Positioning clamp for processing motorcycle rear brake master pump

Abstract

The utility model relates to positioning fixture technical field, and disclose a kind of positioning fixture for motorcycle rear brake main pump processing, the positioning fixture for motorcycle rear brake main pump processing, including base, clamping mechanism is provided on the base, the clamping mechanism includes protruding post.This positioning fixture for motorcycle rear brake main pump processing, to improve the positioning stability when motorcycle rear brake main pump processing, prevent workpiece from deviating in processing process, by setting clamping mechanism, wherein protruding post provides rotating fulcrum for clamping plate, two groups of clamping plates are under the action of hydraulic rod propelling V-shaped rod, preliminary clamping is carried out to the one side of workpiece along protruding post rotation, simultaneously, asynchronous motor drives screw rod rotation, screw rod and threaded barrel are screwed, so that threaded barrel drives pressing plate moves to the other side of workpiece under the limiting action of rectangular block, realize the further clamping of workpiece, the cooperation of clamping plate and pressing plate can fix workpiece from multiple directions, to reach the purpose of stable positioning.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, specifically a positioning fixture for machining a motorcycle rear brake master pump. Background Technology

[0002] The rear brake master cylinder is a core component of the motorcycle braking system. Its machining precision directly affects the braking sensitivity and driving safety of the motorcycle. With the continuous development of the motorcycle industry, the market's demand for motorcycle performance, safety and diversification is increasing, which puts forward more stringent requirements for the quality of the rear brake master cylinder.

[0003] Some traditional clamps use manual clamping, relying on the operator's experience and strength to turn the clamp handle to achieve clamping. This method is not only difficult to control precisely, but the force applied by different operators also varies, which can easily lead to inconsistent clamping of the workpiece. During processing, insufficient clamping force may cause the workpiece to loosen, resulting in processing accidents; excessive clamping force may cause deformation of the rear brake master pump, especially for some thin-walled rear brake master pumps. Deformation will affect the dimensional accuracy and surface quality of its internal oil passages, seriously damaging product performance.

[0004] In view of this, we propose a positioning fixture for machining the rear brake master cylinder of a motorcycle. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning fixture for machining the rear brake master cylinder of a motorcycle, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A positioning fixture for machining a motorcycle rear brake master cylinder includes a base, on which a clamping mechanism is disposed, the clamping mechanism comprising: A protruding post is fixedly installed at the top center of the base. A clamping plate is rotatably installed on the arc-shaped outer wall of the protruding post. Limiting blocks are fixedly installed on both sides of the top center of the base. The outer wall of the limiting block is attached to the side wall of the clamping plate. A hydraulic rod is fixedly installed on the inner wall of one side of the base, and a V-shaped rod is fixedly installed on the piston end of the hydraulic rod. The inner wall of the V-shaped rod slides against the outer wall of the clamping plate. An asynchronous motor is fixedly installed on the outer wall of the other end of the base. A threaded rod is fixedly installed on the output end of the asynchronous motor. The outer wall of the threaded rod slides against the inside of the side wall of the base. A threaded cylinder is threadedly fitted on the outer wall of the threaded rod. The side wall of the threaded cylinder is fixedly installed on the side wall of the pressure plate. The bottom end of the pressure plate slides against the top end of the base. The outer wall of the pressure plate slides against the inside of a rectangular block. The rectangular block is fixedly installed on the top end of the base.

[0007] In a further embodiment, the clamps are provided in two sets.

[0008] In a further embodiment, the limiting block is provided in two sets.

[0009] In a further embodiment, the diameter of the threaded rod is adapted to the inner diameter of the threaded cylinder.

[0010] In a further embodiment, an auxiliary mechanism is provided on the base. The auxiliary mechanism includes a U-shaped frame. The bottom end of the base is fixedly installed on the top end of the U-shaped frame. The bottom end of the U-shaped frame is fixedly installed on the fixed end of a hydraulic cylinder. A positioning block is fixedly installed on the piston end of the hydraulic cylinder. The outer wall of the positioning block is slidably installed inside the bottom end of the base.

[0011] In a further embodiment, the positioning block is conical.

[0012] In a further embodiment, the positioning block is located between the clamping plate and the pressure plate.

[0013] Compared with the prior art, this utility model provides a positioning fixture for machining the rear brake master cylinder of a motorcycle, which has the following beneficial effects: 1. This positioning fixture for machining the rear brake master pump of a motorcycle is designed to improve the positioning stability during machining and prevent workpiece displacement. A clamping mechanism is incorporated, where a protruding column provides a pivot point for the clamping plates. Under the influence of a hydraulic rod pushing a V-shaped rod, the two clamping plates rotate along the protruding column to initially clamp one side of the workpiece. Simultaneously, an asynchronous motor drives a threaded rod to rotate. The threaded rod engages with a threaded cylinder, causing the threaded cylinder to move the pressure plate to the other side of the workpiece under the limiting action of a rectangular block, further clamping the workpiece. The cooperation between the clamping plates and the pressure plate allows for multi-directional fixation of the workpiece, achieving stable positioning.

