An electric drive motor stator positioning and assembling device and method for preassembled rotor

Abstract

The application discloses a kind of electric drive motor stator positioning assembly device and assembly method for prepackaged rotor, applied in motor stator positioning assembly device technical field, its technical solution main points are: including base;The base is movably connected with floating assembly seat based on horizontal floating compensation component, the floating assembly seat is movably connected with several pin positioning components matched with the positioning hole of stator mounting flange along the circumferential direction, and the floating assembly seat is movably connected with several hooks for clamping and fixing stator on pin positioning component based on rotary lifting component;With the technical effect is: simple structure, high assembly precision.

Description

Technical Field

[0001] This invention relates to the field of motor stator positioning and assembly equipment, and particularly to an electric drive motor stator positioning and assembly equipment and method for pre-assembling rotors. Background Technology

[0002] An electric drive motor consists of components such as a housing, stator, rotor, and UVW Busbar. The UVW Busbar is fixedly mounted on the stator and performs the function of transmitting and distributing electrical energy in the electric drive motor system. Traditionally, the UVW Busbar of an electric drive motor is usually a separate unit. During assembly, the stator is first fixed to the housing, then the rotor is inserted through the upper port of the stator, and finally the UVW Busbar is installed on the stator. However, with the increasing integration of electric drive motors, in order to increase assembly efficiency, products with integrated UVW Busbar and stator have appeared on the market. In this case, the rotor assembly cannot pass through the upper port of the stator assembly, resulting in the UVW Busbar blocking the rotor assembly. In this situation, the only way to assemble is to install the rotor first and then the stator. However, neither the inner nor outer diameter of the stator can be used as a clamping surface. Currently, there is a lack of equipment on the market that can automatically complete the high-precision assembly of the stator. Summary of the Invention

[0003] The first objective of this invention is to provide a stator positioning and assembly device for electric drive motors with pre-assembled rotors, which has the advantages of simple structure and high assembly accuracy.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a stator positioning assembly device for a pre-assembled rotor electric drive motor, comprising a base; a floating assembly seat is movably connected to the base based on a horizontal floating compensation component; a plurality of pin positioning components that mate with the positioning holes of the stator mounting flange are fixedly connected to the floating assembly seat along the circumferential direction; and a plurality of hooks for clamping and fixing the stator to the pin positioning components are synchronously movably connected to the floating assembly seat based on a rotary lifting component.

[0005] The present invention is further configured such that: the pin positioning assembly includes a plurality of positioning abutment blocks fixedly connected to the floating assembly base in the vertical direction for abutting against the stator mounting flange, and a passive pin positioning assembly fixedly connected to the floating assembly base in the vertical direction for cooperating with the first positioning hole of the stator mounting flange; the floating assembly base is also fixedly provided with at least one set of active pin positioning assemblies cooperating with the second positioning hole of the stator mounting flange in the vertical direction.

[0006] The present invention is further configured such that: the passive pin positioning assembly includes a passive pin positioning seat fixedly connected to the floating assembly base in the vertical direction and a passive positioning pin slidably connected to the passive pin positioning seat in the vertical direction; the passive pin positioning seat has a stepped sliding hole for the passive positioning pin to slide; and a return spring is sleeved on the passive positioning pin.

[0007] The present invention is further configured such that: the active pin positioning component includes an active pin positioning seat fixedly connected to the floating assembly seat in the vertical direction and an active positioning pin slidably connected to the active pin positioning seat in the vertical direction; and a telescopic cylinder for driving the active positioning pin to extend and retract is fixedly connected to the floating assembly seat.

[0008] The present invention is further configured such that: the rotary lifting assembly includes a rotary seat coaxially rotatably connected to the floating assembly seat and a lifting mounting seat coaxially movably connected to the rotary seat based on the lifting guide assembly; the hook is fixedly connected to the lifting mounting seat along the circumferential direction and corresponds to and cooperates with the positioning abutment block, for fixing the stator mounting flange to the positioning abutment block; and a cam rotary assembly is fixedly connected to the positioning abutment block to drive the rotary seat to rotate so that the hook hooks the stator.

