A precision clamping tool for an automobile product

Abstract

The utility model discloses a kind of precision clamping tool of automobile product, belong to the field of automobile product manufacturing.The tool aims to solve the problem of tool installation and jaw replacement cumbersome, low efficiency in prior art.The tool includes workbench and clamping mechanism, clamping mechanism is detachably installed in workbench top, and including bottom plate, symmetrically arranged sliding plate and the jaw connected to sliding plate.It is characterized in that, clamping mechanism is also provided with pneumatic cylinder, rotating plate and driving rod, pneumatic cylinder drives one of sliding plate to slide, rotating plate is pivotally arranged on bottom plate, and two sliding plates are connected to rotating plate opposite two ends by driving rod linkage connection.The utility model realizes the tool overall tool-free quick installation and disassembly by fixed mounting mechanism, realizes the quick replacement of jaw by quick replacement assembly, realizes the precision synchronous clamping of jaw by pneumatic cylinder driving connecting rod mechanism, significantly improves production efficiency, degree of flexibility and clamping accuracy.

Description

Technical Field

[0001] This utility model relates to the field of automobile product manufacturing, and in particular to a precision clamping fixture for automobile products. Background Technology

[0002] In the manufacturing process of modern automobiles, the precision requirements for the machining and assembly of parts are constantly increasing. To ensure production efficiency and product quality, various clamping fixtures are typically used to position and fix the workpieces. However, automobiles come in a wide variety of types, sizes, and shapes, often requiring the machining or assembly of multiple different models on a single production line. This means that clamping fixtures must possess a certain degree of flexibility to quickly adapt to different production tasks.

[0003] Traditional clamping fixtures are typically secured using mechanical fasteners such as bolts and nuts when installed on the production line workbench or when changing clamping components. While reliable, this method requires operators to tighten or loosen multiple bolts with tools each time a fixture is changed or replaced. This is not only cumbersome and time-consuming, but also prone to fatigue under tight production schedules, potentially affecting installation accuracy and safety. Especially in the high-volume, rapid-response production of automotive products, this inefficient installation and changeover method severely restricts the overall efficiency and flexibility of the production line. Therefore, current technology lacks a solution that can simultaneously achieve rapid installation of the entire clamping fixture and rapid replacement of clamping components.

[0004] Therefore, this utility model proposes a precision clamping fixture for automotive products to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems existing in the precision clamping tooling for automotive products, such as the reliance on mechanical fasteners for tooling installation and disassembly, cumbersome operation, time and labor consumption, low efficiency in changing different specifications of grippers, and inability to meet the rapid response requirements of flexible production, this utility model aims to provide a precision clamping tooling for automotive products with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a precision clamping fixture for automotive products, including: a worktable; and a clamping mechanism detachably mounted on the top of the worktable. The clamping mechanism includes a base plate, two symmetrically arranged sliding plates, and grippers respectively connected to the two sliding plates.

[0007] The clamping mechanism includes a pneumatic cylinder, a rotating plate, and a drive rod. The pneumatic cylinder drives one of the sliding plates to slide. The rotating plate is pivotally mounted on the base plate. The two sliding plates are linked to the opposite ends of the rotating plate via the drive rod to achieve synchronous relative movement. The tooling also includes a fixed mounting mechanism, which includes a mounting block fixed to the worktable and a locking rod connected to the base plate. A rotating block is rotatably connected to the mounting block via a fixed shaft. The rotating block is used to clamp or release the locking rod that enters the mounting block.

[0008] Furthermore, the sliding plate and grippers of the clamping mechanism are connected via a quick-change assembly, enabling rapid gripper replacement. The base plate of the clamping mechanism is quickly connected and locked to the worktable via a fixed mounting mechanism. The pneumatically driven sliding plate is linked to a rotating plate via a drive rod, and the rotating plate in turn drives another drive rod to drive another sliding plate, thereby achieving synchronous opening and closing movements of the two grippers.

