Moving arc contact chamfering tool
By combining the limiting sleeve and the expansion sleeve, the problem of chamfering the contact claw of the moving arc contact is solved, and efficient and safe contact claw expansion is achieved, which improves processing efficiency and reduces the risk of damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN XINFENG NEW MATERIALS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-05
AI Technical Summary
The chamfering of the contact claws of the moving arc contact is difficult to operate, time-consuming, labor-intensive, inefficient, and prone to damage.
The device employs a combination structure of a limiting sleeve, an expansion sleeve, and an expansion shaft. The tapered section of the expansion shaft is inserted into the expansion sleeve to increase its outer diameter, thereby pushing the contact claw to swing away from the axis. The swing angle is limited by the limiting sleeve, thus achieving uniform expansion of the contact claw.
It improves the efficiency of chamfering, reduces labor intensity and damage risk, and achieves efficient expansion and protection of the contact claws.
Smart Images
Figure CN224196386U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of arc contact processing technology, and in particular to a chamfering tooling for moving arc contacts. Background Technology
[0002] The moving arc contact has evenly distributed dividing grooves on its side wall, forming contact claws evenly distributed around its axis. When machining the moving arc contact, the sides of the contact claws need to be chamfered. However, due to the narrow width of the dividing grooves, chamfering is difficult. It requires manually pushing each contact claw away from the axis to increase the gap between them, making chamfering easier. This process is time-consuming, labor-intensive, inefficient, and easily damages the contact claws. Utility Model Content
[0003] The purpose of this invention is to provide a chamfering tooling for moving arc contacts, so as to solve the problems of inconvenient, time-consuming, labor-intensive, inefficient, and easily damaged chamfering of the contact claws of moving arc contacts.
[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:
[0005] This utility model provides a chamfering tooling for a moving arc contact, including a limiting sleeve, an expansion sleeve, and an expansion shaft;
[0006] The moving arc contact is inserted into the limiting sleeve, the expansion sleeve is inserted into the moving arc contact, and the expansion shaft is inserted into the expansion sleeve;
[0007] The expansion shaft is provided with a tapered section, which is inserted into the expansion sleeve to increase the outer diameter of the expansion sleeve.
[0008] Furthermore, the expansion sleeve is made of an elastic material.
[0009] Furthermore, the expansion sleeve is made of rubber or polyurethane.
[0010] In some embodiments, the expansion shaft further includes a threaded section connected to the smaller diameter end of the tapered section;
[0011] The threaded section is inserted into the limiting sleeve and threadedly connected to the limiting sleeve.
[0012] Furthermore, the limiting sleeve has a first threaded hole, which engages with the threaded segment.
[0013] In some embodiments, the end face of the tapered segment with the larger diameter is provided with a tool groove for connecting with a tool, through which the expansion shaft is rotated.
[0014] In some embodiments, the limiting sleeve includes a limiting ring and a limiting shaft;
[0015] The limiting ring is fitted onto the limiting shaft and connected to the limiting shaft;
[0016] The limiting shaft is provided with a first external thread, and the moving arc contact is fitted onto the limiting shaft and screwed into the first external thread.
[0017] Furthermore, the limiting ring is provided with an inclined section, the inner wall of which is inclined away from its own axis to limit the swing angle of the contact claw.
[0018] Furthermore, the limiting ring is provided with a first internal thread, and the limiting shaft is provided with a second external thread, wherein the first internal thread and the second external thread are screwed together.
[0019] In some embodiments, the chamfering fixture for the moving arc contact further includes an expansion cylinder, which is inserted into the expansion sleeve, and the expansion shaft is inserted into the expansion cylinder;
[0020] The sidewall of the expansion cylinder has a groove extending along its own axis to form an expansion claw, and the tapered section pushes the expansion claw so that the expansion claw pushes the expansion sleeve.
[0021] Based on the above technical solutions, the technical effects achieved by this utility model are as follows:
[0022] The chamfering fixture for the moving arc contact provided by this utility model includes a limiting sleeve, an expansion sleeve, and an expansion shaft; the moving arc contact is inserted into the limiting sleeve, the expansion sleeve is inserted into the moving arc contact, and the expansion shaft is inserted into the expansion sleeve; a tapered section is provided on the expansion shaft, and the tapered section is inserted into the expansion sleeve to increase the outer diameter of the expansion sleeve.
[0023] The chamfering fixture for moving arc contacts provided by this utility model increases the outer diameter of the expansion sleeve by inserting the tapered section of the expansion shaft into the expansion sleeve. This expansion sleeve then pushes the contact claws of the moving arc contact, causing them to swing away from the axis, thus increasing the distance between the contact claws. Simultaneously, a limiting sleeve restricts the swing of the contact claws, preventing excessive swing angles. By using this chamfering fixture, all contact claws can be pushed in a single operation, improving work efficiency, preventing damage to the contact claws, and reducing labor intensity and difficulty. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 A schematic diagram of the chamfering tooling for the moving arc contact provided in this embodiment of the utility model;
[0026] Figure 2 A schematic diagram illustrating the use of the chamfering tooling for the moving arc contact provided in this embodiment of the utility model;
[0027] Figure 3 This is a schematic diagram of the limiting ring structure;
[0028] Figure 4 This is a schematic diagram of the limiting shaft.
