Rotor assembly upper pressure commutator device

Abstract

The object of the present invention is to provide a rotor assembly pressing commutator device which is easy to process and assemble and can realize the alignment of the commutator and the rotor core on the rotor assembly. A rotor assembly pressing commutator device comprises a base plate, a commutator positioning seat, a rotor assembly positioning seat and a clamping mechanism are provided on the base plate, a pressure block is provided at the output end of the clamping mechanism, the rotor assembly positioning seat is located above the commutator positioning seat and is fixed to the base plate by a bracket, the commutator positioning seat has a placement groove for placing the commutator, the rotor assembly positioning seat has a guide groove running through from top to bottom for placing the rotor assembly, a first positioning piece is provided on the wall of the give way groove, the width of the first positioning piece is the same as the width of the rotor slot of the rotor assembly, the commutator positioning seat is provided with a debugging piece, the width of the upper end of the debugging piece is the same as the width of the rotor slot, and a mutually matching fixed structure is provided between the commutator positioning seat and the base plate.

Description

Technical Field

[0001] The invention relates to a rotor assembly upper pressure commutator device. Background Art

[0002] When the commutator and the rotor assembly are pressed together, the slots formed between two adjacent commutator segments of the commutator need to be aligned with the rotor slots of the rotor core. The invention patent with application number 201721916329.8 discloses a rotor assembly and commutator press-fitting device, which aligns the rotor slots of the rotor core with the slots of the commutator by arranging a commutator positioning piece on the commutator positioning seat and a rotor assembly positioning piece on the rotor assembly positioning seat, but the processing technology and assembly requirements of this device are very high, and the production cost is relatively high.

[0003] Since the commutator is small, the length of the commutator positioning piece is also limited. The width between two adjacent commutator segments of some commutators is 1mm, and even the width between two adjacent commutator segments of some commutators is 0.5mm, which makes the commutator positioning piece very thin. The commutator positioning piece is very easy to deform or wear during the press-fitting process. Even if the commutator and the rotor core are aligned before, deviations will occur due to deformation and wear of the commutator positioning piece.

[0004] A rotor assembly upper commutator device is needed which is easy to process and assemble and can realize the alignment of the commutator and the rotor core on the rotor assembly. Summary of the invention

[0005] The object of the present invention is to provide a rotor assembly upper commutator device which is easy to process and assemble and can realize the alignment of the commutator and the rotor core on the rotor assembly.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a commutator pressing device on a rotor assembly, comprising a base plate, a commutator positioning seat, a rotor assembly positioning seat and a clamping mechanism are arranged on the base plate, a pressing block is arranged at the output end of the clamping mechanism, the rotor assembly positioning seat is located above the commutator positioning seat and is fixed to the base plate through a bracket, the commutator positioning seat has a placement groove for placing the commutator, the rotor assembly positioning seat has a guide groove penetrating up and down to place the rotor assembly, the pressing block moves under the action of the clamping mechanism to press the commutator on the commutator positioning seat, a first positioning piece is arranged on the groove wall of the give way groove, the width of the first positioning piece is the same as the width of the rotor groove of the rotor assembly, the commutator positioning seat is provided with an adjustment piece, the width of the upper end of the adjustment piece is the same as the width of the rotor groove, a mutually matching fixing structure is arranged between the commutator positioning seat and the base plate, the fixing structure comprises at least two arc-shaped adjustment grooves, fixing bolts located in the adjustment grooves, the arcs of the several adjustment grooves are arranged concentrically with the placement grooves, and the adjustment grooves are arranged on the base plate or the commutator positioning seat.

[0007] When assembling the present invention, first fix the rotor assembly positioning seat on the base plate, place the commutator positioning seat on the base plate and place the fixing bolts in the adjustment grooves, then place the rotor assembly in the guide grooves of the rotor assembly positioning seat, and place the first positioning piece in the rotor groove of the rotor core of the rotor assembly, then rotate the commutator to place the adjustment piece in the rotor groove, align or fix the adjustment piece with the commutator positioning seat, and finally lock and fix the fixing bolts, base plate and commutator positioning seat.

[0008] When the present invention is used, it is only necessary to align the commutator with the commutator positioning seat, and then fix the commutator with the commutator positioning seat through the clamping mechanism, and then place and press the rotor assembly. The present invention has low processing technology requirements, is very convenient to assemble, and has low production costs.

