Rotary positioning support mechanism for press fitting a rotor assembly

Abstract

The utility model discloses a kind of rotary positioning support mechanism for rotor assembly press mounting, it includes support, the load-bearing assembly of rotation being set in the support top, motor being fixed on the support and driving the rotation of the load-bearing assembly around Z axis and angle detection holding component being fixed on the support and detecting the rotation angle of the load-bearing assembly.The utility model can be positioned to rotor shaft axis in press mounting process, and after rotor shaft rotation operation, whether the rotor can be detected to rotate in place and the position after rotation can be position maintained.

Description

[Technical Field]

[0001] This utility model belongs to the field of motor rotor press-fitting technology, and in particular relates to a rotary positioning support mechanism for press-fitting rotor assemblies. [Background Technology]

[0002] During rotor manufacturing, multiple magnet blocks are pressed into the rotor shaft to form a permanent magnet rotor. End plates are installed at both ends of the magnet blocks to restrict their axial position on the rotor shaft. In motor design, to reduce cogging effect, torque ripple, vibration, and noise, and improve motor running smoothness, skewed pole arrangement is generally used. This involves arranging the rotor or stator laminations at a certain angle along the axial direction, rather than aligning them completely parallel. For assembling such rotor assemblies, the rotor shaft needs to be fixed to a rotary positioning mechanism. After each magnet block is pressed in, it needs to be rotated by a set angle so that when the next magnet block is pressed in, adjacent magnet blocks form a predetermined misalignment angle. Existing patent CN119995280B discloses a rotor pressing device with automatically adjustable angle, comprising a rotary positioning assembly, a pressing assembly above the rotary positioning assembly, and a clamping positioning assembly below the pressing assembly. The rotary positioning assembly is used to fix the rotor shaft and drive the rotor shaft to rotate. The clamping positioning assembly is used to clamp and fix an end plate or magnet block. The pressing assembly is used to press the end plate or magnet block on the clamping positioning assembly onto the rotor shaft on the rotary positioning assembly. In this device, during the pressing of the rotor shaft with the end plate or magnet block, there is no detection of whether the rotation angle of the rotor shaft is in place, and the perpendicularity of the rotor shaft axis cannot be effectively guaranteed. When the rotor shaft is subjected to large pressure, there is a risk of angular displacement, resulting in the misalignment angle accuracy of the skew pole processing not being effectively guaranteed.

[0003] Therefore, it is necessary to provide a new rotary positioning support mechanism for press-fitting rotor assemblies to solve the aforementioned technical problems. [Utility Model Content]

[0004] The main objective of this invention is to provide a rotary positioning support mechanism for press-fitting rotor assemblies. During the press-fitting process, the mechanism can position the rotor shaft axis downwards, and after the rotor shaft rotation operation, it can detect whether the rotor has rotated into position and maintain the position after rotation.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a rotary positioning support mechanism for press-fitting rotor assembly, comprising a bracket, a bearing assembly rotatably disposed on the top of the bracket, a motor fixed on the bracket and driving the bearing assembly to rotate around the Z-axis, and an angle detection and holding assembly fixed on the bracket and detecting the rotation angle of the bearing assembly.

[0006] Furthermore, the bearing assembly includes a mounting sleeve fixed in the perforation at the top of the bracket, a rotating mounting seat rotatably mounted on the mounting sleeve via a bearing, and a bearing seat fixed on the top of the rotating mounting seat; the bearing assembly has an axially penetrating clearance perforation in the middle.

[0007] Furthermore, the rotating mounting base includes a first section and a second section along the axial direction, the diameter of the second section being larger than the diameter of the first section; the first section extends into the mounting sleeve and is rotatably mounted in the mounting sleeve via a bearing, and the second section is located above the top of the mounting sleeve.

[0008] Furthermore, a synchronous pulley is fixedly mounted on the outer periphery of the rotary mounting base; the rotating end of the motor is connected to the synchronous pulley via a synchronous belt.

[0009] Furthermore, an annular scale is provided on the top surface of the rotary mounting base.

[0010] Furthermore, the lower surface of the turntable of the rotary mounting base is provided with a plurality of support rollers arranged in a ring.

[0011] Furthermore, the angle detection and holding assembly includes a first cylinder fixed on the bracket, a detection rod driven by the first cylinder to move horizontally, and a sensor for detecting the extension position of the detection rod. The circumferential surface of the support is provided with a plurality of detection slots for the detection rod to be inserted.

[0012] Furthermore, the support base is provided with a stepped hole, and the inner wall surface of the stepped hole is provided with a number of annularly distributed positioning protrusions.

