Crankshaft primary driving tooth anti-rotation tool
By designing a crankshaft primary active gear anti-rotation fixture, the crankshaft is automatically clamped using a drive motor and transmission screw system, which solves the problem of slow crankshaft positioning speed in the existing technology and improves processing efficiency.
Patent Information
- Application Number
- CN202520081522.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-14
AI Technical Summary
The existing crankshaft has difficulty in achieving automatic clamping and fixation during the installation process with the drive gear, resulting in slow positioning speed and affecting processing efficiency.
A crankshaft primary active gear anti-rotation fixture is designed, which uses components such as a fixture table, support plate, bearing, drive motor and transmission screw. The motor drives the transmission screw to move the sliding block and the fixed clamp closer or further away, so as to quickly clamp the crankshaft.
This technology enables rapid clamping and fixing of the crankshaft, preventing rotation and improving positioning speed and processing efficiency.
Smart Images

Figure CN223656979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a crankshaft primary active gear anti-rotation tooling, belonging to the field of crankshaft machining technology. Background Technology
[0002] A crankshaft is a key mechanical component that converts reciprocating motion into rotational motion. It is mainly used in power equipment such as internal combustion engines and some external combustion engines. Through its cooperation with components such as pistons and connecting rods, it effectively converts the energy generated by fuel combustion into mechanical energy, thereby driving the operation of equipment such as vehicles, ships, and generator sets.
[0003] During the installation of the crankshaft with the drive gear, the crankshaft needs to be clamped and fixed to prevent it from rotating during operation. Currently, crankshafts are usually clamped and fixed using clamping arms. By tightening the clamping bolts, the clamping force of the clamping arms can be adjusted to accommodate crankshafts of different specifications. However, this type of crankshaft fixing fixture cannot achieve the effect of automatic clamping and fixing of the crankshaft, thus reducing the positioning speed of the crankshaft. Therefore, we provide a crankshaft primary drive gear anti-rotation fixture to solve the above problems. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a crankshaft primary drive gear anti-rotation tooling to solve the problems. The specific technical solution is as follows:
[0005] A crankshaft primary active gear anti-rotation fixture includes a fixture table. Two support plates are fixedly connected to the bottom surface of the fixture table. Bearings are fixedly embedded on the side of each support plate that is close to each other. Transmission screws are fixedly connected to the inner rings of each bearing. Two drive motors are located below the fixture table. The output ends of the two drive motors are fixedly connected to the ends of the two transmission screws that are far apart from each other. Two sliding holes are formed on the upper surface of the fixture table. Sliding blocks are slidably connected to the inner walls of the two sliding holes. Transmission blocks are fixedly connected to the bottom surfaces of the two sliding blocks. Threaded holes are formed on the side of each transmission block that is far apart from each other. The outer surfaces of the two transmission screws are threadedly connected to the inner walls of the two threaded holes. Moving plates are fixedly connected to the upper surfaces of the two sliding blocks. Fixed clamps are fixedly installed on the upper surfaces of the two moving plates.
[0006] Preferably, the upper surface of the tooling table is provided with two sets of limiting grooves, and the inner walls of the two sets of limiting grooves are slidably connected with limiting blocks. The upper surfaces of the two sets of limiting blocks are respectively fixedly connected to the bottom surfaces of the two moving plates.
[0007] Preferably, a support cover is fixedly connected to the bottom surface of the tooling table, and a support slider is fixedly connected to the bottom surface of each of the two transmission blocks. The bottom surfaces of the two support sliders are slidably connected to the inner bottom wall of the support cover.
[0008] Preferably, two fixing blocks are fixedly connected to the side of each of the two support plates that are far apart from each other, and the side of each of the two sets of fixing blocks that are close to each other are fixedly connected to the outer surfaces of the two drive motors respectively.
[0009] Preferably, the bottom surface of the tooling table is fixedly connected to two sets of bases, and the two fixed clamps are located above the tooling table.
