Mechanical positioning tool for automobile part machining
By designing a mechanical positioning fixture that includes a fixed base, a tooling frame, a tilt adjustment mechanism, and a clamping frame, the problem of traditional tooling being unable to stably clamp bent sheet metal and automatically flip it has been solved, achieving automatic flipping and stable clamping, thus improving processing convenience and efficiency.
Patent Information
- Application Number
- CN202422488944.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-15
AI Technical Summary
Traditional positioning fixtures cannot easily and stably clamp bent sheet metal, and they do not have an automatic flipping function, resulting in cumbersome operation and lack of convenience.
A mechanical positioning fixture was designed, comprising a fixed base, a tooling frame, a tilt adjustment mechanism, a rotating frame, and a clamping frame. The fixture achieves automatic workpiece flipping and height adjustment through a motor and worm gear structure, and stable clamping is achieved by combining a clamping mechanism.
It achieves stable clamping and automatic flipping of bent sheet metal, simplifying processing operations and improving processing convenience and efficiency.
Smart Images
Figure CN223572875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical processing and production technology, and in particular to a mechanical positioning fixture for processing automotive parts. Background Technology
[0002] As the foundation of the automotive industry, auto parts are a necessary factor to support the continuous and healthy development of the automotive industry. In the production process of auto parts, grinding of some workpiece surfaces is a common process. During the grinding process, mechanical positioning fixtures are needed to position and clamp the workpiece to ensure that the grinding operation can be carried out smoothly.
[0003] Bending sheet metal is a common material in automotive parts. Due to its bending shape, the clamping heights at both ends of the sheet metal are different when it is flat. Traditional positioning fixtures do not have adjustment functions. Therefore, it is not convenient and stable to clamp and fix the two ends of the workpiece for this type of bending sheet metal. Moreover, traditional positioning fixtures do not have an automatic flipping function. After one side of the workpiece is ground and processed, the operator needs to disassemble the workpiece, flip it over, and re-clamp and fix it before the flipping and grinding operations can be performed. The operation process is cumbersome and lacks convenience. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a mechanical positioning fixture for the processing of automotive parts.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mechanical positioning fixture for processing automotive parts, comprising a fixed base, a fixture frame above the fixed base, and an tilt adjustment mechanism between the fixed base and the fixture frame. A fixed frame is fixedly connected to the top of the fixture frame, and a rotating frame is provided on one side of the fixed frame. A rotating shaft two, rotatably connected to the fixed frame, is fixedly connected to the rotating frame. A fixed groove two is provided inside the fixed frame. A worm gear two is nested and fixedly connected to the outer surface of the rotating shaft two and located within the fixed groove two. A worm gear two, meshing with the worm gear two, is rotatably connected within the fixed groove two. The fixed frame contains a motor 2 whose output end is fixedly connected to the bottom end of the worm gear 2. A clamping frame is provided on one side of the rotating frame, and a groove is provided on the outer surface of the rotating frame. A fixed screw is rotatably connected in the groove. A motor 3 whose output end is fixedly connected to the top end of the fixed screw is provided at the top of the rotating frame. A screw block is threaded onto the outer surface of the fixed screw. The screw block is fixedly connected to the clamping frame. A clamping recess is provided on the clamping frame, and a clamping mechanism is provided on the clamping frame. The workpiece body is provided in the clamping recess. The fixed frame, rotating frame, and clamping frame structures are provided in two sets and are located on both sides of the tooling table.
[0006] As a further description of the above technical solution:
[0007] The tilt adjustment mechanism includes a fixed recess on the top of the fixed base, a rotating block that nests with the fixed recess is fixedly connected to the bottom of the tooling frame, a rotating shaft that is rotatably connected to the inner wall of the fixed recess is fixedly connected to the rotating block, a fixed groove is provided in the fixed base, a worm gear is nested and fixedly connected to the outer surface of the rotating shaft and located in the fixed groove, a worm is rotatably connected to the fixed groove and meshes with the worm gear, and a motor whose output end is fixedly connected to one end of the worm is provided in the fixed base.
[0008] As a further description of the above technical solution:
[0009] The rotating shaft is positioned and installed with the fixed frame via bearings.
