Auxiliary tool for mounting retaining ring of mandrel

Abstract

The auxiliary tool comprises a fixed part, a sliding part and a plurality of opening parts, the axis of the fixed part coincides with the axis of a mandrel abutting against the fixed part, the sliding direction of the sliding part is parallel to the axis of the fixed part, and the end, close to the mandrel, of the fixed part is provided with an expansion part; the outer diameter of the expansion part is gradually increased along with approaching the mandrel, the maximum outer diameter of the expansion part is larger than the outer diameter of the mandrel approaching the fixing piece, the opening piece is arranged on the sliding piece in a sliding mode and arranged along the axis of the fixing piece, and the sliding direction of the opening piece is perpendicular to the axis of the fixing piece. The opening piece abuts against the outer wall of the expansion part and slides to push the steel cable baffle ring to move towards the mandrel. The steel wire baffle ring is arranged on the expansion part in a sleeving mode, the opening piece is used for pushing the steel wire baffle ring to move along the expansion part, the diameter of the steel wire baffle ring is increased through the expansion part, the steel wire baffle ring with the increased diameter is directly pushed to the mandrel, a crowbar does not need to be used when the steel wire baffle ring is arranged on the mandrel in a sleeving mode, and therefore abrasion of the surface of the mandrel is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of universal joint installation equipment, and in particular to a mandrel buckle ring installation auxiliary tooling. Background Art

[0002] As one of the core components of the automobile chassis drive system, the constant velocity universal joint generally includes a bell housing, a star-shaped sleeve arranged in the bell housing, and a steel ball arranged between the bell housing and the star-shaped sleeve. The center of the star-shaped sleeve is connected to the mandrel. In order to ensure that the star-shaped sleeve is firmly connected to the mandrel and can withstand sufficient pulling strength, a wire retaining ring is installed between the star-shaped sleeve and the mandrel to prevent the star-shaped sleeve from falling off the mandrel. Traditionally, a wire retaining ring groove is opened on the mandrel and the star-shaped sleeve, and an annular wire retaining ring is clamped in the wire retaining ring groove. After installation, the wire retaining ring is locked in the wire retaining ring groove.

[0003] When installing the current wire retaining ring, one end of the wire retaining ring is usually inserted into the wire retaining ring groove on the mandrel, and then a crowbar is pressed against the mandrel to apply force to the other end of the wire retaining ring, so that the two ends of the wire retaining ring are separated from each other, and then the wire retaining ring is pushed into the wire retaining ring groove. When installing the wire retaining ring in this process, the crowbar directly contacts the mandrel, which is easy to cause wear of the mandrel.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0005] In order to prevent the wire retaining ring from affecting the surface quality of the core shaft during installation, the present application provides a core shaft retaining ring installation auxiliary tooling.

[0006] The present application provides a mandrel retaining ring installation auxiliary tooling, which adopts the following technical solution:

[0007] A spindle retaining ring installation auxiliary tooling includes a fixing part abutting the end of the spindle, a sliding part sleeved on the fixing part, and a plurality of opening parts for pushing a wire retaining ring to expand, wherein the axis of the fixing part coincides with the axis of the spindle abutting it, the sliding direction of the sliding part is parallel to the axis of the fixing part, an expansion part is provided at one end of the fixing part close to the spindle, the outer diameter of the expansion part gradually increases as it approaches the spindle, the maximum outer diameter of the expansion part is larger than the outer diameter of the spindle close to the fixing part, the opening part is slidably arranged on the sliding part and the opening part is arranged along the axis of the fixing part, the sliding direction of the opening part is perpendicular to the axis of the fixing part, the opening part abuts against the outer wall of the expansion part to slide and push the wire retaining ring to move toward the spindle.

[0008] By adopting the above technical solution, the wire retaining ring is sleeved on the expansion part, and then the opening piece is used to push the wire retaining ring to move along the expansion part and the diameter of the wire retaining ring is increased with the help of the expansion part, and then the wire retaining ring with increased diameter is directly pushed onto the core shaft, so that there is no need to use a crowbar when the wire retaining ring is sleeved on the core shaft, thereby reducing the wear on the surface of the core shaft.

