A press fitting device for a variable cam ring

Abstract

The utility model discloses a kind of press-fitting devices of variable-speed cam ring, including workbench and cam ring piece, the top of workbench is fixedly installed with limit frame, the bottom of the inner cavity of limit frame is fixedly connected with cylindrical recess, the utility model relates to cam ring press-fitting technical field.This press-fitting device of variable-speed cam ring, by being provided with guide cylinder in the upper portion of rotating shaft body, and being provided with strip block, correction plate and first spring in the inside of guide cylinder, use in collocation rotating rod and inclined surface pressure groove, the setting of these structures, can let staff first quickly cam ring piece is sleeved in the surface of guide cylinder, then extrude strip block outer spring using inclined surface pressure groove, and in the process of guide cylinder rotation, let strip block and the recess of cam ring piece butt joint, to drive cam ring piece to carry out synchronous rotation and rotating shaft body overlap, then pressure rod directly drops and presses cam ring piece.

Description

Technical Field

[0001] This utility model relates to the field of cam ring press-fitting technology, specifically a press-fitting device for a variable speed cam ring. Background Technology

[0002] A transmission, also known as a gearbox, is a mechanism used to change the speed and torque from an engine. It can change the transmission ratio between the output shaft and the input shaft in a fixed or progressively increasing manner. A transmission consists of a speed transmission mechanism and a control mechanism.

[0003] In existing transmissions, the cam ring is one of the core components. There are usually several cam rings, which are mounted tightly on the surface of the shaft. Therefore, manual installation is often required. Although manual installation of the cam rings is the norm, it still has significant drawbacks in practical use, such as: The installation of the cam ring plate and the shaft requires precise alignment of the groove and the protrusion. Since there is an interference fit between the cam ring plate and the shaft, it is difficult to install manually. Several tools are required, and the shaft needs to be fixed first, then the cam ring plate needs to be straightened, and finally the tool is used to press it in. This makes the whole process very cumbersome and inconvenient, and reduces the pressing efficiency. Therefore, a press-fitting device for a variable speed cam ring is now designed to improve operational efficiency and address these shortcomings. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a press-fitting device for a variable speed cam ring, which solves the problems of low efficiency and cumbersome press-fitting of existing cam ring plates.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a press-fitting device for a variable speed cam ring, comprising a worktable and a cam ring plate. A limit frame is fixedly installed on the top of the worktable. A cylindrical recess is fixedly connected to the bottom of the inner cavity of the limit frame. A rotating shaft body is provided on the top of the cylindrical recess. A guide cylinder is provided at the top of the rotating shaft body. A vertical groove is provided on the right side of the guide cylinder. A cross section is fixedly connected to the inner wall of the guide cylinder. A spring rod is slidably installed on one side of the cross section through an opening. A strip block that cooperates with the vertical groove is fixedly connected to the right end of the spring rod. A first spring is fixedly connected to the left end of the spring rod. A straightening plate is fixedly connected to the left end of the first spring. The cam ring plate is sleeved on the surface of the guide cylinder.

[0006] Preferably, both sides of the limiting frame are fixedly connected to polygonal rods by fixing blocks, an arc-shaped frame is slidably installed on the surface of the polygonal rod, a second spring is sleeved on the surface of the polygonal rod, and an annular guide groove is opened on the lower part of the guide cylinder surface to cooperate with the arc-shaped frame.

[0007] Preferably, an electric telescopic rod is fixedly connected to the rear side of the bottom of the workbench, and a motor is fixedly connected to the top of the electric telescopic rod via a bracket. The output shaft of the motor is fixedly connected to a rotating rod that cooperates with the guide cylinder via a coupling.

[0008] Preferably, the right side of the rotating rod is provided with a sloping groove that works in conjunction with the straightening plate.

[0009] Preferably, a top plate is fixedly connected to the surface of the rotating rod, and pressure rods that cooperate with the cam ring are fixedly connected to both sides of the bottom of the top plate.

[0010] Preferably, both sides of the top plate are fixedly connected with inclined pressure plates that cooperate with the arc-shaped frame.

