Special clamp for milling surfaces of automobile parts

Abstract

The utility model relates to the technical field of automobile part production, in particular to a special clamp for automobile part milling, which comprises a fixing table, a positioning component and a clamping component, and the middle position of the upper end face of the fixing table is used for connecting the positioning component; the outer side of the fixing table is used for being connected with clamping assemblies circumferentially distributed with the central axis of the positioning assembly as the center, the lower end face of the fixing table is used for being connected with a plurality of cushion blocks, and the cushion blocks support the lower portion of the fixing table to form a certain space for containing the expansion assembly. According to the utility model, the positioning assembly is used for positioning and limiting the compressor shell so as to facilitate subsequent fixation and clamping of the compressor shell, and the expansion assembly in the positioning assembly can expand outwards during use so as to increase the diameter of the positioning assembly, so that the positioning assembly is suitable for compressor shells with various sizes; the clamping assembly moves towards the positioning assembly in the using state and clamps and fixes a workpiece arranged on the outer side of the positioning assembly in a sleeving mode.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to a special fixture for milling automotive parts. Background Technology

[0002] Milling is a cutting process in which the rotation of the milling cutter is the primary motion, while the workpiece undergoes a feed motion. During the rotation of the milling cutter, its multiple cutting edges alternately cut the surface of the workpiece, thereby achieving the machining of the workpiece surface.

[0003] A search revealed Chinese Patent Publication No. CN210967154U, which discloses a milling fixture for an automotive compressor housing. The fixture includes a base plate, a positioning frustum, a clamping plate, an end face pin, a telescopic pressure plate, and a side pin. A positioning seat is provided on the base plate, and the positioning frustum is located on the top surface of the positioning seat. The clamping plate is detachably connected to a screw hole on the positioning frustum via a screw rod. The diameter of the clamping plate is larger than the diameter of the positioning frustum. The end face pin and the telescopic pressure plate are both connected to the piston rod of a first cylinder via a first connecting plate. The side pin is connected to the piston rod of a second cylinder via a second connecting plate. This invention clamps and positions the housing workpiece from the inside and sides, avoiding milling areas along the workpiece's contour. This allows all milling operations to be performed on a single fixture, reducing the number of fixtures required and eliminating the need for fixture changes.

[0004] However, in the above technical solution, the compressor housing is positioned only by the positioning frustum and the clamping plate, and the compressor housing is fixed by the components on the first cylinder and the second cylinder. However, the positioning frustum in this patent can only position compressor housings of the same diameter. When dealing with compressor housings of various models and sizes, additional clamps are required. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a special fixture for milling automotive parts.

[0006] The technical solution of this utility model is as follows: a special fixture for milling automotive parts, including a fixed table with multiple pads connected below it; a positioning component connected to the fixed table; the positioning component adjusts its own size to position the workpiece in use; and multiple clamping components are evenly distributed and connected to the fixed table; the clamping components move towards the positioning component to clamp the workpiece in use.

[0007] Preferably, the positioning component includes a positioning post connected to a fixed platform, the positioning post having a threaded hole; a clamping cover with a threaded post connected below it, the threaded post being detachably connected to the threaded hole; and an expansion component connected to the fixed platform. In use, the expansion component increases the outer diameter of the positioning post to accommodate different workpieces.

[0008] Preferably, the expansion assembly includes a rotating shaft, one end of which is rotatably connected to a through hole in a fixed platform, and the other end of which passes through the fixed platform; a driving gear connected to the rotating shaft; a fixed shaft arranged parallel to the rotating shaft and rotatably connected to the fixed platform; a driven gear connected to the fixed shaft, which meshes with the driving gear and is provided with multiple circumferentially distributed adjustment slots; multiple expansion plates circumferentially distributed and fitted onto the outside of the positioning post; connecting plates, the number of which corresponds to the adjustment slots, with sliding blocks and support blocks connected diagonally at both ends of the connecting plates, the sliding blocks being slidably connected to the adjustment slots, the support blocks being used to connect to the expansion plates, and a guide slot for accommodating the support blocks being provided on the fixed platform; a control assembly detachably connected to the rotating shaft; the control assembly, in use, drives the rotating shaft to rotate to adjust the outer diameter of the positioning post; and a fixing assembly connected to the rotating shaft, in use, restricting the rotation of the rotating shaft.