[0010] As a further description of the above technical solution:
[0011] The fixing screw is positioned and installed at the contact point with the inner wall of the groove by a bearing, and the screw block and the groove are configured for a nested sliding fit.
[0012] As a further description of the above technical solution:
[0013] The clamping mechanism includes a threaded groove on the clamping frame and a clamping plate in the clamping recess. The top of the clamping plate is rotatably connected to an adjusting screw that is threaded to the threaded groove. The top of the adjusting screw is fixedly connected to a rotating wheel, and the rotating wheel is provided with a handle.
[0014] As a further description of the above technical solution:
[0015] The handle is located at the top of the wheel, away from the center.
[0016] This utility model has the following beneficial effects:
[0017] This mechanical positioning fixture for automotive parts processing, through the arrangement of a fixed base, fixture frame, fixed frame, rotating frame, and clamping frame, can be combined to form a stable mechanical positioning fixture. It can stably clamp and fix the workpiece, facilitating surface grinding operations. The design of the motor, fixed screw, and screw block allows for easy adjustment of the height of the clamping frames on both sides, enabling stable clamping and fixing of bent sheet metal at both ends. This avoids the problem of traditional fixtures being inconvenient for clamping bent sheet metal, enhancing the practicality of the entire fixture structure. The motor and worm gear... II. The worm gear and rotating shaft structure allows for adjustment to drive the rotating frame, enabling the workpiece to tilt and flip, facilitating grinding operations on the workpiece's sides and sides. The structure is simple to operate, eliminating the need for manual disassembly and clamping of the workpiece after flipping, greatly improving the convenience of the flipping operation. The tilt adjustment mechanism allows for easy tilt adjustment of the tooling table, adjusting the tilt position of the bent portion of the workpiece to a flat state, thus facilitating grinding operations at the bent area. The entire structure is stable, simple to operate, and flexible to use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of a mechanical positioning fixture for processing automotive parts proposed in this utility model.
[0019] Figure 2 This is a front view of a mechanical positioning fixture for processing automotive parts proposed in this utility model.
[0020] Figure 3 This is a side view of the worm gear 2 and worm shaft 2 structure of a mechanical positioning fixture for processing automotive parts proposed in this utility model.
[0021] Legend:
[0022] 1. Fixed base; 2. Tooling stand; 3. Fixed recess; 4. Rotating block; 5. Rotating shaft one; 6. Fixed groove one; 7. Worm gear one; 8. Worm one; 9. Motor one; 10. Fixed frame; 11. Rotating frame; 12. Rotating shaft two; 13. Fixed groove two; 14. Worm gear two; 15. Worm two; 16. Motor two; 17. Clamping frame; 18. Groove; 19. Fixed screw; 20. Motor three; 21. Screw block; 22. Clamping recess; 23. Clamping plate; 24. Threaded groove; 25. Adjusting screw; 26. Rotary wheel; 27. Handle; 28. Workpiece body. Detailed Implementation
[0023] 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.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0025] Reference Figure 1-3This utility model provides an embodiment of a mechanical positioning fixture for processing automotive parts, including a fixed base 1, a fixture frame 2 above the fixed base 1, and a tilt adjustment mechanism between the fixed base 1 and the fixture frame 2. The tilt adjustment mechanism can drive the fixture frame 2 to tilt, facilitating the rotation adjustment of the tilted portion of the workpiece to a horizontal position for easier processing. A fixed frame 10 is fixedly connected to the top of the fixture frame 2, and a rotating frame 11 is provided on one side of the fixed frame 10. A rotating shaft 12, rotatably connected to the fixed frame 10, is fixedly connected to the rotating frame 11. The rotating shaft 12 and the fixed frame 10 are positioned and secured by bearings. The mounting bracket 10 has a fixing groove 13. A worm gear 14 is nested and fixedly connected to the outer surface of the rotating shaft 12 within the fixing groove 13. A worm 15, meshing with the worm gear 14, is rotatably connected within the fixing groove 13. A motor 