[0009] Optionally: an opening groove adapted to the wire retaining ring is arranged on the end face of the opening piece close to the core shaft, the axis of the opening groove coincides with the side wall of the opening piece close to the wire retaining ring, and the axis of the opening groove is arranged on the side of the side wall of the axis of the opening piece close to the fixing piece away from the fixing piece.

[0010] By adopting the above technical solution, the relative position of the wire retaining ring and the opening piece is limited by the opening groove, so that the wire retaining ring is not easily disconnected from the opening piece.

[0011] Optionally: the sliding member is provided with a first elastic member for pushing the opening member to move toward the fixing member.

[0012] By adopting the above technical solution, the opening member can be kept in a position close to the axis of the fixing member, so that when in use, the opening member only needs to be pushed toward the core shaft to achieve abutment against the wire retaining ring.

[0013] Optionally: a guide groove is provided on the end face of the sliding member close to the core shaft, one end of the opening member is arranged to slide in the guide groove, a guide member is detachably connected in the guide groove, the guide member is passed through the opening member and the opening member and the guide member are slidably matched, and the first elastic member is arranged in the guide groove.

[0014] By adopting the above technical solution, the guide member can be removed to achieve the disassembly of the opening member from the sliding member, and different wire retaining rings can be installed by changing the size of the opening member.

[0015] Optionally: a second elastic member is provided between the fixing member and the sliding member to push the sliding member to move away from the core shaft, and a limit retaining ring is also provided on the fixing member, and the limit retaining ring abuts against the end face of the sliding member away from the expansion portion.

[0016] By adopting the above technical solution, the second elastic member can be used to limit the relative positions of the fixing member and the sliding member when no force is applied. When the wire retaining ring is installed on the expansion part, there is no need to limit the positions of the fixing member and the sliding member, thereby making the installation of the wire retaining ring more convenient.

[0017] Optionally: A limit member is coaxially fixed on the sliding member to limit the distance it moves toward the core shaft. The limit member is sleeved outside the fixing member, and a sliding groove for the movement of a limit ring is coaxially opened inside the limit member. The limit ring can abut against the end face of the sliding groove away from the expansion part.

[0018] By adopting the above technical solution, the moving distance of the sliding member can be limited when the sliding member moves toward the core shaft, so that the wire retaining ring can be stably sleeved on the core shaft.

[0019] Optionally: a gripping groove is provided on the outer wall of the limiting member.

[0020] By adopting the above technical solution, when pushing the sliding member to move, force can be directly applied to the side wall of the gripping portion close to the sliding member, thereby making the movement of the sliding member more labor-saving.

[0021] Optionally: a positioning cone is coaxially arranged on the end face of the fixing member close to the core shaft, and the positioning cone can be inserted into a preset tapered hole on the core shaft.

[0022] By adopting the above technical solution, the positioning cone is used to make the axis of the fixing member coincide with the axis of the core shaft, so that the wire retaining ring can be stably sleeved on the core shaft.

[0023] Optionally: a retraction groove is coaxially provided on the end surface of the fixing member close to the core shaft, the diameter of the retraction groove is larger than the diameter of the end surface of the core shaft abutted by the fixing member, and the positioning cone is arranged in the retraction groove.

[0024] By adopting the above technical solution, the distance between the wire retaining ring groove and the maximum diameter of the expansion part is reduced by using the retracted groove, so that the wire retaining ring can enter the wire retaining ring groove on the core shaft more quickly after being separated from the fixing member.

[0025] Optionally: the fixing member includes a fixing portion slidingly arranged in the sliding member and an abutting portion detachably connected to the fixing portion, and the expansion portion, the retraction groove and the positioning cone are all arranged on the outer wall of the abutting portion.

[0026] By adopting the above technical solution, different wire retaining rings can be installed by changing the size of the abutment portion.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] The wire retaining ring is pushed to move along the expansion part by the opening piece, so that the diameter of the wire retaining ring is changed by utilizing the expansion part, and then the wire retaining ring with enlarged diameter is directly sleeved on the core shaft, thereby eliminating the need to use a crowbar to expand the diameter of the wire retaining ring and reducing the wear of the core shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic diagram of the structure of an embodiment of the present application;

[0030] Figure 2 This is a schematic diagram for illustrating the connection relationship between the fixing member and the sliding member in an embodiment of the present application;

[0031] Figure 3 for Figure 2 A magnified view of part A;

[0032] Figure 4 for Figure 2 Enlarged view of part B.