[0009] Preferably, the control component includes a connecting rod with a protrusion at one end, the protrusion being detachably connected to a groove on the rotating shaft; and an adjusting handwheel connected to the other end of the connecting rod.

[0010] Preferably, the fixing assembly includes a rotating ring connected to the outside of the rotating shaft, and a groove for accommodating the rotating ring is provided on the fixing platform; a limiting ring arranged parallel to the rotating ring, the limiting ring being sleeved on the outside of the rotating shaft and slidably connected to the fixing platform; a limiting bolt passing through a through hole on the rotating ring and threadedly connected to the limiting ring; and a guide rod arranged parallel to the limiting bolt, one end of which is connected to the rotating ring.

[0011] Preferably, the fixed platform has a receiving groove for connecting a scale.

[0012] Preferably, the clamping assembly includes a telescopic device, of which a plurality of telescopic devices are evenly distributed at equal intervals and connected to a fixed platform; a mounting plate, which is connected to the telescopic end of the telescopic device; and a clamping plate, which is detachably connected to the mounting plate.

[0013] Preferably, multiple dovetail blocks arranged side by side are connected to the side wall of the clamping plate, and the dovetail blocks are slidably connected to the dovetail grooves opened on the mounting plate.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] In this invention, the positioning component positions and restricts the compressor housing in use to facilitate subsequent fixing and clamping. The expansion component in the positioning component can expand outward to increase the diameter of the positioning component during use, thereby adapting to compressor housings of various sizes. The holding component moves towards the positioning component in use to clamp and fix the workpiece sleeved on the outside of the positioning component. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view;

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A;

[0019] Figure 4 This is a schematic diagram of the expansion plate structure.

[0020] Reference numerals: 1. Fixed platform; 2. Positioning column; 3. Pressing cover; 4. Rotating shaft; 5. Driving gear; 6. Fixed shaft; 7. Driven gear; 8. Adjusting groove; 9. Expansion plate; 10. Connecting plate; 11. Sliding block; 12. Support block; 13. Guide groove; 14. Connecting rod; 15. Adjusting handwheel; 16. Rotating ring; 17. Limiting ring; 18. Limiting bolt; 19. Guide rod; 20. Receiving groove; 21. Scale; 22. Telescopic device; 23. Mounting plate; 24. Clamping plate; 25. Dovetail block; 26. Dovetail groove. Detailed Implementation

[0021] Example 1

[0022] like Figure 1-Figure 4 As shown, this utility model proposes a special fixture for milling automotive parts, including a fixed table 1, a positioning component, and a clamping component. The middle position of the upper end face of the fixed table 1 is used to connect the positioning component. In use, the positioning component positions and restricts the compressor housing to facilitate subsequent fixing and clamping. The expansion component in the positioning component can expand outward to increase the diameter of the positioning component, thereby adapting to compressor housings of various sizes. The outer side of the fixed table 1 is used to connect clamping components distributed circumferentially with the central axis of the positioning component as the center. In use, the clamping component moves towards the positioning component to clamp and fix the workpiece sleeved on the outer side of the positioning component. The lower end face of the fixed table 1 is used to connect multiple pads, which support a certain space under the fixed table 1 to accommodate the expansion component.

[0023] Example 2

[0024] like Figures 2-4As shown, this utility model proposes a special fixture for milling automotive parts. Compared with Embodiment 1, this embodiment describes the detailed structure of the positioning component. The positioning component includes a positioning post 2, a clamping cover 3, and an expansion component. The positioning post 2 is connected to the middle position of the upper end face of the fixed table 1. A threaded hole is opened on the upper end face of the positioning post 2. A threaded post is connected to the lower end face of the clamping cover 3. The threaded post is threadedly connected to the threaded hole. The expansion component is sleeved on the outside of the positioning post 2 and is connected to the upper end face of the fixed table 1. When the expansion component is in use, the expansion component increases or expands the outer diameter of the positioning post 2 to accommodate workpieces of different sizes.

