Clamp for machining heavy head support

Abstract

The application relates to a clamp for machining a heavy head support, which comprises a mounting seat arranged on a four-axis workbench, a plane fixing assembly and a vertical fixing assembly are arranged on the mounting seat; the plane fixing assembly comprises an arc-shaped supporting block and an intermediate abutting pin, the arc-shaped supporting block supports the head of the heavy head support from one side close to the mounting seat, a slot for accommodating a cylinder structure of the head of the heavy head support is formed in the arc-shaped supporting block, the intermediate abutting pin is located in a through hole at the center of the heavy head support, and a pin head of the intermediate abutting pin points to the arc-shaped supporting block; the vertical fixing assembly comprises a bottom surface supporting block and a pressing air cylinder, the bottom surface supporting block supports a middle plate of the heavy head support and is located at one end close to a tail of the heavy head support; and the pressing air cylinder presses the heavy head support from one side away from the mounting seat. According to the structural characteristics of the heavy head support, the heavy head support can be clamped more stably.

Description

Technical Field

[0001] This application relates to the technical field of machining, and in particular to a fixture for machining a heavy-end support. Background Technology

[0002] Currently, a uniquely shaped top-mounted bracket is commonly used in the lower control arm of vehicles. After the top-mounted bracket is injection molded, it needs to be transferred to a machining center for machining of its outer curved surface. During machining, the top-mounted bracket needs to be fixed on a four-axis worktable, and the four-axis worktable needs to be rotated; therefore, the stability of the top-mounted bracket is crucial.

[0003] The top-mounted support mainly consists of three integrally designed parts. The first part is a central plate located in the middle of the support, with irregularly shaped structures on both sides along its width, and a through hole in the center. The second part is the head, which has two cylindrical structures along the width of the central plate, and the sides of these cylindrical structures are also present. The third part is the tail, which has a ring structure that curves upward relative to the central plate. Due to the complex structure of the top-mounted support, existing clamps are insufficient for securing it. Utility Model Content

[0004] To achieve a firm gripping of the top-mounted support, this application provides a fixture for machining the top-mounted support.

[0005] A fixture for machining a top-mounted support adopts the following technical solution: A fixture for machining a top-end support includes a mounting base on a four-axis worktable. The mounting base has a planar fixing component and a vertical fixing component. The planar fixing component includes an arc-shaped support block and a central abutment pin. The arc-shaped support block supports the head of the top-end support from the side closest to the mounting base, and has a groove for accommodating a cylindrical structure of the top-end support head. The central abutment pin is located in a through hole at the center of the top-end support, with its pin head pointing towards the arc-shaped support block. The vertical fixing component includes a bottom support block and a pressing cylinder. The bottom support block supports the middle plate of the top-end support and is located at one end near the tail of the top-end support. The pressing cylinder presses the top-end support from the side furthest from the mounting base.

[0006] By adopting the above technical solution, a special fixture is designed for the characteristics of the head support. The arc-shaped support block and the middle abutment pin can work together to support the head of the head in the length direction. The bottom support block and the pressing cylinder can support the head support in the thickness direction. The head support is fixed by the horizontal and thickness support, which facilitates subsequent processing.

[0007] Preferably, the pressing cylinder is a rotary pressing cylinder, and the output end of the pressing cylinder is provided with a pressing rod. When the pressing rod rotates to above the top support, the cylinder presses down and fixes the top support.

[0008] By adopting the above technical solution, when placing the top support, the pressure rod of the pressing cylinder can be rotated to the other side, allowing the pressing cylinder to be lowered vertically, thus avoiding interference from the pressure rod in placing the top support and facilitating its placement.

[0009] Preferably, the mounting base is further provided with a clamping assembly, which includes a lifting cylinder, a pressing block, a base, a connecting block and an abutting block, wherein the lifting cylinder and the base are both vertically arranged on the mounting base; One end of the connecting block is rotatably connected to the base, and the other end of the connecting block is rotatably connected to the middle of the pressing block. One end of the pressing block is rotatably connected to the output end of the lifting cylinder, and the other end of the pressing block is located above the head support. The other end of the pressing block cooperates with the abutment block set on the mounting base to clamp the head support. The clamping assembly clamps the middle plate of the head support and is located at the end near the head.