[0014] 2. This positioning fixture for machining the rear brake master pump of a motorcycle is designed to enhance its machining flexibility and adaptability, facilitating the handling of workpieces of different specifications and machining requirements. An auxiliary mechanism is incorporated, with a U-shaped frame providing a mounting base for the hydraulic cylinder. The hydraulic cylinder drives the conical positioning block to move up and down. Since the workpiece is sleeved outside the positioning block, and the positioning block is conical, its outer wall can fit against the inner wall of workpieces with different inner diameters, allowing for precise positioning from the bottom and inner side of the workpiece. Simultaneously, the positioning block is located between the clamping plate and the pressure plate, and in conjunction with the clamping mechanism, it clamps from the side. The clamping force and position can be flexibly adjusted according to the workpiece size, thereby significantly improving the fixture's adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a cross-sectional view of the structure of this utility model. Figure 4 This is a cross-sectional view of the workpiece body of this utility model.

[0016] Explanation of icon numbers: 1. Base; 2. Clamping mechanism; 21. Protruding column; 22. Clamping plate; 23. Limiting block; 24. Hydraulic rod; 25. V-shaped rod; 26. Asynchronous motor; 27. Threaded rod; 28. Threaded cylinder; 29. ​​Pressure plate; 210. Rectangular block; 3. Auxiliary mechanism; 31. U-shaped frame; 32. Hydraulic cylinder; 33. Positioning block. Detailed Implementation

[0017] 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.

[0018] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0019] Please see Figures 1-4 This utility model provides a technical solution: A positioning fixture for machining a motorcycle rear brake master cylinder includes a base 1.

[0020] In one embodiment of this utility model, a clamping mechanism 2 is provided on the base 1. The clamping mechanism 2 includes a protruding post 21. The protruding post 21 is fixedly installed at the middle of the top of the base 1. A clamping plate 22 is rotatably installed on the arc-shaped outer wall of the protruding post 21. Two sets of clamping plates 22 are provided. Limiting blocks 23 are fixedly installed on both sides of the middle of the top of the base 1. Two sets of limiting blocks 23 are provided. The outer wall of the limiting blocks 23 is attached to the side wall of the clamping plate 22. A fixed end of a hydraulic rod 24 is fixedly installed on one inner wall of the base 1. A V-shaped rod 25 is fixedly installed on the piston end of the hydraulic rod 24. The inner wall of the V-shaped rod 25 slides. An asynchronous motor 26 is fixedly installed on the outer wall of the base 1 and attached to the outer wall of the clamping plate 22. A threaded rod 27 is fixedly installed on the output end of the asynchronous motor 26. The outer wall of the threaded rod 27 slides against the inside of the side wall of the base 1. A threaded cylinder 28 is threadedly fitted on the outer wall of the threaded rod 27. The diameter of the threaded rod 27 matches the inner diameter of the threaded cylinder 28. The side wall of the threaded cylinder 28 is fixedly installed on the side wall of the pressure plate 29. The bottom end of the pressure plate 29 slides against the top end of the base 1. The outer wall of the pressure plate 29 slides against the inside of the rectangular block 210. The rectangular block 210 is fixedly installed on the top end of the base 1.

[0021] In this embodiment, when the clamping mechanism 2 is working, the hydraulic rod 24 is activated, and the piston end of the hydraulic rod 24 extends outward, pushing the V-shaped rod 25 to move closer to the clamping plate 22. During the movement, the inner wall of the V-shaped rod 25 maintains a sliding contact with the outer wall of the clamping plate 22, thereby causing the two sets of clamping plates 22 to rotate around the arc-shaped outer wall of the protruding post 21 as the rotation center. When the two sets of clamping plates 22 rotate, their side walls gradually approach one side of the workpiece. At the same time, the two sets of limiting blocks 23 limit the rotation angle of the clamping plates 22 to prevent the clamping plates 22 from rotating excessively and damaging the workpiece. Finally, the two sets of clamping plates 22 make close contact with one side of the workpiece, completing the stable initial clamping of one side of the workpiece. Since the clamping plates 22 can present different angles, they can adapt to workpieces of different specifications. When the clamping plates 22 are in contact with the limiting blocks 23, the clamping plates 22 are horizontal. In this state, the workpiece body ( Figure 4(A simplified diagram of the motorcycle rear brake master pump workpiece) The workpiece is stably clamped, and then the asynchronous motor 26 is started. The output end of the asynchronous motor 26 begins to rotate, driving the threaded rod 27 to rotate synchronously. During the rotation of the threaded rod 27, its outer wall slides smoothly along the inner side wall of the base 1. Since the outer wall of the threaded rod 27 and the inner wall of the threaded cylinder 28 are in a threaded fit, and the diameter of the threaded rod 27 matches the inner diameter of the threaded cylinder 28, the rotation of the threaded rod 27 is converted into the linear movement of the threaded cylinder 28. The threaded cylinder 28 then drives the pressure plate 29 to move towards the other side of the workpiece. When the pressure plate 29 moves, its bottom end slides along the top end of the base 1, and its outer wall slides along the inside of the rectangular block 210. The rectangular block 210 restricts the direction of movement of the pressure plate 29, ensuring that the pressure plate 29 moves smoothly. Finally, the pressure plate 29 comes into close contact with the other side of the workpiece and applies pressure, cooperating with the clamping plate 22 to fix the workpiece from multiple directions, achieving stable clamping of the workpiece and effectively preventing the workpiece from shifting during processing.

