Connecting rod positioning tool

Abstract

The utility model discloses a connecting rod positioning tool, which relates to the technical field of positioning tools, and comprises a bottom plate and a lifting platform arranged at the top of the bottom plate, a height adjusting component is arranged in a clamping cavity of the bottom plate and the lifting platform, vertical plates are fixed on the top walls of the two sides of the lifting platform, a clamping platform is arranged at the top of the lifting platform, and rotating shafts are fixed on the two side walls of the clamping platform. The rotating shafts are rotationally connected with the adjacent vertical plates, a clamping assembly is arranged on a table body of the clamping table, and an inclination adjusting assembly is arranged at the top of the bottom plate and used for driving the clamping table to achieve inclination angle adjustment. The rotating shafts are welded to the front side wall and the rear side wall of the clamping table used for positioning and fixing the connecting rod, the rotating shafts are connected with the vertical plate through the bearings, the adjusting plate and the fixing block can rotate relatively, and therefore when the adjusting plate descends, the clamping table can be driven to incline, and the connecting rod can be in an inclined placing posture; therefore, the machining or mounting requirements under the actual condition are met.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, specifically a connecting rod positioning tooling. Background Technology

[0002] Linkage positioning fixtures are specialized process equipment used in machining, assembly, and other production processes to precisely position and fix linkages (a common mechanical component typically used to transmit motion and power, such as engine linkages and robotic arm linkages). Their core function is to ensure that the linkage maintains the correct position and orientation during machining or assembly, thereby guaranteeing product quality, improving production efficiency, and reducing the difficulty of manual operation.

[0003] Chinese Patent Publication No. CN220719114U discloses a positioning fixture for machining automotive connecting rods. This fixture allows for adjustment of the vertical position and angle of automotive connecting rods without disassembly, improving machining efficiency. It includes a positioning plate, slide cylinders, a lifting plate, a lifting assembly, a sliding plate, a drive-sliding assembly, a fixed plate, a rotating plate, limiting components, and a drive-rotating assembly. Multiple slide cylinders are provided, fixedly connected to the positioning plate. Slide rods are slidably mounted on the slide cylinders. The lifting plate is fixedly connected to multiple slide rods. The lifting assembly is positioned between the positioning plate and the lifting plate. The sliding plate is slidably connected to the lifting plate. The drive-sliding assembly is mounted on the lifting plate. The fixed plate is fixedly connected to the lifting plate. Two rotating plates are provided, each rotatably mounted on the fixed plate and the sliding plate, respectively. Two limiting components are provided, each fixedly connected to one of the two rotating plates. The drive-rotating assembly is mounted on the rotating plate.

[0004] However, the linkage positioning fixture disclosed in the above patent still has certain shortcomings in practical applications. Although it can adjust the vertical position and angle of the linkage, it cannot tilt the linkage. In the actual processing or installation of the linkage, it is often necessary to tilt the linkage to meet the processing and installation requirements under different conditions. The positioning fixture disclosed in the above patent cannot meet this requirement. Utility Model Content

[0005] The purpose of this utility model is to provide a link positioning fixture to solve the problem mentioned in the background art that the existing link positioning fixtures cannot enable the link to be tilted.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a linkage positioning fixture, comprising a base plate and a lifting platform disposed on the top of the base plate, wherein a height adjustment component is disposed in the clamping cavity between the base plate and the lifting platform, vertical plates are fixed to both sides of the top wall of the lifting platform, a clamping platform is disposed on the top of the lifting platform, and rotating shafts are fixed to both sides of the clamping platform, the rotating shafts being rotatably connected to the adjacent vertical plates, a clamping component is disposed on the platform body of the clamping platform, and an tilt adjustment component is disposed on the top of the base plate for driving the clamping platform to achieve tilt angle adjustment.

[0007] Preferably, the height adjustment assembly includes an electric push rod fixedly installed on the top wall of the middle part of the base plate. The piston end of the electric push rod is fixedly connected to the bottom wall of the lifting platform. Hollow columns are fixedly installed at the four corners of the top wall of the base plate. Piston columns are slidably connected in the column body of the hollow columns. The top part of the piston column is fixedly connected to the bottom wall of the lifting platform.

