Introduced the structure characteristics and technological requirements of bend sidebar of chain,and through analyzing new&old technology,to use a new technology of automatically continuous punching&extruding of continuous feed,wedged structure,punching-hole and extruding-hole,reaching the requirements of dimensional accuracy and finish of the four-hole processing of bend sidebar.

Usually, afterprocessing is necessary for the lightweight composite components before assembling, such as drilling, cutting, slotting, etc.

Drilling process of the ceramic composite component(ceramics/FRP/aluminum alloy),as an example of ceramics/FRP laminate composite component,was studied intensively.

Experimental Investigation on Drilling Kevlar Fiber Reinforced Composite with Sintered Diamond Bits;

In view of some of the difficult points for machining the hanging pup joints used in directional wells, a special technology for deep-hole machining is developed.

To rebuild normal turner into machine tool of deep-hole machining based on programmable logic controller (PLC) and AC frequency control technology, electrical control system of high performance machine tool was designed, which could realize self-turning.

Study on laser microdrilling nearby the last threshold;