[0009] The present invention is further configured such that: the lifting guide assembly includes a plurality of guide shafts fixedly connected to the rotating seat in the vertical direction and a guide block fixedly connected to the lifting mounting seat for cooperating with the guide rod; the guide block has a guide hole; and a lifting cylinder is fixedly connected to the rotating seat in the vertical direction to drive the lifting mounting seat to lift.

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

[0011] The present invention is further configured such that: an airtightness detection hole is opened on the surface of the positioning abutment block that fits the stator mounting flange, and a laser sensor for detecting the stator clamping state is fixedly connected to the positioning abutment block.

[0012] The present invention is further configured such that: the horizontal floating compensation component includes an X-axis floating platform slidably connected to the base based on an X-axis sliding guide rail; a Y-axis floating platform is slidably connected to the X-axis floating platform based on a Y-axis sliding guide rail; the base is provided with first correcting magnetic blocks at both ends along the X-direction for driving the X-axis floating platform to correct itself; and second correcting magnetic blocks are fixedly connected to both sides of the X-axis floating platform along the Y-direction for driving the Y-axis floating platform to correct itself.

[0013] The second objective of this invention is to provide a method for assembling a stator of an electric drive motor with a pre-assembled rotor, which has the advantages of simple structure and high assembly accuracy.

[0014] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for positioning and assembling a stator of an electric drive motor for pre-assembling a rotor, employing a stator positioning and assembly device for pre-assembling a rotor of an electric drive motor as described in any of the above technical solutions; comprising: Step 1: Position the stator based on the pin positioning component so that the stator is positioned at the center of the floating assembly base; Step 2: Clamp and fix the stator onto the pin positioning assembly using the hooks and claws; Step 3: The stator is transported to the top of the stator cavity and driven to descend. The horizontal floating compensation component drives the floating assembly seat and the stator to float and compensate in the horizontal direction so that the stator is coaxially installed into the stator cavity, thereby completing the stator center positioning. Step 4: The pin positioning component is used to mate with the mounting holes 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. Several pin positioning components are arranged circumferentially on the floating assembly base, and hooks are set based on the rotary lifting component. The pin positioning components are provided by positioning abutment blocks on the floating assembly base, and passive pin positioning components and active pin positioning components are respectively provided to mate with the first positioning hole and the second positioning hole on the stator mounting flange. When the stator is clamped, the passive pin positioning components and active pin positioning components are used to position the stator at the center position of the floating assembly base. Then, the rotary lifting component drives the lifting mounting base to descend and rotate, so that the hooks hook onto the bottom surface of the stator, thereby pressing and fixing the stator on the positioning abutment block, thus eliminating the need to use the inner and outer diameters of the stator as clamping points. To facilitate assembly, when assembling the stator between the rotor and the housing, since the stator centerline is no longer used for positioning, misalignment is inevitable during assembly. By positioning the stator at the center of the floating assembly seat, and then transporting the floating assembly seat to a position concentric with the stator cavity during positioning, the positioning reference is transferred. At the same time, passive pin positioning components and active pin positioning components are set up. The passive positioning pin cooperates with the mounting holes 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 achieved, realizing automatic high-precision stator assembly. 2. The floating assembly seat is movably connected to the base based on the horizontal floating compensation component. When the positioning is installed in the stator cavity, the chamfer on the stator cooperates with the stator cavity to drive the floating assembly seat to float on the base. This ensures that the positioning is accurately and concentrically installed in the stator cavity while avoiding damage to the surface of the stator and rotor during the process of pressing the stator into the stator cavity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a cross-sectional view of the overall structure of this embodiment; Figure 3 yes Figure 2 Enlarged schematic diagram of part A; Figure 4 yes Figure 2 Enlarged diagram of part B; Figure 5 yes Figure 2 Enlarged schematic diagram of part C; Figure 6 This is a schematic diagram of the cam rotation assembly in this embodiment; Figure 7 This is a top view of the entire embodiment.