[0022] In one embodiment of this utility model, an auxiliary mechanism 3 is provided on the base 1. The auxiliary mechanism 3 includes a U-shaped frame 31. The bottom end of the base 1 is fixedly installed on the top end of the U-shaped frame 31. The bottom end of the U-shaped frame 31 is fixedly installed on the fixed end of the hydraulic cylinder 32. A positioning block 33 is fixedly installed on the piston end of the hydraulic cylinder 32. The positioning block 33 is conical. The outer wall of the positioning block 33 is slidably installed inside the bottom end of the base 1. The positioning block 33 is located between the clamping plate 22 and the pressure plate 29.

[0023] In this embodiment, when the auxiliary mechanism 3 is working, the operator first places the motorcycle rear brake master pump workpiece to be processed onto the outside of the positioning block 33, starts the hydraulic cylinder 32, and the piston end of the hydraulic cylinder 32 will extend and retract along its own axis, thereby driving the positioning block 33 to move up and down synchronously. Since the positioning block 33 is conical, its outer wall will form a tight fit with the inner wall according to the different inner diameters of the workpiece, so as to adapt to workpieces of different specifications and avoid the workpiece shaking in the initial positioning stage. The hydraulic cylinder 32 is then turned off. At this time, the positioning block 33 completes accurate initial positioning from the bottom and the inside of the workpiece, providing a stable foundation for the subsequent clamping operation of the clamping mechanism 2.

[0024] All electrical components mentioned in this application are electrically connected to the PLC controller and 220V AC mains power. The PLC controller is a conventional and known device capable of controlling the hydraulic rod 24, asynchronous motor 26, and hydraulic cylinder 32. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding, which are mature in the prior art. The standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. It should be noted that the above electrical components are all prior art products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that all electrical components can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure mentioned in this application, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.

[0025] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A positioning fixture for machining a motorcycle rear brake master cylinder, comprising a base (1), characterized in that: The base (1) is provided with a clamping mechanism (2), the clamping mechanism (2) includes: A protruding column (21) is fixedly installed at the top center of the base (1). A clamping plate (22) is rotatably installed on the arc-shaped outer wall of the protruding column (21). Limiting blocks (23) are fixedly installed on both sides of the top center of the base (1). The outer wall of the limiting block (23) is attached to the side wall of the clamping plate (22). The hydraulic rod (24) is fixedly installed on the inner wall of one side of the base (1) at the fixed end of the hydraulic rod (24), and a V-shaped rod (25) is fixedly installed on the piston end of the hydraulic rod (24). The inner wall of the V-shaped rod (25) slides against the outer wall of the clamp (22). An asynchronous motor (26) is fixedly installed on the outer wall of the other end of the base (1). A threaded rod (27) is fixedly installed at the output end of the asynchronous motor (26). The outer wall of the threaded rod (27) slides against the inside of the side wall of the base (1). A threaded cylinder (28) is threadedly fitted on the outer wall of the threaded rod (27). The side wall of the threaded cylinder (28) is fixedly installed on the side wall of the pressure plate (29). The bottom end of the pressure plate (29) slides against the top end of the base (1). The outer wall of the pressure plate (29) slides against the inside of the rectangular block (210). The rectangular block (210) is fixedly installed on the top end of the base (1).

2. The positioning fixture for machining a motorcycle rear brake master cylinder according to claim 1, characterized in that: The clamp (22) is provided in two sets.

3. A positioning fixture for machining a motorcycle rear brake master cylinder according to claim 1, characterized in that: The limiting block (23) is provided in two sets.

4. A positioning fixture for machining a motorcycle rear brake master cylinder according to claim 1, characterized in that: The diameter of the threaded rod (27) is matched with the inner diameter of the threaded cylinder (28).

5. A positioning fixture for machining a motorcycle rear brake master cylinder according to claim 1, characterized in that: An auxiliary mechanism (3) is provided on the base (1). The auxiliary mechanism (3) includes a U-shaped frame (31). The bottom end of the base (1) is fixedly installed on the top end of the U-shaped frame (31). The bottom end of the U-shaped frame (31) is fixedly installed on the fixed end of the hydraulic cylinder (32). A positioning block (33) is fixedly installed on the piston end of the hydraulic cylinder (32). The outer wall of the positioning block (33) is slidably installed inside the bottom end of the base (1).

6. A positioning fixture for machining a motorcycle rear brake master cylinder according to claim 5, characterized in that: The positioning block (33) is conical.

7. A positioning fixture for machining a motorcycle rear brake master cylinder according to claim 5, characterized in that: The positioning block (33) is located between the clamping plate (22) and the pressure plate (29).

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