[0010] By adopting the above technical solution, the clamping components are added to enhance the stability of the top support and prevent it from shaking.

[0011] Preferably, the two arc-shaped support blocks respectively support the two cylindrical structures at the head of the weight-bearing bracket; the pressing cylinder includes a first pressing cylinder and a second pressing cylinder, the first pressing cylinder and the second pressing cylinder respectively pressing the cylindrical structure.

[0012] By adopting the above technical solution, the arc-shaped support block supports the head bracket from the side close to the mounting base, and the pressing cylinder presses the head bracket from the side away from the mounting base, thereby fixing the head of the head bracket.

[0013] Preferably, the intermediate abutment pin includes a mounting block and a pin head and a fixing bolt rotatably disposed on the mounting block. The mounting block has a horizontally threaded hole. The pin head is threaded to one end of the threaded hole, and the fixing bolt is threaded to the other end of the threaded hole, with the fixing bolt supporting the pin head.

[0014] By adopting the above technical solution, the extension length of the pin head can be adjusted through the threaded structure. Before placing the counterweight bracket, the distance between the pin head and the arc-shaped support block is adjusted to a suitable distance, thereby limiting the length of the counterweight bracket.

[0015] Preferably, the horizontal fixing component further includes a lateral abutment pin and a backing; the lateral abutment pin and the backing are respectively disposed on both sides in the width direction of the middle plate of the top support, and support the top support from both sides; the pressing cylinder further includes a third pressing cylinder, which is disposed near the lateral abutment block.

[0016] By adopting the above technical solution, the width direction of the top support is limited by the lateral abutment pin and the backing.

[0017] Preferably, the planar fixing assembly further includes a lateral support block disposed on the mounting base. The lateral support block is disposed at the tail of the top support bracket, and the side wall of the lateral support block abuts against the annular structure at the tail of the top support bracket. The lateral support block supports the top support bracket on the side away from the lateral abutment pin.

[0018] By adopting the above technical solution, the lateral support block and the lateral abutment pin cooperate with each other to support the tail of the heavy head bracket from the side, enhance the fixing effect, and effectively prevent it from shaking.

[0019] Preferably, the arc-shaped support block includes a top abutment portion and a lower abutment portion. The top abutment portion supports the cylindrical structure along the length of the top support, and the lower abutment portion supports the top support from the top of the cylindrical structure. The top abutment portion and the lower abutment portion cooperate to form a groove with an arc matching the cylindrical structure.

[0020] By adopting the above technical solution, the arc-shaped support frame is designed according to the shape of the same structure, which can more stably support the top support.

[0021] Preferably, the pressing cylinder further includes a fourth pressing cylinder, which is located at the tail of the weighted support and presses the annular structure from the side away from the mounting base.

[0022] By adopting the above technical solution, the fourth pressing cylinder presses the tail of the head support, thereby enhancing the stability of the head support.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. Designed according to the structural characteristics of the top-mounted support, it can fix the head, tail, and middle of the top-mounted support from various directions, which can clamp the top-mounted support more stably and achieve better fixation effect; 2. Using a rotary pressing cylinder, the top support can be placed directly on the fixture, making installation more convenient. Attached Figure Description

[0024] Figure 1This is an isometric schematic diagram of the top-heavy support in the embodiments of this application; Figure 2 This is an isometric schematic diagram of the main overall structure in the embodiments of this application; Figure 3 This is a top view that mainly reflects the overall structure in the embodiments of this application; Figure 4 It mainly reflects the structure of the clamping component. Figure 2 Detailed diagram of position A in the middle; Figure 5 This is an isometric schematic diagram of the structure with a top-mounted support installed in an embodiment of this application.

