Commutator tool

Abstract

The utility model discloses commutator frock belongs to motor manufacturing technical field, including sleeve, first fixed block, second fixed block and commutator, first fixed block installs in sleeve, second fixed block sets up in the outside of commutator, second fixed block installs in first fixed block, second fixed block with commutator joint. The utility model discloses through setting up the first fixed block and second fixed block of detachable split type, effectively reduced maintenance cost and operation convenience, realized with partial replacement instead of overall scrapping. At the same time, modular combination makes only need to replace first fixed block, second fixed block can quick adaptation multi -model commutator, improved equipment compatibility and production line flexibility.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to commutator tooling. Background Technology

[0002] In the press-fitting process of the commutator and rotor shaft, a pressure cap is often used to press down on the rotor assembly with the motor shaft until the motor shaft passes through the commutator, thus completing the press-fitting of the commutator and rotor assembly. Currently, the commutator fixing structure of the press-fitting fixture is prone to local damage after long-term exposure to press-fitting friction and rigid impact, which can lead to commutator positioning failure and radial displacement. However, since the fixing structure is usually an integral structure, such local damage requires replacement of the entire fixing structure, resulting in a complex replacement process and high maintenance costs. Utility Model Content

[0003] This utility model aims to overcome the problems of complex process and high cost in the replacement of the integral fixed structure of the commutator in the prior art, and provides a commutator tooling.

[0004] To achieve the above objectives, the present invention provides a commutator fixture, comprising a sleeve, a first fixing block, a second fixing block, and a commutator. The first fixing block is installed inside the sleeve, the second fixing block is sleeved outside the commutator, the second fixing block is installed inside the first fixing block, and the second fixing block is engaged with the commutator.

[0005] In one embodiment, the first fixing block has a limiting groove and a first receiving groove, the limiting groove being disposed outside the first receiving groove; the second fixing block is installed in the limiting groove, and the commutator is installed in the first receiving groove.

[0006] In one embodiment, the second fixing block and the first fixing block are detachably installed.

[0007] In one embodiment, a second receiving groove is provided on the first fixing block, the first receiving groove is provided on the outer periphery of the second receiving groove, and the depth of the first receiving groove is less than the depth of the second receiving groove.

[0008] In one embodiment, the second fixing block is provided with a second limiting member, which engages with the hook portion of the commutator.

[0009] In one embodiment, at least two second limiting members are provided on the second fixing block, and the hook portion is engaged between the second limiting members.

[0010] In one embodiment, a limiting hole is provided on the sleeve, and a limiting member is provided on the first fixing block, the limiting member being installed in the limiting hole.

[0011] In one embodiment, the top of the sleeve has a mounting hole, and a guide post is provided axially inside the mounting hole.

[0012] In one embodiment, the sleeve has a notch on its front side, which communicates with the mounting hole; the notch forms a cross-section at the lower part of the sleeve, and an axial mounting groove is formed on the cross-section, which communicates with the mounting hole and the notch.

[0013] In one embodiment, the commutator fixture further includes a pressure cap connected to the motor shaft of the rotor assembly to increase the downward pressure power.

[0014] In summary, this utility model provides a commutator fixture. By setting up separate, detachable first and second fixing blocks, it effectively reduces maintenance costs and improves operational convenience, achieving partial replacement instead of complete scrapping. Simultaneously, the modular design allows for quick adaptation to multiple commutator models by simply replacing the first and second fixing blocks, improving equipment compatibility and production line flexibility.

[0015] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the commutator fixture in this utility model.

[0017] Figure 2 for Figure 1 Exploded view.

[0018] Figure 3 This is an assembly diagram of the commutator tooling in this utility model.

[0019] Figure 4 for Figure 3 A sectional view.

[0020] Figure label: Commutator fixture-1; Sleeve-11; Mounting hole - 111; Guide post - 112; Notch - 113; Limiting hole - 114; Mounting groove - 115; Second fixing hole - 116; Cut surface - 117; Fastener - 118; First fixed block -12; First limiting component - 121; First fixing hole - 122; Limiting groove - 123; First receiving groove - 124; Second receiving groove - 125; Commutator-13; Hook section - 131; Through hole - 132; Second fixing block -14; Second limiting component-141; Cap -15; Rotor assembly-2; Motor shaft-21. Detailed Implementation

[0021] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] To address the issues of complex processes and high costs associated with replacing existing integral fixed commutator structures, this utility model provides a commutator tooling. For example... Figure 1 As shown, the commutator fixture 1 includes a sleeve 11, a first fixing block 12 and a commutator 13. The first fixing block 12 is installed inside the sleeve 11 and sleeved outside the commutator 13.