16, with its output end fixedly connected to the bottom end of the worm 15, is located within the mounting bracket 10. The motor 16 drives the worm 15 to rotate, which in turn drives the worm gear 14 to rotate. The worm gear 14 then drives the rotating shaft 12 to rotate, thereby rotating the rotating bracket 11. This structure allows the workpiece to tilt or flip automatically, eliminating the need for manual disassembly and flipping, greatly improving the ease of operation. A clamping frame 17 is provided on one side of the rotating frame 11, and a groove 18 is provided on the outer surface of the rotating frame 11. A fixing screw 19 is rotatably connected in the groove 18. A motor 20 is provided at the top of the rotating frame 11, and its output end is fixedly connected to the top of the fixing screw 19. A screw block 21 is threaded onto the outer surface of the fixing screw 19. The screw block 21 is fixedly connected to the clamping frame 17. The contact position between the fixing screw 19 and the inner wall of the groove 18 is positioned by a bearing. The screw block 21 and the groove 18 are nested and slidingly fitted. The motor 20 drives the fixing screw 19 to rotate, and the fixing screw 19 drives the screw block 21 to rise and fall. The screw block 21 can then drive the clamping frame 17 to rise and fall. This allows for adjustment of the clamping position and facilitates handling of various situations. The bent sheet metal is stably clamped and fixed. The clamping frame 17 is provided with a clamping recess 22 and a clamping mechanism. The clamping mechanism can cooperate with the clamping recess 22 to stably clamp and fix the workpiece. The workpiece body 28 is placed in the clamping recess 22. The fixed frame 10, rotating frame 11 and clamping frame 17 are arranged in two sets and located on both sides of the tooling table 2. The arrangement of the two sets of structures can facilitate the stable clamping and fixing of both ends of the workpiece. The worm gear 14 and worm 15 are installed in one of the fixed frames 10. The motor components in the whole structure can be connected to the PLC control box in the accessory production equipment, which facilitates convenient and stable operation of the whole structure.
[0026] The tilt adjustment mechanism includes a fixed recess 3 on the top of the fixed base 1, a rotating block 4 that nests with the fixed recess 3 fixedly connected to the bottom of the tooling frame 2, a rotating shaft 5 that rotatably connects to the inner wall of the fixed recess 3 fixedly connected to the rotating block 4, the rotating shaft 5 being positioned at the contact point with the inner wall of the fixed recess 3 by a bearing, a fixed groove 6 provided in the fixed base 1, a worm gear 7 nested and fixedly connected to the outer surface of the rotating shaft 5 within the fixed groove 6, and a meshing device that engages with the worm gear 7 rotatably connected within the fixed groove 6. The worm gear 8 is connected to the fixed base 1, where a motor 9 is fixedly connected to one end of the worm gear 8. When running, the motor 9 is started, which drives the worm gear 8 to rotate. The worm gear 8 drives the worm wheel 7 to rotate, and the worm wheel 7 drives the rotating block 4 to rotate through the rotating shaft 5. The rotating block 4 can then drive the tooling frame 2 to rotate and tilt. The worm gear and worm wheel structure has a self-locking effect, which can ensure the stability of the positioning of the tooling frame 2 after tilting adjustment and prevent slippage or displacement, thereby ensuring the smoothness of workpiece processing.
[0027] The clamping mechanism includes a threaded groove 24 on the clamping frame 17 and a clamping plate 23 in the clamping recess 22. The top of the clamping plate 23 is rotatably connected to an adjusting screw 25 that is threaded to the threaded groove 24. The top of the adjusting screw 25 is fixedly connected to a rotating wheel 26. A handle 27 is provided on the rotating wheel 26. The handle 27 is located at the top of the rotating wheel 26 away from the center. During operation, the handle 27 is grasped and rotated around the center of the rotating wheel 26, which drives the adjusting screw 25 to rotate. The adjusting screw 25, in conjunction with the threaded groove 24, can drive the clamping plate 23 to descend. The clamping plate 23, in conjunction with the clamping recess 22, can squeeze and fix the workpiece, thus completing the workpiece clamping and fixing work.
