APPARATUS AND METHOD FOR TESTING ACCELERATED LIFE OF HIGH-SPEED ELECTROSPINDLE

摘要

An apparatus for testing accelerated life of a high-speed electrospindle (5), comprising a test bench (1), an electrospindle load applying device (2), and a data acquisition system. The electrospindle load applying device (2) comprises a load applying shaft (21) and a load force applying mechanism (22). The data acquisition system comprises a computer, a sensor acquisition card, a test bench acceleration sensor (31) mounted on the test bench (1), and a temperature sensor (32) and a spindle acceleration sensor (33) respectively mounted on the electrospinkdle (5). The test bench acceleration sensor (31), the temperature sensor (32), and the spindle acceleration sensor (33) are respectively connected to the computer by means of the sensor acquisition card. By simulating, by the load force applying mechanism (22), a load borne by the electrospinle (5) during a machining process, a test for the reliability of the electrospindle (5) can be quickly implemented. The data acquisition system monitors data in an accelerated life process of the electrospindle (5) to implement the acquisition and analysis of the temperature, load force, and vibration acceleration of the electrospindle (5), thereby finding out a potential fault of the electrospindle (5) and facilitating targeted improvement for the electrospindle (5).