Electric drive motor stator positioning and assembling device for preassembling rotor and assembling method

Abstract

The invention discloses an electric drive motor stator positioning and assembling device for preassembling a rotor and an assembling method, and is applied to the technical field of motor stator positioning and assembling devices. The base is movably connected with a floating assembly base based on the horizontal floating compensation assembly, and the floating assembly base is fixedly connected with a plurality of pin positioning assemblies matched with positioning holes of a stator installation flange in the circumferential direction. The floating assembling base is synchronously and movably connected with a plurality of claws used for clamping and fixing a stator to the pin positioning assembly based on the rotary lifting assembly. The invention has the technical effects of simple structure and high assembly precision.

Description

Technical Field

[0001] The present invention relates to the technical field of motor stator positioning and assembly devices, and in particular to an electric drive motor stator positioning and assembly device and an assembly method for pre-installing a rotor. Background Art

[0002] The electric drive motor is composed of a housing, a stator, a rotor, and a UVW Busbar (busbar). The UVW Busbar is fixedly installed on the stator and transmits and distributes electric energy in the electric drive motor system. The UVW Busbar of a traditional electric drive motor is generally split. During assembly, the stator is first fixed to the housing, and then the rotor is installed through the upper opening of the stator. Finally, the UVW Busbar is installed on the stator. However, with the increasing degree of integration of electric drive motors, in order to increase the efficiency of assembly, products that integrate the UVW Busbar and the stator have appeared on the market. At this time, the rotor assembly cannot pass through the upper opening of the stator assembly, so the stator assembly UVW Busbar blocks the rotor assembly. In this case, it can only be assembled by installing the rotor first and then the stator, and the inner and outer diameters of the stator cannot be used as clamping surfaces. Currently, there is a lack of equipment on the market that can automatically complete high-precision assembly of the stator. Summary of the invention

[0003] The first object of the present invention is to provide an electric drive motor stator positioning and assembly device for pre-installing a rotor, which has the advantages of simple structure and high assembly accuracy.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: a stator positioning assembly device for an electric drive motor for pre-installing a rotor, comprising a base; a floating assembly seat is movably connected to the base based on a horizontal floating compensation assembly, and a plurality of pin positioning assemblies that cooperate with the positioning holes of the stator mounting flange are fixedly connected to the floating assembly seat along the circumferential direction; a plurality of hook claws that are synchronously movably connected to the floating assembly seat based on a rotating lifting assembly are used to clamp the stator and fix it on the pin positioning assembly.

[0005] The present invention is further configured as follows: the pin positioning assembly includes a plurality of positioning abutting blocks fixedly connected to the floating assembly seat along the vertical direction for abutting the stator mounting flange, and a passive pin positioning assembly fixedly connected to the floating assembly seat along the vertical direction for cooperating with the first positioning hole of the stator mounting flange; and at least one group of active pin positioning assemblies cooperating with the second positioning holes of the stator mounting flange are also fixedly provided on the floating assembly seat along the vertical direction.

[0006] The present invention is further configured as follows: the passive pin positioning assembly includes a passive pin positioning seat fixedly connected to the floating assembly seat along the vertical direction and a passive positioning pin slidably connected to the passive pin positioning seat along the vertical direction, a stepped sliding hole for the passive positioning pin to slide is provided in the passive pin positioning seat, and a return spring is sleeved and connected to the passive positioning pin.

[0007] The present invention is further configured as follows: the active pin positioning assembly includes an active pin positioning seat fixedly connected to the floating assembly seat along the vertical direction and an active positioning pin slidably connected to the active pin positioning seat along the vertical direction; and a telescopic cylinder is fixedly connected to the floating assembly seat to drive the active positioning pin to extend and retract.

[0008] The present invention is further configured as follows: the rotating lifting assembly includes a rotating seat coaxially rotatably connected to the floating assembly seat and a lifting mounting seat coaxially movably connected to the rotating seat based on a lifting guide assembly; the hook claw is fixedly connected to the lifting mounting seat along the circumferential direction and corresponds to the positioning abutment block, and is used to fix the stator mounting flange to the positioning abutment block; the positioning abutment block is fixedly connected to a cam rotating assembly that drives the rotating seat to rotate so that the hook claw hooks the stator.