[0025] Reference numerals: 1. Top support; 11. Cylindrical structure; 12. Through hole; 13. Ring structure; 14. Middle plate; 2. Mounting base; 3. Planar fixing component; 31. Arc-shaped support block; 311. Top abutment part; 312. Lower abutment part; 32. Middle abutment pin; 33. Lateral abutment pin; 34. Backing; 35. Lateral support block; 4. Vertical fixing component; 41. Bottom support block; 42. Pressing cylinder; 421. First pressing cylinder; 422. Second pressing cylinder; 423. Third pressing cylinder; 424. Fourth pressing cylinder; 5. Clamping component; 51. Lifting cylinder; 52. Pressing block; 53. Base; 54. Connecting block; 55. Abutment block. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0027] This application discloses a fixture for machining a heavy-duty support.

[0028] Reference Figure 1 The head support 1 includes a central plate 14 in the middle, two cylindrical structures 11 at the head, and a ring structure 13 at the tail. The two sides of the central plate 14 in the width direction are irregularly curved, making it difficult to clamp with ordinary fixtures. A through hole 12 is provided in the middle of the central plate 14. The two cylindrical structures 11 are arranged along the width direction of the central plate 14, and their sides are connected to the central plate 14. The side of the ring structure 13 is connected to the central plate 14, and the ring structure 13 is curved upwards relative to the central plate 14. Because the head support 1 has an irregular shape, existing fixtures are difficult to use to fix it. After fixing the head support 1, its outer curved surface needs to be machined, so it is also necessary to avoid interference between the fixture and the area to be machined.

[0029] Reference Figure 2 and 3A fixture for machining a top-mounted support includes a mounting base 2 mounted on a four-axis worktable. The mounting base 2 is provided with a planar fixing component 3 and a vertical fixing component 4. The planar fixing component 3 and the vertical fixing component 4 are designed according to the characteristics of the top-mounted support 1. They can ensure clamping stability while taking into account the advantages of convenient assembly and disassembly and low cost. The planar fixing component 3 and the vertical fixing component fix the top-mounted support 1 in the horizontal and vertical directions respectively, so that the top-mounted support 1 remains stable when rotating.

[0030] Reference Figure 2 and 3 The planar fixing component 3 includes an arc-shaped support block 31 and a central abutment pin 32. The arc-shaped support block 31 is L-shaped and supports the cylindrical structure 11 from the side near the mounting base 2. The arc-shaped support block 31 includes a top abutment portion 311 and a lower abutment portion 312. The top abutment portion 311 supports the cylindrical structure 11 along the length of the top support 1, and the lower abutment portion 312 supports the top support 1 from the top of the cylindrical structure 11. The top abutment portion 311 and the lower abutment portion 312 cooperate to form a groove that matches the curvature of the cylindrical structure 11. The central abutment pin 32 is located in the through hole 12 at the center of the top support 1, and the pin head of the central abutment pin 32 points towards the arc-shaped support block 31. The position of the pin head on the central abutment pin 32 is adjustable. The top abutment portion 311 and the central abutment pin 32 cooperate to clamp the top support 1 along the length direction, which is the head-to-tail direction of the top support 1.

[0031] Reference Figure 2 and 3 The planar fixing component 3 also includes a lateral abutment pin 33 and a backrest 34. The lateral abutment pin 33 and the backrest 34 are respectively disposed on both sides of the middle plate 14 of the top support 1 in the width direction, and support the top support 1 from both sides. Since the side of the top support 1 is irregular, in some embodiments, the difference from this embodiment is that the lateral abutment pin 33 and the backrest 34 are rotatably disposed on the mounting base 2, and the lateral abutment pin 33 and the backrest 34 can rotate according to the side curvature of the top support 1, and always closely adhere to the top support 1.

