Motorcycle rocker arm shaft machining positioning structure

Abstract

The utility model discloses a motorcycle rocker arm shaft processing positioning structure belongs to motorcycle spare part processing technical field, including the positioning platform shell, the upper surface fixed connection of positioning platform shell has two vertical symmetry setting concave frame, every concave frame's upper end all fixedly connected with a positioning clamping mechanism for clamping motorcycle rocker arm shaft, be equipped with the abutting mechanism for abutting positioning to the both ends of motorcycle rocker arm shaft in the positioning platform shell, the positioning clamping mechanism includes the board groove shell fixed on the upper end of concave frame, the opening of board groove shell sets up to the upwards. The device sets up positioning clamping mechanism, and the lower abutting block and two side abutting blocks can abut motorcycle rocker arm shaft from three directions, and clamping is more stable firm, and can be applicable to the positioning fixed of different thickness specifications motorcycle rocker arm shaft, and sets up abutting mechanism and can abut the both ends of motorcycle rocker arm shaft, prevents the problem of axial displacement.

Description

Technical Field

[0001] This utility model belongs to the field of motorcycle parts processing technology, specifically a motorcycle rocker arm shaft processing and positioning structure. Background Technology

[0002] The rocker arm shaft is an important component in the transmission system of a motorcycle engine. It is mainly used to connect the camshaft and valve stem to control the opening and closing of the valves. The rocker arm shaft drives the valve stem to move up and down through the rotation of the camshaft, thereby controlling the opening or closing of the valves and ensuring the normal intake and exhaust of the engine. Its machining accuracy directly affects the stability and safety of the motorcycle. It is necessary to ensure the accuracy of key dimensions such as the coaxiality of the outer circle and the perpendicularity of the end face. The rocker arm shaft needs to be machined using a positioning structure.

[0003] In a Chinese patent application for a rapid positioning device for machining the curved surface of a rocker arm shaft (authorization announcement number: CN219254853U), the device includes a mounting base; a left positioning device, which includes a rotary positioning rod and an inclined screw. The rotary positioning rod is fixed to the left end of the mounting base via a hinged base, and the rotary positioning rod is hinged to the inclined screw via a connecting rod. The inclined screw is tilted and fixed to the mounting base via a bearing; and a right positioning device, which includes two vertical positioning rods located on the mounting base. The device utilizes the rotation of the inclined screw at both the front and rear ends to enable the connecting rod to move up and down on the inclined screw, thereby achieving the angular rotation of the rotary positioning rod. This device employs the movement principle of the nut and screw to achieve the rotation of the rotary positioning rod, allowing the vertical positioning rod and the arc-shaped clamp on the rotary positioning rod to hold the round shaft-like rocker arm shaft. However, the arc-shaped clamp in this device has a limited range of compatible models, making it difficult to adapt to rocker arm shafts of different thicknesses for positioning and fixing. Its applicability is insufficient, and the rocker arm shaft is prone to axial movement, resulting in unreliable positioning. Summary of the Invention

[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a positioning structure for machining a motorcycle rocker arm shaft, comprising a positioning platform housing, wherein two vertically symmetrically arranged concave frames are fixedly connected to the upper surface of the positioning platform housing, and a positioning clamping mechanism for clamping the motorcycle rocker arm shaft is fixedly connected to the upper end of each concave frame, and a clamping mechanism for clamping the two ends of the motorcycle rocker arm shaft is provided in the positioning platform housing;

[0005] The positioning and clamping mechanism includes a plate groove shell fixed to the upper end of a concave frame. The opening of the plate groove shell faces upward. A vertically arranged electric push rod is fixedly connected to the bottom of the plate groove shell. The upper end of the electric push rod passes through the plate groove shell and is fixedly connected to a cross. The upper end of the cross extends to the top of the plate groove shell and is fixedly connected to a lower abutment block. The lower part of the inner wall of the plate groove shell is rotatably connected to two symmetrically arranged swing blocks via two first rotating shafts. The side walls of the two swing blocks are provided with arc-shaped slots. The side walls of the horizontal section of the cross are fixedly connected to two first sliding pillars. Each first sliding pillar passes through an arc-shaped slot. The upper part of the inner wall of the plate groove shell is rotatably connected to two symmetrically arranged arc-shaped swing rods via two second rotating shafts. The lower part of the side walls of the two arc-shaped swing rods is fixedly connected to a second sliding pillar. The upper part of the side walls of the two swing blocks is provided with sliding openings. Each second sliding pillar passes through a sliding opening. The upper ends of the two arc-shaped swing rods extend to the top of the lower abutment block and are fixedly connected to side abutment blocks.

