Motor housing coaxial degree automatic correction device

Abstract

This utility model discloses an automatic coaxiality correction device for motor housings. The motor housing is placed on a fixed mechanism with its top surface on top and bottom surface on the bottom. The rear end of the correction plate of the correction mechanism is connected to an X-axis drive motor and a Y-axis drive motor. The correction plate is located below the motor housing. The correction plate moves until its front end engages with a pin extending from the bottom surface of the motor housing. A feeding mechanism is located above the fixed mechanism to pick up and place the motor housing on the fixed mechanism. A detection mechanism is located below the fixed mechanism to collect the contour circle of the bottom surface of the motor housing and the outer diameter of the pin for comparison of their respective X and Y-axis offsets. The X-axis drive motor and the Y-axis drive motor drive the correction plate to move, correcting the pin according to its X and Y-axis offsets. This device can be connected to a production line. A visual inspection camera automatically collects and compares data and can drive the correction plate to move by a specified offset. It performs online detection and correction of coaxiality dimensional deviations after pin riveting, improving product qualification rate.

Description

Technical Field

[0001] This application relates to a motor housing testing device, and in particular to an automatic motor housing coaxiality correction device. Background Technology

[0002] Products like water pump motor housings undergo multiple deep-drawing processes, which are complex and result in instability during production, leading to dimensional deviations. Furthermore, the stainless steel material can cause springback during the riveting of pins to the top surface, resulting in non-coaxiality issues and a low yield rate after press-fitting. To avoid unnecessary product scrap and rework, which wastes time and resources, a straightening process needs to be added to improve the yield rate, along with online full-inspection functionality. Utility Model Content

[0003] Purpose of this utility model: The purpose of this application is to provide an automatic coaxiality correction device for motor housing, which detects and corrects the coaxiality dimensional deviation after pin riveting.

[0004] Technical Solution: An automatic coaxiality correction device for motor housing includes a fixing mechanism, a detection mechanism, a correction mechanism, and a feeding mechanism. The correction mechanism includes a correction plate, an X-axis drive motor, and a Y-axis drive motor. The motor housing is placed on the fixing mechanism with its top surface on top and its bottom surface on the bottom. The correction plate is located below the motor housing. The rear end of the correction plate is connected to the X-axis drive motor and the Y-axis drive motor. The correction plate moves until its front end engages with a pin extending from the bottom surface of the motor housing. The feeding mechanism is located above the fixing mechanism and picks up and places the motor housing on the fixing mechanism. The detection mechanism is located below the fixing mechanism and collects the bottom contour circle of the motor housing and the outer diameter of the pin for comparison of their respective X and Y offsets. The X-axis drive motor and the Y-axis drive motor drive the correction plate to move, correcting it according to the X and Y offsets of the pin.

[0005] Furthermore, the fixing mechanism includes a mounting base, a support plate, and a clamping arm; the support plate is fixed to the mounting base, the support plate has a through hole that extends laterally to the edge of the support plate, the motor housing is placed on the support plate, a pin extending from the bottom surface of the motor housing is located in the through hole, and the straightening plate moves horizontally within the through hole; the clamping arm is connected to the mounting base above the support plate, and the clamping arm fixes the motor housing placed on the support plate.

[0006] Furthermore, the detection mechanism is a visual inspection camera.

[0007] Furthermore, the feeding mechanism includes a T-shaped support, on which a primary translation slider is mounted. A first gripper is installed on the primary translation slider, and a secondary translation slider is mounted on the primary translation slider. A second gripper is installed on the secondary translation slider, and the first and second grippers are located in a horizontally parallel position. The two translation sliders can move synchronously or independently, allowing for flexible control of the translation of the first and second grippers.

[0008] Furthermore, an L-shaped locking hole is provided at the front end of the correction plate, and the L-shaped shape of the locking hole is stably engaged with the pin.

[0009] Beneficial effects: The automatic correction device of this application can be connected to the production line to perform online inspection and coaxiality correction of products. The visual inspection camera automatically collects and compares data, and can drive the correction plate to move by a specified offset to detect and correct the coaxiality dimensional deviation after pin riveting. This device can increase the coaxiality qualification rate of pin riveting from 50-90% to over 95%, greatly improving the product qualification rate. Attached Figure Description

[0010] Figure 1 This is a front view of the automatic correction device of this application;

[0011] Figure 2 for Figure 1 Top view;

[0012] Figure 3 for Figure 1 Rear view;

[0013] Figure 4 for Figure 1 The right view;

[0014] Figure 5 This is a bottom view of the fixed mechanism. Detailed Implementation

[0015] The present application will be further explained below with reference to the accompanying drawings and specific embodiments.

[0016] An automatic coaxiality correction device for motor housing, as shown in the attached figure. Figures 1-5 As shown, it includes a fixing mechanism 1, a testing mechanism 2, a straightening mechanism 3, and a feeding mechanism 4.

[0017] The feeding mechanism 4 includes a T-shaped support 41, whose vertical rod 411 is used for vertical installation. A primary translation slider 42 is installed on the front side of its horizontal rod 412. The primary translation slider 42 translates laterally along the horizontal rod 412. A first gripper 44 is installed on the primary translation slider 42. The first gripper 44 translates laterally synchronously with the primary translation slider 42. The primary translation slider 42 has a certain length. A secondary translation slider 43 is installed on the front side of the primary translation slider 42. The secondary translation slider 43 translates laterally along the primary translation slider 42. A second gripper 45 is installed on the secondary translation slider 43. The second gripper 45 translates laterally synchronously with the secondary translation slider 43. The first gripper 44 and the second gripper 45 are located in a parallel lateral position. The first gripper 44 and the second gripper 45 are used to grip the motor housing.