[0009] Preferably, the fixed installation mechanism further includes an operating block, which is driven and connected to the rotating block to drive the rotating block to rotate and release the locking lever.

[0010] Preferably, a connecting plate is fixed to the bottom of the base plate, and the locking rod is connected to the connecting plate to form a locking assembly.

[0011] Preferably, the grippers are detachably connected to the sliding plate via a quick-change component.

[0012] Preferably, the quick-change component includes a sliding rod connected to the gripper, and a locking block and a spring disposed on the sliding plate; the locking block is driven by the spring force to engage with the sliding rod.

[0013] Preferably, the quick-change component also includes a guide rail plate and a connecting block; the sliding rod slides along the guide rail plate and drives the locking block to move through the connecting block.

[0014] Preferably, the clamping mechanism further includes two fixed plates fixed to the base plate, a connecting rod connecting the two fixed plates, and a sliding plate slidably connected to the connecting rod.

[0015] Preferably, the clamping mechanism further includes a mounting plate, which is fixed between the fixed plates, and a pneumatic cylinder is disposed inside the mounting plate.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem that the installation and disassembly of the tooling in the prior art usually relies on bolt fastening, which is cumbersome, time-consuming and labor-intensive. By setting up a fixed installation mechanism composed of components such as an installation block, a rotatable rotating block and a locking rod, the entire clamping tooling can be quickly installed and disassembled on the workbench without tools, which significantly improves the efficiency of production changeover.

[0018] 2. This utility model solves the problem in the prior art that changing grippers of different specifications requires tools and involves complicated steps, which cannot meet the needs of flexible production and rapid response by setting up a quick-change assembly composed of components such as sliding rods, springs and locking blocks. It achieves the technical effect of quick and convenient replacement of grippers, enabling the same tooling to flexibly adapt to the clamping needs of various products and enhancing the versatility of the equipment.

[0019] 3. This utility model, by using a pneumatic cylinder drive and in conjunction with a synchronous linkage mechanism consisting of a rotating plate and a driving rod, solves the problems of workpiece skewing or difficulty in controlling clamping force caused by asynchronous clamping in traditional clamping mechanisms. It achieves the technical effect of stable, centered, and controllable clamping force for the workpiece, ensuring processing positioning accuracy and avoiding damage to the workpiece. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a precision clamping fixture for automotive products proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the worktable of a precision clamping fixture for automotive products proposed in this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0024] Legend:

[0025] 1. Workbench;

[0026] 2. Clamping mechanism; 21. Base plate; 22. Fixing plate; 23. Connecting rod; 24. Mounting plate; 25. Pneumatic cylinder; 26. Sliding plate; 27. Gripper; 28. Rotating plate; 29. ​​Drive rod;

[0027] 3. Fixed installation mechanism; 31. Mounting block; 32. Fixed shaft; 33. Rotating block; 34. Operating block;

[0028] 35. Locking assembly; 351. Locking rod; 352. Connecting plate;

[0029] 4. Quick component replacement; 41. Sliding rod; 42. Connecting block; 43. Spring; 44. Guide rail plate; 45. Locking block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Example:

[0032] Please refer to Figures 1 to 4 This utility model provides a precision clamping fixture for automotive products, which aims to solve the problems of cumbersome operation and low efficiency in the process of installing the clamping fixture onto the worktable 1 and changing the gripper 27 in the prior art.

[0033] like Figure 1 and Figure 2 As shown, the precision clamping fixture for the automotive product includes a worktable 1 and a clamping mechanism 2 detachably mounted on the top of the worktable 1. The clamping mechanism 2 is used to clamp and fix the automotive product. The fixture also includes a fixed mounting mechanism 3 for mounting the clamping mechanism 2 to the worktable 1, and a quick-change assembly 4 for changing the gripper 27.

