Machine tool electrical spindle reliability testing stand centering adjusting device

Abstract

The invention aims to solve technical problems so as to eliminate harmful influences that misalignment generates additional force, torque, vibration and the like on a to-be-tested electrical spindle in the machine tool electrical spindle reliability testing, and provides a machine tool electrical spindle reliability testing stand centering adjusting device. The machine tool electrical spindle reliability testing stand centering adjusting device comprises horizon iron, a control cabinet and a dynamometer which is used for loading simulated cutting torque on a to-be-tested electrical spindle. An input shaft of the dynamometer is in coaxial key joint with the to-be-tested electrical spindle through an elastic membrane shaft coupling. The machine tool electrical spindle reliability testing stand centering adjusting device is characterized by also comprising a rotating table, an X-Z working table, a lifting platform and a pitching working table. The machine tool electrical spindle reliability testing stand centering adjusting device can timely adjust five degree of freedom of any type of misalignment, eliminates harmful influences caused by misalignment between the to-be-tested electrical spindle and the input shaft of the dynamometer, is suitable for different types of machine tool electrical spindles and mechanical spindles and other equipment with high misalignment error requirements, and has high versatility and flexibility.

Description

Technical field [0001] The invention belongs to the field of mechanical test equipment, and relates to a device for adjusting the alignment between a dynamometer and a measured electric spindle in a reliability test of a high-speed electric spindle of a machine tool. Background technique [0002] Rotor failure in rotating machinery is an important issue related to the production safety of the national economy. Misalignment failures account for more than 60% of rotor system failures. Most rotating machinery is composed of a driving machine and a driven machine. The torque is transmitted through various couplings. The coupling is caused by factors such as coupling processing and installation errors, rotor deformation, bearing misalignment, and frame height deviation. There are three types of misalignment in the device: parallel misalignment, angular misalignment, and parallel angular misalignment. The movement of the rotor in the misaligned state can cause mechanical vibration, be...

AI Technical Summary

Problems solved by technology

For machine tool high-speed motorized spindle reliability test bench, since the motorized spindle under test rotates at tens of thousands of revolutions per minute, the dynamometer that provides simulated cutting torque for the motorized spindle under test is connected to the motorized spindle under test through a coupling , the misalignment between the dynamometer and the electric spindle under test will not only increase the vibration of the electric spindle under test and the dynamometer, reduce the bearing life and make it difficult to increase the speed, but more importantly, when the electric spindle under test and the dynamometer are out of alignment In the middle, the coupling will generate an additional unpredictable force and moment on the electric spindle under test, so that the loaded force and moment deviate from the set value, causing errors in the reliability test

At present, there are some alignment adjustment devices in China, which can only perform simple adjustments before the test, and cannot detect misalignment during operation and eliminate misalignment in time during operation.

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