[0006] As a further embodiment of this utility model: the clamping mechanism includes a locking motor fixed to the front side wall of the positioning platform housing. The driving end of the locking motor passes through the positioning platform housing and is fixedly connected to a spur gear. Two diagonally parallel racks are meshed on both sides of the spur gear. A U-shaped frame is fixedly connected to the far end of each of the two racks. The two U-shaped frames pass through the upper outer side of the positioning platform housing and are fixedly connected to two symmetrically arranged clamping plates.

[0007] As a further embodiment of this utility model: a guide rod is fixedly connected to the inner wall of the positioning platform housing on the side away from the rack, and a guide groove is provided on the inner wall of the rack, with the guide rod slidably connected to the guide groove.

[0008] As a further improvement of this utility model, rubber pads are fixedly connected to the side walls of the two abutting plates on opposite sides.

[0009] As a further embodiment of this utility model: the lower abutment block and the side abutment block are both circular block structures, and the outer side walls of the lower abutment block and the side abutment block are fixedly connected with anti-slip soft sleeves.

[0010] As a further embodiment of this utility model: a PLC controller is fixedly connected to the upper surface of the positioning platform shell, and the PLC controller is electrically connected to the positioning clamping mechanism and the clamping mechanism respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, by setting a positioning and clamping mechanism, places the motorcycle rocker arm shaft horizontally on the lower abutment block. When the electric push rod is activated and extended, it pushes the cross upward. At this time, it drives the two first sliding pillars to slide in the two arc-shaped slots, thereby causing the two swing blocks to swing in opposite directions. This causes the sliding mouth to shift, causing the arc-shaped swing rod fixed to the second sliding pillar to swing. Thus, while the lower abutment block moves upward, the two side abutment blocks swing downward in opposite directions. This allows the motorcycle rocker arm shaft to be clamped from three directions, making the clamping more stable and reliable. It is also applicable to positioning and fixing motorcycle rocker arm shafts of different thicknesses, thus having a wider range of applications.

[0013] 2. This utility model, by setting a clamping mechanism, when the motorcycle rocker arm shaft is clamped, the locking motor is started, driving the spur gear to rotate. Since the spur gear is engaged with two racks respectively, the two racks move towards each other, thereby driving the two clamping plates fixed to the two U-shaped frames to move towards each other until they clamp the two ends of the motorcycle rocker arm shaft. This can further position the motorcycle rocker arm shaft and prevent axial displacement of the motorcycle rocker arm shaft during processing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional enlarged structural diagram of the positioning and clamping mechanism of this utility model;

[0016] Figure 3 This is a side cross-sectional view of the positioning and clamping mechanism of this utility model.

[0017] Figure 4 This is a frontal cross-sectional view of the positioning platform shell of this utility model.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Positioning platform housing; 2. Concave frame; 3. Plate groove housing; 4. Electric push rod; 5. Cross; 6. Lower stop block; 7. First rotating shaft; 8. Swing block; 9. Arc-shaped groove; 10. First sliding column; 11. Second rotating shaft; 12. Arc-shaped swing rod; 13. Second sliding column; 14. Sliding opening; 15. Side stop block; 16. Locking motor; 17. Circular gear; 18. Rack; 19. U-shaped frame; 20. Clamping plate; 21. Guide rod; 22. Guide slide groove; 23. Rubber pad; 24. Anti-slip soft sleeve; 25. PLC controller. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 This embodiment provides a positioning structure for machining a motorcycle rocker arm shaft, which includes a positioning platform 1. Two vertically symmetrical concave frames 2 are fixedly connected to the upper surface of the positioning platform 1. Each concave frame 2 has a positioning clamping mechanism for clamping the motorcycle rocker arm shaft fixedly connected to its upper end. The positioning platform 1 is provided with a clamping mechanism for clamping and positioning both ends of the motorcycle rocker arm shaft.

