Accuracy of ultraprecision machine tools.

Comprehensive Evaluation of CNC Machine Tools Accuracy Based on AHP

In order to evaluate the accuracy of a numerical control machine tool comprehensively, the accuracy evaluation index system of a numerical control machine tool was established, and the priorities of accuracy indexes were determined by analytic hierarchy process method. Taking a five-axis numerical control machine tool for example, each accuracy index of it was studied by using fuzzy comprehensi...

Control of Machine Tools

This paper reviews the progress in machine tool control during the last three decades. Three types of controls are discussed: (i) Servocontrol loops that control the individual axes of the machine, (ii) interpolators that coordinate the motion of several axes, and (Hi) adaptive control that adjusts the cutting variables in real time to maximize system performance. We cover a selection of the mo...

Development of a Simple laser-based 2D Compensating System for the Contouring Accuracy of Machine Tools

The dynamical contouring error is a critical element for the accuracy of machine tools. The contouring error is defined as the difference between the processing actual path and commanded path, which is implemented by following the command curves from feeding driving system in machine tools. The contouring error is resulted from various factors, such as the external loads, friction, inertia mome...

A Holistic Approach to Quantifying and Controlling the Accuracy, Performance and Availability of Machine Tools

With today’s ever increasing demand for improved accuracy and faster material removal rates, CNC machine tool manufacturers and users are under pressure to supply and maintain machinery with a high degree of accuracy and performance. Although some machine tool users have their machines “checked”, there is no formal method of establishing the capability of a machine tool as an overall measure of...

Indirect Measurement of Volumetric Accuracy for Three-Axis and Five-Axis Machine Tools: A Review