now widely used for measuring rheological data of the mud in geologic core drilling, there exist some errors in yield value obtained with a rotary viscosimetor.

Features of vibration machining technology and research for its application;

Features of vibration machining technology and its application status;

The main procedure of the vibration machining is reviewed briefly The researehes and achievements in the establishing of mathematic models, testing and practical systems and the essence or mechanisms of the vibration machining are introduced.

Invention of vibratory cutting and its process characters;

In order to study deeply factors of cutting surface effection in vibratory cutting,the experiment system of the vibration cutting with low frequency is tried and established.

It is also revealed that the cutting crack in the vibratory cutting is more liable to generate than that in the conventional cutting process,le.

Application of PLC in automatic cutting control system of plastic pipe;

It measured the strain cost on stress point bound by both strain electrical logging theory and technology when the automatic cutting machine was on the working condition of incising the PCB,and supplied the base for praepostor produce.

Innovation ofJ7/ACautomatic transfer control system for winding head;

The circular edge must be cut before rolling the exit of cylinder-shaped container, the technology of remolding old lathe into automatic cutting machine is introduced.