[0034] The clamping mechanism 2 includes a base plate 21 serving as the mounting base. Two fixed plates 22 are fixedly connected to the top of the base plate 21, and the two fixed plates 22 are connected by a connecting rod 23. The clamping mechanism 2 also includes two symmetrically arranged sliding plates 26, which are slidably connected to the connecting rod 23. Each sliding plate 26 has a gripper 27 connected to its top for direct contact with the workpiece. The clamping mechanism 2 also includes a transmission assembly and a power assembly for driving the two sliding plates 26 to move synchronously. The power assembly includes a mounting plate 24 and a pneumatic cylinder 25 disposed inside the mounting plate 24. The mounting plate 24 is fixedly connected between the two fixed plates 22. The transmission assembly includes a rotating plate 28 pivotally disposed on the base plate 21 and two driving rods 29. One end of each driving rod 29 is rotatably connected to the opposite ends of the rotating plate 28, and the other end is rotatably connected to the two sliding plates 26.

[0035] like Figure 2 and Figure 3As shown, the fixed installation mechanism 3 includes a mounting block 31 fixedly connected to the bottom of the workbench 1. A rotating block 33 is rotatably connected to the mounting block 31 via a fixed shaft 32. An operating block 34 is connected to the rotating block 33. The locking assembly 35, which works in cooperation with the fixed installation mechanism 3, is provided at the bottom of the base plate 21. The locking assembly 35 includes a connecting plate 352 fixedly connected to the bottom of the base plate 21, and a locking rod 351 connected to the connecting plate 352.

[0036] like Figure 2 and Figure 4 As shown, the quick-change assembly 4 includes a sliding rod 41 connected to the bottom of the gripper 27, and a series of mating structures disposed on the sliding plate 26. These mating structures include a guide plate 44 for guiding the sliding rod 41, a connecting block 42, a spring 43, and a locking block 45.

[0037] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is to set up a quick assembly and disassembly structure consisting of a fixed installation mechanism 3 and a locking component 35, and cooperate with a synchronous clamping linkage mechanism driven by a pneumatic cylinder 25 to realize the rapid deployment and precision operation of the entire tooling.

[0038] Please refer to the following carefully. Figure 2 and Figure 3 The following is a detailed description of the quick-assembly and disassembly structure: The mounting block 31 of the fixed mounting mechanism 3 is fixedly connected to the top of the workbench 1. The mounting block 31 has a circular groove inside for accommodating the locking rod 351. The rotating block 33 is rotatably connected to the mounting block 31 via the fixed shaft 32, and a part of the rotating block 33 can rotatably extend into or out of the circular groove. The operating block 34 is fixedly connected to the outside of the rotating block 33 to provide a lever arm for manual operation. At the same time, a connecting plate 352 is fixedly connected to the bottom of the base plate 21 of the clamping mechanism 2, and the locking rod 351 extends downward and is connected to the connecting plate 352. During installation, the base plate 21 is placed on the workbench 1, and the locking rod 351 is inserted downward into the circular groove of the mounting block 31. The tapered end of the locking rod 351 first pushes the rotating block 33 to rotate outward. When the locking rod 351 is fully inserted into the circular groove, the rotating block 33 rotates inward under its own weight or the force of the spring 43 and locks the annular groove of the locking rod 351, thereby achieving quick locking. During disassembly, the operating block 34 is turned to drive the rotating block 33 to rotate in the opposite direction, which can release the locking rod 351. This structure allows the entire clamping mechanism 2 to be quickly installed or disassembled on the workbench 1 without any tools.

[0039] Please refer to the following carefully. Figure 1 and Figure 2The following is a detailed description of the synchronous clamping linkage mechanism: A pneumatic cylinder 25, serving as a power source, is installed inside the mounting plate 24. The output end of the pneumatic cylinder 25 is fixedly connected to one of the sliding plates 26. The center position of the rotating plate 28 is rotatably connected to the base plate 21. One end of each of the two driving rods 29 is rotatably connected to the symmetrical wings of the rotating plate 28, and the other end is rotatably connected to the two sliding plates 26. When the pneumatic cylinder 25 is working, the linear thrust or pull it generates drives one sliding plate 26 to slide along the connecting rod 23. This sliding plate 26 drives the rotating plate 28 to rotate around its central axis through the driving rod 29 connected to it. The rotation of the rotating plate 28, in turn, drives the other sliding plate 26 to slide linearly along the connecting rod 23 in the opposite direction but with synchronized displacement through the other driving rod 29. This linkage structure ensures that the two sliding plates 26 and the grippers 27 above them can achieve precise synchronous closing or expanding movements, thereby providing stable and centered precision clamping of the workpiece.