[0022] The positioning and clamping mechanism includes a plate groove shell 3 fixed to the upper end of the concave frame 2. The opening of the plate groove shell 3 faces upward. A vertically arranged electric push rod 4 is fixedly connected to the bottom of the plate groove shell 3. The upper end of the electric push rod 4 passes through the plate groove shell 3 and is fixedly connected to a cross 5. The upper end of the cross 5 extends to the top of the plate groove shell 3 and is fixedly connected to a lower abutment block 6. The lower part of the inner wall of the plate groove shell 3 is rotatably connected to two symmetrically arranged swing blocks 8 via two first rotating shafts 7. The side walls of the two swing blocks 8 are each provided with an arc-shaped groove 9. The side walls of the horizontal section of the cross 5 are fixedly connected to two first sliding pillars 10. Each first sliding pillar 10 passes through an arc-shaped groove 9. The upper part of the inner wall of the plate groove shell 3 is rotatably connected to two symmetrically arranged arc-shaped swing rods 12 via two second rotating shafts 11. The lower part of the side walls of the two arc-shaped swing rods 12 are fixedly connected to second sliding pillars 13. Each swing block 8 has a sliding opening 14 on the upper side wall. Each second sliding column 13 passes through a sliding opening 14. The upper ends of the two arc-shaped swing rods 12 extend to the top of the lower abutment block 6 and are fixedly connected to side abutment blocks 15. When the motorcycle rocker arm shaft is placed horizontally on the lower abutment block 6, the electric push rod 4 is activated to extend and push the cross 5 upward. At this time, the two first sliding columns 10 slide in the two arc-shaped slots 9, thereby causing the two swing blocks 8 to swing in opposite directions. At this time, the sliding opening 14 is displaced, causing the arc-shaped swing rods 12 fixed to the second sliding column 13 to swing. Thus, while the lower abutment block 6 moves upward, the two side abutment blocks 15 swing downward in opposite directions, which can clamp the motorcycle rocker arm shaft from three directions, making the clamping more stable and reliable. It can also be used to position and fix motorcycle rocker arm shafts of different thicknesses, making it more widely applicable.

[0023] like Figure 1 and Figure 4As shown: The clamping mechanism includes a locking motor 16 fixed to the front side wall of the positioning platform housing 1. The drive end of the locking motor 16 extends into the positioning platform housing 1 and is fixedly connected to a spur gear 17. Two diagonally parallel racks 18 are meshed on both sides of the spur gear 17. A U-shaped frame 19 is fixedly connected to the far end of each rack 18. The two U-shaped frames 19 extend to the upper outer side of the positioning platform housing 1 and are fixedly connected to two symmetrically arranged clamping plates 20. When the locking motor 16 is started, it drives the spur gear 17 to rotate. Since the spur gear 17 is meshed with the two racks 18, the two racks 18 move towards each other, which in turn drives the two clamping plates 20 fixed to the two U-shaped frames 19 to move towards each other until they clamp the two ends of the motorcycle rocker arm shaft. This can further position the motorcycle rocker arm shaft and prevent axial displacement of the motorcycle rocker arm shaft during processing.

[0024] like Figure 4 As shown: A guide rod 21 is fixedly connected to the inner wall of the positioning platform housing 1 on the side away from the rack 18. A guide groove 22 is provided on the inner wall of the rack 18. The guide rod 21 is slidably connected to the guide groove 22, so that the lateral displacement of the rack 18 is more stable.

[0025] like Figure 1 As shown: Rubber pads 23 are fixedly connected to the side walls of the two opposing clamping plates 20, ensuring a firm and secure connection.

[0026] like Figure 2 As shown: both the lower abutment block 6 and the side abutment block 15 are circular block structures, and the outer walls of both the lower abutment block 6 and the side abutment block 15 are fixedly connected with anti-slip soft sleeves 24, which can make the motorcycle rocker arm shaft more stable and prevent wear.

[0027] like Figure 1 As shown: A PLC controller 25 is fixedly connected to the upper surface of the positioning stage housing 1. The PLC controller 25 is electrically connected to the positioning clamping mechanism and the abutting mechanism respectively. It is easy to operate and has an external power supply. The circuit involved is existing technology and can be fully implemented by those skilled in the art, so there is no need to elaborate.

[0028] Working principle: When positioning the motorcycle rocker arm shaft during the processing, the motorcycle rocker arm shaft is placed horizontally on the lower abutment block 6. The electric push rod 4 is activated to extend, pushing the cross 5 upward. At this time, the two first sliding pillars 10 slide in the two arc-shaped slots 9, which in turn causes the two swing blocks 8 to swing in opposite directions. At this time, the sliding opening 14 is displaced, causing the arc-shaped swing rod 12 fixed to the second sliding pillar 13 to swing. Thus, while the lower abutment block 6 moves upward, the two side abutment blocks 15 swing downward in opposite directions, which can clamp the motorcycle rocker arm shaft from three directions, making the clamping more stable and reliable. It can also be used to position and fix motorcycle rocker arm shafts of different thicknesses, making it more widely applicable.