[0009] Among them, the alignment of the commutator and the commutator positioning seat can be achieved in a variety of ways; a groove can be made on the commutator positioning seat and a positioning plate can be placed, and the alignment of the commutator and the commutator positioning seat can be achieved through the positioning plate, and then a clamping mechanism is provided to clamp and fix the commutator, and then the rotor assembly is pressed, and the rotor and the positioning plate are taken out after the pressing is completed; the commutator and the commutator positioning seat can even be aligned by visual observation, such as drawing a marking line on the commutator with the same width as the groove on the commutator (the space between two adjacent commutator segments), or a groove can be made on the commutator positioning seat. Among them, the present invention only needs to debug the rotation angle of the commutator positioning seat once, and after the assembly of the commutator positioning seat and the base plate is completed, the commutator positioning seat and the base plate can be welded together by welding.

[0010] Preferably, a fixing block is provided at the lower end of the commutator positioning seat, the fixing block is provided with the adjusting slot penetrating from top to bottom, the bottom plate fixing bolt is fixed to the bottom plate, and the fixing bolt is matched with a fixing nut. When assembling the present invention, the fixing bolt is fixed to the bottom plate, then the commutator positioning seat is placed on the bottom plate and the fixing bolt is located in the adjusting block, and then the commutator positioning seat is rotated to achieve alignment of the commutator positioning seat, the debugging piece and the positioning column of the rotor assembly.

[0011] Preferably, a fixing block is provided at the lower end of the commutator positioning seat, and the fixing block is provided with the adjusting slot that runs through from top to bottom, and a fixing hole that matches with a fixing bolt is provided on the bottom plate, and the lower end of the fixing bolt is fixed in the fixing hole, or the upper end of the fixing bolt passes through the fixing hole and is fixed with a fixing nut. When assembling the present invention, the commutator positioning seat is placed on the bottom plate, and then the fixing bolt is inserted into the adjusting slot and passed through the fixing hole, and the fixing nut is matched at the upper end of the fixing bolt, and then the commutator positioning seat is rotated to achieve alignment of the commutator positioning seat, the adjustment piece and the rotor assembly.

[0012] Preferably, the debugging piece is detachably fixed to the commutator positioning seat. The debugging piece is only used for the assembly of the present invention. After the alignment of the commutator positioning seat and the rotor assembly is completed, the debugging piece can be removed to facilitate the subsequent placement of the commutator, so that the subsequent commutator press-fitting is more convenient.

[0013] Preferably, the commutator positioning seat is provided with a first positioning groove opening upward, and the lower end of the debugging piece has a second positioning groove corresponding to the first positioning groove, or the lower end of the debugging piece has a positioning protrusion extending into the first positioning groove to position and fix the debugging piece to the commutator positioning seat. The debugging piece can be aligned with the commutator positioning seat by naked eye alignment, or the commutator positioning seat can be aligned with the rotor assembly positioning seat by fixing the commutator positioning seat.

[0014] Preferably, the width of the first positioning groove is the same as the width between two adjacent commutator segments of the commutator. The first positioning groove of the commutator positioning seat of the present invention is used not only for aligning the commutator positioning seat with the debugging segment, but also for aligning the commutator positioning seat with the commutator.

[0015] Preferably, the number of the first positioning grooves is at least two. The above arrangement is used to improve the alignment accuracy.

[0016] Preferably, the first positioning groove is matched with a second positioning piece, and the width of the second positioning piece is the same as the width between two adjacent commutator segments of the commutator. The commutator and the commutator positioning seat are aligned by inserting the second positioning piece into the groove of the commutator and the first positioning groove. After alignment, the commutator and the commutator positioning seat are fixed by a clamping mechanism, and then the second positioning piece can be removed.

[0017] Preferably, the commutator positioning seat has a clearance groove for the pressing block and communicates with the placement groove, and the contact surface between the pressing block and the commutator is an arc surface. The above arrangement can improve the clamping effect of the clamping mechanism on the commutator.

[0018] Preferably, the inner edge of the cross section of the guide groove is circular or arc-shaped, and the side of the guide groove is open. The above arrangement facilitates the placement of the rotor assembly into the guide groove.

