Electric main shaft reliability loading testbed for load comprehensive decoupling

Abstract

The invention belongs to the technical field of the test of mechanical test equipment, and relates to an electric main shaft reliability loading testbed for load comprehensive decoupling. The testbedcomprises an electric main shaft clamping module, a radial force amplitude loading module, a radial force mean loading module, a cutting torque loading module, an axial force loading module and a loading unit module; the electric main shaft clamping module, the radial force amplitude loading module, the radial force mean loading module and the cutting torque loading module are fixed on horizontaliron; one end of a simulated handle in the loading unit module is connected with a bellows coupling in the cutting torque loading module, and the other end is matched with a main shaft conical surfacethrough a simulated real handle conical surface; the axial force loading module are connected with two sides of a front end of a dynamometer base in the cutting torque loading module through bracketsat two ends. The loaded state under a main shaft real working status is simulated by adopting the collaborative loading of an electrodynamics vibration generator and an electric cylinder, the load comprehensive decoupling is realized by adopting the flexible loading structure, and the loading accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical testing equipment testing, and in particular relates to an electric spindle reliability loading test bench with fully decoupled loads. Background technique [0002] As an industrial master machine, CNC machine tools are not only an important cornerstone of the development of machinery manufacturing industry, but also an important indicator to measure a country's industrialization. As one of the key functional components of CNC machine tools, the reliability level of electric spindle directly determines the reliability level of the whole machine. However, compared with foreign products, there is still a big gap in the reliability level of the electric spindle products designed and produced in our country. Performance matters. [0003] Due to the long field reliability test cycle, low efficiency, uncontrollable test conditions, and with the rapid development of equipment manufacturing and the s...

AI Technical Summary

Problems solved by technology

[0004] The present invention designs a fully decoupled electric spindle reliability loading test bench to solve the problem that the current electric spindle test device cannot accurately simulate the axial and radial cutting force and cutting torque suffered by the electric spindle during actual operation

At the same time, optimize and improve the problems of low loading frequency of existing loading devices, difficulty in decoupling mixed loads, and high cost

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