[0033] In the figure, 1, fixing member; 11, fixing part; 111, connecting groove; 12, abutting part; 121, expansion part; 122, retracting groove; 13, connecting block; 14, positioning cone; 15, guide ring; 151, guide block; 16, second elastic member; 17, limit retaining ring; 2, sliding member; 21, mounting block; 211, guide groove; 22, guide member; 23, first elastic member; 24, yielding groove; 241, guide groove; 25, limit member; 251, holding groove; 252, convex ring; 253, sliding groove; 3, opening member; 31, opening block; 311, opening groove; 32, sliding block. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application discloses a mandrel retaining ring installation auxiliary tool, such as Figure 1 As shown, it includes a fixing member 1 that abuts on the mandrel for positioning, a sliding member 2 that is sleeved on the outside of the fixing member 1 and slides, and two opening members 3 that push the wire retaining ring to expand. The fixing member 1 includes a fixing portion 11 and an abutting portion 12 that is detachably connected to the fixing portion 11. The fixing portion 11 and the abutting portion 12 are coaxially arranged. A connecting block 13 is integrally formed at one end of the abutting portion 12 close to the positioning portion. A connecting groove 111 is provided on the end surface of the fixing portion 11 close to the abutting portion 12. The connecting block 13 is clamped in the connecting groove 111, and the length of the connecting block 13 is greater than the depth of the connecting groove 111. A fastening screw is threadedly connected to the side wall of the fixing portion 11. The fastening screw is inserted into the connecting groove 111 and abuts against the connecting block 13, thereby realizing a detachable connection between the abutting portion 12 and the fixing portion 11.

[0036] An expansion portion 121 is provided on the side wall of the abutment portion 12, and the outer diameter of the expansion portion 121 gradually increases as it moves away from the fixed portion 11. The maximum outer diameter of the expansion portion 121 is equal to the diameter of the abutment portion 12. The diameter of the abutment portion 12 is larger than the outer diameter of the core shaft it abuts against, and a gap is left at the maximum diameter of the expansion portion 121 from the end of the abutment portion 12 away from the fixed portion 11.

[0037] A retraction groove 122 is coaxially provided on the end surface of the abutting portion 12 away from the fixing portion 11. The diameter of the retraction groove 122 is larger than the diameter of the core shaft, and the inner wall of the retraction groove 122 is inclined toward the axial direction of the fixing portion 11 at one end close to the fixing portion 11. When the abutting portion 12 is abutted against the core shaft, the core shaft is easier to insert into the retraction groove 122.

[0038] A positioning cone 14 is coaxially fixed in the retracted groove 122. The positioning cone 14 can be inserted into a tapered hole provided on the end face of the mandrel, so that the abutment does not coincide with the axis of the mandrel, making it easier for the wire retaining ring to be sleeved on the mandrel.

[0039] like Figure 3 As shown, two mounting blocks 21 are circumferentially arranged on the end surface of the sliding member 2 close to the mandrel, and guide grooves 211 are provided on the end surfaces of the two mounting blocks 21 away from the sliding member 2. The opening member 3 includes an opening block 31 arranged perpendicular to the axis of the fixing portion 11 and a sliding block 32 integrally formed at one end of the opening block 31 away from the axis of the fixing portion 11, the sliding block 32 is arranged parallel to the axis of the fixing portion 11, and the sliding block 32 is arranged to slide in the guide groove 211, and the opening block 31 can abut against the expansion portion 121, so that when the opening block 31 moves in a direction away from the fixing portion 11, it can drive the wire retaining ring sleeved on the expansion portion 121 to move along the expansion portion 121, and the expansion portion 121 is used to increase the diameter of the wire retaining ring, so that the wire retaining ring is easier to sleeve on the mandrel.