[0032] Reference Figure 2 and 3The vertical fixing component 4 includes a bottom support block 41 and a pressing cylinder 42. The bottom support block 41 is located at one end near the tail of the head support 1 and is used to support the middle plate 14 of the head support 1. The bottom support block 41 and the lower abutment part 312 cooperate to support the tail and head of the middle plate 14 respectively, ensuring the stability of the head support 1. The vertical fixing component 4 also includes multiple pressing cylinders 42, including a first pressing cylinder 421, a second pressing cylinder 422, a third pressing cylinder 423, and a fourth pressing cylinder 424. The first pressing cylinder 421 and the second pressing cylinder 422 are symmetrically arranged at the head position of the head support 1. The first pressing cylinder 421 and the second pressing cylinder 422 press the two cylindrical structures 11 from the side away from the mounting base 2, respectively. The third pressing cylinder 423 is located near the lateral abutment block 55 and presses the middle plate 14. The planar fixing assembly 3 also includes a lateral support block 35 disposed on the mounting base 2. The lateral support block 35 is disposed at the tail of the top support bracket 1 and is L-shaped. One side of the lateral support block 35 is fixed to the mounting base 2, and the other side is located on the side of the annular structure 13 at the tail of the top support bracket 1. The side wall of the lateral support block 35 abuts against the side of the annular structure 13 away from the lateral abutment pin 33. The pressing cylinder 42 also includes a fourth pressing cylinder 424, which is located at the tail of the top support bracket 1, close to the lateral support block 35, and presses the annular structure 13 from the side away from the mounting base 2. The bottom support block 41 is located at the bottom of the top support bracket 1. The pressing cylinders 42 all press from the top of the top support bracket 1, thereby fixing the top support bracket 1 in the thickness direction.

[0033] Reference Figure 2 and 3 Multiple pressing cylinders 42 are rotary pressing cylinders. The output end of the pressing cylinder 42 is equipped with a pressure rod. When the head support 1 is placed in the designated position, the pressure rods of multiple pressing cylinders 42 can be controlled to rotate and press down simultaneously to clamp the head support 1.

[0034] Reference Figure 4The mounting base 2 is also equipped with a clamping assembly 5, which is positioned near the head of the top support 1 and clamps the central plate 14 of the top support 1. The clamping assembly 5 includes a lifting cylinder 51, a pressing block 52, a base 53, a connecting block 54, and an abutment block 55. The lifting cylinder 51 and the base 53 are both vertically mounted on the mounting base 2. One end of the connecting block 54 is rotatably connected to the base 53, and the other end is rotatably connected to the center of the pressing block 52. The end of the pressing block 52 is rotatably connected to the output end of the lifting cylinder 51, and the other end of the pressing block 52 is located above the top support 1. The end of the pressing block 52 on the top support 1 cooperates with the abutment block 55 on the mounting base 2 to clamp the central plate 14. There are two clamping assemblies 5, both located near the head of the top support 1, clamping the top support 1 from two directions inside the top support 1.

[0035] Reference Figure 2 and 3 The intermediate abutment pin 32 and the lateral abutment pin 33 have the same structure, both including a mounting block and a pin head and a fixing bolt rotatably mounted on the mounting block. A threaded hole is horizontally opened on the mounting block. The pin head is threaded to one end of the threaded hole, and the fixing bolt is threaded to the other end of the threaded hole, with the fixing bolt supporting the pin head. Furthermore, the height of both the intermediate abutment pin 32 and the lateral abutment pin 33 is lower than the side of the top support 1 furthest from the mounting base 2, preventing interference with the installation of the top support 1.

[0036] The implementation principle of this application embodiment is as follows: the top support 1 is fixed on the mounting frame by the vertical fixing component 4 and the planar fixing component 3. The specific fixing steps are as follows: first, adjust the extension length of the pin head of the middle abutment pin 32 and the side abutment pin 33 according to the position and size of the top support 1; drive the lifting cylinder 51 to descend, so that the pressing block 52 is raised, and then place the top support 1 vertically on the mounting frame, so that the top support 1 can be just locked between the arc-shaped support block 31 and the middle abutment pin 32 in the length direction, and between the backrest 34 and the side abutment pin 33 in the width direction; drive the lifting cylinder 51 to rise, so that the pressing block 52 clamps the top support 1; drive the output end of the pressing cylinder 42 to rotate and descend, and fix the top support 1.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixture for machining a heavy-duty support, comprising a mounting base (2) disposed on a four-axis worktable, characterized in that: The mounting base (2) is provided with a planar fixing component (3) and a vertical fixing component (4); The planar fixing component (3) includes an arc-shaped support block (31) and an intermediate abutment pin (32). The arc-shaped support block (31) supports the head of the top support bracket (1) from the side near the mounting base (2). The arc-shaped support block (31) has a groove for accommodating the cylindrical structure (11) of the head of the top support bracket (1). The intermediate abutment pin (32) is located in the through hole (12) in the center of the top support bracket (1). The pin head of the intermediate abutment pin (32) points towards the arc-shaped support block (31). The vertical fixing component (4) includes a bottom support block (41) and a pressing cylinder (42). The bottom support block (41) supports the middle plate (14) of the top support bracket (1) and is located at one end near the tail of the top support bracket (1). The pressing cylinder (42) presses the top support bracket (1) from the side away from the mounting base (2).