[0011] This invention provides a press-fitting device for a variable speed cam ring. Compared with existing technologies, it has the following advantages: (1) The press-fitting device for the variable speed cam ring is provided with a guide cylinder on the upper part of the rotating shaft body, and a strip block, a straightening plate and a first spring are provided on the inner side of the guide cylinder. It is used in conjunction with the rotating rod and the inclined pressure groove. The structure allows the operator to quickly put the cam ring plate on the surface of the guide cylinder, and then use the inclined pressure groove to squeeze the strip block outward. During the rotation of the guide cylinder, the strip block and the groove of the cam ring plate are connected, thereby driving the cam ring plate to rotate synchronously and overlap with the rotating shaft body. Then the pressure rod directly descends to press the cam ring plate, which can press the cam ring plate and the rotating shaft body, effectively improving the press-fitting efficiency. It does not require complicated operations and is convenient for operators to use.

[0012] (2) The press-fitting device for the variable speed cam ring is equipped with an arc frame that works with the annular guide groove by using a polygonal rod on both sides of the limiting frame, and is used in conjunction with a sloping pressure plate. The setup of these structures allows the guide cylinder to be limited by the arc frame after the rotating shaft body is installed, so that the guide cylinder and the top of the rotating shaft body can be accurately connected, ensuring the stability of the connection between the rotating rod and the guide cylinder, and also facilitating the disassembly of the rotating shaft body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rotating rod, inclined groove, and pressure rod structure of this utility model; Figure 3 This is a cross-sectional view of the guide cylinder structure of this utility model; Figure 4 This utility model Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the polygonal rod, arc frame, and second spring structure of this utility model.

[0014] In the diagram: 1. Workbench; 2. Limiting frame; 3. Cylindrical recess; 4. Rotary shaft body; 5. Guide cylinder; 6. Vertical groove; 7. Horizontal section plate; 8. Rebound rod; 9. Strip block; 10. First spring; 11. Correcting plate; 12. Cam ring plate; 13. Polygonal rod; 14. Arc frame; 15. Second spring; 16. Electric telescopic rod; 17. Motor; 18. Top plate; 19. Rotating rod; 20. Inclined pressure groove; 21. Pressure rod; 22. Inclined pressure plate; 23. Annular guide groove. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-5 This utility model provides a technical solution: a press-fitting device for a variable speed cam ring, including a worktable 1 and a cam ring plate 12. A limit frame 2 is fixedly installed on the top of the worktable 1. A cylindrical recess 3 is fixedly connected to the bottom of the inner cavity of the limit frame 2. A rotating shaft body 4 is provided on the top of the cylindrical recess 3. A guide cylinder 5 is provided on the top of the rotating shaft body 4. A vertical groove 6 is opened on the right side of the guide cylinder 5. A cross section 7 is fixedly connected to the inner wall of the guide cylinder 5. A spring rod 8 is slidably installed on one side of the cross section 7 through an opening. A strip block 9 that cooperates with the vertical groove 6 is fixedly connected to the right end of the spring rod 8. A first spring 10 is fixedly connected to the left end of the spring rod 8. A straightening plate 11 is fixedly connected to the left end of the first spring 10. The cam ring plate 12 is sleeved on the surface of the guide cylinder 5. Furthermore, both sides of the limiting frame 2 are fixedly connected to polygonal rods 13 by fixing blocks. An arc-shaped frame 14 is slidably installed on the surface of the polygonal rod 13. A second spring 15 is sleeved on the surface of the polygonal rod 13, and an annular guide groove 23 that cooperates with the arc-shaped frame 14 is opened on the lower part of the surface of the guide cylinder 5.

[0017] Among them, an electric telescopic rod 16 is fixedly connected to the rear side of the bottom of the workbench 1. The top of the electric telescopic rod 16 is fixedly connected to a motor 17 through a bracket. The motor 17 is a servo motor. The output shaft of the motor 17 is fixedly connected to a rotating rod 19 that works with the guide cylinder 5 through a coupling. A sloping groove 20 that works with the straightening plate 11 is opened on the right side of the rotating rod 19. A top plate 18 is fixedly connected to the surface of the rotating rod 19. Pressure rods 21 that cooperate with the cam ring plate 12 are fixedly connected to both sides of the bottom of the top plate 18. Inclined pressure plates 22 that cooperate with the arc frame 14 are fixedly connected to both sides of the top plate 18.