[0010] Preferably, a vertical plate is fixedly installed on the right side of the tooling table, and a controller is fixedly installed on the right side of the vertical plate.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This crankshaft primary active gear anti-rotation fixture uses two bearings on two support plates to install two transmission screws. Simultaneously, in conjunction with two drive motors, these screws engage with the internal threads of two threaded holes, causing two sliding blocks, two moving plates, and two fixed clamps to move closer or further apart. This provides power for the movement of the two fixed clamps, which, by moving closer together, quickly clamp and fix the crankshaft. This solves the problem of cumbersome operation when using clamping arms to clamp and fix the crankshaft, and improves the speed of crankshaft positioning and anti-rotation. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model;
[0014] Figure 2 This is a sectional view of the front view of this utility model;
[0015] Figure 3 This is a three-dimensional structural diagram of the present invention from a bottom view;
[0016] Figure 4 This is a sectional view of the side view of this utility model.
[0017] Figure descriptions: 1. Tooling table; 2. Support plate; 3. Bearing; 4. Drive motor; 5. Transmission screw; 6. Threaded hole; 7. Transmission block; 8. Sliding block; 9. Sliding hole; 10. Moving plate; 11. Fixed clamp; 12. Limiting block; 13. Limiting groove; 14. Vertical plate; 15. Controller; 16. Base; 17. Support cover; 18. Support slider; 19. Fixed block. Detailed Implementation
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] 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.
[0020] Please see Figure 1-4 In this utility model, a crankshaft primary active gear anti-rotation fixture includes a fixture table 1. Two support plates 2 are fixedly connected to the bottom surface of the fixture table 1. Bearings 3 are fixedly embedded on the side of the two support plates 2 that are close to each other. Transmission screws 5 are fixedly connected to the inner rings of the two bearings 3. Two drive motors 4 are located below the fixture table 1. The output ends of the two drive motors 4 are fixedly connected to the ends of the two transmission screws 5 that are far apart from each other. Two sliding holes 9 are formed on the upper surface of the fixture table 1. Sliding blocks 8 are slidably connected to the inner walls of the two sliding holes 9. The bottom surfaces of the two sliding blocks 8 are... A transmission block 7 is fixedly connected. Threaded holes 6 are opened on the side of the two transmission blocks 7 that are far apart from each other. The outer surfaces of the two transmission screws 5 are respectively threaded to the inner walls of the two threaded holes 6. Moving plates 10 are fixedly connected to the upper surfaces of the two sliding blocks 8. Fixed clamps 11 are fixedly installed on the upper surfaces of the two moving plates 10. Through the threaded engagement of the two drive motors 4, the two transmission screws 5 and the two threaded holes 6, the two sliding blocks 8 and the two fixed clamps 11 will be driven to move closer or further apart, providing power for the movement of the two fixed clamps 11.
[0021] Preferably, the upper surface of the tooling table 1 is provided with two sets of limiting grooves 13, and the inner walls of the two sets of limiting grooves 13 are slidably connected to limiting blocks 12. The upper surfaces of the two sets of limiting blocks 12 are respectively fixedly connected to the bottom surfaces of the two moving plates 10. The bottom surface of the tooling table 1 is fixedly connected to a support cover 17, and the bottom surfaces of the two transmission blocks 7 are fixedly connected to support sliders 18. The bottom surfaces of the two support sliders 18 are slidably connected to the inner bottom wall of the support cover 17. Through the cooperation of the limiting grooves 13 and the limiting blocks 12, the moving plates 10 can be made to move more stably. With the cooperation of the support cover 17 and the support sliders 18, the two transmission blocks 7 will move more stably.
