Device for detecting coaxiality of multiple holes of main speed reducer box body
By designing a multi-hole coaxiality detection device for the main reducer housing and utilizing a combination of a reference shaft, bearings, a reference disc, and a micrometer, efficient and accurate on-site coaxiality detection of the main reducer is achieved, solving the problems that are difficult to detect in existing technologies and improving detection efficiency and accuracy.
Patent Information
- Application Number
- CN202423065725.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-12
AI Technical Summary
It is difficult to detect the coaxiality of the housing bearing hole efficiently and conveniently during the inspection and maintenance of the main reducer with existing technology, especially when the equipment is fixed on the foundation, and it is difficult to use a dedicated machine tool for detection.
A multi-hole coaxiality detection device for the main reducer housing is designed, which includes a reference shaft, a bearing, a reference disk, a dial indicator bracket and a dial indicator. The coaxiality detection is achieved by measuring the relative rotation of the reference bearing hole and the bearing hole to be detected.
It realizes the rapid and accurate completion of bearing hole coaxiality detection on the reducer site, improves detection efficiency, simplifies the detection process, and meets the national standard accuracy requirements.
Smart Images
Figure CN223412662U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of main reducer detection of extruders, in particular to a multi-hole coaxiality detection device for a main reducer housing, which is suitable for structures requiring multi-hole coaxiality detection in other reducer housings. Background Art
[0002] As the core component of the extruder, the main reducer has the characteristics of high torque, high speed, and narrow center distance between the dual output shafts. It is one of the most difficult components to design and manufacture. In order to meet the requirements of use, the main reducer housing mostly adopts a modular design, resulting in the bearing holes of the same shaft system being distributed on two horizontally assembled housings, which places higher requirements on the detection of the coaxiality of the bearing holes. During the processing and manufacturing process of the main reducer housing, the processing quality is guaranteed by using special CNC machine tools to perform multi-hole coaxiality detection. However, when the housing bearing holes are worn or deformed during the inspection and maintenance of the main reducer, it is difficult to use special machine tools for detection because the equipment is fixed on the foundation. Therefore, it is particularly important to develop an efficient and convenient on-site detection method.
[0003] The utility model proposes a multi-hole coaxiality detection device for the main reducer housing, which can realize the demand of quickly completing the coaxiality detection of the housing bearing holes at the reducer site without moving the main reducer to a special machine tool. The coaxiality detection accuracy can meet the accuracy level requirements of the national standard. Utility Model Content
[0004] The utility model aims to provide a multi-hole coaxiality detection device for a main reducer housing, so as to realize on-site rapid and accurate coaxiality detection of the main reducer.
[0005] The technical solution of the utility model is as follows: a multi-hole coaxiality detection device for a main reducer housing, comprising a reference shaft 1, a bearing 2, a reference disc 3, a micrometer bracket 4 and a micrometer 5; two bearings 2 are installed on the reference shaft 1, one bearing 2 is located at one end of the reference shaft 1, and the other bearing 2 is located on the reference shaft 1; the reference disc 3 is installed on the bearing 2; the reference disc 3 is placed in the reference bearing hole of the reducer housing to ensure that the axis of the multi-hole coaxiality detection device for the main reducer housing is coaxial with the axis of the reference bearing hole; the reference shaft 1 extends to the bearing hole to be detected in the reducer housing; the micrometer 5 is installed on the reference shaft 1 through the micrometer bracket 4; the micrometer 5 is arranged corresponding to the position of the bearing hole to be detected, the axis of the measuring rod of the micrometer 5 is perpendicular to the axis of the bearing hole to be detected, and the micrometer 5 is zeroed; the reference shaft 1 is rotated stably, and rotated 3 to 5 times. The maximum change in the value of the micrometer 5 is twice the coaxiality error value of the bearing hole to be detected relative to the reference bearing hole.
[0006] The beneficial effects of the utility model are as follows: strong on-site applicability, no need to rely on special tools such as large machine tools, and adapting to the needs of on-site inspection and maintenance work; high work efficiency, simplified inspection process, reduced inspection workload, and improved inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the box structure.
[0008] Figure 2 It is a structural diagram of the detection device.
[0009] In the figure: 1-reference shaft, 2-bearing, 3-reference disk, 4-micrometer bracket, 5-micrometer.
[0010] Figure 3 This is a schematic diagram of the coaxiality detection of the box bearing hole. DETAILED DESCRIPTION
[0011] The following examples further explain the specific implementation of the present invention, but are not intended to limit the present invention.
[0012] On-site inspection and maintenance are carried out using the multi-hole coaxiality detection device for the main reducer housing of the utility model. The specific process is as follows:
[0013] 1) The main reducer housing structure is as follows Figure 1 As shown in the figure, by adjusting the height of the adjustment shim under the main reducer, the horizontality of the box can be made consistent with or close to the alignment accuracy at the factory.
[0014] 2) Use the 1 / 2 bearing hole on the housing I as the reference bearing hole to detect the coaxiality of the 3 / 4 bearing hole on the housing II. The coaxiality of the 3 / 4 bearing hole relative to the 1 / 2 bearing hole is required to be ≤0.010mm. Make a detection device based on the bearing hole diameter and axial distance. The nominal diameter of the reference disc matches the nominal diameter of the bearing hole. The tooling structure is as follows: Figure 2 As shown, it consists of a reference shaft 1, a bearing 2, a reference disc 3, a dial indicator bracket 4, and a dial indicator 5, ensuring that the accuracy of each component of the tooling meets the inspection requirements.
[0015] 3) If Figure 3 As shown, the detection device reference disc 3 is placed in the reference bearing hole to ensure that the detection device axis is coaxial with the reference bearing hole axis. At this time, the detection device reference axis 1 extends to the bearing hole to be detected.
[0016] 4) Install the dial indicator bracket 4 and the dial indicator 5 on the fixture reference axis 1 at the position of the bearing hole to be tested, adjust the axis of the dial indicator rod to be perpendicular to the axis of the bearing hole to be tested, and then adjust the dial indicator 5 to zero.
[0017] 5) Stable rotation detection device reference shaft 1, rotate 5 times, observe and record the value change of micrometer 5, the 2 times of the maximum value change of micrometer 5 is the coaxiality error value of the bearing hole to be tested relative to the reference bearing hole.
Claims
1. A multi-hole coaxiality detection device for a main reducer housing, characterized in that: The main reducer housing multi-hole coaxiality detection device comprises a reference shaft (1), a bearing (2), a reference disc (3), a dial indicator bracket (4) and a dial indicator (5); two bearings (2) are installed on the reference shaft (1), one bearing (2) is located at one end of the reference shaft (1), and the other bearing (2) is located on the reference shaft (1); the reference disc (3) is installed on the bearing (2); the reference disc (3) is placed in the reference bearing hole of the reducer housing, ensuring that the main reducer housing multi-hole coaxiality detection device The axis of the reference shaft (1) is coaxial with the axis of the reference bearing hole; the reference shaft (1) extends to the bearing hole to be tested of the reducer housing; a dial indicator (5) is installed on the reference shaft (1) via a dial indicator bracket (4); the dial indicator (5) is arranged corresponding to the position of the bearing hole to be tested, the axis of the measuring rod of the dial indicator (5) is perpendicular to the axis of the bearing hole to be tested, and the dial indicator (5) is zeroed; the reference shaft (1) is rotated stably for 3 to 5 turns, and twice the maximum change in the value of the dial indicator (5) is the coaxiality error value of the bearing hole to be tested relative to the reference bearing hole.