[0040] The mounting block 21 is provided with a guide member 22, which is a cylindrical pin in this embodiment. The axis of the guide member 22 is parallel to the moving direction of the sliding block 32. The guide member 22 is provided in the sliding block 32 and the two are slidably matched. The guide member 22 is also provided with a first elastic member 23 for pushing the opening block 31 to move toward the expansion portion 121. The first elastic member 23 is a spring in this embodiment. One end of the first elastic member 23 abuts against the side wall of the guide groove 211 away from the axis of the fixing portion 11, and the other end of the first elastic member 23 abuts against the side wall of the sliding block 32 away from the axis of the fixing portion 11.

[0041] In order to ensure that the opening block 31 can stably abut against the wire retaining ring when the opening block 31 pushes the wire retaining ring to move, an opening groove 311 adapted to the wire retaining ring is provided on the side wall of the opening block 31 away from the fixed plate, the axis of the opening groove 311 is arranged on the side wall of the opening block 31 away from the fixed part 11, and the axis of the opening groove 311 is arranged on the side of the side wall of the opening block 31 close to the fixed part 11 away from the fixed part 11, and the distance between the axis of the opening groove 311 and the side wall of the opening block 31 close to the fixed part 11 is less than the radius of the opening groove 311. When the opening block 31 pushes the wire retaining ring to move, part of the structure of the wire retaining ring can be embedded in the opening groove 311, so that the wire retaining ring and the opening block 31 are not easily separated.

[0042] like Figure 1 and Figure 2 As shown, a clearance groove 24 is coaxially provided on the inner wall of the sliding member 2, and the clearance groove 24 penetrates the end face of the sliding member 2 close to the abutting portion 12, and a plurality of guide grooves 241 are also provided on the inner wall of the clearance groove 24. A guide ring 15 is coaxially integrally formed on the fixed portion 11, and the guide ring 15 is arranged to slide in the clearance groove 24, and a guide block 151 is integrally formed on the outer wall of the guide ring 15, and the guide block 151 is embedded in the guide groove 241 and slides. A second elastic member 16 for pushing the sliding member 2 to move away from the core shaft is also provided on the fixed member 1. The second elastic member 16 is a spring in this embodiment, and the second elastic member 16 is provided in the clearance groove 24, and one end of the second elastic member 16 abuts on the side wall of the fixed portion 11 away from the abutting portion 12, and the other end of the second elastic member 16 abuts on the side wall of the clearance groove 24 away from the abutting portion 12.

[0043] like Figure 4 As shown, a limit ring 17 is coaxially clamped on the fixed part 11, and the limit ring 17 can abut against the end face of the sliding member 2 away from the core shaft, and when the limit ring 17 abuts against the sliding member 2, the starting member is arranged between the abutting part 12 and the fixed part 11.

[0044] A limit member 25 is also coaxially installed on the sliding member 2. The limit member 25 is sleeved outside the fixed part 11. A sliding groove 253 is opened on the inner wall of the limit member 25. The sliding groove 253 penetrates the side wall of the limit member 25 close to the sliding member 2. The limit retaining ring 17 is arranged in the sliding groove and can slide in the sliding groove. When the limit retaining ring 17 abuts against the side wall of the sliding groove away from the sliding member 2, the opening member 3 moves to the side of the positioning cone 14 away from the fixed part 11.

[0045] like Figure 2 As shown, a gripping groove 251 is coaxially provided on the outer wall of the position-limiting member 25, and the gripping groove 251 penetrates the end of the position-limiting member 25 away from the sliding member 2, so that when the gripping groove 251 is held and the sliding member 2 is pushed, force can be directly applied to the end surface of the gripping groove 251 close to the sliding member 2, making the movement of the sliding member 2 more labor-saving. A convex ring 252 is coaxially provided on the end of the gripping groove 251 away from the position-limiting member 25, and the convex ring 252 is arranged in an arc away from the axis of the position-limiting member 25, so that force can also be applied to the convex ring 252 to drive the sliding member 2 to move in a direction away from the core axis.

