Multi-point shaft sleeve outer diameter automatic rotation detection tool
By designing a multi-point automatic rotation detection fixture for the outer diameter of bushings, and utilizing components such as a lifting seat, a misalignment cylinder, and a motor to achieve automatic rotation of the bushings, the problems of low efficiency and large error in existing technologies are solved, and high-precision full-circumference detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU SUZHUN PRECISION MFG CO LTD
- Filing Date
- 2025-09-18
- Publication Date
- 2026-06-26
AI Technical Summary
Existing methods for detecting the outer diameter of bushings are inefficient and prone to human error, making it impossible to achieve high-precision, fully automated circumferential measurement.
Design a multi-point bushing outer diameter automatic rotation detection fixture, including a base plate, a support plate, a detection component and a rotation component, to realize automatic rotation and full circumference measurement of the bushing through a lifting seat, a misalignment cylinder, a motor and a friction roller.
It realizes fully automated measurement of the outer diameter of the bushing, improving the accuracy and efficiency of the inspection and reducing human error.
Smart Images

Figure CN224415968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inspection tools, specifically a multi-point automatic rotational inspection tooling for the outer diameter of bushings. Background Technology
[0002] As a key basic component in mechanical transmission systems, the outer diameter accuracy, roundness, and surface quality of bushings directly affect the assembly accuracy, transmission efficiency, and service life of the entire machine. Therefore, it is necessary to inspect the outer diameter during the manufacturing process of bushings.
[0003] Existing methods for detecting the outer diameter of bushings either involve manual inspection using calipers, which is inefficient and prone to human error, or they are limited in function and cannot achieve high-precision, fully automated circumferential measurement. Therefore, a multi-point automatic rotary detection fixture for the outer diameter of bushings is needed. Utility Model Content
[0004] The purpose of this utility model is to provide a multi-point automatic rotation detection fixture for the outer diameter of bushings, which can realize the detection of the outer diameter of bushings at different heights, automatically rotate the bushing during the detection process, realize full circumference measurement, and improve the detection accuracy.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-point bushing outer diameter automatic rotation detection fixture, including a base plate, an inclined surface on the base plate, a support plate detachably connected to the inclined surface, a detection component and a rotation component arranged beside the support plate, the detection component including a lifting seat, a fixing frame and a dial indicator, the rotation component including a misalignment cylinder, a bracket, a motor, a friction roller and a transmission wheel set, positioning plates fixedly connected to the inclined surface of the base plate relative to the detection component and the rotation component, a flipping cylinder fixedly connected to each positioning plate, and a limit plate fixedly connected to the rotating platform of the flipping cylinder.
[0006] Furthermore, there are multiple support plates, and the multiple support plates are mirror-arranged on the base plate.
[0007] Furthermore, the lifting seat is slidably connected to the seat plate, the fixed frame is fixedly connected to the lifting seat, and the dial indicator is fixedly connected to the lifting seat and the fixed frame.
[0008] Furthermore, the lifting seat has multiple insertion holes, and an elastic pin is fixedly connected to the seat plate. The movable end of the elastic pin passes through the seat plate and extends into the insertion hole.
[0009] Furthermore, the misaligned cylinder is fixedly connected to the seat plate, the bracket is fixedly connected to the piston rod of the misaligned cylinder, the transmission wheel set is fixedly connected to the bracket, the motor shaft is fixedly connected to the input end of the transmission wheel set, and the output end of the transmission wheel set is fixedly connected to the friction roller.
[0010] Furthermore, a baffle is fixedly connected to the side of the lifting seat on the seat plate, and the baffle plate is provided with a clearance groove corresponding to the dial indicator.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: it can realize the outer diameter detection at different heights of the bushing, automatically rotate the bushing during the detection process, realize full circumference measurement, and improve the detection accuracy. Attached Figure Description
[0012] Figure 1 This is a first-person perspective view of the entire utility model.
[0013] Figure 2 This is a schematic diagram of the entire utility model from a second perspective.
[0014] Figure 3 This is a first-view schematic diagram of the bushing detection status of this utility model.
[0015] Figure 4 This is a second-view schematic diagram of the bushing detection state of this utility model.
[0016] In the diagram: 1. Seat plate; 2. Support plate; 301. Lifting seat; 302. Fixing frame; 303. Dial indicator; 401. Misalignment cylinder; 402. Bracket; 403. Motor; 404. Friction roller; 405. Transmission wheel set; 5. Positioning plate; 6. Tilting cylinder; 601. Limiting plate; 7. Elastic pin; 8. Baffle. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Example:
[0019] Please see Figure 1-4An automatic rotary inspection fixture for the outer diameter of a multi-point bushing includes a base plate 1 with an inclined surface. A support plate 2 is detachably connected to the inclined surface. A detection component and a rotation component are arranged on the side of the support plate 2. The detection component includes a lifting seat 301, a fixed frame 302, and a dial indicator 303. The rotation component includes a misalignment cylinder 401, a bracket 402, a motor 403, a friction roller 404, and a transmission wheel set 405. Positioning plates 5 are fixedly connected to the inclined surface of the base plate 1 at positions relative to the detection component and the rotation component. A tilting cylinder 6 is fixedly connected to each positioning plate 5. A limit plate 601 is fixedly connected to the rotating platform of the tilting cylinder 6.
