Special cam shaft press-fitting thread rolling equipment
By designing the encircling structure of special camshaft press-mounted wire rolling equipment, the thread damage and indentation problems caused by the symmetrical structure of the central frame of the hob stand are solved, and the efficient camshaft press-mounted and wire rolling process is achieved, improving product quality and production efficiency.
Patent Information
- Application Number
- CN202422256975.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The symmetrical structure of the central frame of the existing camshaft rolling wires is prone to damage the thread and cause indentation during pressing, affecting product quality and may not be installed, reducing production efficiency.
A special camshaft press-mounted wire rolling equipment is designed, adopting three hobs embracing structures. Through the coordination of the moving oblique blocks and guide rails, the three hobs can be synchronized rotation and sliding, and the camshaft is fixed from three directions respectively to avoid damage to the thread and indentation.
Improve the product quality of the camshaft, avoid the problem of inability to install, and improve production efficiency.
Smart Images
Figure CN223145876U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machining equipment, in particular to a special camshaft press-fitting and thread rolling equipment. Background Art
[0002] The camshaft is an important component in the engine. During operation, it can control the opening and closing of the valve. When machining the camshaft, thread rolling is required for it, so a hob holder needs to be used for press-fitting and thread rolling.
[0003] At present, the center frame of the hob holder used for camshaft thread rolling mostly has a symmetrical structure. When press-fitting, two hobs are relied on to press-fit the camshaft. However, the two force points generated by using two hobs are prone to produce indentations and damage the thread, affecting the product quality. Moreover, sometimes it is also prone to the problem of failure to press-fit, affecting the production efficiency. Summary of the Utility Model
[0004] The utility model provides a special camshaft press-fitting and thread rolling equipment. Its three force points are not easy to damage the thread and produce indentations during the thread rolling and press-fitting processes, improving the product quality. Moreover, the problem of failure to install will not occur, improving the production efficiency.
[0005] In the first aspect of the present disclosure, a special camshaft press-fitting and thread rolling equipment is provided, specifically including: a press-fitting housing;
[0006] A motor is installed on the left side of the press-fitting housing; a speed reducer is installed on the right side of the motor; a coupling is installed on the right side of the speed reducer; a lead screw is arranged on the right side of the coupling; a guide rail is fixed inside the press-fitting housing; a moving inclined block is installed outside the lead screw and the guide rail; two hob arms are rotatably installed on the right side inside the press-fitting housing; a hob is rotatably installed at the right end of each hob arm.
[0007] In at least some embodiments, a threaded hole matching the lead screw is provided on the left side inside the moving inclined block, and a cylindrical hole is provided on the right side inside the moving inclined block, and the inner diameter of the cylindrical hole is equal to the outer diameter of the guide rail.
[0008] In at least some embodiments, the right side part of the moving inclined block is of a conical structure, a roller is rotatably installed at the left end of each hob arm, and the rollers at the left ends of the hob arms are closely attached to the outer wall of the right side part of the moving inclined block.
[0009] In at least some embodiments, a strip-shaped protrusion is provided on the inner walls of the front and rear sides of the cylindrical hole on the right side of the moving inclined block, and a corresponding strip-shaped guide groove is also provided on the front and rear sides of the guide rail, and the strip-shaped protrusions on the inner walls of the front and rear sides of the cylindrical hole on the right side of the moving inclined block can slide left and right in the strip-shaped guide grooves on the front and rear sides of the guide rail.
[0010] In at least some embodiments, a hob is also rotatably installed at the middle position on the right side of the press-fitting housing, and two hob arms are symmetrically installed on the front and rear sides of the hob at the middle position on the right side of the press-fitting housing.
[0011] In at least some embodiments, the moving inclined block is an iron block, and the rollers at the left ends of the hob arms are all magnet rollers.
[0012] In at least some embodiments, the main body part of the guide rail is a cylindrical rod, a cylindrical hole is provided on the right side of the lead screw, and the left part of the guide rail is embedded in the cylindrical hole on the right side of the lead screw.
[0013] The utility model provides a special camshaft press-fitting and thread-rolling equipment, which has the following beneficial effects:
[0014] The three hobs in the utility model integrally form an embracing structure. When press-fitting the camshaft, the three hobs can fix it in three directions respectively. The three force points are not easy to damage the thread and generate indentation during the thread-rolling and press-fitting processes, improving the product quality, and there will be no problem of not being able to install, improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.
[0016] The drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.
