Machine tool spindle reliability test bed based on mixed loading of electro-hydraulic servo and dynamometer

Abstract

The invention relates to a test device of a machine tool spindle, in particular to a machine tool spindle reliability test bed based on mixed loading of electro-hydraulic servo and a dynamometer, and aims to solve the problem that the conventional machine tool spindle reliability test device cannot truly simulate dynamic cutting force loading, static cutting force loading and cutting torque loading. The machine tool spindle reliability test bed mainly comprises a machine tool spindle supporting part, a torque loading part and a cutting force loading part, wherein the machine tool spindle supporting part is formed by combining a spindle box base plate (14) and an iron gasket (15); the torque loading part consists of a loading rod (12), an elastic diaphragm coupler (9) and the dynamometer (8), which are coaxially assembled; and the cutting force loading part employs two loading modes, namely a cutting resultant force loading mode and a cutting axial force and radial force separated loading mode. By performing reliability test for simulating true working conditions on the tested machine tool spindle, the failure of a product is stimulated and exposed, and practical basic data are provided for reliability growth and evaluation of the product.

Description

technical field [0001] The present invention relates to a test device for machine tool spindles, more precisely, the present invention relates to a machine tool spindle reliability test system that realizes mixed dynamic loading of dynamic and static cutting force and cutting torque on the machine tool spindle through electro-hydraulic servo and dynamometer Test Bench. Background technique [0002] CNC machine tools are an important cornerstone of industrial modernization, and their quality, performance and ownership have become an important symbol to measure a country's industrialization level and comprehensive national strength. Although CNC machine tools have been developed for nearly half a century, their reliability has always been a key issue that people pay attention to and make unremitting efforts to solve. Reliability is an important issue that restricts the rapid and efficient development of CNC machine tools, and improving reliability is the key to improving the ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current machine tool spindle reliability test device cannot truly simulate dynamic and static cutting force and cutting torque loading. The present invention provides a machine tool spindle reliability test with mixed loading of electro-hydraulic servo and dynamometer The platform realizes mixed dynamic loading of dynamic and static cutting force and cutting torque on the spindle of the machine tool. The dynamometer provided by the invention includes various types of dynamometers such as electric dynamometers and eddy current dynamometers.

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