A round runout adjustment tool for a slip ring rotor assembly

Abstract

The utility model relates to the technical field of slip ring assembly process, especially a kind of integral type round runout adjustment tool of slip ring rotor assembly, including the lower tool and upper tool of same structure;The top of lower tool is equipped with multiple arc convex platform;Multiple arc convex platform is coaxial and array distribution along the length direction of lower tool body, and the utility model can realize the assembly efficiency and precision of promotion slip ring rotor assembly.

Description

Technical Field

[0001] This utility model relates to the field of slip ring assembly technology, specifically to an integrated circular runout adjustment fixture for slip ring rotor assemblies. Background Technology

[0002] A slip ring is a mechanical device that transmits electrical power and signals between rotating parts. Also known as a conductive ring, slip ring, current collector ring, or current bus ring, a slip ring typically consists of an outer fixed part and an inner rotating part, which are electrically connected by brushes or contact rings. Figure 1 As shown, a typical conductive slip ring includes a housing, a slip ring body, and a drive shaft. The slip ring body includes a rotor assembly and a stator assembly. The rotor assembly includes a drive shaft 31, multiple spacer rings 32, multiple copper rings 33, a locking ring 34, and other parts. The multiple spacer rings 32 and multiple copper rings 33 are arranged alternately on the drive shaft 31 in an axial manner.

[0003] The current assembly process of slip ring rotor assemblies has the following pain points: after traditional assembly, the coaxiality and circular runout of each copper ring are poorly consistent, making it difficult to meet precision requirements; each copper ring track needs to be individually trimmed, which is repetitive and inefficient; manual adjustment can easily damage the surface of the copper ring, increasing costs and scrap rate. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an integrated circular runout adjustment fixture for slip ring rotor assembly, which can improve the assembly efficiency and accuracy of slip ring rotor assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated circular runout adjustment fixture for a slip ring rotor assembly, comprising a lower fixture and an upper fixture with identical structures; the top of the lower fixture is provided with multiple inferior arc-shaped bosses; the multiple inferior arc-shaped bosses are coaxially distributed in an array along the length direction of the lower fixture body.

[0006] Preferably, the top of the lower tooling is provided with a slightly curved groove and several receiving grooves along its length direction; the receiving grooves are all located on one side of the groove axis; multiple slightly curved bosses are provided in the groove; the bosses are coaxial with the groove and the receiving grooves.

[0007] Preferably, the boss is made of plastic.

[0008] Preferably, the lower tooling is an integral structure.

[0009] Preferably, the central angle corresponding to the boss is not less than the central angle of the groove.

[0010] Preferably, the length of the lower tooling is less than the length of the rotor assembly.

[0011] Preferably, the lower or upper tooling is provided with a pressure application mechanism interface on its outer periphery.

[0012] Preferably, the interface of the pressure application mechanism is a hydraulic cylinder connection flange.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This tooling provides rotational freedom for the relative rotation of the upper and lower tooling by opening inferior arc grooves on the integrated upper and lower tooling. Combined with the surface contact pressure transmission of the arrayed arc-shaped bosses, the upper tooling is driven to reciprocate around the axis of the groove when pressure is applied, forcing the copper ring to fit precisely with the drive shaft. The multi-stage coaxial receiving groove realizes the balanced force constraint of the rotor assembly in all axial directions. A single operation can simultaneously optimize the coaxiality and circular runout consistency of all copper ring tracks, significantly improving assembly efficiency and accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the lower tooling structure of this utility model; Figure 3 This is a schematic diagram of the structure of the tooling used in adjusting the usage state of this utility model.

[0015] In the diagram: 1 lower tooling, 2 upper tooling, 3 rotor assembly, 11 groove, 12 boss, 13 first receiving groove, 14 second receiving groove, 15 third receiving groove, 31 drive shaft, 32 spacer ring, 33 copper ring, 34 locking ring. Detailed Implementation

[0016] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0017] See Figure 1-3 In one embodiment of this utility model, an integrated circular runout adjustment fixture for a slip ring rotor assembly includes: a lower fixture 1 and an upper fixture 2, both having the same structure and being integrated.