[0040] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0041] In a preferred embodiment, in order to provide stable and reliable sliding guidance for the sliding plate 26, two parallel fixed plates 22 are fixedly connected to the top of the base plate 21 of the clamping mechanism 2. The two fixed plates 22 are connected by two parallel connecting rods 23 to form a rectangular frame. The two sliding plates 26 are respectively slidably sleeved on the two connecting rods 23. In order to integrate the installation of the pneumatic cylinder 25, a mounting plate 24 is fixedly connected between the two fixed plates 22, and the pneumatic cylinder 25 is accommodated and fixed inside the mounting plate 24.

[0042] In a preferred embodiment, to make the structure of the locking assembly 35 more stable and easier to operate, a connecting plate 352 is fixedly connected to the bottom of the base plate 21, and the locking rod 351 passes through and is fixed to the connecting plate 352. In order to facilitate the unlocking operation of the rotating block 33, the fixed installation mechanism 3 also includes an operating block 34. The operating block 34 is fixedly connected to the outside of the rotating block 33 and extends to the side or bottom of the workbench 1 for easy manual operation.

[0043] In a preferred embodiment, to enable quick replacement of the gripper 27, the gripper 27 is detachably connected to the sliding plate 26 via the quick replacement assembly 4. Specifically, a sliding rod 41 is fixedly connected to the bottom of the gripper 27, and a guide rail plate 44 is provided on the top of the sliding plate 26. The sliding rod 41 is slidably engaged within the guide rail plate 44. A movable locking block 45 and a spring 43 are provided inside the sliding plate 26. The locking block 45 is linked to the sliding rod 41 via a connecting block 42. In the locked state, the spring 43 pushes the locking block 45 to engage with the corresponding slot of the sliding rod 41. During replacement, the movement of the sliding rod 41 drives the locking block 45 to overcome the elastic force of the spring 43 through the connecting block 42, thereby unlocking the device.

[0044] The working principle is as follows:

[0045] When the clamping mechanism 2 needs to be installed on the workbench 1, the base plate 21 of the clamping mechanism 2 is placed on the top of the workbench 1. The locking rod 351 at the bottom of the base plate 21 is then inserted downward into the circular groove of the mounting block 31. During the insertion process, the locking rod 351 first pushes the rotating block 33 to rotate outward around the fixed shaft 32. When the locking rod 351 is fully inserted into the circular groove, the rotating block 33 rotates inward under its own weight or the action of the preset elastic force, and finally locks the locking rod 351, thereby completing the quick fixed installation of the entire clamping mechanism 2. When disassembly is required, simply pull the operating block 34 outward. The operating block 34 drives the rotating block 33 to rotate in the opposite direction, which can release the locking rod 351 and thus easily remove the clamping mechanism 2.

[0046] When it is necessary to change the gripper 27 to accommodate different workpieces, press the locking block 45 on the sliding plate 26 inward. The locking block 45 moves inward and disengages from the locking of the sliding rod 41. At this time, the spring 43 rebounds, pushing the sliding rod 41 and the gripper 27 upward to remove the old gripper 27. When installing the new gripper 27, slide the sliding rod 41 at the bottom of the new gripper 27 downward along the guide plate 44. The sliding rod 41 drives the locking block 45 to move inward through the connecting block 42 and compresses the spring 43. When the sliding rod 41 slides into place, the locking block 45 is exactly aligned with the slot in the sliding plate 26. Under the elastic force of the spring 43, it pops outward and locks the sliding rod 41 again, thus completing the quick replacement of the gripper 27.