[0025] The expansion assembly includes a rotating shaft 4, a driving gear 5, a fixed shaft 6, a driven gear 7, an expansion plate 9, a connecting plate 10, a control assembly, and a fixing assembly. One end of the rotating shaft 4 is rotatably connected to a through hole in the fixed platform 1, and the other end of the rotating shaft 4 passes through the fixed platform 1 and is connected to the driving gear 5. The control assembly is detachably connected to the rotating shaft 4. In use, the control assembly drives the rotating shaft 4 to rotate to adjust the outer diameter of the positioning post 2. The fixed shaft 6 is located on the lower end face of the fixed platform 1, with the fixed shaft 6 and the positioning post 2 having the same center. The driven gear 7 is connected to the outside of the fixed shaft 6 and is connected to the driving gear 5. The driven gear 5 is engaged in a transmission connection. The fixed platform 1 has multiple equally spaced guide grooves 13. The support block 12 is slidably connected in the guide grooves 13. The two ends of the support block 12 are connected to the expansion plate 9 and the connecting plate 10, respectively. One side wall of the connecting plate 10 is used to connect with the sliding block 11. The sliding block 11 is slidably connected in multiple circumferentially distributed arc-shaped adjustment grooves 8 on the driven gear 7. The fixed component is connected to the rotating shaft 4. In the initial state, the fixed component rotates synchronously with the rotating shaft 4. In the use state, the fixed component is slidably connected to the fixed platform 1 to restrict the rotation of the rotating shaft 4.

[0026] The control assembly includes a connecting rod 14 and an adjusting handwheel 15. The adjusting handwheel 15 is connected to one end of the connecting rod 14, and the other end of the connecting rod 14 is connected to a protrusion. The protrusion and the groove are detachably connected. The connecting rod 14 can drive the rotating shaft 4 to rotate by interlocking the protrusion and the groove on the rotating shaft 4. At the same time, it can be freely disassembled to prevent interference with the expansion plate 9.

[0027] The fixing assembly includes a rotating ring 16, a limiting ring 17, a limiting bolt 18, and a guide rod 19. The rotating ring 16 is connected to the outside of the rotating shaft 4. The limiting ring 17 is located below the rotating ring 16 and is arranged parallel to the rotating ring 16. The lower end face of the rotating ring 16 is connected to the circumferentially distributed guide rod 19. The guide rod 19 is slidably connected to the through hole opened on the limiting ring 17. The limiting bolt 18 passes through the through hole on the rotating ring 16 and is threadedly connected to the limiting ring 17.

[0028] In an optional embodiment, the fixed platform 1 is provided with a receiving groove 20, which is used to connect a scale 21; the scale 21 facilitates observation of the current outer diameter of the expansion plate 9 and facilitates subsequent adjustments.

[0029] Example 3

[0030] like Figure 1 As shown, this utility model proposes a special fixture for milling automotive parts. Compared with Embodiment 2, this embodiment describes the detailed structure of the clamping assembly. The clamping assembly includes a telescopic device 22, a mounting plate 23, and a clamping plate 24. Multiple telescopic devices 22 are evenly distributed and connected to the upper surface of the fixed table 1. The telescopic device 22 is selected from, but is not limited to, a hydraulic cylinder. The telescopic end of the telescopic device 22 is used to connect with the mounting plate 23, and the clamping plate 24 is detachably connected to the mounting plate 23.

[0031] In an optional embodiment, a plurality of dovetail blocks 25 arranged side by side are connected to the side wall of the clamping plate 24, and the dovetail blocks 25 are slidably connected to the dovetail grooves 26 opened on the mounting plate 23; the clamping plate 24 can be moved vertically to disengage from the mounting plate 23, which facilitates the replacement of the clamping plate 24 with compressor housings of different shapes.

[0032] In summary, when using this utility model, the compressor housing to be processed is placed on the fixed platform 1. The positioning pin 2 and the expansion plate 9 are passed through the through hole on the compressor housing. Then, the threaded pin below the clamping cover 3 is inserted into the threaded hole to restrict the vertical movement of the compressor housing. The clamping cover 3 can also be replaced according to the shape of different compressor housings. The expansion plate 9 is adjusted according to the size of different through holes. The protrusion on the connecting rod 14 is inserted into the groove at the top of the rotating shaft 4. By rotating the adjusting handwheel 15, the connecting rod 14 is driven, thereby driving the protrusion and the rotating shaft 4 to rotate. The driving gear 5 on the rotating shaft 4 rotates, driving the driven gear 7 on the fixed shaft 6 to rotate. The rotation of the driven gear 7 causes its adjustment groove 8 to rotate. The sliding block 11 slides along the adjusting groove 8. Driven by the connecting plate 10, the support block 12 moves linearly along the guide groove 13 opened on the fixed platform 1. The expansion plate 9 thus moves away from the central axis of the positioning column 2, thereby increasing the outer diameter of the positioning column 2, which facilitates positioning of compressor housings of more sizes. The operator starts the telescopic device 22. The telescopic end of the telescopic device 22 drives the mounting plate 23 and the clamping plate 24 to move. The clamping plate 24 clamps and fixes the compressor housing that has been positioned. Depending on the shape of different compressor housings, the clamping plate 24 can be moved upward to disengage it from the mounting plate 23. Changing the clamping plate 24 to a different shape can achieve a better clamping effect.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A special fixture for milling surfaces of automotive parts, characterized in that, include A fixed platform (1) is connected to a number of pads below it; A positioning component is connected to a fixed table (1); the positioning component adjusts its own size to position the workpiece when in use; The clamping components are evenly distributed in multiples and are connected to the fixed platform (1). When in use, the clamping components move towards the positioning components to clamp the workpiece.