[0017] In the drawings:
[0018] Figure 1 A top view schematic diagram showing the overall structure of the present application is shown;
[0019] Figure 2 A top view schematic diagram showing the press-fitting housing after sectioning in the present application is shown;
[0020] Figure 3 A top view schematic diagram showing the press-fitting housing after sectioning and the moving inclined block sliding to the left in the present application is shown;
[0021] Figure 4 An axonometric schematic diagram showing the lead screw and the moving inclined block after sectioning in the present application is shown;
[0022] Figure 5 An axonometric schematic diagram showing the moving inclined block after sectioning in the present application is shown;
[0023] LIST OF REFERENCE NUMERALS
[0024] 1. Press-fitting housing; 2. Motor; 3. Reducer; 4. Coupling; 5. Lead screw; 6. Guide rail; 7. Moving inclined block; 8. Hob arm; 9. Hob. Detailed implementation manners
[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0026] Embodiment 1: Please refer to Figures 1 to 5 :
[0027] The present utility model provides a special camshaft press-fitting rolling equipment, including: a press-fitting housing 1;
[0028] A motor 2 is installed on the left side of the press-fitting housing 1. During use, the press-fitting housing 1 of the equipment can be installed on a support base. The motor 2 is used to drive the screw rod 5 to rotate; a speed reducer 3 is installed on the right side of the motor 2. When the motor 2 rotates, the speed reducer 3 will decelerate it; a coupling 4 is installed on the right side of the speed reducer 3. The coupling 4 is used to connect the speed reducer 3 and the screw rod 5; a screw rod 5 is arranged on the right side of the coupling 4. When the screw rod 5 rotates, it can drive the moving inclined block 7 to move left and right under the support of the guide rail 6 through the thread; a guide rail 6 is fixed inside the press-fitting housing 1. The guide rail 6 is used to slidably support the moving inclined block 7; a moving inclined block 7 is installed outside the screw rod 5 and the guide rail 6. During the left and right sliding process of the moving inclined block 7, the two hob arms 8 can be synchronously rotated, so that the camshaft can be press-fitted and released; two hob arms 8 are rotatably installed on the right side inside the press-fitting housing 1. The hob arms 8 are used to support the hobs 9; a hob 9 is rotatably installed at the right end of each hob arm 8. The hob 9 is used to press-fit and fix the camshaft.
[0029] In the embodiments of the present disclosure, as Figure 2 - Figure 5 shown, a threaded hole matching the screw rod 5 is provided on the left side inside the moving inclined block 7, and a cylindrical hole is provided on the right side inside the moving inclined block 7, and the inner diameter of the cylindrical hole is equal to the outer diameter of the guide rail 6. Therefore, when the screw rod 5 rotates, it can drive the moving inclined block 7 to move left and right under the support of the guide rail 6 through the thread.
[0030] In the embodiments of the present disclosure, as Figure 2 - Figure 5As shown, the right side of the moving inclined block 7 is a conical structure. A roller is rotatably installed at the left end of each hob arm 8, and the rollers at the left ends of the hob arms 8 are in close contact with the outer wall of the right side of the moving inclined block 7. During the left-right sliding process of the moving inclined block 7, the two hob arms 8 can be synchronously rotated, so that the camshaft can be pressed and released. Moreover, the contact between the rollers at the left ends of the hob arms 8 and the outer wall of the moving inclined block 7 can reduce the friction force.
[0031] In the embodiment of the present disclosure, as Figure 4 and Figure 5 shown, a strip-shaped protrusion is provided on the inner walls of the front and rear sides of the cylindrical hole on the right side of the moving inclined block 7, and a corresponding strip-shaped guide groove is also provided on the front and rear sides of the guide rail 6. The strip-shaped protrusions on the inner walls of the front and rear sides of the cylindrical hole on the right side of the moving inclined block 7 can slide left and right in the strip-shaped guide grooves on the front and rear sides of the guide rail 6. Therefore, the moving inclined block 7 cannot rotate outside the guide rail 6. And because the moving inclined block 7 cannot rotate outside the guide rail 6, when the lead screw 5 rotates, it can push the moving inclined block 7 to slide left and right under the support of the guide rail 6 through the thread.
[0032] In the embodiment of the present disclosure, as Figure 1 - Figure 3 shown, a hob 9 is also rotatably installed at the middle position on the right side of the pressing housing 1. The two hob arms 8 are symmetrically installed on the front and rear sides of the hob 9 at the middle position on the right side of the pressing housing 1. When the camshaft needs to be pressed and rolled, first place the camshaft directly to the right of the hob 9 at the middle position on the right side of the pressing housing 1, and then control the motor 2 to rotate forward. When the lead screw 5 rotates forward, it can push the moving inclined block 7 to slide right under the support of the guide rail 6 through the thread. During the rightward sliding process of the moving inclined block 7, the two hob arms 8 can be synchronously rotated, and at this time, the hobs 9 at the right ends of the two hob arms 8 will gradually approach, so that the three hobs 9 can jointly complete the pressing of the camshaft.
[0033] In the embodiment of the present disclosure, as Figure 2 - Figure 4 shown, the main body part of the guide rail 6 is a cylindrical rod, a cylindrical hole is provided on the right side of the lead screw 5, and the left part of the guide rail 6 is embedded in the cylindrical hole on the right side of the lead screw 5. Therefore, when the lead screw 5 rotates, it will not conflict with the guide rail 6, and the lead screw 5 can also mutually assist and support the left part of the guide rail 6 to improve the overall stability.
