Universal hub assembly weld runout calibration fixture

Abstract

This utility model provides a universal hub assembly runout calibration fixture after welding, belonging to the field of calibration fixture technology. It includes a dial indicator support, a dial indicator, a clamping module, and a calibration module. The clamping module is used to clamp the hub assembly, and the calibration module is used to calibrate the runout of the hub assembly. The calibration module includes a calibration slide assembly and a top block. The calibration slide assembly includes an X-direction calibration slide that can move along the axial direction of the hub assembly and a Y-direction calibration slide that can move along the radial direction of the hub assembly. The top block is connected to the Y-direction calibration slide. By using a dial indicator to detect the runout of the hub assembly, for locations where the runout exceeds the standard range, the positions of the X-direction and Y-direction calibration slides are adjusted according to the runout value. Calibration is performed by using the top block to press against the end face of the hub assembly. The operation is simple and convenient, and the calibration effect is good, significantly improving the calibration efficiency of the hub assembly and effectively ensuring product quality.

Description

Technical Field

[0001] This utility model relates to the field of calibration tooling technology, and in particular to a universal hub assembly post-weld runout calibration tooling. Background Technology

[0002] The hub assembly in an electric motor is composed of a shaft and a hub welded together. After welding, the hub will undergo thermal deformation due to the heat during welding. The runout of the hub after thermal deformation is generally in the range of 0.25mm to 0.3mm. If it is not calibrated, it will affect the quality of the product after subsequent assembly. At present, there is no suitable tooling for calibrating the runout of the hub, resulting in low calibration efficiency. In order to address the above-mentioned defects, this application is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a universal hub assembly runout calibration fixture after welding, which solves the problem of low efficiency in calibrating hub runout at present.

[0004] To address the aforementioned problems, this utility model provides a universal hub assembly runout calibration fixture after welding, comprising a dial indicator support, a dial indicator, a clamping module, and a calibration module. The dial indicator is used to detect the runout of the hub assembly. The dial indicator support supports the dial indicator, maintaining it in a detection posture or limiting its range of motion. The clamping module clamps the hub assembly and includes two center fixing seats, a fixed center, a movable center, and a telescopic component. The fixed center is mounted on one of the center fixing seats, the movable center is connected to the telescopic component, and the telescopic component is mounted on the other center fixing seat. The calibration module calibrates the runout of the hub assembly. The calibration module includes a calibration slide assembly and a top block. The calibration slide assembly includes an X-direction calibration slide movable along the axial direction of the hub assembly and a Y-direction calibration slide movable along the radial direction of the hub assembly. The Y-direction calibration slide is mounted on the X-direction calibration slide, and the top block is connected to the Y-direction calibration slide.

[0005] The runout of the hub assembly is detected using a dial indicator. For locations where the runout exceeds the standard range, the positions of the X-direction calibration slide and the Y-direction calibration slide are adjusted according to the runout value. The end face of the hub assembly is then calibrated by pressing the top block against it.

[0006] According to one embodiment of the present invention, the Y-direction calibration slide and the X-direction calibration slide are slidably fitted together. The calibration module further includes a drive screw, which is connected to the Y-direction calibration slide. The Y-direction calibration slide is moved by rotating the drive screw.

[0007] According to one embodiment of the present invention, the calibration module further includes a rack, a gear, and an operating shaft. The operating shaft is mounted on the X-direction calibration slide and connected to the gear. By rotating the operating shaft, the gear moves along the rack, thereby driving the X-direction calibration slide.

[0008] According to one embodiment of the present invention, both the drive screw and the operating shaft are connected to handwheels for easy operation.

[0009] According to one embodiment of the present invention, the universal hub assembly runout calibration fixture after welding also includes a base plate. The dial indicator support, the center fixing seat and the calibration slide assembly are all mounted on the base plate, which improves the integration of the fixture and facilitates its arrangement and transfer.

[0010] According to one embodiment of the present invention, the X-direction calibration slide and the Y-direction calibration slide are stacked to further improve integration and reduce tooling volume.

[0011] According to one embodiment of the present invention, the telescopic component includes a pneumatic cylinder, and other options include an electric cylinder or a hydraulic cylinder.

[0012] According to one embodiment of the present invention, the top block is made of nylon.

[0013] According to one embodiment of the present invention, the dial indicator support includes a rotating shaft, and the dial indicator is mounted on the rotating shaft. The working state of the dial indicator is switched by rotating the dial indicator.

[0014] According to one embodiment of the present invention, the dial indicator support further includes a support frame, and the rotating shaft is mounted on the support frame.

[0015] According to one embodiment of the present invention, the rotating shaft is movably mounted on the support frame for adjusting the position of the dial indicator in the radial direction of the hub assembly.

