To get the stability of shallow structure foundation and adjacent seabed in Cheng Dao shallow sea area, we have made an investigation on high resolution echo depth side sonar and shallow strata section etc.

The foundation is laid for analyzing the influence of seabed to dynamic loads on free span.

The Research on the the Test System for Punch of CNC;

The author conducts a complete and detailed theoretical analysis on the causes of raised grain defect during the fabrication of lattice mesh plate in the numerical control small punch spinning drying equipment in the article.

A new type of visualized NC programming system for punching machines in which the PM and the SM are closely integrated is developed.

For CNC system of full automatic NC punching machine, electromagnetic noises are analysed in detail and several measures of anti-disturbance is proposed, including power supply de signing,electronic line designing,grounding,shielding ,isolating,filering, etc.

This newly designed punch machine can automatically separate the inner and outer ferrules form 608 to 6202 bearing series, and can process 20 to 30 sets per minute at least.

This paper presents an improved numerical control feed system based on a traditional punch machine and the detailed explanation for such hardware system as structure,control and feed bench.

Classification model of man-hand and billet based on BP algorithm in safety protector for puncher;