[0013] Furthermore, it also includes a lower centering component located below the bearing component and used to center and position the axis of the rotor shaft on the bearing component.

[0014] Furthermore, the lower centering assembly includes a second cylinder fixed on the bracket and a centering top shaft driven by the second cylinder to move up and down. The axis of the centering top shaft is collinear with the support axis of the bearing seat, and the top end is a pointed structure.

[0015] Compared with the prior art, the advantages of the rotary positioning support mechanism for rotor assembly press-fitting of this utility model are as follows: by setting an angle detection and holding component, in conjunction with the detection slot on the bearing seat, the rotation angle of the bearing seat can be effectively detected and maintained at a specific angle position, ensuring the accuracy of rotor assembly press-fitting and product quality; by setting a centering component, the axis of the rotor shaft is positioned during the rotor assembly press-fitting process, ensuring that the axis of the rotor shaft is vertical and the center position is accurate, further ensuring the assembly quality of the rotor assembly. [Attached Image Description]

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the carrier component in an embodiment of this utility model;

[0019] Figure 4 This is a partial structural schematic diagram of the carrier component in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the angle detection and holding component in an embodiment of the present invention;

[0021] The numbers in the diagram represent:

[0022] 100 - Rotary positioning support mechanism for press-fitting rotor assembly;

[0023] 200-Rotor assembly;

[0024] 1-Bracket; 2-Bearing component; 21-Mounting sleeve; 22-Rotating mounting base; 23-Bearing base; 231-Stepped hole; 232-Positioning protrusion; 233-Detection slot; 24-Avoidance through hole; 25-Synchronous pulley; 26-Support roller; 27-Annular support rail; 28-Annular dial; 3-Motor; 31-Synchronous belt; 4-Angle detection and holding component; 41-First cylinder; 42-Detection rod; 43-Sensor; 5-Lower centering component; 51-Second cylinder; 52-Centering and shaft.

Detailed Implementation Methods

[0025] Example 1:

[0026] Please refer to Figures 1-5 This embodiment is a rotary positioning support mechanism 100 for press-fitting rotor assembly, which includes a bracket 1, a bearing assembly 2 rotatably disposed on the top of the bracket 1, a motor 3 fixed on the bracket 1 and driving the bearing assembly 2 to rotate around the Z-axis, an angle detection and holding assembly 4 fixed on the bracket 1 and detecting the rotation angle of the bearing assembly 2 and maintaining the angle position, and a lower centering assembly 5 located below the bearing assembly 2 and centering the axis of the rotor shaft on the bearing assembly 2.

[0027] The bearing assembly 2 includes a mounting sleeve 21 fixed in a through hole at the top of the bracket 1, a rotating mounting seat 22 rotatably mounted on the mounting sleeve 21 via a bearing, and a bearing seat 23 fixed to the top of the rotating mounting seat 22. The bearing assembly 2 has an axially penetrating clearance hole 24 in the middle to allow clearance from the rotor shaft and the lower centering assembly 5.

[0028] The rotating mounting base 22 includes a first section and a second section (not shown in the figure) along the axial direction. The diameter of the second section is larger than that of the first section. The first section extends into the mounting sleeve 21 and is rotatably mounted in the mounting sleeve 21 by bearings. The second section is located above the top of the mounting sleeve 21.

[0029] A synchronous pulley 25 is fixedly mounted on the outer periphery of the rotary mounting base 22. Specifically, the synchronous pulley 25 is mounted on the outer periphery of the second section. The rotating end of the motor 3 is connected to the synchronous pulley 25 via a synchronous belt 31, thereby driving the rotary mounting base 22 to rotate. An annular scale 28 is provided on the top surface of the rotary mounting base 22 for zero-angle calibration of the rotary mounting base 22.

[0030] To improve the rotational stability of the rotary mounting base 22, a plurality of annularly distributed support rollers 26 are provided on the lower surface of the rotary mounting base 22 (specifically, the lower surface of the second section), and an annular support rail 27 is provided below the support rollers 26. Since the portion of the second section radially extending beyond the mounting sleeve 21 lacks support, the rotary mounting base 22 will be subjected to significant pressing force during the press-fitting of the rotor assembly 200. This poses a risk of the rotary mounting base 22 becoming skewed, and may also lead to rotational imbalance, causing the axis of the rotary mounting base 22 to deviate. To avoid these issues, this embodiment provides annularly distributed support rollers 26 on the lower surface of the second section of the rotary mounting base 22. These support rollers 26 provide bottom support for the portion of the second section radially extending beyond the mounting sleeve 21, ensuring the rotational balance of the rotary mounting base 22. Furthermore, by providing annular support rollers 26, the bearing assembly 2 can withstand pressures up to 20 tons, providing strong support for the press-fitting of the rotor assembly.