[0023] Combination Figure 2 and Figure 3 As can be seen, the sleeve 11 is cylindrical, and a mounting hole 111 is provided at the top of the sleeve 11. The mounting hole 111 provides space for pressing the rotor assembly 2 to be processed into the sleeve 11. The size of the mounting hole 111 matches the size of the rotor assembly 2. A guide post 112 is provided in the mounting hole 111. The guide post 112 is arranged axially and guides the rotor assembly 2 to keep it vertically pressed down so that the end of the rotor assembly 2 can accurately pass into the commutator 13. The front of the sleeve 11 has a notch 113 to make way for assembly operations and parts replacement operations. The notch 113 communicates with the mounting hole 111. Preferably, the upper part of the notch 113 is inclined to provide a larger visual operation window. The notch 113 forms a cross-section 117 at the lower part of the sleeve 11. A limiting hole 114 and a mounting groove 115 are axially formed on the cross-section 117. The limiting hole 114 is located on both sides of the mounting groove 115. The mounting groove 115 communicates with the mounting hole 111 and the notch 113, and the limiting hole 114 communicates with the mounting groove 115. The mounting groove 115 is used to mount the first fixing block 12, while the limiting hole 114 is used to restrict the movement of the first fixing block 12.

[0024] Accordingly, the first fixing block 12 is provided with a first limiting member 121, which is fitted into the limiting hole 114 and has a matching shape. Together, they achieve circumferential limiting of the first fixing block 12. Simultaneously, a first fixing hole 122 is formed on the outer wall of the first fixing block 12, and a second fixing hole 116 is formed at the corresponding location on the wall of the sleeve 11. When aligned, the first fixing hole 122 and the second fixing hole 116 are used to install the fixing member 118 to further lock the first fixing block 12. The fixing member 118 can be, but is not limited to, a screw.

[0025] Combination Figure 2 and Figure 4 It can be seen that the first fixing block 12 has a limiting groove 123, a first receiving groove 124, and a second receiving groove 125. The second receiving groove 125 is centrally located on the first fixing block 12, and the first receiving groove 124 is located on the outer periphery of the second receiving groove 125. The limiting groove 123 is located on the outer side of the first receiving groove 124, and the first receiving groove 124, the second receiving groove 125, and the limiting groove 123 are connected. Preferably, a limiting groove 123 is provided on each side of the first receiving groove 124. The depth h2 of the first receiving groove 124 (i.e., the distance between the upper surface of the first fixing block 12 and the bottom of the first receiving groove 124) is less than the depth h3 of the second receiving groove 125 (i.e., the distance between the upper surface of the first fixing block 12 and the bottom of the second receiving groove 125), providing space for the motor shaft 21 to pass through the commutator 13; the depth h1 of the limiting groove 123 (i.e., the distance between the upper surface of the first fixing block 12 and the bottom of the limiting groove 123) is less than the depth h2 of the first receiving groove 124. The first receiving groove 124 is used to install the commutator 13, the second receiving groove 125 is used to accommodate the motor shaft 21 in the rotor assembly 2, and the limiting groove 123 is used to install the second fixing block 14.

[0026] The commutator 13 includes several hook portions 131 and through holes 132. The hook portions 131 are disposed on the outer side of the commutator 13, and the through holes 132 penetrate the commutator 13 at their centers. The number of hook portions 131 is related to the number of rotor core slots and poles of the rotor assembly 2. The through holes 132 facilitate the passage of the motor shaft 21 of the rotor assembly 2 and its pressing into the second receiving groove 125. The through holes 132 and the motor shaft 21 of the rotor assembly 2 are in an interference fit.