[0029] Figure 5 This is a schematic diagram of the expansion shaft structure;
[0030] Figure 6 This is a schematic diagram of the expansion cylinder.
[0031] Figure 7 This is a schematic diagram of the structure of a moving arc contact.
[0032] Figure 8 This is a schematic diagram of the contact claw swinging.
[0033] Icons: 100, Limiting sleeve; 200, Expansion sleeve; 300, Expansion shaft; 400, Expansion cylinder; 110, Limiting ring; 120, Limiting shaft; 111, Inclined section; 112, First internal thread; 121, First threaded hole; 122, First external thread; 123, Second external thread; 101, Annular groove; 310, Tapered section; 320, Threaded section; 311, Tool groove; 410, Expansion claw; 420, Connecting section; 10, Contact claw. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0035] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0036] When machining the moving arc contact, the sides of the contact claw 10 need to be chamfered. However, due to the narrow width of the dividing groove, the chamfering process is difficult to perform. It requires manual pushing of each contact claw 10 away from the axis to increase the gap between them, thus facilitating the chamfering. Figure 1 , Figure 2 As shown, this process is time-consuming, labor-intensive, inefficient, and can easily damage the contact claw 10.
[0037] In view of this, the present invention provides a chamfering fixture for a moving arc contact, including a limiting sleeve 100, an expansion sleeve 200, and an expansion shaft 300; the moving arc contact is inserted into the limiting sleeve 100, the expansion sleeve 200 is inserted into the moving arc contact, and the expansion shaft 300 is inserted into the expansion sleeve 200; the expansion shaft 300 is provided with a tapered section 310, which is inserted into the expansion sleeve 200 to increase the outer diameter of the expansion sleeve 200.
[0038] The chamfering fixture for moving arc contacts provided by this utility model increases the outer diameter of the expansion sleeve 200 by inserting the tapered section 310 of the expansion shaft 300 into the expansion sleeve 200. This expansion sleeve 200 then pushes the contact claws 10 of the moving arc contact, causing them to swing away from the axis, thus increasing the distance between them. Simultaneously, the limiting sleeve 100 limits the swing of the contact claws 10, preventing excessive swing angles. By using this chamfering fixture, all contact claws 10 can be pushed in a single operation, improving work efficiency, preventing damage to the contact claws 10, and reducing labor intensity and difficulty.
[0039] The following combination Figures 1-8 The structure and shape of the chamfering tooling for the moving arc contact provided in this embodiment are described in detail.
[0040] In this embodiment, the chamfering fixture for the moving arc contact also includes an expansion cylinder 400, which is inserted into the expansion sleeve 200, and an expansion shaft 300 is inserted into the expansion cylinder 400. The sidewall of the expansion cylinder 400 has a groove extending along its own axial direction to form an expansion claw 410. Figure 6 As shown, the tapered segment 310 pushes the expansion claw 410 so that the expansion claw 410 pushes the expansion sleeve 200.
[0041] Specifically, the expansion cylinder 400 also includes a connecting section 420, and multiple expansion claws 410 are evenly distributed circumferentially and connected to the connecting section 420. Along the direction away from the connecting section 420, the expansion claws 410 are inclined away from the axis to better guide the expansion direction. Obviously, the expansion cylinder 400 can also be configured as a single ring, without the inclined design of the expansion claws 410. By using the expansion cylinder 400 to expand the expansion sleeve 200, the deformation direction of the expansion sleeve 200 can be limited, allowing the expansion sleeve 200 to deform better to push the contact claw 10. The expansion sleeve 200 receives uniform force and deforms reliably.
[0042] In this embodiment, the expansion sleeve 200 is made of an elastic material, such as rubber or polyurethane; other parts are made of steel, and the expansion cylinder 400 can be made of spring steel to ensure good deformation and recovery capabilities.
[0043] In this embodiment, the limiting sleeve 100 includes a limiting ring 110 and a limiting shaft 120; the limiting ring 110 is fitted onto the limiting shaft 120 and detachably connected to the limiting shaft 120. Specifically, the limiting ring 110 and the limiting shaft 120 form an annular groove 101, and the moving arc contact is inserted into the annular groove 101, such as... Figure 1 , Figure 2 As shown.
[0044] In this embodiment, the limiting shaft 120 is provided with a first external thread 122, and the moving arc contact is fitted onto the limiting shaft 120 and screwed into the first external thread 122. The limiting ring 110 is provided with a first internal thread 112, and the limiting shaft 120 is provided with a second external thread 123, and the first internal thread 112 and the second external thread 123 are screwed into each other.