[0009] The present invention is further configured as follows: the lifting guide assembly includes a plurality of guide shafts fixedly connected to the rotating seat along the vertical direction and a guide block fixedly connected to the lifting mounting seat and used to cooperate with the guide rod, wherein a guide hole is provided on the guide block, and a lifting cylinder is fixedly connected to the rotating seat along the vertical direction to drive the lifting mounting seat to lift and lower.

[0010] The present invention is further configured as follows: the cam rotating assembly includes a rotating cam fixedly connected to the side of the rotating seat away from the axis and a horizontal driving slide fixedly connected to the positioning abutment block along the horizontal direction, a driving block fixedly connected to the horizontal driving slide, and a driving groove for accommodating the rotating cam is provided on the driving block.

[0011] The present invention is further configured as follows: an airtight detection hole is provided on the surface of the positioning abutment block that abuts against the stator mounting flange, and a laser sensor for detecting the clamping state of the stator is fixedly connected to the positioning abutment block.

[0012] The present invention is further configured as follows: the horizontal floating compensation component includes an X-direction floating table slidably connected to the base based on an X-direction sliding guide rail, the X-direction floating table is slidably connected to a Y-direction floating table based on a Y-direction sliding guide rail, the base is provided with first alignment magnetic blocks at both ends along the X direction for driving the X-direction floating table to be aligned, and the X-direction floating table is fixedly connected with second alignment magnetic blocks at both sides along the Y direction for driving the Y-direction floating table to be aligned.

[0013] A second object of the present invention is to provide a method for positioning and assembling a stator of an electric drive motor for pre-installing a rotor, which has the advantages of simple structure and high assembly accuracy.

[0014] The above technical objectives of the present invention are achieved through the following technical solutions: a method for positioning and assembling a stator of an electric drive motor for pre-installing a rotor, using a device for positioning and assembling a stator of an electric drive motor for pre-installing a rotor as described in any of the above technical solutions; comprising: Step 1: Position the stator based on the pin positioning assembly so that the stator is positioned at the center of the floating assembly seat; Step 2: Clamp the stator onto the pin positioning assembly based on the hook claw; Step 3: transport the stator to the top of the stator cavity and drive the stator down, the horizontal floating compensation assembly drives the floating assembly seat and the stator to perform floating compensation along the horizontal direction so that the stator is coaxially installed in the stator cavity to complete the stator center positioning; Step 4: The pin positioning assembly cooperates with the mounting hole on the housing to achieve angular positioning between the stator and the housing.

[0015] In summary, the present invention has the following beneficial effects: 1. A plurality of pin positioning assemblies are arranged along the circumferential direction on the floating assembly seat, and hook claws are arranged based on the rotating lifting assembly. The pin positioning assembly is provided by arranging a positioning abutment block on the floating assembly seat, and a passive pin positioning assembly and an active pin positioning assembly are provided which respectively cooperate with the first positioning hole and the second positioning hole on the stator mounting flange. When the stator is clamped, the stator is positioned at the center position of the floating assembly seat by the passive pin positioning assembly and the active pin positioning assembly. Then, the rotating lifting assembly drives the lifting mounting seat to descend and then rotate, so that the hook claws hook the bottom surface of the stator, thereby realizing that the stator is pressed and fixed on the positioning abutment block, thereby eliminating the need to use the inner and outer diameters of the stator as clamping The surface is designed to facilitate assembly. When the stator is assembled between the rotor and the housing, since the stator centerline is no longer used for positioning, there is inevitably a problem of displacement during the assembly process. The stator is positioned at the center of the floating assembly seat. When positioning, the floating assembly seat is conveyed to a position concentric with the stator cavity, thereby realizing the transfer of the positioning reference. At the same time, a passive pin positioning component and an active pin positioning component are provided. The passive positioning pin cooperates with the mounting hole on the housing to compensate for the angle between the stator and the housing. Based on the position compensation of the stator and the transfer of the positioning reference, the precise positioning between the stator and the housing is realized, and the automatic stator high-precision assembly is realized. 2. A floating assembly seat is movably connected to the base based on a horizontal floating compensation component. When the positioning is installed in the stator cavity, the chamfer opened on the stator cooperates with the stator cavity to drive the floating assembly seat to float on the base, while ensuring that the positioning can be accurately and concentrically installed in the stator cavity, it also avoids damage to the stator and rotor surfaces during the process of pressing the stator into the stator cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 is a cross-sectional view of the overall structure of this embodiment; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 yes Figure 2 A magnified schematic diagram of part B; Figure 5 yes Figure 2 An enlarged schematic diagram of part C of FIG. Figure 6 is a schematic structural diagram of the cam rotating assembly of this embodiment; Figure 7 It is an overall top view of this embodiment.