[0028] Working principle: When using the mechanical positioning fixture for automotive parts processing, start motor 3 20. Motor 3 20 drives the fixed screw 19 to rotate, which in turn drives the screw block 21 to rise and fall. The screw block 21, in turn, drives the clamping frame 17 to rise and fall. After adjusting the position and height of the clamping frames 17 on both sides, insert both ends of the workpiece body 28 into the two clamping recesses 22 and clamp them in place with the clamping mechanism. This facilitates grinding and other processing operations on the top of the workpiece. After grinding the top, start motor 2 16. 16 drives the second worm gear 15 to rotate, which in turn drives the second worm wheel 14 to rotate. The second worm wheel 14 then drives the second rotating shaft 12 to rotate, which in turn drives the rotating frame 11 to rotate. The rotating frame 11 then drives the clamping frame 17 to rotate, which in turn drives the workpiece body 28 to automatically flip over, facilitating the flipping and grinding operation. The tilt adjustment mechanism can tilt the tooling table 2, thereby adjusting the tilt position of the bent part on the workpiece to a flat state, thus facilitating the processing operation of the bent position.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A mechanical positioning fixture for machining automotive parts, comprising a fixed base (1), characterized in that: A tooling frame (2) is provided above the fixed base (1), and an tilt adjustment mechanism is provided between the fixed base (1) and the tooling frame (2). A fixed frame (10) is fixedly connected to the top of the tooling frame (2). A rotating frame (11) is provided on one side of the fixed frame (10). A rotating shaft (12) that is rotatably connected to the rotating frame (11) is fixedly connected to the rotating frame (10). A fixed groove (13) is provided inside the fixed frame (10). A worm gear (14) is nested and fixedly connected to the outer surface of the rotating shaft (12) and located inside the fixed groove (13). A worm (15) that meshes with the worm gear (14) is rotatably connected inside the fixed groove (13). A motor (16) whose output end is fixedly connected to the bottom end of the worm (15) is provided inside the fixed frame (10). The rotating frame (11) has a clamping frame (17) on one side, and the outer surface of the rotating frame (11) has a groove (18). A fixing screw (19) is rotatably connected in the groove (18). The top of the rotating frame (11) has a motor (20) whose output end is fixedly connected to the top of the fixing screw (19). The outer surface of the fixing screw (19) is threaded with a screw block (21). The screw block (21) is fixedly connected to the clamping frame (17). The clamping frame (17) has a clamping recess (22) and a clamping mechanism. The clamping recess (22) has a workpiece body (28). The fixing frame (10), rotating frame (11), and clamping frame (17) are arranged in two sets and located on both sides of the tooling table (2).
2. The mechanical positioning fixture for machining automotive parts according to claim 1, characterized in that: The tilt adjustment mechanism includes a fixed recess (3) set on the top of the fixed base (1), a rotating block (4) that is nested and fitted with the fixed recess (3) is fixedly connected to the bottom of the tooling frame (2), a rotating shaft (5) that is rotatably connected to the inner wall of the fixed recess (3) is fixedly connected to the rotating block (4), a fixed groove (6) is provided in the fixed base (1), a worm gear (7) is nested and fixedly connected to the outer surface of the rotating shaft (5) and located in the fixed groove (6), a worm (8) that meshes with the worm gear (7) is rotatably connected in the fixed groove (6), and a motor (9) whose output end is fixedly connected to one end of the worm (8) is provided in the fixed base (1).
3. The mechanical positioning fixture for processing automotive parts according to claim 1, characterized in that: The rotating shaft (12) and the fixed frame (10) are positioned and installed by bearings.
4. The mechanical positioning fixture for machining automotive parts according to claim 1, characterized in that: The fixing screw (19) is positioned and installed at the contact position with the inner wall of the groove (18) by a bearing, and the screw block (21) and the groove (18) are nested and slidingly fitted.
5. A mechanical positioning fixture for machining automotive parts according to claim 1, characterized in that: The clamping mechanism includes a threaded groove (24) on the clamping frame (17) and a clamping plate (23) in the clamping recess (22). The top of the clamping plate (23) is rotatably connected to an adjusting screw (25) threadedly connected to the threaded groove (24). The top of the adjusting screw (25) is fixedly connected to a rotating wheel (26), and a handle (27) is provided on the rotating wheel (26).
6. A mechanical positioning fixture for machining automotive parts according to claim 5, characterized in that: The handle (27) is located at the top of the wheel (26) away from the center.