On the basis of solving the contradiction between the precision and the efficiency in rapid prototyping , this paper states self-accommodation cutting layer s value in reducing the step error and improving the manufacture precision and, introduces the fundamental and two typical methods of self-accommodation cutting layer.

The Secondary Separation from Axis Turning Error Based on Three Points Measuring;

Therefore, the measurement of turning error, vibration, dynamic equilibrium and stiffness is the most important aspect in quality control system.

Influence of rotary errors of centrifuge spindle on accelerometer input accuracy;

Taking lathe spindle rotary error as an example due to machine spindle pure radial pulsation and pure axial shifting geometric form error of workpiece cross section and the magnitude of subsequent machining error are analyzed.

The effect of the rotary errors caused by the radial pulsation of lathe spindle on the spares machining precision during the process of turning and boring was studied by means of mathematical formulas.