Wide-temperature-range high-precision shafting structure

Abstract

The invention aims at providing a wide-temperature-range high-precision shafting structure so as to solve the problems that when an existing incubator rotary table shafting is in the temperature environment of -55 DEG C-120 DEG C, gaps of all parts of the shafting are reduced due to thermal expansion and cold contraction of metal materials, bearing pre-tightening is too large, the shafting is blocked, and angle measurement is difficult. A wide-temperature-range high-precision shaft comprises a direct-current torque motor assembly (1), an angular contact ball bearing assembly (2), a right shaft(3), a middle ring frame (4), an inner ring frame (5), an angle measuring support (6), a circular inductosyn angle measuring assembly (7), a left shaft (8) and a locking nut (9). The wide-temperature-range high-precision shafting is high in rotation precision and low in manufacturing cost, the phenomenon that the shafting is blocked in high-temperature and low-temperature environments can be effectively avoided, and shafting angle measurement output interference caused by thermal expansion and cold contraction of the shafting in the high-temperature and low-temperature environments can be effectively reduced.

Description

technical field [0001] The invention relates to a high-precision shafting structure in a wide temperature range. It can be applied to the testing and development of aerospace, instrumentation and inertial navigation testing equipment. Background technique [0002] In order to meet the environmental adaptability requirements of the inertial group, most inertial navigation test equipment needs to do high and low temperature tests, and the temperature difference is getting larger and larger. As an important part of the inertial navigation test equipment, the thermostat turntable must also adapt to the high and low temperature environment, that is, it is required that the shaft system can rotate freely under high and low temperature conditions, maintain high rotation accuracy, and at the same time have accurate shaft angle feedback. In the past shafting structure, low temperature "stuck", high temperature "suffocation" and poor environmental adaptability of angle measurement ou...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-precision shafting structure with a wide temperature range, which solves the technical problems of "suffocation" and inaccurate angle measurement in the existing shafting under the environment of super large temperature difference

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