Quality testing device for motorized spindle rotor

Abstract

A quality testing device for a motorized spindle rotor comprises an actuating motor. An output shaft of the actuating motor is connected with a shaft of a rotor to be tested through a transmission mechanism, the rotor to be tested is fixed on a chuck, a permanent magnet probe is arranged near the surface of the rotor to be tested, the centre of the permanent magnet probe and the centre of gyration of the rotor to be tested are located on the same plane, the permanent magnet probe is composed of a permanent magnet and a varnished coil wound on the permanent magnet, the two ends of the varnished coil are connected with data acquisition equipment and obtain signals. Based on the fact that the permanent magnet disturbance is nondestructive to the testing, the quality testing device for the motorized spindle rotor has the advantages of being speedy, efficient, easy to operate, stable and reliable in testing result and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of detection of high-speed numerical control machine tools, and in particular relates to a quality detection device of an electric spindle rotor. Background technique [0002] With the continuous application of high-speed CNC machine tools (CNC) in industry, the performance of high-speed spindle directly determines the working performance of high-speed CNC machine tools. The high-speed electric spindle unit of CNC machine tools affects the precision, stability and application range of the machining system, and its dynamic performance and stability play a key role in high-speed machining. As the main rotating part of the electric spindle unit, the quality of the rotor directly affects the performance of the electric spindle. In the processing and production process of the electric spindle, the manufacturing process of the stator is relatively mature and the quality is relatively stable. Due to factors such ...

AI Technical Summary

Problems solved by technology

Another example is that manufacturers of electric spindles often use magnetic powder detection devices, which use the method of increasing the current at both ends of the rotor to form a strong magnetic field, and diagnose rotor faults by observing the adsorption distribution of magnetic powder. This method is inefficient and mostly manual. can be done, and can only detect near-surface faults

There are also methods such as acoustic emission, ultrasonic, and ray detection, etc., which cannot quickly and comprehensively detect rotor faults.

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