[0018] The fixing mechanism 1 is located below the feeding mechanism 4 and includes a mounting base 11, a support plate 12, and a clamping arm 13. The support plate 12 is laid flat and fixed to the mounting base 11. The support plate 12 has a through hole 121 that extends laterally to the edge of the support plate 12. The top surface of the motor housing is on top and the bottom surface is on the support plate 12. A pin is riveted to the top surface of the motor housing, and its lower end extends out of the bottom surface of the motor housing. When the motor housing is placed on the support plate, the lower end of the pin is in the through hole 121. The clamping arm 13 is above the support plate 12 and connected to the mounting base 11. The clamping arm 13 has a double-arm opening and closing structure. When the double arms are closed, they hold the motor housing placed on the support plate 12 and fix it. When the double arms are opened, they release the fixation of the motor housing.

[0019] The correction mechanism 3 includes a correction plate 31, an X-axis drive motor 32, and a Y-axis drive motor 33. The correction plate 31 is laid flat, and its rear end is connected to the X-axis drive motor 32 and the Y-axis drive motor 33. The front end of the correction plate 31 extends from the edge of the support plate 12 into the through hole 121 and engages with the lower end of the pin shaft below the bottom surface of the motor housing. An L-shaped locking hole 311 is provided at the front end of the correction plate 31 to engage the lower end of the pin shaft deep within the locking hole 311. The X-axis drive motor 32 and the Y-axis drive motor 33 drive the correction plate 31 to translate in the X and Y directions in the horizontal plane.

[0020] The inspection unit 2 is located below the fixed unit 1, and uses a visual inspection camera and has a visual inspection system.

[0021] The first gripper 44 grasps the motor housing 5 to be inspected, moves it to the left and transports it above the support plate 12. The first gripper 44 descends to place the motor housing on the support plate 12 and then rises back to its original position. The clamping arm 13 holds and fixes the motor housing. The inspection mechanism 2 collects the bottom contour circle of the motor housing and the outer diameter of the pin shaft, compares the X and Y offsets of the two circles, calculates the coaxiality, and determines whether the product is qualified. If the coaxiality exceeds the minimum standard, the correction mechanism 3 is activated. The correction plate 31 moves into the through hole 121 and engages with the lower end of the pin shaft through the locking hole 311. According to the X and Y offsets of the pin shaft (the offset is usually a few microns), the X-axis drive motor 32 and the Y-axis drive motor 33 drive the correction plate 31 to move, thereby correcting the pin shaft. After correction, the inspection mechanism 2 collects and calculates again to determine whether the product is qualified. After the correction is completed, the first gripper 44 descends to grab the motor housing and then rises, continuing to move to the left to transport the motor housing away. The other motor housing to be tested on the second gripper 45 is transported to the support plate 12 for testing.

[0022] The automatic calibration device of this application can be connected to the production line to perform online inspection and coaxiality correction of products. The visual inspection camera automatically collects and compares data, and can drive the calibration plate to move by a specified offset to detect and correct the coaxiality dimensional deviation after pin riveting. This device can increase the coaxiality qualification rate of pin riveting from 50-90% to over 95%, greatly improving the product qualification rate.

Claims

1. An automatic coaxiality correction device for motor housing, characterized in that: The system includes a fixing mechanism (1), a detection mechanism (2), a straightening mechanism (3), and a feeding mechanism (4). The straightening mechanism (3) includes a straightening plate (31), an X-axis drive motor (32), and a Y-axis drive motor (33). The motor housing is placed on the fixing mechanism (1), with the top surface of the motor housing facing up and the bottom surface facing down. The straightening plate (31) is located below the motor housing. The rear end of the straightening plate (31) is connected to the X-axis drive motor (32) and the Y-axis drive motor (33). 1) Move to its front end and engage with the pin extending from the bottom surface of the motor housing. The feeding mechanism (4) is located above the fixing mechanism (1) and picks up and places the motor housing on the fixing mechanism (1). The detection mechanism (2) is located below the fixing mechanism (1) and collects the outline circle of the bottom surface of the motor housing and the outer diameter of the pin for comparison of their respective X and Y offsets. The X-axis drive motor (32) and the Y-axis drive motor (33) drive the correction plate (31) to move and correct it according to the X and Y offsets of the pin.

2. The automatic coaxiality correction device for motor housing according to claim 1, characterized in that: The fixing mechanism (1) includes a mounting base (11), a support plate (12), and a clamping arm (13). The support plate (12) is fixed to the mounting base (11). A through hole (121) is provided on the support plate (12) and extends laterally to the edge of the support plate (12). The motor housing is placed on the support plate (12). A pin extending from the bottom surface of the motor housing is located in the through hole (121). The straightening plate (31) moves horizontally in the through hole (121). The clamping arm (13) is connected to the mounting base (11) above the support plate (12). The clamping arm (13) fixes the motor housing placed on the support plate (12).

3. The automatic coaxiality correction device for motor housing according to claim 1, characterized in that: The detection mechanism (2) is a visual inspection camera.

4. The automatic coaxiality correction device for motor housing according to claim 1, characterized in that: The feeding mechanism (4) includes a T-shaped support (41), on which a first-stage translation slider (42) is arranged, on which a first gripper (44) is installed, on which a second-stage translation slider (43) is arranged, and on which a second gripper (45) is installed, wherein the first gripper (44) and the second gripper (45) are located in a horizontal parallel position.

5. The automatic coaxiality correction device for motor housing according to claim 1, characterized in that: The front end of the correction plate (31) has an L-shaped card hole (311).

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