[0016] The beneficial effects of this utility model are that by using a dial indicator to detect the runout of the hub assembly, for positions where the runout exceeds the standard range, the positions of the X-direction calibration slide and the Y-direction calibration slide are adjusted according to the runout value, and the end face of the hub assembly is calibrated by pressing the top block against it. The operation is simple and convenient, the calibration effect is good, the calibration efficiency of the hub assembly is greatly improved, and the product quality can be effectively guaranteed. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 A schematic diagram of the overall structure of a universal hub assembly runout calibration fixture after welding.

[0019] Figure 2A schematic diagram of another perspective of the fixture for calibrating runout after welding of a general hub assembly;

[0020] Figure 3 This is a schematic diagram of the driving method of the calibration slide assembly in Example 2. Detailed Implementation

[0021] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0022] Example 1:

[0023] Universal hub assembly weld runout calibration fixture, such as Figure 1 It includes a base plate 1, a dial indicator support body, a dial indicator 12, a clamping module, and a calibration module.

[0024] The dial indicator support can be any frame that can mount the dial indicator 12. The dial indicator support is used to support the dial indicator 12 and keep the dial indicator 12 in the testing posture without needing to be held by hand. The dial indicator 12 is used to detect the runout of the hub assembly.

[0025] The clamping module is used to clamp the hub assembly 6. The clamping module includes two center fixing seats 2, a fixed center 4, a movable center 5, and a telescopic component 3. The two center fixing seats 2 are mounted on the base plate 1, one on the left and one on the right. The fixed center 4 is mounted on one of the center fixing seats 2. The movable center 5 is connected to the telescopic component 3, which is mounted on the other center fixing seat 2. In this embodiment, the telescopic component 3 includes a cylinder, or alternatively, an electric cylinder or a hydraulic cylinder. Both the fixed center 4 and the movable center 5 can be rotatably mounted, allowing the hub assembly 6 to rotate after clamping it.

[0026] The calibration module is used to calibrate the runout of the hub assembly. The calibration module includes a calibration slide assembly and a top block 16. The calibration slide assembly includes an X-direction calibration slide 8 that can move along the axial direction of the hub assembly and a Y-direction calibration slide 7 that can move along the radial direction of the hub assembly. The Y-direction calibration slide 7 is mounted on the X-direction calibration slide 8, and the top block 16 is connected to the Y-direction calibration slide 7.

[0027] The X-direction calibration slide 8 and the Y-direction calibration slide 7 are stacked to further improve integration and reduce tooling volume.

[0028] The X-direction calibration slide 8 and the Y-direction calibration slide 7 can be moved manually or driven by cylinders, electric linear modules, etc. For example, two sets of cylinders can be set to drive the X-direction calibration slide 8 and the Y-direction calibration slide 7 to move respectively.

[0029] To prevent the top block 16 from damaging the surface of the hub assembly 6, in this embodiment, the top block 16 is made of nylon.

[0030] The top fixing seat 2 and the calibration slide assembly are both mounted on the base plate 1, which improves the integration of the tooling and facilitates its layout and relocation. The dial indicator support can be optionally mounted on the base plate 1 or set separately.

[0031] Usage steps: as follows Figure 2 Take the workpiece hub assembly 6, use the fixed center 4 to hold the shaft center hole, press the safety valve switch of the cylinder to control the movable center 5 to hold the right end of the hub assembly 6, and keep the hub assembly in a horizontal state; use the dial indicator 12 to detect the runout of the hub assembly 6, make the dial indicator 12 contact the left end face of the hub assembly 6, rotate the hub assembly 6 to detect, for positions where the runout exceeds the standard range, adjust the positions of the X direction calibration slide 8 and the Y direction calibration slide 7 according to the runout value, and use the top block 16 to press the end face of the hub assembly 6 for calibration. The position pressed by the top block 16 is the highest position measured by the dial indicator 12, which generally needs to be calibrated to within 0.1mm.

[0032] Using the tooling provided in this solution for calibration, the calibration time for a single piece is reduced to 1.4 minutes, and one person can calibrate 680 pieces every 8 hours, which greatly improves efficiency.

[0033] Example 2:

[0034] Based on Example 1, this example adopts a structure that manually controls the movement of the Y-direction calibration slide 7 and the X-direction calibration slide 8.

[0035] Specifically, such as Figure 2 , Figure 3 The Y-direction calibration slide 7 and the X-direction calibration slide 8 are slidably fitted together. The Y-direction calibration slide 7 and the X-direction calibration slide 8 are respectively provided with slide rails and slide grooves (the slide rails can be set on the Y-direction calibration slide 7 or the X-direction calibration slide 8) to achieve the sliding fit. The calibration module also includes a drive screw 21, which is connected to a threaded hole on the Y-direction calibration slide 7. The Y-direction calibration slide 7 has a hollow structure inside. The X-direction calibration slide 8 is provided with a stop block. The drive screw 21 is provided with limit blocks 22 located on the left and right sides of the stop block to limit the axial movement of the drive screw 21. One end of the drive screw 21 extends out of the Y-direction calibration slide 7 and is connected to the handwheel 9. The Y-direction calibration slide 7 is moved by rotating the drive screw 21.