[0017] Reference numerals: 1. Base; 2. Horizontal floating compensation assembly; 21. X-axis sliding guide rail; 22. X-axis floating stage; 23. Y-axis sliding guide rail; 24. Y-axis floating stage; 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. Main... 432. Active positioning pin; 433. Telescopic cylinder; 5. Rotary lifting assembly; 51. Rotary seat; 52. Lifting guide assembly; 521. Guide shaft; 522. Guide block; 523. Lifting cylinder; 53. Lifting mounting seat; 54. Cam rotation assembly; 541. Rotary cam; 542. Horizontal drive slide; 543. Drive block; 544. Drive groove; 6. Claw; 7. Air tightness detection hole; 8. Laser sensor. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example 1: refer to Figures 1 to 7 A stator positioning and assembly device for a pre-assembled rotor of an electric drive motor includes a base 1. A floating assembly seat 3 is movably connected to the base 1 based on a horizontal floating compensation component 2. Several pin positioning components 4, which mate with the positioning holes of the stator mounting flange, are fixedly connected to the floating assembly seat 3 along the circumferential direction. Several hooks 6 for clamping and fixing the stator to the pin positioning components 4 are synchronously movably connected to the floating assembly seat 3 based on a rotary lifting component 5. When clamping the stator, the position of the stator is positioned by the pin positioning components 4 and then fixed by the hooks 6.

[0020] refer to Figures 2 to 4Specifically, the pin positioning assembly 4 includes several positioning abutment blocks 41 fixedly connected vertically to the floating assembly base 3 for abutting the stator mounting flange, and passive pin positioning assemblies 42 fixedly connected vertically to the floating assembly base 3 for engaging with the first positioning hole of the stator mounting flange. At least one set of active pin positioning assemblies 43, engaging with the second positioning hole of the stator mounting flange, is also fixedly provided on the floating assembly base 3 vertically. The passive pin positioning assembly 42 includes a passive pin positioning seat 421 fixedly connected vertically to the floating assembly base 3 and a passive positioning pin 422 slidably connected vertically within the passive pin positioning seat 421. A stepped sliding hole 423 is provided in the passive pin positioning seat 421 for the positioning pin to slide. 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 the stator and the outer shell... To ensure accurate docking, stator position compensation is required. The relative position between the stator and the housing is determined by the passive positioning pin 422 engaging with the mounting hole on the housing. The active pin positioning assembly 43 includes an active pin positioning seat 431 fixedly connected to the floating assembly base 3 in the vertical direction and an active positioning 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 base 3 to drive the active positioning pin 432 to extend and retract. When the positioning pin is positioned on the floating assembly base 3, the telescopic cylinder 433 drives the active positioning pin 432 to extend and engage with the second positioning hole on the stator mounting flange, thereby transferring the center positioning reference of the stator to the center of the floating assembly base 3. When the positioning pin is installed into the stator cavity, the telescopic cylinder 433 drives the active positioning 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 rotary seat 51 coaxially rotatably connected to the floating assembly base 3 and a lifting mounting base 53 coaxially movably connected to the rotary seat 51 based on the lifting guide assembly 52. ​​A hook 6 is fixedly connected to the lifting mounting base 53 along the circumferential direction and corresponds to and cooperates with the positioning abutment block 41, used to fix the stator mounting flange to the positioning abutment block 41. A cam rotary assembly 54 is fixedly connected to the positioning abutment block 41 to drive the rotary seat 51 to rotate so that the hook 6 hooks the stator. The lifting guide assembly 52 includes several guide shafts 521 fixedly connected to the rotary seat 51 along the vertical direction and guide blocks 522 fixedly connected to the lifting mounting base 53 for cooperating with guide rods. Guide holes are provided on the guide blocks 522, and the cooperation between the guide shafts 521 and the guide blocks 522 is used to lift the stator. The lifting accuracy and stability of the lowering mounting base 53 are ensured by a lifting cylinder 523 fixedly connected to the rotating base 51 in the vertical direction, which drives the lifting mounting base 53 to rise and fall. The cam rotation assembly 54 includes a rotating cam 541 fixedly connected to the side of the rotating base 51 away from the axis and a horizontal drive slide 542 fixedly connected to the positioning abutment block 41 in the horizontal direction. A drive block 543 is fixedly connected to the horizontal drive slide 542. The drive block 543 has a drive groove 544 for accommodating the rotating cam 541. The drive groove 544 is open. When the lifting mounting base 53 descends to the designated position, the horizontal drive slide 542 drives the drive block 543 to slide horizontally. The drive groove 544 pushes the rotating cam 541 to move, thereby driving the rotating base 51 to rotate. At the same time, the rotating cam 541 slides outward in the drive groove 544. An airtightness detection hole 7 is provided on the surface of the positioning abutment block 41 that fits against the stator mounting flange. A laser sensor 8 for detecting the stator clamping status is fixedly connected to the positioning abutment block 41. When the positioning abutment block 41 tightly clamps the stator mounting flange, the airtightness detection hole 7 is completely blocked. By detecting the airtightness, the stability of the hook 6 can be accurately detected. In this embodiment, the lifting mounting base 53 is provided with 3 sets of hooks 6.