[0027] The commutator fixture 1 further includes a second fixing block 14, which is installed inside the first fixing block 12, i.e., the second fixing block 14 is installed in the limiting groove 123, and the second fixing block 14 is engaged with the commutator 13. The second fixing block 14 is provided with a second limiting member 141. Specifically, the second limiting member 141 is located on the side of the second fixing block 14 near the commutator 13, and the second limiting member 141 engages with the hook portion 131 of the commutator 13 to restrict the circumferential rotation of the commutator 13 and ensure the coaxiality of the commutator 13 with the rotor assembly 2. Preferably, at least two second limiting members 141 are provided on any one of the second fixing blocks 14, and the hook portion 131 is engaged between the second limiting members 141. It is worth noting that the circumferential position of the second limiting member 141 is related to the winding lead direction of the rotor assembly 2, and the position of the second limiting member 141 can be adjusted according to the actual situation. The second fixing block 14 and the first fixing block 12 are detachable and can be connected by means including but not limited to bolts.

[0028] The commutator fixture 1 also includes a pressure cover 15, which is connected to the motor shaft 21 of the rotor assembly 2. The pressure cover 15 provides downward pressure to the motor shaft 21. The pressure cover 15 can be connected to a hydraulic device (not shown in the figure) or other power source.

[0029] In the press-fitting process, select appropriate first fixing block 12 and second fixing block 14, and install the first fixing block 12 in the mounting groove 115 and the second fixing block 14 in the limiting groove 123 in sequence. After adjusting the angle of the commutator 13, insert the hook portion 131 between adjacent second limiting members 141, and install the commutator 13 into the first receiving groove 124. Place the rotor assembly 2 into the sleeve 11 through the mounting hole 111. At this time, the end of the motor shaft 21 of the rotor assembly 2 is aligned with the through hole 132 of the commutator 13. Start the hydraulic equipment, and the pressure cap 15 will drive the rotor assembly 2 to press down under the guidance of the guide post 112 until the end of the motor shaft 21 of the rotor assembly 2 abuts against the bottom wall of the second receiving groove 125.

[0030] In summary, this utility model provides a commutator fixture. By setting up separate, detachable first fixing block 12 and second fixing block 14, this utility model effectively reduces maintenance costs and improves operational convenience, achieving partial replacement instead of complete scrapping. Simultaneously, the modular combination allows for quick adaptation to multiple commutator models by simply replacing the first fixing block 12 and the second fixing block 14, improving equipment compatibility and production line flexibility.

[0031] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A commutator fixture, characterized in that, It includes a sleeve, a first fixing block, a second fixing block, and a commutator. The first fixing block is installed inside the sleeve, the second fixing block is sleeved outside the commutator, the second fixing block is installed inside the first fixing block, and the second fixing block is engaged with the commutator.

2. The commutator fixture as described in claim 1, characterized in that, The first fixing block has a limiting groove and a first receiving groove, the limiting groove being located outside the first receiving groove; the second fixing block is installed in the limiting groove, and the commutator is installed in the first receiving groove.

3. The commutator fixture as described in claim 1, characterized in that, The second fixing block and the first fixing block are detachable.

4. The commutator fixture as described in claim 2, characterized in that, The first fixing block has a second receiving groove, which is located on the outer periphery of the second receiving groove, and the depth of the first receiving groove is less than the depth of the second receiving groove.

5. The commutator fixture as described in claim 1, characterized in that, The second fixing block is provided with a second limiting member, which engages with the hook portion of the commutator.

6. The commutator fixture as described in claim 5, characterized in that, At least two second limiting members are provided on the second fixing block, and the hook portion is engaged between the second limiting members.

7. The commutator fixture as described in claim 5, characterized in that, The sleeve has a limiting hole, and the first fixing block is provided with a limiting member, which is installed in the limiting hole.

8. The commutator fixture as described in claim 1, characterized in that, The top of the sleeve has a mounting hole, and a guide post is provided in the mounting hole along the axial direction.

9. The commutator fixture as described in claim 8, characterized in that, The sleeve has a notch on its front side, which communicates with the mounting hole; the notch forms a cross-section at the lower part of the sleeve, and an axial mounting groove is formed on the cross-section, which communicates with the mounting hole and the notch.

10. The commutator fixture as described in claim 1, characterized in that, The commutator fixture also includes a pressure cap, which is connected to the motor shaft of the rotor assembly to increase the downward pressure power.

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