Papers by Author: Lai Xi Zhang

Abstract: The backlash compensation has a great effect on the synthetical precision of CNC machine tool. Here, the measuring and backlash compensating technologies were investigated for high-speed CNC machine tool. Following, the backlash compensation of the synthetical geometric error of the interpolatimg movement and the evaluation system of position accuracy were proposed during CNC machine tool processing. The results indicate that the basic feature of error is established and provides a basis for putting forward the new error measurement method under the essential measuring condition. It also could be applied for different types of error compensation, shows that the backlash of the milling processing could be well compensated.

Abstract: In this paper, the variable speed grinding experiments at high speed have been studied systematically, and the method of improving the surface quality of high-speed grinding has been discussed on the basis of analysis of the chatter and the stability of the high-speed grinder. Through the variable speed grinding experiments at high speed, the vibration characteristics were measured by the vibration energy, and the power spectrum were analyzed by the maximum entropy spectral estimation of the vibration signals in time series. The results confirm that the chatter of high-speed grinding can be suppressed by the variable speed grinding to a certain extent.

Abstract: Technical reform of the used equipment in engineering, not only economizes the purchasing funds of the equipment, but also exploits the potential of the current equipment, at the same time, improves the level of automation of facilities and production quality. In this paper, the mathematics model and the system responding analysis on the mechanism are provided based on the dynamic analysis of mechanism. The design scheme of drilling machine workbench system has been optimized by improving the design and adopting appropriate compensations to system errors.