[0020] There are multiple support plates 2. The support plates 2 are used to support the bushing, and different height support plates 2 can be selected and installed on the seat plate 1 according to the different lengths of the bushing.
[0021] The lifting seat 301 is slidably connected to the base plate 1, allowing the lifting seat 301 to be adjusted in height on the base plate 1 to detect the outer diameter of the bushing at different positions. Multiple insertion holes 3011 are provided on the lifting seat 301, and a resilient pin 7 is fixedly connected to the base plate 1. After adjusting the height of the lifting seat 301, the movable end of the resilient pin 7 is pulled out and inserted through the base plate 1 into the corresponding insertion hole 3011 for limiting. During the rotation of the bushing, the probe of the dial indicator 303 contacts the surface of the bushing for detection.
[0022] The misalignment cylinder 401 is fixedly connected to the base plate 1. The misalignment cylinder 401 is used to drive the bracket 402 to translate so that the friction roller 404 presses the bushing against the positioning plate 5. The motor 403, in conjunction with the transmission wheel set 405, can drive the friction roller 404 to rotate. The rotation of the friction roller 404 will drive the bushing to rotate synchronously.
[0023] A baffle 8 is fixedly connected to the seat plate 1 next to the lifting seat 301. The baffle 8 is used to guide the feeding of the bushing. A clearance groove is provided on the baffle 8, which can make way for the lifting adjustment of the dial indicator 303.
[0024] The working principle of this utility model is as follows: When inspecting the bushing, the bushing to be inspected is placed on the support plate 2 along the positioning plate 5 and the baffle 8. Then, the tilting cylinder 6 drives the limiting plate 601 to tilt downwards to a horizontal position, thus limiting the bushing. Afterwards, the piston rod of the misalignment cylinder 401 retracts, and the friction roller 404 presses the bushing tightly against the positioning plate 5. The motor 403, in conjunction with the transmission wheel set 405, drives the friction roller 404 to rotate. The rotation of the friction roller 404 will drive the bushing to rotate synchronously. During operation, the probe of dial indicator 303 contacts the surface of the bushing for testing. During this process, the dial indicator pointer is visually observed to see if it exceeds the acceptable range. After the full circumference test is completed, the motor 403 stops. The height is adjusted by pulling out the movable end of the elastic pin 7 and sliding the lifting seat 301 up and down. After the adjustment is completed, the movable end of the elastic pin 7 is released, allowing the movable end of the elastic pin 7 to pass through the seat plate 1 and extend into the corresponding insertion hole 3011 for limiting. Then, the full circumference outer diameter test is performed at that location.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-point automatic rotary inspection fixture for the outer diameter of a bushing, characterized in that: The device includes a seat plate (1), which has an inclined surface. A support plate (2) is detachably connected to the inclined surface. A detection component and a rotating component are arranged on the side of the support plate (2). The detection component includes a lifting seat (301), a fixing frame (302), and a dial indicator (303). The rotating component includes a misalignment cylinder (401), a bracket (402), a motor (403), a friction roller (404), and a transmission wheel set (405). Positioning plates (5) are fixedly connected to the inclined surface of the seat plate (1) relative to the detection component and the rotating component. A flipping cylinder (6) is fixedly connected to each positioning plate (5). A limit plate (601) is fixedly connected to the rotating platform of the flipping cylinder (6).
2. The multi-point bushing outer diameter automatic rotation detection fixture according to claim 1, characterized in that: There are multiple support plates (2), and the multiple support plates (2) are mirror images of each other on the base plate (1).
3. The multi-point bushing outer diameter automatic rotation detection fixture according to claim 1, characterized in that: The lifting seat (301) is slidably connected to the seat plate (1), the fixing frame (302) is fixedly connected to the lifting seat (301), and the dial indicator (303) is fixedly connected to the lifting seat (301) and the fixing frame (302).
4. The multi-point bushing outer diameter automatic rotation detection fixture according to claim 3, characterized in that: The lifting seat (301) has multiple insertion holes (3011), and the seat plate (1) is fixedly connected with an elastic pin (7). The movable end of the elastic pin (7) passes through the seat plate (1) and extends into the insertion hole (3011).
5. The multi-point bushing outer diameter automatic rotation detection fixture according to claim 1, characterized in that: The misaligned cylinder (401) is fixedly connected to the seat plate (1), the bracket (402) is fixedly connected to the piston rod of the misaligned cylinder (401), the transmission wheel set (405) is fixedly connected to the bracket (402), the rotating shaft of the motor (403) is fixedly connected to the input end of the transmission wheel set (405), and the output end of the transmission wheel set (405) is fixedly connected to the friction roller (404).
6. The multi-point bushing outer diameter automatic rotation detection fixture according to claim 1, characterized in that: A baffle (8) is fixedly connected to the seat plate (1) next to the lifting seat (301), and the baffle (8) is provided with a clearance groove corresponding to the dial indicator (303).