2. The special fixture for milling automotive parts according to claim 1, characterized in that, Positioning components include The positioning post (2) is connected to the fixed platform (1), and the positioning post (2) has a threaded hole. The pressure cap (3) has a threaded post connected to its lower part, and the threaded post and the threaded hole are detachably connected; An expansion assembly is connected to a fixed platform (1); when the expansion assembly is in use, the outer diameter of the positioning column (2) is increased to accommodate different workpieces.

3. A special fixture for milling automotive parts according to claim 2, characterized in that, Expansion components include A rotating shaft (4) is rotatably connected at one end to a through hole opened on a fixed platform (1), and the other end of the rotating shaft (4) passes through the fixed platform (1). The driving gear (5) is connected to the rotating shaft (4); A fixed shaft (6) is set parallel to the rotating shaft (4), and the fixed shaft (6) is rotatably connected to the fixed platform (1); Driven gear (7) is connected to fixed shaft (6). Driven gear (7) meshes with driving gear (5) for transmission. Multiple circumferentially distributed adjustment grooves (8) are provided on driven gear (7). The expansion plate (9) has multiple circumferentially distributed and is sleeved on the outside of the positioning post (2); The number of connecting plates (10) corresponds to the number of adjusting grooves (8). The two ends of the connecting plates (10) are respectively connected to sliding blocks (11) and support blocks (12). The sliding blocks (11) are slidably connected to the adjusting grooves (8). The support blocks (12) are used to connect with the expansion plates (9). The fixed platform (1) is provided with guide grooves (13) for accommodating the support blocks (12). The control component is detachably connected to the rotating shaft (4); when in use, the control component drives the rotating shaft (4) to rotate to adjust the outer diameter of the positioning column (2); A fixing component is connected to the rotating shaft (4), and the fixing component restricts the rotation of the rotating shaft (4) when in use.

4. A special fixture for milling automotive parts according to claim 3, characterized in that, Control components include The connecting rod (14) has a protrusion at one end, and the protrusion is detachably connected to the groove on the rotating shaft (4). Adjusting handwheel (15), which is connected to the other end of connecting rod (14).

5. A special fixture for milling automotive parts according to claim 3, characterized in that, Fixed components include A rotating ring (16) is connected to the outside of the rotating shaft (4), and a groove for accommodating the rotating ring (16) is provided on the fixed platform (1); A limiting ring (17) is set parallel to the rotating ring (16). The limiting ring (17) is sleeved on the outside of the rotating shaft (4). The limiting ring (17) is slidably connected to the fixed platform (1). The limiting bolt (18) passes through the through hole on the rotating ring (16) and is threadedly connected to the limiting ring (17); The guide rod (19) is set parallel to the limiting bolt (18), and one end of the guide rod (19) is connected to the rotating ring (16).

6. A special fixture for milling automotive parts according to claim 1, characterized in that, A receiving groove (20) is provided on the fixed platform (1), and the receiving groove (20) is used to connect the scale (21).

7. A special fixture for milling automotive parts according to claim 1, characterized in that, Clamping components include Telescopic devices (22) are evenly distributed in multiples and are connected to the fixed platform (1). Mounting plate (23), which is connected to the telescopic end of telescopic device (22); Clamping plate (24), which is detachably connected to mounting plate (23).

8. A special fixture for milling automotive parts according to claim 7, characterized in that, Multiple dovetail blocks (25) are connected to the side wall of the clamping plate (24), and the dovetail blocks (25) are slidably connected to the dovetail grooves (26) opened on the mounting plate (23).

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