[0019] The invention has the advantages of being easy to process and assemble, having low cost and being able to achieve alignment of the commutator with the rotor core on the rotor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of the present invention when the commutator positioning seat and the base plate are fixed;

[0021] Figure 2 Another structural schematic diagram of the present invention when the commutator positioning seat and the base plate are fixed;

[0022] Figure 3 A schematic diagram of the structure of the present invention when it is press-fitted;

[0023] Figure 4 Another schematic diagram of the structure of the present invention when it is press-fitted. DETAILED DESCRIPTION

[0024] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0025] The commutator pressing device for the rotor assembly of the present invention can be used together with various presses, and the presses can be hydraulic presses, cylinder presses, electric cylinders, and other existing equipment that can press the rotor shaft and the commutator of the rotor assembly. As is known, a pressure sensor can be set on the press, and the pressure sensor detects that the pressure at the output end of the press reaches a set value and sends a signal to reset the press to avoid over-pressing.

[0026] Depend on Figures 1 to 4 As shown, the rotor assembly pressing commutator device of the present invention comprises a base plate 1, on which a commutator positioning seat 2, a rotor assembly positioning seat 3 and a clamping mechanism 4 are provided, a pressing block 41 is provided at the output end of the clamping mechanism 4, the rotor assembly positioning seat 3 is located above the commutator positioning seat 2 and is fixed to the base plate 1 through a bracket 30, the commutator positioning seat 2 has a placement groove 20 for placing a commutator 5, the rotor assembly positioning seat 3 has a guide groove 60 penetrating from top to bottom for placing a rotor assembly 6, the pressing block 41 moves under the action of the clamping mechanism 4 to press the commutator 5 onto the commutator positioning seat 2, a first positioning piece 31 is provided on the wall of the giving way groove, the width of the first positioning piece 31 is the same as the width of the rotor slot of the rotor assembly 6, the commutator positioning seat 2 is provided with a debugging piece 7, and the width of the upper end of the debugging piece 7 is the same as the width of the rotor slot.

[0027] A mutually cooperating fixing structure is provided between the commutator positioning seat 2 and the bottom plate 1, and the fixing structure includes two arc-shaped adjustment grooves 21 and fixing bolts located in the adjustment grooves 21. The arcs of the adjustment grooves 21 are concentrically arranged with the placement grooves 20, and the adjustment grooves 21 are arranged on the commutator positioning seat 2. A fixing block 22 is provided at the lower end of the commutator positioning seat 2, and the fixing block 22 is provided with the adjustment groove 21 penetrating from top to bottom. A fixing hole 11 cooperating with the fixing bolt is provided on the bottom plate 1, and the lower end of the fixing bolt is threadedly fixed in the fixing hole 11.

[0028] The debugging piece 7 is detachably fixed to the commutator positioning seat 2. The commutator positioning seat 2 is provided with two first positioning grooves 23 opening upward. The lower end of the debugging piece 7 has a positioning protrusion 71 extending into the first positioning groove 23 to position and fix the debugging piece 7 to the commutator positioning seat 2. The width of the first positioning groove 23 is the same as the width between two adjacent commutator segments of the commutator 5. The first positioning groove 23 is provided with a second positioning piece, and the width of the second positioning piece is the same as the width between two adjacent commutator segments of the commutator 5.

[0029] The commutator positioning seat 2 has a clearance groove 24 for the pressing block 41 to make way and communicate with the placement groove 20, and the contact surface between the pressing block 41 and the commutator 5 is an arc surface. The bracket 30 is integrally formed on the lower side of the rotor assembly positioning seat 3, and the bracket 30 has a notch for making way for the pressing block 41. The inner edge of the cross section of the guide groove 60 is arc-shaped, and the guide groove 60 opens to the front side.

[0030] When assembling the present invention, first fix the rotor assembly positioning seat on the base plate, place the commutator positioning seat on the base plate and align the adjustment groove with the fixing hole, then fix the lower end of the fixing bolt in the fixing hole, then place the rotor assembly in the guide groove of the rotor assembly positioning seat, and make the first positioning piece be located in the rotor groove of the rotor core of the rotor assembly, the rotor shaft of the rotor assembly can be held by hand to make the rotor assembly hang above the commutator positioning seat, and then insert the debugging piece into the rotor groove of the rotor core of the rotor assembly, and the commutator positioning seat is rotated so that the positioning protrusion of the debugging piece can be located in the first section positioning groove of the commutator positioning seat after the rotor assembly is lowered, and after the commutator positioning seat, the debugging piece, the rotor assembly, the first positioning piece, and the rotor assembly positioning seat are aligned with each other, the fixing bolt is tightened downward to fix the commutator positioning seat and the base plate, and finally the debugging piece and the rotor assembly are taken out.