[0022] Preferably, two fixing blocks 19 are fixedly connected to the side of each of the two support plates 2 that are far apart from each other, and the side of each of the two sets of fixing blocks 19 that are close to each other are fixedly connected to the outer surfaces of the two drive motors 4 respectively. Two sets of bases 16 are fixedly connected to the bottom surface of the tooling table 1, and two fixing clamps 11 are located above the tooling table 1. A vertical plate 14 is fixedly installed on the right side of the tooling table 1, and a controller 15 is fixedly installed on the right side of the vertical plate 14. The two fixing blocks 19 can be used to fix and support the drive motors 4, making the drive motors 4 more stable. The two sets of bases 16 can be used to support and fix the bottom of the tooling table 1. The controller 15 can be used to control the operation of the drive motors 4.
[0023] The working principle of this utility model is as follows:
[0024] In use, first connect the device to the power supply, then take out the crankshaft and place it in front of the two fixed clamps 11. Then, start the two drive motors 4 through the controller 15 to run, which can drive the two transmission screws 5 to engage clockwise inside the two threaded holes 6. This will drive the two transmission blocks 7 to move on the surface of the two transmission screws 5. At the same time, it will also drive the two sliding blocks 8, the two moving plates 10 and the two fixed clamps 11 to move closer or further apart. Then, by using the two fixed clamps 11 to move closer together, the crankshaft can be quickly clamped and fixed, preventing the crankshaft from rotating when it is assembled with the drive gear.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0027] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.
Claims
1. A crankshaft primary drive gear anti-rotation fixture, comprising a fixture table (1), characterized in that: The bottom surface of the tooling table (1) is fixedly connected to two support plates (2). Bearings (3) are fixedly embedded on the side of the two support plates (2) that are close to each other. Transmission screws (5) are fixedly connected to the inner rings of the two bearings (3). Two drive motors (4) are provided below the tooling table (1). The output ends of the two drive motors (4) are fixedly connected to the ends of the two transmission screws (5) that are far apart from each other. Two sliding holes (9) are opened on the upper surface of the tooling table (1). Sliding blocks (8) are slidably connected to the inner walls of the two sliding holes (9). Transmission blocks (7) are fixedly connected to the bottom surface of the two sliding blocks (8). Threaded holes (6) are opened on the side of the two transmission blocks (7) that are far apart from each other. The outer surfaces of the two transmission screws (5) are threadedly connected to the inner walls of the two threaded holes (6). Moving plates (10) are fixedly connected to the upper surfaces of the two sliding blocks (8). Fixed clamps (11) are fixedly installed on the upper surfaces of the two moving plates (10).
2. The crankshaft primary drive gear anti-rotation tooling according to claim 1, characterized in that: The upper surface of the tooling table (1) is provided with two sets of limiting grooves (13), and the inner walls of the two sets of limiting grooves (13) are slidably connected with limiting blocks (12). The upper surfaces of the two sets of limiting blocks (12) are respectively fixedly connected to the bottom surfaces of the two moving plates (10).
3. The crankshaft primary drive gear anti-rotation tooling according to claim 1, characterized in that: The bottom surface of the tooling table (1) is fixedly connected to a support cover (17), and the bottom surfaces of the two transmission blocks (7) are fixedly connected to support sliders (18). The bottom surfaces of the two support sliders (18) are slidably connected to the inner bottom wall of the support cover (17).
4. The crankshaft primary drive gear anti-rotation tooling according to claim 1, characterized in that: Two fixing blocks (19) are fixedly connected to the side of each of the two support plates (2) that are far apart from each other, and the side of each of the two sets of fixing blocks (19) that are close to each other are fixedly connected to the outer surfaces of the two drive motors (4).
5. The crankshaft primary drive gear anti-rotation tooling according to claim 1, characterized in that: The bottom surface of the tooling table (1) is fixedly connected to two sets of bases (16), and the two fixed clamps (11) are located above the tooling table (1).
6. The crankshaft primary drive gear anti-rotation tooling according to claim 1, characterized in that: A vertical plate (14) is fixedly installed on the right side of the tooling table (1), and a controller (15) is fixedly installed on the right side of the vertical plate (14).