[0017] Figure numerals: 1, base; 2, horizontal floating compensation assembly; 21, X-direction sliding guide rail; 22, X-direction floating platform; 23, Y-direction sliding guide rail; 24, Y-direction floating platform; 3, floating assembly seat; 4, pin positioning assembly; 41, positioning abutment block; 42, passive pin positioning assembly; 421, passive pin positioning seat; 422, passive positioning pin; 423, stepped sliding hole; 424, return spring; 43, active pin positioning assembly; 431, active pin positioning assembly Movable pin positioning seat; 432, active positioning pin; 433, telescopic cylinder; 5, rotating lifting assembly; 51, rotating seat; 52, lifting guide assembly; 521, guide shaft; 522, guide block; 523, lifting cylinder; 53, lifting mounting seat; 54, cam rotating assembly; 541, rotating cam; 542, horizontal driving slide; 543, driving block; 544, driving groove; 6, hook claw; 7, airtight detection hole; 8, laser sensor. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] Embodiment 1: refer to Figures 1 to 7 A stator positioning and assembly device for an electric drive motor for pre-installing a rotor comprises a base 1, on which a floating assembly seat 3 is movably connected based on a horizontal floating compensation assembly 2, on which a plurality of pin positioning assemblies 4 cooperating with positioning holes of a stator mounting flange are fixedly connected along a circumferential direction, on the floating assembly seat 3, a plurality of hooks 6 for clamping and fixing the stator on the pin positioning assembly 4 are synchronously and movably connected based on a rotating lifting assembly 5, and when the stator is clamped, the position of the stator is positioned by the pin positioning assembly 4 and then fixed by the hooks 6.

[0020] refer to Figures 2 to 4Specifically, the pin positioning assembly 4 includes a plurality of positioning abutment blocks 41 fixedly connected to the floating assembly seat 3 along the vertical direction for abutting against the stator mounting flange, and a passive pin positioning assembly 42 fixedly connected to the floating assembly seat 3 along the vertical direction for cooperating with the first positioning hole of the stator mounting flange. The floating assembly seat 3 is also fixedly provided with at least one group of active pin positioning assemblies 43 cooperating with the second positioning hole of the stator mounting flange along the vertical direction. The passive pin positioning assembly 42 includes a passive pin positioning seat 421 fixedly connected to the floating assembly seat 3 along the vertical direction and a passive positioning pin 422 slidably connected to the passive pin positioning seat 421 along the vertical direction. A stepped sliding hole 423 for the positioning pin to slide is provided in the passive pin positioning seat 421. A return spring 424 is sleeved and connected to the passive positioning pin 422. When the stator is concentrically installed into the stator cavity, in order to ensure that the stator and the housing are fixedly connected. In order to enable accurate docking, the stator needs to be position compensated. The relative position between the stator and the shell is determined by the cooperation of the passive locating pin 422 and the mounting hole on the shell. The active pin positioning assembly 43 includes an active pin positioning seat 431 fixedly connected to the floating assembly seat 3 in the vertical direction and an active locating pin 432 slidably connected to the active pin positioning seat 431 in the vertical direction. A telescopic cylinder 433 is fixedly connected to the floating assembly seat 3 to drive the active locating pin 432 to extend and retract. When the stator is positioned on the floating assembly seat 3, the telescopic cylinder 433 drives the active locating pin 432 to extend and cooperate with the second locating hole on the stator mounting flange to realize the transfer of the central positioning reference of the stator to the center of the floating assembly seat 3. When the stator is installed in the stator cavity, the telescopic cylinder 433 drives the active locating pin 432 to retract to avoid affecting the position compensation of the passive pin positioning assembly 42.