[0036] The calibration module also includes a rack 18, a gear 19, and an operating shaft 20. Two slide grooves 11 are provided on the base plate 1. The bottom of the X-direction calibration slide 8 is provided with a slide rail that can slide in the slide grooves 11. The rack 18 is mounted on the base plate 1. The operating shaft 20 is mounted on the X-direction calibration slide 8 and connected to the gear 19. The X-direction calibration slide 8 has a cavity in the middle to accommodate the gear 19. By rotating the operating shaft 20, the gear 19 moves along the rack 18, thereby driving the X-direction calibration slide 8. One end of the operating shaft 20 extends to the outside of the X-direction calibration slide 8 and the handwheel 9 for easy operation.

[0037] Example 3:

[0038] Based on embodiment 1 or 2, in this embodiment, the dial indicator support includes a dial indicator support base 10, a support frame 13 and a rotating shaft 14. The dial indicator 12 is mounted on the rotating shaft 14, and the working state of the dial indicator 12 is switched by rotating the dial indicator 12.

[0039] The rotating shaft 14 is rotatably and axially movable on the support frame 13. The support frame 13 has holes for mounting the rotating shaft 14. The two can be coupled via linear bearings or a simple plug-in connection. During testing, the dial indicator 12 can be manually adjusted for its orientation. Figure 1 Rotate dial indicator 12 90 degrees to make the probe contact the surface of hub assembly 6. Adjust the position of rotating shaft 14 axially to measure different radial positions of hub assembly 6. A certain damping can be set between support frame 13 and rotating shaft 14 to maintain its state. Alternatively, bolts can be installed on support frame 13, and after adjusting rotating shaft 14, tighten the rotating shaft 14 with screws to fix it.

[0040] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A general-purpose hub assembly post-weld runout calibration fixture, characterized by: The system includes a dial indicator support, a dial indicator (12), a clamping module, and a calibration module. The dial indicator (12) is used to detect the runout of the hub assembly, and the dial indicator support is used to support the dial indicator (12). The clamping module is used to clamp the hub assembly. The clamping module includes two center fixing seats (2), a fixed center (4), a movable center (5), and a telescopic component (3). The fixed center (4) is installed on one of the center fixing seats (2), the movable center (5) is connected to the telescopic component (3), and the telescopic component (3) is installed on the other center fixing seat (2). The calibration module is used to calibrate the runout of the hub assembly. The calibration module includes a calibration slide assembly and a top block (16). The calibration slide assembly includes an X-direction calibration slide (8) that can move along the axial direction of the hub assembly and a Y-direction calibration slide (7) that can move along the radial direction of the hub assembly. The Y-direction calibration slide (7) is installed on the X-direction calibration slide (8), and the top block (16) is connected to the Y-direction calibration slide (7).

2. The universal hub assembly post-weld runout calibration fixture of claim 1, wherein: The Y-direction calibration slide (7) and the X-direction calibration slide (8) are slidably fitted together. The calibration module also includes a drive screw (21), which is connected to the Y-direction calibration slide (7). The Y-direction calibration slide (7) is moved by rotating the drive screw (21).

3. The universal hub assembly post-weld runout calibration fixture of claim 2, wherein: The calibration module also includes a rack (18), a gear (19) and an operating shaft (20). The operating shaft (20) is mounted on the X-direction calibration slide (8) and connected to the gear (19). By rotating the operating shaft (20), the gear (19) moves along the rack (18), thereby driving the X-direction calibration slide (8).

4. The universal hub assembly post-weld runout calibration fixture of claim 3, wherein: Handwheels (9) are connected to both the drive screw (21) and the operating shaft (20).

5. The universal hub assembly post-weld runout calibration fixture of any of claims 1-4, wherein: The universal hub assembly weld runout calibration fixture also includes a base plate (1), on which the dial indicator support, the top fixing seat (2) and the calibration slide assembly are all mounted.

6. The universal hub assembly post-weld runout calibration fixture of any of claims 1-4, wherein: The X-direction calibration slide (8) and the Y-direction calibration slide (7) are stacked together.

7. The universal hub assembly post-weld runout calibration fixture of any of claims 1-4, wherein: The top block (16) is made of nylon.

8. The universal hub assembly post-weld runout calibration fixture of any of claims 1-4, wherein: The dial indicator support includes a rotating shaft (14), and the dial indicator (12) is mounted on the rotating shaft (14). The working state of the dial indicator (12) is switched by rotating the dial indicator (12).

9. The universal hub assembly post-weld runout calibration fixture of claim 8, wherein: The dial indicator support also includes a support frame (13), and the rotating shaft (14) is mounted on the support frame (13).

10. The universal hub assembly post-weld runout calibration fixture of claim 9, wherein: The rotating shaft (14) is movably mounted on the support frame (13) for adjusting the position of the dial indicator (12) in the radial direction of the hub assembly.

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