Wear-resistant cam
By designing a combination of annular belt and balls, extrusion blocks and lubricants in the cam, the problem of high replacement costs due to wear of existing cam is solved, and the wear resistance and service life of the cam are achieved.
Patent Information
- Application Number
- CN202420974181.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The outer peripheral side of the existing cam will wear after a long period of use, resulting in a mismatch in size and the entire cam needs to be replaced, which increases the cost of use.
A wear-resistant cam is designed with an annular belt and a ball, the ball is movable connection, and there is an extrusion block and lubricant in the storage cavity. The ball is lubricated through the extrusion outlet and the ball is pressed through the annular belt and ball. The work is completed and can be replaced when the annular belt is worn without the need for a whole cam replacement.
Extends the cam's life, reduces replacement costs, and reduces ball wear by applying lubricant evenly.
Smart Images
Figure CN222163450U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of cams, and in particular relates to a wear-resistant cam. Background Art
[0002] A cam is a mechanical rotating or sliding part (such as a wheel or a protruding part of a wheel) which transmits motion to a roller moving close to its edge or to a needle bar moving freely on a groove, or which receives force from such rollers and needle bars.
[0003] Nowadays, most cams are integrally formed. After long-term use, the outer peripheral side will be worn and consumed, which affects the use of the cam. After wear, the size cannot be matched, so the entire cam needs to be replaced, which greatly increases the cost of using the cam. Utility Model Content
[0004] The utility model aims at the deficiencies of the prior art and provides a wear-resistant cam.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a wear-resistant cam, comprising a cam, characterized in that: a wear-resistant component is provided in the cam;
[0006] The wear-resistant component includes an annular belt rotating on the outer peripheral side of the cam, and a plurality of balls are movably connected inside the cam. A storage cavity is also opened in the cam, and an extrusion block is slidably arranged in the storage cavity. The storage cavity is provided with at least two extrusion ports, and lubricant is extruded through the extrusion ports to lubricate the balls.
[0007] Optionally, part of the cam is provided as a convexity, the storage cavity is provided in the convexity of the cam, and an inner sliding groove is provided on the outer peripheral side of the cam.
[0008] Optionally, the extrusion port is connected to the storage cavity and the inner slide groove, and the storage cavity is filled with lubricant.
[0009] Optionally, an outer slide groove is provided on the inner wall of the annular belt, an annular cavity is formed between the outer slide groove and the inner slide groove, and the ball is located in the annular cavity.
[0010] Optionally, a filling hole is provided on one end surface of the cam, the filling hole is communicated with the storage cavity, and a sealing plug is threadedly connected to the filling hole.
[0011] In summary, compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. Due to the setting of the wear-resistant component, the ball can abut against the annular belt and then abut against the external parts, which can also replace the integrally formed cam to complete its work.
[0013] 2. Moreover, by setting the annular belt, it is the annular belt that is worn and consumed when the cam rotates. When the annular belt is worn, the cam can be continued to be used by replacing the annular belt without replacing the entire cam, which greatly reduces its cost.
[0014] 3. The centripetal force generated by the rotation of the cam can squeeze out the lubricant in the storage chamber, and the rolling balls can evenly spread the outflowing lubricant on the balls to lubricate them, greatly reducing their wear and tear and extending the service life of the cam. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional diagram of the utility model.
[0016] Figure 2 It is a cross-sectional view of the utility model.
[0017] 10. Cam; 11. Annular belt; 12. Inner slide groove; 13. Ball; 14. Outer slide groove; 15. Storage chamber; 16. Extrusion block; 17. Sealing plug; 18. Extrusion outlet. DETAILED DESCRIPTION
[0018] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.
[0019] As shown in Figure 1-2, a wear-resistant cam includes a cam 10, which is characterized in that: a wear-resistant component is arranged inside the cam 10, the wear-resistant component includes an annular belt 11 rotating on the outer peripheral side of the cam 10, and a plurality of balls 13 are movably connected inside the cam 10. A storage cavity 15 is also provided in the cam 10, and an extrusion block 16 is slidably provided in the storage cavity 15. At least two extrusion ports 18 are provided in the storage cavity 15, and lubricant is extruded through the extrusion ports 18 to lubricate the balls 13. A filling hole is provided on one end face of the cam 10, and the filling hole is connected to the storage cavity 15. A sealing plug 17 is threadedly connected to the filling hole.
[0020] The cam 10 is provided with a raised portion, the storage chamber 15 is provided in the raised portion of the cam 10, an inner groove 12 is provided on the outer peripheral side of the cam 10, an extrusion port 18 connects the storage chamber 15 and the inner groove 12, the storage chamber 15 is filled with lubricant, an outer groove 14 is provided on the inner wall of the annular belt 11, an annular cavity is formed between the outer groove 14 and the inner groove 12, and the ball 13 is located in the annular cavity.
[0021] When in use, the cam 10 is mounted on the output shaft. When the output shaft drives the cam 10 to rotate, the cam 10 can complete its work by abutting against external parts through the raised part of the cam 10. During the rotation of the cam 10, the ball 13 abuts against the annular belt 11, and then abuts against external parts, which can also replace the integrally formed cam 10 to complete its work. However, it is the annular belt 11 that is worn out when the cam 10 rotates. When the annular belt 11 is worn out, the cam 10 can be continued to be used by replacing the annular belt 11 without replacing the entire cam, which greatly reduces its Cost, and when the cam 10 rotates, the extrusion block 16 can be moved to the side away from the center of the cam 10 through the centripetal force, so as to squeeze the lubricant in the storage chamber 15 and make it flow out through the extrusion port 18. Then the cam 10 rotates, which will drive the ball 13 to roll. The rolling of the ball 13 can evenly apply the outflowing lubricant on the ball 13 to lubricate it, greatly reducing its wear and tear and extending the service life of the cam 10. When the lubricant in the storage chamber 15 is used up, new lubricant can be injected into the storage chamber 15 by opening the sealing plug 17.
[0022] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
Claims
1. A wear-resistant cam, comprising a cam (10), characterized in that: A wear-resistant component is provided in the cam (10); The wear-resistant component comprises an annular belt (11) rotating on the outer peripheral side of the cam (10), a plurality of balls (13) are movably connected inside the cam (10), a storage cavity (15) is also provided inside the cam (10), an extrusion block (16) is slidably provided inside the storage cavity (15), and at least two extrusion ports (18) are provided inside the storage cavity (15), and lubricant is extruded through the extrusion ports (18) to lubricate the balls (13).
2. A wear-resistant cam according to claim 1, characterized in that: The portion of the cam (10) is arranged as a convex portion, the storage cavity (15) is arranged in the convex portion of the cam (10), and an inner sliding groove (12) is provided on the outer peripheral side of the cam (10).
3. A wear-resistant cam according to claim 2, characterized in that: The extrusion port (18) is in communication with the storage cavity (15) and the inner slide groove (12), and the storage cavity (15) is filled with lubricant.
4. The wear-resistant cam according to claim 2, characterized in that: An outer slide groove (14) is provided on the inner wall of the annular belt (11), an annular cavity is formed between the outer slide groove (14) and the inner slide groove (12), and the ball (13) is located in the annular cavity.
5. The wear-resistant cam according to claim 1, characterized in that: A filling hole is provided on one end surface of the cam (10), the filling hole is in communication with the storage chamber (15), and a sealing plug (17) is threadedly connected to the filling hole.