[0029] Then, the locking motor 16 is started to work, driving the spur gear 17 to rotate. Since the spur gear 17 is meshed with the two racks 18 respectively, the two racks 18 move towards each other, which in turn drives the two clamping plates 20 fixed to the two U-shaped frames 19 to move towards each other until they clamp the two ends of the motorcycle rocker arm shaft. This can further position the motorcycle rocker arm shaft and prevent the motorcycle rocker arm shaft from axially displacing during the processing.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning structure for machining a motorcycle rocker arm shaft, comprising a positioning platform housing (1), characterized in that, The upper surface of the positioning platform (1) is fixedly connected to two vertically symmetrical concave frames (2). Each concave frame (2) is fixedly connected to a positioning clamping mechanism for clamping the motorcycle rocker arm shaft. The positioning platform (1) is provided with a clamping mechanism for clamping and positioning the two ends of the motorcycle rocker arm shaft. The positioning and clamping mechanism includes a plate groove shell (3) fixed to the upper end of the concave frame (2). The opening of the plate groove shell (3) faces upward. A vertically arranged electric push rod (4) is fixedly connected to the bottom of the plate groove shell (3). The upper end of the electric push rod (4) penetrates into the plate groove shell (3) and is fixedly connected to a cross (5). The upper end of the cross (5) extends to the top of the plate groove shell (3) and is fixedly connected to a lower abutment block (6). The lower part of the inner wall of the plate groove shell (3) is rotatably connected to two symmetrically arranged swing blocks (8) through two first rotating shafts (7). The side walls of the two swing blocks (8) are provided with arc-shaped slots (9). The horizontal cross (5) Two first sliding pillars (10) are fixedly connected to the side wall of the section. Each first sliding pillar (10) passes through an arc-shaped slot (9). The upper part of the inner wall of the plate groove shell (3) is rotatably connected to two symmetrically arranged arc-shaped swing rods (12) through two second rotating shafts (11). The lower part of the side wall of each of the two arc-shaped swing rods (12) is fixedly connected to a second sliding pillar (13). The upper part of the side wall of each of the two swing blocks (8) is provided with a sliding opening (14). Each second sliding pillar (13) passes through a sliding opening (14). The upper ends of the two arc-shaped swing rods (12) are fixedly connected to a side abutment block (15) above the lower abutment block (6).

2. The motorcycle rocker arm shaft machining and positioning structure according to claim 1, characterized in that, The clamping mechanism includes a locking motor (16) fixed to the front side wall of the positioning platform housing (1). The driving end of the locking motor (16) extends into the positioning platform housing (1) and is fixedly connected to a spur gear (17). Two diagonally parallel racks (18) are meshed on both sides of the spur gear (17). A U-shaped frame (19) is fixedly connected to the far end of each of the two racks (18). The two U-shaped frames (19) extend to the upper outer side of the positioning platform housing (1) and are fixedly connected to two symmetrically arranged clamping plates (20).

3. The motorcycle rocker arm shaft machining and positioning structure according to claim 2, characterized in that, A guide rod (21) is fixedly connected to the inner wall of the positioning platform housing (1) on the side away from the rack (18). A guide groove (22) is provided on the inner wall of the rack (18). The guide rod (21) is slidably connected to the guide groove (22).

4. The motorcycle rocker arm shaft machining and positioning structure according to claim 2, characterized in that, Rubber pads (23) are fixedly connected to the opposite side walls of the two abutment plates (20).

5. The motorcycle rocker arm shaft machining and positioning structure according to claim 1, characterized in that, Both the lower abutment block (6) and the side abutment block (15) are circular blocks, and the outer walls of both the lower abutment block (6) and the side abutment block (15) are fixedly connected with anti-slip soft sleeves (24).

6. The motorcycle rocker arm shaft machining and positioning structure according to claim 1, characterized in that, A PLC controller (25) is fixedly connected to the upper surface of the positioning platform housing (1), and the PLC controller (25) is electrically connected to the positioning clamping mechanism and the clamping mechanism respectively.

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