[0022] refer to Figure 1 and Figure 2Specifically, the horizontal floating compensation component 2 includes an X-axis floating platform 22 slidably connected to the base 1 based on an X-axis sliding guide rail 21, and a Y-axis floating platform 24 slidably connected to the X-axis floating platform 22 based on a Y-axis sliding guide rail 23. At both ends of the base 1 along the X-direction, there are first aligning magnetic blocks for driving the X-axis floating platform 22 to align. On both sides of the X-axis floating platform 22 along the Y-direction, there are second aligning magnetic blocks for driving the Y-axis floating platform 24 to align. When the stator is installed into the stator cavity, the chamfer on the stator cooperates with the stator cavity to drive the X-axis floating platform 22 and the Y-axis floating platform 24 of the floating assembly 3 to float in the X and Y directions respectively on the base 1, ultimately allowing the stator to be concentrically installed into the stator cavity, avoiding damage to the stator and rotor during stator assembly. The first and second aligning magnetic blocks then enable the X-axis floating platform 22 and the Y-axis floating platform 24 to automatically return to their original positions.

[0023] Example 2: A method for positioning and assembling a stator of an electric drive motor for pre-assembling a rotor, using a stator positioning and assembly device for pre-assembling a rotor of an electric drive motor as shown in Example 1, includes: Step 1: Position the stator based on the pin positioning component 4, so that the stator is positioned at the center of the floating assembly 3; Step 2: Clamp and fix the stator onto the pin positioning assembly 4 based on the hook 6; Step 3: The stator is transported to the top of the stator cavity and driven to descend. The horizontal floating compensation component 2 drives the floating assembly seat 3 and the stator to float and compensate in the horizontal direction so that the stator is coaxially installed into the stator cavity, thereby completing the stator center positioning. Step 4: Based on the engagement of the pin positioning component 4 with the mounting holes on the housing, the angular positioning between the stator and the housing is achieved.

[0024] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make inventive modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A stator positioning and assembly device for a pre-assembled rotor of an electric drive motor, comprising a base (1); characterized in that, The base (1) is movably connected to a floating assembly seat (3) based on a horizontal floating compensation component (2). The floating assembly seat (3) is fixedly connected along the circumferential direction to a plurality of pin positioning components (4) that mate with the positioning holes of the stator mounting flange. The floating assembly seat (3) is synchronously movably connected to a plurality of hooks (6) for clamping and fixing the stator to the pin positioning components (4) based on a rotary lifting component (5). The pin positioning assembly (4) includes several positioning abutment blocks (41) fixedly connected to the floating assembly base (3) in the vertical direction for abutting the stator mounting flange, and a passive pin positioning assembly (42) fixedly connected to the floating assembly base (3) in the vertical direction for cooperating with the first positioning hole of the stator mounting flange. At least one set of active pin positioning assemblies (43) cooperating with the second positioning hole of the stator mounting flange are also fixedly provided on the floating assembly base (3) in the vertical direction.

2. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 1, characterized in that, The passive pin positioning assembly (42) includes a passive pin positioning seat (421) fixedly connected to the floating assembly base (3) in the vertical direction and a passive positioning pin (422) slidably connected to the passive pin positioning seat (421) in the vertical direction. The passive pin positioning seat (421) is provided with a stepped sliding hole (423) for the passive positioning pin (422) to slide. A return spring (424) is sleeved on the passive positioning pin (422).

3. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 1, characterized in that, 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 positioning pin (432) slidably connected to the active pin positioning seat (431) in the vertical direction. A telescopic cylinder (433) that drives the active positioning pin (432) to extend and retract is fixedly connected to the floating assembly seat (3).

4. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 1, characterized in that, The rotary lifting assembly (5) includes a rotary seat (51) rotatably connected to the floating assembly seat (3) on the same axis, and a lifting mounting seat (53) movably connected to the rotary seat (51) on the same axis 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) for fixing the stator mounting flange to the positioning abutment block (41). A cam rotary assembly (54) is fixedly connected to the positioning abutment block (41) to drive the rotary seat (51) to rotate so that the hook (6) hooks the stator.

5. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 4, characterized in that, The lifting guide assembly (52) includes several guide shafts (521) fixedly connected to the rotating seat (51) in the vertical direction and guide blocks (522) fixedly connected to the lifting mounting seat (53) for cooperating with the guide shafts (521). The guide blocks (522) are provided with guide holes. The rotating seat (51) is fixedly connected to a lifting cylinder (523) in the vertical direction to drive the lifting mounting seat (53) to lift.

6. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 4, characterized in that, The cam rotation assembly (54) includes a rotating cam (541) fixedly connected to the side of the rotating seat (51) away from the axis and a horizontal drive slide (542) fixedly connected to the positioning abutment block (41) in the horizontal direction. A drive block (543) is fixedly connected to the horizontal drive slide (542), and a drive groove (544) is provided on the drive block (543) for accommodating the rotating cam (541).

7. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 1, characterized in that, The positioning abutment block (41) has an airtightness detection hole (7) on its surface that fits against the stator mounting flange. A laser sensor (8) for detecting the stator clamping state is fixedly connected to the positioning abutment block (41).

8. The stator positioning and assembly device for a pre-assembled rotor of an electric drive motor according to claim 1, characterized in that, The horizontal floating compensation component (2) includes an X-direction floating platform (22) slidably connected to the base (1) based on an X-direction sliding guide rail (21), and a Y-direction floating platform (24) slidably connected to the X-direction floating platform (22) based on a Y-direction sliding guide rail (23). The base (1) is provided with first correction magnetic blocks at both ends along the X direction for driving the X-direction floating platform (22) to correct itself. The X-direction floating platform (22) is fixedly connected to both sides along the Y direction with second correction magnetic blocks for driving the Y-direction floating platform (24) to correct itself.

9. A method for positioning and assembling a stator of an electric drive motor for pre-assembling a rotor, comprising using a stator positioning and assembly device for pre-assembling a rotor of an electric drive motor as described in any one of claims 1-8; characterized in that, include: Step 1: Position the stator based on the pin positioning component (4) so ​​that the stator is positioned at the center of the floating assembly (3); Step 2: Clamp and fix the stator onto the pin positioning assembly (4) based on the hook (6); Step 3: The stator is transported to the top of the stator cavity and driven to descend. The horizontal floating compensation component (2) drives the floating assembly seat (3) and the stator to float and compensate in the horizontal direction so that the stator is coaxially installed into the stator cavity, thereby completing the stator center positioning. Step 4: Based on the engagement of the pin positioning component (4) with the mounting holes on the housing, the angular positioning between the stator and the housing is achieved.

Images