[0021] refer to Figure 2 and Figure 6Specifically, the rotary lifting assembly 5 includes a rotating seat 51 coaxially rotatably connected to the floating assembly seat 3 and a lifting mounting seat 53 coaxially movably connected to the rotating seat 51 based on the lifting guide assembly 52. ​​The hook 6 is fixedly connected to the lifting mounting seat 53 along the circumferential direction and corresponds to the positioning abutment block 41, and is used to fix the stator mounting flange to the positioning abutment block 41. A cam rotating assembly 54 that drives the rotating seat 51 to rotate so that the hook 6 hooks the stator is fixedly connected to the positioning abutment block 41. The lifting guide assembly 52 includes a plurality of guide shafts 521 fixedly connected to the rotating seat 51 along the vertical direction and a guide block 522 fixedly connected to the lifting mounting seat 53 for cooperating with the guide rod. A guide hole is provided on the guide block 522, and the guide shaft 521 cooperates with the guide block 522 to lift the lift. In order to improve the lifting accuracy and stability of the lowering mounting seat 53, a lifting cylinder 523 is fixedly connected to the rotating seat 51 in the vertical direction to drive the lifting mounting seat 53 to lift and lower. The cam rotating assembly 54 includes a rotating cam 541 fixedly connected to the side of the rotating seat 51 away from the axis and a horizontal driving slide 542 fixedly connected to the positioning abutment block 41 in the horizontal direction. A driving block 543 is fixedly connected to the horizontal driving slide 542. A driving groove 544 for accommodating the rotating cam 541 is provided on the driving block 543. The driving groove 544 is open. When the lifting mounting seat 53 is lowered to the specified position, the horizontal driving slide 542 drives the driving block 543 to slide horizontally. The driving groove 544 pushes the rotating cam 541 to move, thereby driving the rotating seat 51 to rotate. At the same time, the rotating cam 541 slides outward in the driving groove 544. An airtight detection hole 7 is provided on the surface of the positioning abutment block 41 that is in contact with the stator mounting flange. A laser sensor 8 for detecting the stator clamping state is fixedly connected to the positioning abutment block 41. When the positioning abutment block 41 tightly clamps the stator mounting flange, the airtight detection hole 7 is completely blocked. By detecting the airtightness, it is possible to accurately detect whether the hook 6 is clamped stably. In this embodiment, three groups of hooks 6 are provided on the lifting mounting seat 53.

[0022] refer to Figure 1 and Figure 2Specifically, the horizontal floating compensation component 2 includes an X-direction floating table 22 slidably connected to the base 1 based on an X-direction sliding guide rail 21, and a Y-direction floating table 24 is slidably connected to the X-direction floating table 22 based on a Y-direction sliding guide rail 23. A first alignment magnetic block for driving the X-direction floating table 22 to return to the correct position is provided at both ends of the base 1 along the X direction, and a second alignment magnetic block for driving the Y-direction floating table 24 to return to the correct position is fixedly connected to the X-direction floating table 22 on both sides along the Y direction. When the stator is installed in the stator cavity, the X-direction floating table 22 and the Y-direction floating table 24 of the floating assembly seat 3 are driven to float in the X direction and the Y direction respectively on the base 1 based on the chamfers provided on the stator and the stator cavity, so that the stator can be concentrically installed in the stator cavity, thereby avoiding damage to the stator and the rotor during the stator assembly process, and the X-direction floating table 22 and the Y-direction floating table 24 are automatically returned to their original positions through the first alignment magnetic block and the second alignment magnetic block.

[0023] Embodiment 2: A method for positioning and assembling a stator of an electric drive motor for pre-installing a rotor, using a device for positioning and assembling a stator of an electric drive motor for pre-installing a rotor as shown in Example 1, comprising: Step 1: Position the stator based on the pin positioning assembly 4 so that the stator is positioned at the center of the floating assembly seat 3; Step 2: Clamp and fix the stator on the pin positioning assembly 4 based on the hook 6; Step 3: transport the stator to the top of the stator cavity and drive the stator down, the horizontal floating compensation assembly 2 drives the floating assembly seat 3 and the stator to perform floating compensation along the horizontal direction so that the stator is coaxially installed in the stator cavity to complete the stator center positioning; Step 4: The pin positioning assembly 4 cooperates with the mounting hole on the housing to achieve angular positioning between the stator and the housing.

[0024] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A stator positioning and assembly device for an electric drive motor for pre-installing a rotor, comprising a base (1); characterized in that: The base (1) is movably connected with a floating assembly seat (3) based on a horizontal floating compensation assembly (2); the floating assembly seat (3) is fixedly connected with a plurality of pin positioning assemblies (4) respectively along the circumferential direction and matched with positioning holes of a stator mounting flange; the floating assembly seat (3) is synchronously movably connected with a plurality of hook claws (6) for clamping and fixing the stator on the pin positioning assemblies (4) based on a rotating lifting assembly (5).

2. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 1, characterized in that: The pin positioning assembly (4) comprises a plurality of positioning abutment blocks (41) fixedly connected to the floating assembly seat (3) along the vertical direction and used to abut against the stator mounting flange, and a passive pin positioning assembly (42) fixedly connected to the floating assembly seat (3) along the vertical direction and used to cooperate with the first positioning hole of the stator mounting flange. The floating assembly seat (3) is also fixedly provided with at least one group of active pin positioning assemblies (43) that cooperate with the second positioning holes of the stator mounting flange along the vertical direction.

3. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 2, characterized in that: The passive pin positioning assembly (42) comprises a passive pin positioning seat (421) fixedly connected to the floating assembly seat (3) along the vertical direction and a passive positioning pin (422) slidably connected to the passive pin positioning seat (421) along the vertical direction, wherein the passive pin positioning seat (421) is provided with a stepped sliding hole (423) for the passive positioning pin (422) to slide, and a return spring (424) is sleeved and connected to the passive positioning pin (422).

4. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 2, characterized in that: The active pin positioning assembly (43) comprises an active pin positioning seat (431) fixedly connected to the floating assembly seat (3) along the vertical direction and an active positioning pin (432) slidably connected to the active pin positioning seat (431) along the vertical direction, and a telescopic cylinder (433) is fixedly connected to the floating assembly seat (3) for driving the active positioning pin (432) to extend and retract.

5. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 2, characterized in that: The rotating lifting component (5) comprises a rotating seat (51) coaxially rotatably connected to the floating assembly seat (3) and a lifting mounting seat (53) coaxially movably connected to the rotating seat (51) based on a lifting guide component (52); the hook (6) is fixedly connected to the lifting mounting seat (53) along the circumferential direction and corresponds to the positioning abutment block (41) for fixing the stator mounting flange to the positioning abutment block (41); the positioning abutment block (41) is fixedly connected to a cam rotating component (54) for driving the rotating seat (51) to rotate so that the hook (6) hooks the stator.

6. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 5, characterized in that: The lifting guide assembly (52) comprises a plurality of guide shafts (521) fixedly connected to the rotating seat (51) along the vertical direction and a guide block (522) fixedly connected to the lifting mounting seat (53) for cooperating with the guide rod, wherein a guide hole is provided on the guide block (522), and a lifting cylinder (523) is fixedly connected to the rotating seat (51) along the vertical direction for driving the lifting mounting seat (53) to move up and down.

7. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 5, characterized in that: The cam rotating assembly (54) comprises a rotating cam (541) fixedly connected to the side of the rotating seat (51) away from the axis, and a horizontal driving slide (542) fixedly connected to the positioning abutment block (41) along the horizontal direction, and a driving block (543) fixedly connected to the horizontal driving slide (542), and a driving groove (544) for accommodating the rotating cam (541) is provided on the driving block (543).

8. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 2, characterized in that: An airtight detection hole (7) is provided on the surface of the positioning abutment block (41) that abuts against the stator mounting flange, and a laser sensor (8) for detecting the stator clamping state is fixedly connected to the positioning abutment block (41).

9. The electric drive motor stator positioning and assembly device for pre-installing a rotor according to claim 1, characterized in that: The horizontal floating compensation component (2) comprises an X-direction floating table (22) slidably connected to the base (1) based on an X-direction sliding guide rail (21); a Y-direction floating table (24) slidably connected to the X-direction floating table (22) based on a Y-direction sliding guide rail (23); first alignment magnetic blocks for driving the X-direction floating table (22) to be aligned are provided at both ends of the base (1) along the X direction; and second alignment magnetic blocks for driving the Y-direction floating table (24) to be aligned are fixedly connected to both sides of the X-direction floating table (22) along the Y direction.

10. A method for positioning and assembling a stator of an electric drive motor for pre-installing a rotor, using a device for positioning and assembling a stator of an electric drive motor for pre-installing a rotor as described in any one of claims 1 to 9; characterized in that: include: Step 1: positioning the stator based on the pin positioning assembly (4) so ​​that the stator is positioned at the center of the floating assembly seat (3); Step 2: Using the hook (6), the stator is clamped and fixed on the pin positioning assembly (4); Step 3: transport the stator to the top of the stator cavity and drive the stator down, the horizontal floating compensation component (2) drives the floating assembly seat (3) and the stator to perform floating compensation along the horizontal direction so that the stator is coaxially installed in the stator cavity, thereby completing the stator center positioning; Step 4: The pin positioning assembly (4) cooperates with the mounting hole on the housing to achieve angular positioning between the stator and the housing.

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