[0018] In use, the operator first places the rotating shaft body 4 on top of the cylindrical recess 3, with the protrusion facing to the right. Then, the two arc-shaped brackets 14 are pried open back to back. Next, the guide cylinder 5 is placed on top of the rotating shaft body 4. After releasing, the two arc-shaped brackets 14 align with the annular guide groove 23 to limit the guide cylinder 5. Then, the operator quickly places the cam ring 12 onto the surface of the guide cylinder 5. At this time, the groove of the cam ring 12 is not aligned with the position of the protrusion on the rotating shaft body 4. Then, the electric telescopic rod 16 is activated to push the motor 17 and the rotating rod 19 down. First, the rotating rod 19 will insert into the inside of the guide cylinder 5. The rotating rod 19 presses the straightening plate 11, thereby compressing the first spring 10. At this time, the first spring 10 uses pressure to push the rebound rod 8 and... The strip block 9 moves outward, but it is blocked by the inner side of the cam ring plate 12 and cannot be fully ejected. Then the motor 17 starts and slowly drives the rotating rod 19 to rotate. As the guide cylinder 5 rotates, the strip block 9 is fully ejected when the vertical groove 6 coincides with the groove on the inner side of the cam ring plate 12 and connects with the groove on the inner side of the cam ring plate 12. At this time, the rotation of the guide cylinder 5 will drive the cam ring plate 12 to rotate synchronously, and then drive the cam ring plate 12 to rotate to the initial state of the guide cylinder 5. As the rotating rod 19 continues to descend, the inclined pressure plate 22 will first squeeze the arc frame 14 to separate the two arc frames 14 from the annular guide groove 23. Then the pressure rod 21 presses the cam ring plate 12 down and presses it on the surface of the cylindrical recess 3, thereby completing the pressing of the cam ring plate 12.

[0019] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A press fitting device of a variable cam ring, comprising a worktable (1) and a cam ring segment (12), characterized in that: The top of the workbench (1) is fixedly installed with a limit frame (2). The bottom of the inner cavity of the limit frame (2) is fixedly connected with a cylindrical recess (3). The top of the cylindrical recess (3) is provided with a rotating shaft body (4). The top of the rotating shaft body (4) is provided with a guide cylinder (5). A vertical groove (6) is opened on the right side of the guide cylinder (5). A cross section plate (7) is fixedly connected to the inner wall of the guide cylinder (5). A spring rod (8) is slidably installed on one side of the cross section plate (7) through an opening. A strip block (9) that cooperates with the vertical groove (6) is fixedly connected to the right end of the spring rod (8). A first spring (10) is fixedly connected to the left end of the spring rod (8). A straightening plate (11) is fixedly connected to the left end of the first spring (10). A cam ring plate (12) is sleeved on the surface of the guide cylinder (5).

2. A press fitting device for a variable cam ring according to claim 1, characterized in that: Both sides of the limiting frame (2) are fixedly connected to a multi-angled rod (13) by a fixing block. An arc frame (14) is slidably installed on the surface of the multi-angled rod (13). A second spring (15) is sleeved on the surface of the multi-angled rod (13), and an annular guide groove (23) is opened on the lower part of the surface of the guide cylinder (5) to cooperate with the arc frame (14).

3. A press fitting device of a variable cam ring according to claim 1, wherein: An electric telescopic rod (16) is fixedly connected to the rear side of the bottom of the workbench (1). A motor (17) is fixedly connected to the top of the electric telescopic rod (16) through a bracket. The output shaft of the motor (17) is fixedly connected to a rotating rod (19) that works with the guide cylinder (5) through a coupling.

4. A press fitting device for a variable cam ring according to claim 3, characterized in that: The rotating rod (19) has a sloping groove (20) on its right side that works in conjunction with the straightening plate (11).

5. A press fitting device for a variable cam ring according to claim 4, characterized in that: The rotating rod (19) is fixedly connected to a top plate (18), and pressure rods (21) that cooperate with the cam ring plate (12) are fixedly connected to both sides of the bottom of the top plate (18).

6. A press fitting device for a variable cam ring according to claim 5, characterized in that: Both sides of the top plate (18) are fixedly connected to inclined pressure plates (22) that cooperate with the arc frame (14).

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