The effect of process system stiffness on machining accuracy (machine tool deformation, workpiece deformation)?
1. The workpiece shape error caused by the position change of the cutting force action point.
2. Machining errors caused by changes in cutting force.
3. Machining errors caused by clamping force and gravity.
4. The influence of transmission force and inertia force on machining accuracy.
What are the guide errors and spindle rotation errors of machine tool guide rails?
1. The guide rail mainly includes the relative displacement error between the tool and the workpiece in the error-sensitive direction caused by the guide rail.
2 Spindle radial circular runout Axial circular runout tilt angle swing.
What is the phenomenon of "error re-mapping"? What is the error remap coefficient? What are the measures to reduce error re-mapping?
{Due to the change of the error and deformation of the process system, the gross return error is partly reflected on the workpiece. Measures: increase the number of passes, increase the rigidity of the process system, reduce the feed rate, and improve the gross return accuracy}