2. The fixture for machining a top-mounted support according to claim 1, characterized in that: The pressing cylinder (42) is a rotary pressing cylinder. The output end of the pressing cylinder (42) is provided with a pressing rod. When the pressing rod rotates to above the top support (1), the cylinder presses down and fixes the top support (1).

3. The fixture for machining a top-mounted support according to claim 1, characterized in that: The mounting base (2) is also provided with a clamping assembly (5), which includes a lifting cylinder (51), a pressing block (52), a base (53), a connecting block (54) and an abutment block (55). The lifting cylinder (51) and the base (53) are both vertically arranged on the mounting base (2). One end of the connecting block (54) is rotatably connected to the base (53), the other end of the connecting block (54) is rotatably connected to the middle of the pressing block (52), one end of the pressing block (52) is rotatably connected to the output end of the lifting cylinder (51), the other end of the pressing block (52) is located above the top support (1), and the other end of the pressing block (52) cooperates with the abutment block (55) set on the mounting base (2) to clamp the top support (1); The clamping assembly (5) clamps the middle plate (14) of the head support (1) and is located at one end near the head.

4. The fixture for machining a top-mounted support according to claim 1, characterized in that: The two arc-shaped support blocks (31) respectively support the two cylindrical structures (11) at the head of the head support (1); The pressing cylinder (42) includes a first pressing cylinder (421) and a second pressing cylinder (422), which press the cylindrical structure (11) respectively.

5. A fixture for machining a top-mounted support according to claim 1, characterized in that: The intermediate abutment pin (32) includes a mounting block and a pin head and a fixing bolt rotatably mounted on the mounting block. A threaded hole is horizontally opened on the mounting block. The pin head is threaded to one end of the threaded hole, and the fixing bolt is threaded to the other end of the threaded hole. The fixing bolt supports the pin head.

6. A fixture for machining a top-mounted support according to claim 3, characterized in that: The planar fixing component (3) further includes a lateral abutment pin (33) and a backrest (34); the lateral abutment pin (33) and the backrest (34) are respectively disposed on both sides of the width direction of the middle plate (14) of the top support (1) and support the top support (1) from both sides; The pressing cylinder (42) also includes a third pressing cylinder (423), which is located near the abutment block (55).

7. A fixture for machining a top-mounted support according to claim 6, characterized in that: The planar fixing component (3) further includes a lateral support block (35) disposed on the mounting base (2). The lateral support block (35) is disposed at the tail of the top support bracket (1), and the side wall of the lateral support block (35) abuts against the annular structure (13) at the tail of the top support bracket (1). The lateral support block (35) is supported on the side of the top support bracket (1) away from the lateral abutment pin (33).

8. A fixture for machining a top-mounted support according to claim 1, characterized in that: The arc-shaped support block (31) includes a top abutment portion (311) and a lower abutment portion (312). The top abutment portion (311) supports the cylindrical structure (11) along the length of the top support (1), and the lower abutment portion (312) supports the top support (1) from the top of the cylindrical structure (11). The top abutment portion (311) and the lower abutment portion (312) cooperate to form a groove with an arc matching the cylindrical structure (11).

9. A fixture for machining a top-mounted support according to claim 7, characterized in that: The pressing cylinder (42) further includes a fourth pressing cylinder (424), which is located at the tail of the head support (1) and presses the annular structure (13) from the side away from the mounting base (2).

Images