[0008] Preferably, the clamping assembly includes a bidirectional lead screw and a guide rod respectively disposed in the inner cavities on both sides of the clamping platform. The two ends of the bidirectional lead screw are rotatably connected between the two side walls of the clamping platform via bearings. The two ends of the guide rod are fixedly connected between the two side walls of the clamping platform. One end of the bidirectional lead screw is connected to a first motor via a coupling.

[0009] Preferably, the top wall of the clamping platform has a through hole, and both ends of the bidirectional lead screw are screwed with movable seats. The other end of the movable seat is slidably connected to the surface of the guide rod. A connecting column that movably passes through the through hole cavity is fixedly installed on the top wall of the middle part of the movable seat. A clamping plate is fixedly installed at the top end of the connecting column. A rotating rod is installed through the plate of the clamping plate via a bearing. An arc-shaped clamping block is fixedly connected to the inner end of the rotating rod. A second motor is fixedly installed on the side wall of the clamping plate on one side. The output end of the second motor is connected to the end of the rotating rod.

[0010] Preferably, the tilt adjustment assembly includes an adjustment box fixedly installed on the bottom wall of one side of the lifting platform. A one-way lead screw is rotatably installed between the upper and lower side walls of the inner cavity of the adjustment box via bearings. A third motor is fixed to the bottom wall of the adjustment box. The output end of the third motor is connected to the bottom end of the one-way lead screw. A moving block is screwed onto the surface of the one-way lead screw.

[0011] Preferably, adjusting plates are fixedly installed on both sides of the top wall of the movable block. The plate body of the adjusting plate moves through the top wall of the adjusting box and the bottom wall of the lifting platform. Two symmetrically distributed fixing blocks are fixedly installed on one side of the bottom wall of the clamping platform. The fixing blocks are rotatably connected to the top plate of the adjacent adjusting plate by a pin.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model welds rotating shafts to both the front and rear side walls of the clamping platform used for positioning and fixing the connecting rod, and connects the rotating shafts to the vertical plate via bearings. This allows the clamping platform to be tilted. When it is necessary to adjust the tilt angle of the fixed connecting rod, the third motor can be started to drive the one-way lead screw to rotate. Under the limiting and guiding action of the adjusting plate, the moving block can descend along the one-way lead screw. Since the adjusting plate and the fixed block are connected by a pin, the adjusting plate and the fixed block can rotate relative to each other. Thus, when the adjusting plate descends, it can drive the clamping platform to tilt, so that the connecting rod is in a tilted position, thereby meeting the processing or installation requirements in actual situations.

[0014] 2. This utility model places the connecting rod between two arc-shaped clamping blocks, starts the first motor to drive the bidirectional lead screw to rotate, and under the action of the guide rod, the two moving seats move closer to each other, and under the action of the connecting column, the two clamping plates move closer to each other, so that the two arc-shaped clamping blocks can clamp and fix the connecting rod. When it is necessary to flip the connecting rod, the second motor can be started to drive the left rotating rod to rotate, thereby driving the connecting rod to flip and adjust. When it is necessary to adjust the height of the connecting rod, the electric push rod can be started to drive the lifting platform to move up and down. Under the guidance of the hollow column and piston column, the lifting platform can be raised and lowered smoothly, thereby adjusting the height of the connecting rod. Attached Figure Description

[0015] Figure 1 This is a first-view structural schematic diagram of a linkage positioning tool according to the present invention;

[0016] Figure 2 This is a partial cross-sectional view of the second perspective of a connecting rod positioning tool according to the present invention.

[0017] Figure 3 This is a third-view structural schematic diagram of a linkage positioning fixture according to the present invention.

[0018] Figure 4 This is a schematic cross-sectional view of the adjustment box structure of a connecting rod positioning tool according to this utility model.

