Error compensation in NC machine tools

A Multisensor Approach for Error Compensation in CNC Machine Tools

This paper presents a comprehensive ANN based multisensor fusion approach designed to support the implementation of an adaptive error compensation of geometric, thermal and dynamic errors for enhancing the accuracy of CNC machine tools. Accurate and efficient model to perform on-line error prediction is an essential part of the compensation process. The proposed approach consists of the followi...

Real Time Compensation of Machining Errors for Machine Tools NC based on Systematic Dispersion

Manufacturing tolerancing is intended to determine the intermediate geometrical and dimensional states of the part during its manufacturing process. These manufacturing dimensions also serve to satisfy not only the functional requirements given in the definition drawing, but also the manufacturing constraints, for example geometrical defects of the machine, vibration and the wear of the cutting...

Study on Temperature Measurement Point Optimization and Thermal Error Modeling of NC Machine Tools

A servo parameter tuning method for high- speed NC machine tools based on contouring error measurement

In the latest hgh-speed and hgh-acceleration NC machine tools, the structural vibration is one of the most critical factors to deteriorate the machine's contouring performance. Particularly on such a machine, the parameters in a CNC servo control system must be carehlly tuned, since too high response of the latest CNC units often causes severe structural vibration. Ths paper presents a practica...

The application of ANFIS prediction models for thermal error compensation on CNC machine tools

Thermal errors can have significant effects on CNC machine tool accuracy. The errors come from thermal deformations of the machine elements caused by heat sources within the machine structure or from ambient temperature change. The effect of temperature can be reduced by error avoidance or numerical compensation. The performance of a thermal error compensation system essentially depends upon th...