The pallet of the machine tool is carried on the guide rail, so the straightness of the guide rail determines the straightness of the movement. There are two reasons for the loss of straightness, one is the flatness of the guide rail itself, and the other is the flatness of the guide rail installation reference surface. High-precision and stable guide rails, the combination of the pallet and the bed are the fundamental conditions to ensure straightness. The purpose of the high and low temperature and aging treatment of the guide rail, pallet and bed is also here.

Numerical control wire EDM processing includes fast wire processing, middle wire processing and slow wire processing, which are widely used in the mold manufacturing industry. What is the current development status of the processing efficiency, cutting accuracy and surface quality of these three technologies?