[0034] Embodiment 2, on the basis of Embodiment 1, as Figure 1 - Figure 5As shown, the moving inclined block 7 is an iron block, and the rollers at the left end of the hob arm 8 are all magnet rollers. When the camshaft needs to be removed after processing, the motor 2 can be controlled to rotate in the reverse direction to drive the lead screw 5 to rotate in the reverse direction. When the lead screw 5 rotates in the reverse direction, it will drive the moving inclined block 7 to slide leftward under the support of the guide rail 6 through the thread. Since the magnet rollers at the left end of the hob arm 8 will adsorb to the moving inclined block 7 at this time, the hob arm 8 will still rotate synchronously, and the hobs 9 at the right ends of the two hob arms 8 will gradually move away from each other at this time. Therefore, the camshaft can be loosened.
[0035] The working principle of this embodiment: When in use, the pressing housing 1 of this equipment can be installed on the support base. When the camshaft needs to be pressed and rolled, first place the camshaft directly to the right of the hob 9 at the middle position on the right side of the pressing housing 1, and then control the motor 2 to rotate forward. When the motor 2 rotates, the speed reducer 3 will decelerate it, and then drive the lead screw 5 to rotate forward through the coupling 4. Since the moving inclined block 7 cannot rotate outside the guide rail 6, when the lead screw 5 rotates forward, it can push the moving inclined block 7 to slide rightward under the support of the guide rail 6 through the thread. During the process of the moving inclined block 7 sliding rightward, the two hob arms 8 can be made to rotate synchronously, and the hobs 9 at the right ends of the two hob arms 8 will gradually approach each other at this time. Therefore, the three hobs 9 can jointly complete the pressing of the camshaft, and then the camshaft can be processed. When the camshaft needs to be removed after processing, the motor 2 can be controlled to rotate in the reverse direction to drive the lead screw 5 to rotate in the reverse direction. When the lead screw 5 rotates in the reverse direction, it will drive the moving inclined block 7 to slide leftward under the support of the guide rail 6 through the thread. Since the magnet rollers at the left end of the hob arm 8 will adsorb to the moving inclined block 7 at this time, the hob arm 8 will still rotate synchronously, and the hobs 9 at the right ends of the two hob arms 8 will gradually move away from each other at this time. Therefore, the camshaft can be loosened, and then the processed camshaft can be removed.
[0036] In this article, the following points need to be noted:
[0037] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.
[0038] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0039] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.
Claims
1. A special camshaft press-fitting thread rolling equipment, comprising: Press-fitting housing (1); characterized in that: A motor (2) is installed on the left side of the press-fitting housing (1); a speed reducer (3) is installed on the right side of the motor (2); a coupling (4) is installed on the right side of the speed reducer (3); a lead screw (5) is arranged on the right side of the coupling (4); a guide rail (6) is fixed inside the press-fitting housing (1); a moving inclined block (7) is installed outside the lead screw (5) and the guide rail (6); two hob arms (8) are rotatably installed on the right side inside the press-fitting housing (1); a hob (9) is rotatably installed at the right end of each of the hob arms (8).
2. A special camshaft press-fitting and thread-rolling equipment according to claim 1, characterized in that The right side part of the moving inclined block (7) is of a conical structure, a roller is rotatably installed at the left end of each of the hob arms (8), and the rollers at the left end of the hob arms (8) are closely attached to the outer wall of the right side part of the moving inclined block (7).
3. A special camshaft press-fitting and thread-rolling equipment according to claim 1, characterized in that A hob (9) is also rotatably installed at the middle position on the right side of the press-fitting housing (1), and the two hob arms (8) are symmetrically installed on the front and rear sides of the hob (9) at the middle position on the right side of the press-fitting housing (1).
4. A special camshaft press-fitting and thread-rolling equipment according to claim 1, characterized in that The main body part of the guide rail (6) is a cylindrical rod, a cylindrical hole is arranged on the right side of the lead screw (5), and the left side part of the guide rail (6) is embedded in the cylindrical hole on the right side of the lead screw (5).
5. A special camshaft press-fitting and thread-rolling equipment according to claim 1, characterized in that A threaded hole matching the lead screw (5) is arranged on the left side inside the moving inclined block (7), a cylindrical hole is arranged on the right side inside the moving inclined block (7), and the inner diameter of the cylindrical hole is equal to the outer diameter of the guide rail (6).
6. A special camshaft press-fitting and thread-rolling equipment according to claim 1, characterized in that A strip-shaped protrusion is arranged on the inner wall of the front and rear sides of the cylindrical hole on the right side of the moving inclined block (7), a corresponding strip-shaped guide groove is also arranged on the front and rear sides of the guide rail (6), and the strip-shaped protrusions on the inner wall of the front and rear sides of the cylindrical hole on the right side of the moving inclined block (7) can slide left and right in the strip-shaped guide grooves on the front and rear sides of the guide rail (6).
7. A special camshaft press-fitting and thread-rolling equipment according to claim 1, characterized in that The moving inclined block (7) is an iron block, and the rollers at the left end of the hob arms (8) are all magnet rollers.