[0045] In this embodiment, the limiting ring 110 is provided with an inclined section 111, such as... Figure 3 As shown, the inner wall of the inclined section 111 is inclined away from its own axis to limit the swing angle of the contact claw 10 and prevent the contact claw 10 from swinging outward excessively and causing damage. Specifically, the inclination angle is set to 1.9° to form a gap of sufficient width.
[0046] In this embodiment, the expansion shaft 300 also includes a threaded section 320, which is connected to the smaller diameter end of the tapered section 310; the threaded section 320 is inserted into the limiting sleeve 100 and threadedly connected to the limiting sleeve 100.
[0047] Specifically, the limiting shaft 120 has a first threaded hole 121, which engages with the threaded section 320.
[0048] In an optional embodiment, to facilitate the rotation of the expansion shaft 300, a tool groove 311 is provided on the end face of the larger diameter end of the tapered section 310 for connecting with a tool, allowing the expansion shaft 300 to be rotated via the tool. Specifically, the cross-section of the tool groove 311 is rectangular or regular hexagonal.
[0049] The working process of the chamfering tooling for the moving arc contact provided in this embodiment is as follows:
[0050] After inserting the expansion sleeve 200 into the moving arc contact, insert the limiting shaft 120 into the moving arc contact and screw the first external thread 122 into the internal thread of the moving arc contact.
[0051] The limiting ring 110 is then fitted onto the moving arc contact and the limiting shaft 120, and the first internal thread 112 and the second external thread 123 are screwed together. Then the expansion cylinder 400 is inserted into the expansion sleeve 200, and the expansion shaft 300 is inserted into the expansion cylinder 400, and the threaded section 320 is screwed into the first threaded hole 121.
[0052] By rotating the expansion shaft 300 with a tool, the tapered section 310 is inserted into the expansion cylinder 400 and expansion sleeve 200 along the axial direction to drive expansion. Finally, the contact claw 10 swings towards the inner wall of the inclined section 111 to complete the expansion, which facilitates subsequent chamfering.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A chamfering fixture for a moving arc contact, characterized in that, Includes a limiting sleeve (100), an expansion sleeve (200), and an expansion shaft (300). The moving arc contact is inserted into the limiting sleeve (100), the expansion sleeve (200) is inserted into the moving arc contact, and the expansion shaft (300) is inserted into the expansion sleeve (200). The expansion shaft (300) is provided with a tapered section (310), which is inserted into the expansion sleeve (200) to increase the outer diameter of the expansion sleeve (200).
2. The chamfering fixture for the moving arc contact according to claim 1, characterized in that, The expansion sleeve (200) is made of an elastic material.
3. The chamfering fixture for the moving arc contact according to claim 2, characterized in that, The expansion sleeve (200) is made of rubber or polyurethane.
4. The chamfering fixture for the moving arc contact according to claim 1, characterized in that, The expansion shaft (300) also includes a threaded section (320), which is connected to the smaller diameter end of the tapered section (310); The threaded section (320) is inserted into the limiting sleeve (100) and threadedly connected to the limiting sleeve (100).
5. The chamfering fixture for the moving arc contact according to claim 4, characterized in that, The limiting sleeve (100) has a first threaded hole (121) which engages with the threaded segment (320).
6. The chamfering fixture for the moving arc contact according to claim 1, characterized in that, The end face of the tapered section (310) with the larger diameter is provided with a tool groove (311) for connecting with a tool, through which the expansion shaft (300) is rotated.
7. The chamfering fixture for the moving arc contact according to claim 1, characterized in that, The limiting sleeve (100) includes a limiting ring (110) and a limiting shaft (120); The limiting ring (110) is fitted onto the limiting shaft (120) and connected to the limiting shaft (120); The limiting shaft (120) is provided with a first external thread (122), and the moving arc contact is fitted onto the limiting shaft (120) and screwed into the first external thread (122).
8. The chamfering fixture for the moving arc contact according to claim 7, characterized in that, The limiting ring (110) is provided with an inclined section (111), the inner wall of which is inclined away from its own axis to limit the swing angle of the contact claw (10).
9. The chamfering fixture for the moving arc contact according to claim 8, characterized in that, The limiting ring (110) is provided with a first internal thread (112), and the limiting shaft (120) is provided with a second external thread (123). The first internal thread (112) and the second external thread (123) are screwed together.
10. The chamfering fixture for the moving arc contact according to any one of claims 1-9, characterized in that, It also includes an expansion cylinder (400), which is inserted into the expansion sleeve (200), and the expansion shaft (300) is inserted into the expansion cylinder (400). The sidewall of the expansion cylinder (400) has a groove extending along its own axis to form an expansion claw (410), and the tapered section (310) pushes the expansion claw (410) so that the expansion claw (410) pushes the expansion sleeve (200).