[0019] In the diagram: 1. Base plate; 2. Lifting platform; 3. Hollow column; 4. Piston column; 5. Electric push rod; 6. Vertical plate; 7. Clamping platform; 8. Rotating shaft; 9. Through hole; 10. First motor; 11. Connecting column; 12. Clamping plate; 13. Arc-shaped clamping block; 14. Rotating rod; 15. Second motor; 16. Two-way lead screw; 17. Guide rod; 18. Moving seat; 19. Adjustment box; 20. Third motor; 21. Adjustment plate; 22. Fixed block; 23. Pin shaft; 24. One-way lead screw; 25. Moving block. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: a connecting rod positioning fixture, including a base plate 1 and a lifting platform 2 disposed on the top of the base plate 1. A height adjustment component is disposed in the clamping cavity between the base plate 1 and the lifting platform 2. Two vertical plates 6 are respectively welded to the front and rear top walls of the lifting platform 2. A clamping platform 7 is disposed on the top of the lifting platform 2. Two rotating shafts 8 are respectively welded to the front and rear side walls of the clamping platform 7. The rotating shafts 8 are rotatably connected to the adjacent vertical plates 6 via bearings. The clamping component is disposed on the platform body of the clamping platform 7 for clamping and fixing the connecting rod. The tilt adjustment component is disposed on the top of the base plate 1 for driving the clamping platform 7 to achieve tilt angle adjustment.

[0022] The height adjustment assembly includes an electric push rod 5 fixed to the top wall of the middle part of the base plate 1 by screws. The piston end of the electric push rod 5 is welded to the bottom wall of the lifting platform 2. Hollow columns 3 are welded at the four corners of the top wall of the base plate 1. Piston columns 4 are slidably connected in the column body of the hollow columns 3, that is, the piston columns 4 can move up and down along the hollow columns 3. The top part of the piston columns 4 is welded to the bottom wall of the lifting platform 2. The clamping assembly includes a bidirectional lead screw 16 and a guide rod 17 respectively disposed in the inner cavities on both sides of the clamping platform 7. The left and right ends of the bidirectional lead screw 16 are rotatably connected between the left and right side walls of the clamping platform 7 via bearings. The left and right ends of the guide rod 17 are respectively welded between the left and right side walls of the clamping platform 7. The first motor 10 is connected to the double A through hole 9 is formed on the top wall of the clamping platform 7 at the right end of the lead screw 16. Movable seats 18 are screwed onto the surfaces of both ends of the lead screw 16. The front end of the movable seat 18 is slidably connected to the surface of the guide rod 17. A connecting post 11 that moves through the cavity of the through hole 9 is welded to the top wall of the middle part of the movable seat 18. The clamping plate 12 is welded to the top end of the connecting post 11. The rotating rod 14 is mounted on the plate of the clamping plate 12 through a bearing. An arc-shaped clamping block 13 is welded to the inner end of the rotating rod 14. The end near the center of the clamping cavity of the two arc-shaped clamping blocks 13 is the inner end. The second motor 15 is fixed to the side wall of the clamping plate 12 on the left side by screws. The output end of the second motor 15 is connected to the end of the rotating rod 14 on the left side. The tilt adjustment assembly includes an adjustment box 19 welded to the bottom left wall of the lifting platform 2. A one-way lead screw 24 is rotatably mounted between the upper and lower side walls of the inner cavity of the adjustment box 19 via bearings. A third motor 20 is fixed to the bottom wall of the adjustment box 19. The output end of the third motor 20 is connected to the bottom end of the one-way lead screw 24. A moving block 25 is screwed onto the surface of the one-way lead screw 24. Adjustment plates 21 are welded to the top walls of both sides of the moving block 25. The plate body of the adjustment plate 21 moves through the top wall of the adjustment box 19 and the bottom wall of the lifting platform 2, so that the adjustment plate 21 can be raised and lowered. Two symmetrically distributed fixing blocks 22 are welded to the bottom left wall of the clamping platform 7. The fixing blocks 22 are rotatably connected to the top plate of the adjacent adjustment plate 21 via bearings via pins 23.