[0018] The lower tooling 1 is a block structure, and its top has an arc-shaped groove 11 that matches the size of the spacer ring 31 along its length. The groove 11 has multiple arc-shaped protrusions 12. The size of the arc-shaped protrusions 12 matches the size of the annular channel between the spacer rings 31, ensuring that it can make full circumferential surface contact with the copper ring 33 when pressure is applied. The multiple arc-shaped protrusions 12 are arranged in an array along the length of the lower tooling 1 body, and the axis of the arc-shaped protrusions 12 coincides with the axis of the groove 11. The groove 11 is a minor arc groove. The minor arc groove design allows the upper tooling 2 to have a degree of freedom of rotation around the shaft during the pressing process when the upper tooling 2 cooperates with the lower tooling 1 to press the rotor assembly 3. The operation is that the upper tooling 2 can press the copper ring on the outer periphery of the rotor assembly 3 by reciprocating rotation around the shaft under the drive of external force, so that the copper ring and the transmission shaft 31 are more closely fitted, ensuring the coaxiality and circular runout consistency requirements of each copper ring track in the rotor assembly 3; the length of the lower tooling 1 is less than the length of the rotor assembly 3.

[0019] Furthermore, the central angle corresponding to the arc-shaped boss 12 is not less than the central angle corresponding to the groove 11, so as to ensure that the arc-shaped boss 12 can make full and uniform contact and press on the copper rings 33 between the spacers 32.

[0020] In one embodiment, the lower tooling 1 and the upper tooling 2 are made of non-metallic engineering materials. Engineering plastics are preferred to minimize scratches or indentations on the working surface of the copper ring 33 during extrusion and rotational adjustment. Furthermore, from a cost optimization perspective, engineering plastics can be used only at critical contact points, i.e., the arc-shaped boss 12, while the main body of the lower tooling 1 can be made of lower-cost plastics or metals. This modular material design reduces manufacturing costs while ensuring the core function of protecting the copper ring.

[0021] In one embodiment, the lower tooling 1 is further provided with several arc-shaped and coaxial receiving grooves, which are located on one side of the groove 11 and are also coaxial with the groove 11. The receiving grooves include a first receiving groove 13, a second receiving groove 14, and a third receiving groove 15. The first receiving groove 13, the second receiving groove 14, and the third receiving groove 15 are provided to adapt to rotor assemblies 3 with different outer peripheries. Therefore, the dimensions of the first receiving groove 13, the second receiving groove 14, and the third receiving groove 15 are different. For example, in this embodiment, the first receiving groove 13 is adapted to the size of the part of the rotor assembly 3 near the copper ring in the middle; the second receiving groove 14 is adapted to the size of the locking ring 34; and the third receiving groove 15 is adapted to the size of the first end of the drive shaft 31.

[0022] When the rotor assembly 3 is placed on the lower fixture 1 and the upper fixture 2 is engaged, the groove 11 and the boss 12 achieve radial positioning and axial constraint of the spacer ring 32 and the copper ring 33, while the multi-stage receiving groove precisely constrains the other parts of the rotor assembly 3, such as the position of the drive shaft 31 and the locking ring 34, ensuring that the entire rotor assembly 3 is subjected to balanced force in the axial direction, laying the foundation for precise adjustment.

[0023] In one embodiment, the top of the upper tooling 2 is provided with an interface for a pressure applying mechanism, such as a hydraulic cylinder connecting flange. In implementation, the lower tooling 1 is fixedly set, while the upper tooling 2 is rotatably connected to the hydraulic cylinder to receive driving force. Compared with manual pressure application, the pressure applied by the hydraulic cylinder is more linear and balanced, which can further improve the consistency of rotor assembly assembly. Working principle: The rotor assembly 3 is placed on the lower fixture 1. The axial positioning of the spacer ring 32 and the copper ring 33 is achieved through the groove 11 and the boss 12. The receiving groove ensures the coaxial constraint of the drive shaft 31 and the locking ring 34. After the upper fixture 2 is engaged, pressure is applied to the upper fixture 2 and the upper fixture 2 is driven to rotate back and forth around the axis of the inferior arc groove 11, producing a circumferential "rubbing" effect, forcing the copper ring 33 to fit with the drive shaft 31. The surface contact pressure between the boss 12 and the copper ring 33 is evenly transmitted, and the coaxiality and circular runout of the entire assembly are adjusted in a single operation. In summary, this fixture, by creating slightly curved grooves on the integrated upper and lower fixtures, provides rotational freedom for the relative rotation of the upper and lower fixtures. Combined with the surface contact pressure transmission of the arrayed arc-shaped bosses, the upper fixture is driven to reciprocate around the axis of the groove when pressure is applied, forcing the copper ring to fit precisely with the drive shaft. The multi-stage coaxial receiving grooves achieve balanced force constraint on the rotor assembly along the entire axial direction. A single operation can simultaneously optimize the coaxiality and circular runout consistency of all copper ring tracks, significantly improving assembly efficiency and accuracy.

[0024] 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 this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Images