the arc side of the sector plate (16). The adjustment holes (18) are concentrically corresponding to the second connection hole (12), and the adjustment holes (18) are inserted into the pin (8).

6. The clamping fixture for machining irregularly shaped workpieces according to claim 1, characterized in that, The bottom shaft end of the positioning threaded rod (3) is fixedly connected to the mating hole (19), and the positioning threaded rod (3) and the mating rod (15) are distributed in parallel.

7. The clamping fixture for machining irregularly shaped workpieces according to claim 1, characterized in that, The fastener (6) includes a first mating plate (20) and a second mating plate (21), and the first mating plate (20) and the second mating plate (21) are welded at an inclination. The side wall of the first mating plate (20) is provided with a second mating hole (22), which is mated with the nut (4). The second mating plate (21) is attached to the perforated surface (14). The top of the second mating plate (21) is provided with multiple inclination reserved holes (23), and the side wall of the second mating plate (21) is provided with a positioning block (24), which is attached to the side wall of the nut (4).

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