The P/M gear wheel with special shape is an important structure part in transmission mechanism.

Experimental study on effect of thermal deformation parameters on forming process of microgears;

Defect detection for microgear based on image processing and support vector machine;

Based on the discussion on technique difficulty in traditional measurement method of contact for microgear, a new non-contact measurement method of microgear based on CCD imaging is put forward.

Experimental study of micro-gear extrusion with semi-solid ZL101 alloy was introduced.

Aimed at studying the structure of micro-gear, on the basis of simulating analysis with MoldFlow, the injection moulding of micro-gear is experimented and studied.

The precision isothermal forming technology of aluminum alloy micro-gears is studied with a special micro-plastic forming apparatus.

Screw thread forming is the critical procedure, the parting mold mechanism and demoulding mode of mold are introduced, by gear mold core, using gear transmission to drive the running of gear mold core so as to realize parting mold, demoulding is performed by crew thread transmission.

Characteristics of large gears and o n -line measurement;

The method of on-machine measuring large gear with the rack-head is put forward.

Based on the theory of the rolling friction transmission, the principle and techniques of obtaining an accurate angle between friction discs in on-machine measuring large gears are studied.