[0023] In use, the connecting rod is placed between two arc-shaped clamping blocks 13, and the first motor 10 is started to drive the bidirectional lead screw 16 to rotate. Under the action of the guide rod 17, the two moving seats 18 are brought closer to each other, and under the action of the connecting column 11, the two clamping plates 12 are brought closer to each other. Thus, the two arc-shaped clamping blocks 13 can clamp and fix the connecting rod. When it is necessary to flip the connecting rod, the second motor 15 can be started to drive the left rotating rod 14 to rotate, thereby driving the connecting rod to flip and adjust. When it is necessary to adjust the height of the connecting rod, the electric push rod 5 can be started to drive the lifting platform 2 to move up and down. Under the guidance of the hollow column 3 and the piston column 4, the lifting platform 2 can be raised and lowered smoothly, thereby adjusting the height of the connecting rod. By welding rotating shafts 8 to both the front and rear side walls of the clamping table 7 used for positioning and fixing the connecting rod, and connecting the rotating shafts 8 to the vertical plate 6 via bearings, the clamping table 7 can be tilted. When it is necessary to adjust the tilt angle of the fixed connecting rod, the third motor 20 can be started to drive the one-way lead screw 24 to rotate. Under the limiting and guiding action of the adjusting plate 21, the moving block 25 can descend along the one-way lead screw 24. Since the adjusting plate 21 and the fixed block 22 are connected by the pin 23, the adjusting plate 21 and the fixed block 22 can rotate relative to each other. Thus, when the adjusting plate 21 descends, it can drive the clamping table 7 to tilt, so that the connecting rod is in a tilted position, thereby meeting the processing or installation requirements under actual conditions.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A linkage positioning fixture, comprising a base plate (1) and a lifting platform (2) disposed on the top of the base plate (1), characterized in that: A height adjustment component is provided in the cavity between the base plate (1) and the lifting platform (2). Vertical plates (6) are fixed on both sides of the top wall of the lifting platform (2). A clamping platform (7) is provided on the top of the lifting platform (2). A rotating shaft (8) is fixed on both sides of the clamping platform (7). The rotating shaft (8) is rotatably connected to the adjacent vertical plate (6). A clamping component is provided on the platform body of the clamping platform (7). A tilt adjustment component is provided on the top of the base plate (1) to drive the clamping platform (7) to achieve tilt angle adjustment.

2. The linkage positioning fixture according to claim 1, characterized in that: The height adjustment assembly includes an electric push rod (5) fixedly installed on the top wall of the middle part of the base plate (1). The piston end of the electric push rod (5) is fixedly connected to the bottom wall of the lifting platform (2). Hollow columns (3) are fixedly installed at the four corners of the top wall of the base plate (1). A piston column (4) is slidably connected in the column body of the hollow column (3). The top part of the piston column (4) is fixedly connected to the bottom wall of the lifting platform (2).

3. The linkage positioning fixture according to claim 2, characterized in that: The clamping assembly includes a bidirectional lead screw (16) and a guide rod (17) respectively disposed in the inner cavities on both sides of the clamping platform (7). The two ends of the bidirectional lead screw (16) are rotatably connected between the two side walls of the clamping platform (7) via bearings. The two ends of the guide rod (17) are fixedly connected between the two side walls of the clamping platform (7). One end of the bidirectional lead screw (16) is connected to a first motor (10) via a coupling.

4. The linkage positioning fixture according to claim 3, characterized in that: The top wall of the clamping platform (7) is provided with a through hole (9). The two ends of the bidirectional lead screw (16) are screwed with movable seats (18). The other end of the movable seat (18) is slidably connected to the surface of the guide rod (17). The middle top wall of the movable seat (18) is fixedly installed with a connecting column (11) that moves through the cavity of the through hole (9). The top end of the connecting column (11) is fixedly installed with a clamping plate (12). The plate of the clamping plate (12) is installed with a rotating rod (14) through a bearing. The inner end of the rotating rod (14) is fixedly connected with an arc-shaped clamping block (13). The side wall of the clamping plate (12) on one side is fixedly installed with a second motor (15). The output end of the second motor (15) is connected to the end of the rotating rod (14).

5. The linkage positioning fixture according to claim 4, characterized in that: The tilt adjustment assembly includes an adjustment box (19) fixedly installed on the bottom wall of one side of the lifting platform (2). A one-way screw (24) is rotatably installed between the upper and lower side walls of the inner cavity of the adjustment box (19) via a bearing. A third motor (20) is fixed on the bottom wall of the adjustment box (19). The output end of the third motor (20) is connected to the bottom end of the one-way screw (24). A moving block (25) is screwed onto the surface of the one-way screw (24).

6. The linkage positioning fixture according to claim 5, characterized in that: Adjustment plates (21) are fixedly installed on both sides of the top wall of the movable block (25). The plate body of the adjustment plate (21) moves through the top wall of the adjustment box (19) and the bottom wall of the lifting platform (2). Two fixed blocks (22) are fixedly installed on one side of the bottom wall of the clamping platform (7). The fixed blocks (22) are rotatably connected to the top plate of the adjacent adjustment plate (21) by a pin (23).

Images