Numerical control grinder load spectrum data transfer sampling rate device and numerical control grinder load spectrum data transfer sampling rate method

Abstract

The invention provides a numerical control grinder load spectrum data transfer sampling rate device and a numerical control grinder load spectrum data transfer sampling rate method to meet requirements of establishing a numerical control grinder load spectrum. Four non-contact revolution speed transducers are arranged on end portions of a main shaft, a grinding wheel shaft, an X-shaft lead screw and a Z-shaft lead screw. Four current transmitters respectively penetrate through power lines of a main shaft servo driver, a grinding wheel shaft frequency converter, an X-shaft servo driver and a Z-shaft servo driver. The revolution speed transducers and the current transmitters send signals to a signal collecting and processing plate. The signal collecting and processing plate firstly conducts time sharing sampling on signals of various paths, then converts sampled analog signals into digital signals and sends the digital signals to a central processing unit (CPU) for processing, processed data are transmitted to a host computer through an RS 232 serial port. A computer stores load spectrum data and conducts post processing. The numerical control grinder load spectrum data transfer sampling rate device and the numerical control grinder load spectrum data transfer sampling rate method have the advantages that on the premise of not influencing normal operation of a numerical control grinder, the numerical control grinder load spectrum data can be collected and recorded conveniently and rapidly, and basis is provided for reliable design of the numerical control grinder.

Description

technical field [0001] The invention relates to a device and method for acquiring load spectrum data of a numerically controlled grinder with a variable sampling rate, and belongs to the field of advanced manufacturing technology and automation. Background technique [0002] CNC grinding machines are widely used in machinery manufacturing enterprises, and the reliability of CNC grinding machines is very important to the normal production of enterprises. In order to improve the reliability of the CNC grinding machine, the reliability design of the CNC grinding machine must be carried out, and the load spectrum of the CNC grinding machine is the basic data of the reliability design. The load spectrum of the CNC grinding machine mainly includes the rotational speed and torque values ​​of each rotating shaft of the CNC grinding machine. [0003] At present, compared with foreign advanced CNC grinding machines, the reliability of domestic CNC grinding machines is generally low, ...

AI Technical Summary

Problems solved by technology

[0004] The traditional data acquisition system is to install the sensor on the body under test, which affects the normal operation of the machine under test, and usually the sampling frequency of the traditional data acquisition device is fixed

Since the collection of the load spectrum data of the CNC machine tool cannot affect the normal operation of the CNC grinding machine, and it is collected continuously, the amount of data that the CPU needs to process is very large, which brings difficulties to the storage

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