[0031] The angle detection and holding assembly 4 includes a first cylinder 41 fixed on the bracket 1, a detection rod 42 driven by the first cylinder 41 to move horizontally, and a sensor 43 for detecting the extended position of the detection rod 42. To cooperate with the detection rod 42, several detection slots 233 are provided on the circumferential surface of the support 23 for the detection rod 42 to be inserted. The position of the detection slots 233 is set according to the pole slot angle of the rotor assembly's skewed pole treatment. In the initial state, the detection slots 233 extend for detection. If they can be inserted normally into the detection slots 233, the initial angle position of the support 23 is determined to be correct, and the extended state is maintained, locking the angle position of the support 23. After the first magnet block is pressed in, the motor 3 drives the support 23 to rotate by a set angle, and the detection slots 233 extend again for detection. If they can be inserted normally into the detection slots 233, the rotation angle position of the support 23 is determined to be correct, and the extended state is maintained, locking the angle position of the support 23. This achieves the detection of whether the rotation angle of the support 23 is correct and the positioning of the angle position of the support 23.

[0032] In order to position the initial angle of the rotor shaft and improve the rotational driving force of the rotor shaft, the bearing seat 23 is provided with a stepped hole 231 to achieve axial positioning of the rotor shaft. Several annularly distributed positioning protrusions 232 are provided on the inner wall surface of the stepped hole 231, which cooperate with the groove on the convex ring on the rotor shaft to achieve angular positioning of the rotor shaft.

[0033] The lower centering assembly 5 includes a second cylinder 51 fixed on the bracket 1 and a centering top shaft 52 driven by the second cylinder 51 to move up and down. The axis of the centering top shaft 52 is collinear with the support axis of the bearing seat 23, and the top end is a pointed structure. When the rotor shaft is placed on the bearing seat 23, the centering top shaft 52 moves upward and its top end extends into the hole groove at the bottom end of the rotor shaft to achieve bottom positioning of the rotor shaft axis.

[0034] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A rotational positioning support mechanism for press fitting a rotor assembly, characterized by: It includes a bracket, a load-bearing component rotatably mounted on top of the bracket, a motor fixed to the bracket and driving the load-bearing component to rotate around the Z-axis, and an angle detection and holding component fixed to the bracket and detecting the rotation angle of the load-bearing component.

2. The rotational indexing support mechanism for press fitting a rotor assembly as in claim 1 wherein: The load-bearing assembly includes a mounting sleeve fixed in a perforation at the top of the bracket, a rotating mounting seat rotatably mounted on the mounting sleeve via a bearing, and a load-bearing seat fixed on the top of the rotating mounting seat; the load-bearing assembly has an axially penetrating clearance perforation in the middle.

3. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: The rotating mounting base includes a first section and a second section along the axial direction, the diameter of the second section being larger than the diameter of the first section; the first section extends into the mounting sleeve and is rotatably mounted in the mounting sleeve via a bearing, and the second section is located above the top of the mounting sleeve.

4. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: A synchronous pulley is fixedly mounted on the outer periphery of the rotary mounting base; the rotating end of the motor is connected to the synchronous pulley via a synchronous belt.

5. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: An annular scale is provided on the top surface of the rotary mounting base.

6. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: The lower surface of the turntable of the rotary mounting base is provided with a number of support rollers arranged in a ring.

7. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: The angle detection and holding assembly includes a first cylinder fixed on the bracket, a detection rod driven by the first cylinder to move horizontally, and a sensor for detecting the extension position of the detection rod. The circumferential surface of the support is provided with a plurality of detection slots for the detection rod to be inserted.

8. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: The support base is provided with a stepped hole, and the inner wall surface of the stepped hole is provided with a number of circumferentially distributed positioning protrusions.

9. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 2, wherein: It also includes a lower centering component located below the bearing component and used to center and position the axis of the rotor shaft on the bearing component.

10. The rotational indexing support mechanism for press fitting a rotor assembly as set forth in claim 9, wherein: The lower centering assembly includes a second cylinder fixed on the bracket and a centering top shaft driven by the second cylinder to move up and down. The axis of the centering top shaft is collinear with the support axis of the bearing seat, and the top end is a pointed structure.

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