[0047] During clamping operations, the pneumatic cylinder 25 installed inside the mounting plate 24 is activated. The output end of the pneumatic cylinder 25 generates linear motion, which drives a sliding plate 26 connected to it to slide along the connecting rod 23. The sliding plate 26 drives the rotating plate 28 to rotate around its central pivot through the driving rod 29. The rotation of the rotating plate 28, in turn, drives the sliding plate 26 on the other side to slide synchronously and in opposite directions along the connecting rod 23 through another driving rod 29. The synchronous relative movement of the two sliding plates 26 ultimately drives the two grippers 27 to complete the synchronous clamping or expanding and releasing action on the workpiece.

Claims

1. A precision clamping fixture for automotive products, comprising: Workbench (1); The clamping mechanism (2) has a base plate (21) at its bottom. The clamping mechanism (2) is detachably mounted on the top of the workbench (1) via the base plate (21). The clamping mechanism (2) also includes two symmetrically arranged sliding plates (26), and each of the two sliding plates (26) is connected to a gripper (27). Its features are, The tooling also includes a fixed mounting mechanism (3), which includes a mounting block (31) fixed to the workbench (1). The bottom of the base plate (21) of the clamping mechanism (2) is connected to a locking assembly (35), which includes a downwardly extending locking rod (351). A circular groove for accommodating the locking rod (351) is provided in the mounting block (31). A rotating block (33) is rotatably connected to the mounting block (31) via a fixed shaft (32). The rotating block (33) can rotate on the fixed shaft (32) to clamp or release the locking rod (351).

2. The precision clamping fixture for automotive products according to claim 1, characterized in that, The fixed installation mechanism (3) also includes an operating block (34), which is linked to the rotating block (33) and is used to drive the rotating block (33) to rotate to release the locking rod (351).

3. The precision clamping fixture for automotive products according to claim 1, characterized in that, The locking assembly (35) further includes a connecting plate (352), which is fixed to the bottom of the base plate (21), and the locking rod (351) passes through the connecting plate (352).

4. The precision clamping fixture for automotive products according to claim 1, characterized in that, The gripper (27) is detachably connected to the sliding plate (26) via a quick-change assembly (4).

5. The precision clamping fixture for automotive products according to claim 4, characterized in that, The quick-change component (4) includes: A sliding rod (41) is connected to the bottom of the gripper (27); And a locking block (45) and a spring (43) disposed on the sliding plate (26); The locking block (45) is popped into the slot of the sliding rod (41) by the elastic force of the spring (43) to lock the gripper (27).

6. The precision clamping fixture for automotive products according to claim 5, characterized in that, The quick-change assembly (4) also includes a guide rail plate (44) and a connecting block (42). The sliding rod (41) slides along the guide rail plate (44) and drives the locking block (45) to move through the connecting block (42) to compress the spring (43).

7. The precision clamping fixture for automotive products according to claim 1, characterized in that, The clamping mechanism (2) further includes two fixed plates (22) disposed on the base plate (21), and a connecting rod (23) is connected between the two fixed plates (22). The sliding plate (26) is slidably connected to the connecting rod (23).

8. The precision clamping fixture for automotive products according to claim 7, characterized in that, The clamping mechanism (2) further includes a mounting plate (24) and a pneumatic cylinder (25) disposed inside the mounting plate (24). The output end of the pneumatic cylinder (25) is connected to one of the sliding plates (26) for driving it to slide back and forth.

9. A precision clamping fixture for automotive products according to claim 8, characterized in that, The clamping mechanism (2) further includes a rotating plate (28) and a driving rod (29). The rotating plate (28) is pivotally mounted on the base plate (21). The two sliding plates (26) are linked to the opposite ends of the rotating plate (28) through the driving rod (29) to achieve synchronous relative movement of the two sliding plates (26).

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