[0046] The implementation principle of this embodiment is: the opening of the wire retaining ring is sleeved on the connecting block 13 and moved to be sleeved on the expansion part 121, then the holding groove 251 is held, the positioning cone 14 is aligned with the tapered hole on the core shaft, and then the sliding member 2 is pushed toward the core shaft, the opening member 3 abuts against the spring retaining ring and pushes the spring retaining ring to move along the expansion part 121 toward the core shaft, and then the opening member 3 is continued to be pushed to move the spring retaining ring onto the core shaft.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mandrel retaining ring installation auxiliary tool, characterized in that: The invention comprises a fixing member (1) abutting against the end of a core shaft, a sliding member (2) sleeved on the fixing member (1), and a plurality of opening members (3) for pushing the steel wire retaining ring to expand, wherein the axis of the fixing member (1) coincides with the axis of the core shaft abutted therewith, the sliding direction of the sliding member (2) is parallel to the axis of the fixing member (1), an expansion portion (121) is arranged at one end of the fixing member (1) close to the core shaft, the outer diameter of the expansion portion (121) gradually increases as it approaches the core shaft, the maximum outer diameter of the expansion portion (121) is greater than the outer diameter of the core shaft close to the fixing member (1), the opening member (3) is slidably arranged on the sliding member (2) and the opening member (3) is arranged along the axis of the fixing member (1), the sliding direction of the opening member (3) is perpendicular to the axis of the fixing member (1), the opening member (3) abuts against the outer wall of the expansion portion (121) to slide and push the steel wire retaining ring to move toward the core shaft.

2. The mandrel retaining ring installation auxiliary tool according to claim 1, characterized in that: An opening groove (311) adapted to the wire retaining ring is arranged on the end surface of the opening member (3) close to the core shaft, the axis of the opening groove (311) coincides with the side wall of the opening member (3) close to the wire retaining ring, and the axis of the opening groove (311) is arranged on the side of the side wall of the opening member (3) close to the axis of the fixing member (1) away from the fixing member (1).

3. The mandrel retaining ring installation auxiliary tool according to claim 2, characterized in that: The sliding member (2) is provided with a first elastic member (23) for pushing the opening member (3) to move towards the fixing member (1).

4. The mandrel retaining ring installation auxiliary tool according to claim 3, characterized in that: A guide groove (211) is provided on the end surface of the sliding member (2) close to the core shaft, one end of the opening member (3) is arranged to slide in the guide groove (211), a guide member (22) is detachably connected in the guide groove (211), the guide member (22) is inserted into the opening member (3), and the opening member (3) and the guide member (22) are slidably matched, and the first elastic member (23) is arranged in the guide groove (211).

5. The mandrel retaining ring installation auxiliary tool according to claim 1, characterized in that: A second elastic member (16) is also provided between the fixed member (1) and the sliding member (2) for pushing the sliding member (2) to move away from the core shaft. A limit retaining ring (17) is also provided on the fixed member (1), and the limit retaining ring (17) abuts against the end surface of the sliding member (2) away from the expansion portion (121).

6. The mandrel retaining ring installation auxiliary tool according to claim 5, characterized in that: A limit member (25) is coaxially fixed on the sliding member (2) to limit the distance it can move toward the core shaft. The limit member (25) is sleeved outside the fixing member (1). A sliding groove (253) for the movement of the limit retaining ring (17) is coaxially provided inside the limit member (25). The limit retaining ring (17) can abut against the end surface of the sliding groove (253) away from the expansion portion (121).

7. The mandrel retaining ring installation auxiliary tool according to claim 6, characterized in that: The outer wall of the limiting member (25) is provided with a gripping groove (251).

8. The mandrel retaining ring installation auxiliary tool according to claim 1, characterized in that: A positioning cone (14) is coaxially arranged on the end surface of the fixing member (1) close to the core shaft, and the positioning cone (14) can be inserted into a preset tapered hole on the core shaft.

9. The mandrel retaining ring installation auxiliary tool according to claim 8, characterized in that: A retraction groove (122) is coaxially formed on the end surface of the fixing member (1) close to the core shaft, the diameter of the retraction groove (122) being larger than the diameter of the end surface of the core shaft abutted by the fixing member (1), and the positioning cone (14) is arranged in the retraction groove (122).

10. The mandrel retaining ring installation auxiliary tool according to claim 9, characterized in that: The fixing member (1) comprises a fixing portion (11) arranged to slide inside the sliding member (2) and a contact portion (12) detachably connected to the fixing portion (11); the expansion portion (121), the retracted groove (122) and the positioning cone (14) are all arranged on the outer wall of the contact portion (12).

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