[0031] When the present invention is used, the commutator is placed in the placement groove of the commutator positioning seat, and the groove of the commutator is aligned with the first positioning groove, and then the pressing mechanism is started to press the commutator on the commutator positioning seat, and then the rotor assembly is placed in the guide groove of the rotor assembly positioning seat, and the first positioning piece is located in the rotor groove of the rotor core of the rotor assembly, and then the press is started to press the rotor assembly downward to press the commutator onto the rotor shaft of the rotor assembly. Among them, it can be observed by naked eyes whether the commutator groove is aligned with the first positioning groove; it is also possible to insert a second positioning piece in both grooves of the commutator, and then the second positioning piece is located in the first positioning groove to achieve the alignment of the commutator groove with the first positioning groove.

[0032] The invention has low requirements on processing technology, is very convenient to assemble and has low production cost.

Claims

1. A rotor assembly upper pressure commutator device, characterized in that The invention comprises a bottom plate, on which a commutator positioning seat, a rotor assembly positioning seat and a clamping mechanism are arranged, a pressing block is arranged at the output end of the clamping mechanism, the rotor assembly positioning seat is located above the commutator positioning seat and is fixed to the bottom plate through a bracket, the commutator positioning seat has a placement groove for placing the commutator, the rotor assembly positioning seat has a guide groove penetrating from top to bottom for placing the rotor assembly, the pressing block moves under the action of the clamping mechanism to press the commutator on the commutator positioning seat, the commutator positioning seat has a clearance groove for giving way to the pressure block and communicating with the placement groove, a first positioning piece is arranged on the wall of the clearance groove, and the width of the first positioning piece is the same as that of the rotor assembly The rotor slots have the same width, and an adjustment piece is provided on the commutator positioning seat. The width of the upper end of the adjustment piece is the same as the width of the rotor slot. A matching fixing structure is provided between the commutator positioning seat and the base plate. The fixing structure includes at least two arc-shaped adjustment grooves and fixing bolts located in the adjustment grooves. The arcs of several adjustment grooves are concentrically arranged with the placement grooves. The adjustment grooves are arranged on the base plate or the commutator positioning seat; the commutator positioning seat is provided with a first positioning groove opening upward, and the lower end of the adjustment piece has a second positioning groove corresponding to the first positioning groove, or the lower end of the adjustment piece has a positioning protrusion extending into the first positioning groove to position and fix the adjustment piece and the commutator positioning seat.

2. The rotor assembly press commutator device according to claim 1, characterized in that A fixing block is provided at the lower end of the commutator positioning seat, and the fixing block is provided with the adjusting groove penetrating from top to bottom. The bottom plate fixing bolt is fixed to the bottom plate, and the fixing bolt is matched with a fixing nut.

3. The rotor assembly press commutator device according to claim 1, characterized in that A fixing block is provided at the lower end of the commutator positioning seat, and the fixing block is provided with the adjustment groove running through from top to bottom. A fixing hole matching with a fixing bolt is provided on the bottom plate, and the lower end of the fixing bolt is fixed in the fixing hole, or the upper end of the fixing bolt passes through the fixing hole and is fixed with a fixing nut.

4. The rotor assembly press commutator device according to claim 1, characterized in that The debugging piece and the commutator positioning seat are detachably fixed.

5. The rotor assembly press commutator device according to claim 4, characterized in that The width of the first positioning groove is the same as the width between two adjacent commutator segments of the commutator.

6. The rotor assembly press commutator device according to claim 4, characterized in that The number of the first positioning grooves is at least two.

7. The rotor assembly press commutator device according to claim 5, characterized in that The first positioning groove is matched with a second positioning piece, and the width of the second positioning piece is the same as the width between two adjacent commutator segments of the commutator.

8. The rotor assembly press commutator device according to claim 1, characterized in that The contact surface between the pressing block and the commutator is an arc surface.

9. The rotor assembly press commutator device according to claim 1, characterized in that The inner edge of the cross section of the guide groove is circular or arc-shaped; the side of the guide groove is open.

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