Hollow axle inner hole coaxiality detection device

A hollow axle and detection device technology, applied in the direction of measuring devices, mechanical measuring devices, mechanical devices, etc., can solve the problems of difficult measurement, difficult observation, and inconvenient measurement, so as to improve the processing technology level, shorten the detection period, Measuring the effect of convenience and quickness

Active Publication Date: 2017-10-27
CRRC QINGDAO SIFANG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, because a sealing cover needs to be installed on the front end of the hollow axle, the probe of the dial indicator needs to be inserted into the inner hole more than 70mm away from the end face of the axle for measurement. Observation, difficult to measure

Method used

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  • Hollow axle inner hole coaxiality detection device

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0022] Such as figure 1 As shown, a hollow axle inner hole coaxiality detection device includes a measuring instrument, a slewing mechanism and a self-centering component. Among them, the commonly used dial indicator 1 is selected for the measuring instrument, and the self-centering component is inserted into the inner hole of the axle 5 and fixed. The slewing mechanism is composed of a lever mechanism 2 and a bracket 3. One end of the lever mechanism 2 is fixed on the bracket 3. The other end of the lever mechanism 2 is fixedly installed with a dial indicator 1, and the bracket 3 is rotatably connected with the self-centering assembly. The probe 4 of the dial indicator 1 rests on the outer circumferential surface of the axle 5. After installation, the slewing mechanism, self-centering The assembly is coaxial with the inner hole of the axle, an...

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Abstract

The invention relates to a hollow axle inner-hole coaxiality detection device comprising a measuring instrument, a slewing mechanism, and a self-centering assembly extending into the inner hole of an axle and fixed. The measuring instrument is fixed to the slewing mechanism. The slewing mechanism and the self-centering assembly are connected rotationally. The measuring instrument is driven by the slewing mechanism to rotate along the outer circumference of the axle. The hollow axle inner-hole coaxiality detection device has a simple and compact structure, is easy to carry for operators, facilitates quality control and mass production size detection on a production site, and is highly versatile and low in cost. There is no need to extend a dial indicator into the inner hole of the axle during measurement. The difficulty in measurement is reduced. Operators can observe detection conveniently. Measurement is very convenient and quick, and the detection cycle is shortened greatly.

Description

technical field [0001] The invention relates to a process device used in the manufacture of rail vehicle bogies, in particular to a device for coaxiality detection of hollow axles of rail vehicles such as EMUs and subways, and belongs to the technical field of rail vehicle axle manufacturing. Background technique [0002] When processing hollow axles of rail vehicles such as subways, after the center hole positioning datum is detected by the probe, the center hole positioning datum is milled once by circular interpolation to ensure the coaxiality requirements of the inner hole and the outer circle. In the process of machining hollow axles, it is necessary to measure the coaxiality of the inner hole and the outer circle for different types of hollow axles to ensure the machining quality of the axle. The traditional measurement method is to fix the clamping tool on the outer circle, then insert the dial indicator into the inner hole of the axle, rotate the dial indicator and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/252
Inventor 徐锋朱崇飞张峰王心红王银灵邵松涛梁晓燕董翠艳赵文华唐国梅
Owner CRRC QINGDAO SIFANG CO LTD
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