Cutter radius compensation is the key technology in CNC system and is the data sources and basis of contour interpolation. It is the necessary premise to guarantee the part contour according to programming track and cutter radius to plan the tool center path, especially the coordinates of the joint points. The concept of orientation vector is introduced and a technology of 3D cutter radius compensation based on vector method is put forward. The theory and method of cutter radius compensation in coordinates linear processing is studied deeply. The corresponding algorithm of tool center path for programming contour is established according to the relation between the geometric elements. Simulation results proved that the algorithm is accurate and feasible.

The production cost of amorphous alloys by vacuum induction melting (VIM) was very high. In order to reduce the cost, in this paper, alloys were prepared in alkaline crucible protected with different slags by Air induction melting (AIM). The comparison was found out between VTM and ATM in the research by using optical microscope (OM), scanning electron microscope (SEM), EDS, etc. Experimental results showed that Fe-Si-B alloys can be prepared by AIM with economic and technical feasibility.

In this paper, the concept, development status and trend of NC machining simulation technology were reviewed and its four key technologies were emphatically introduced, which were geometric modeling technology, NC code translation, entity collision detection and the material removal process simulation respectively.

This paper studied the axial tensile properties of the multidirectional filament wound tubes (MFWT) both theoretically and experimentally. Based on the Classical Laminate Theory, the mechanical analysis model of the tubes was established and implemented by the program of Matlab language, from which the axial tensile strength was predicted. Then the specimens with different parameters were fabricated and tested under axial tensile load respectively. The theoretical model met the experimental results well. Furthermore, the test results, the stress-strain curve and the failure form were analyzed, which showed that the axial properties of the MFWT were obviously strengthened with the incorporation of the axial reinforcement.

Technology experiments of laser texturing were studied on the sample of 45 steel by the way of single factor, and the influence rules of both laser voltage and pulse duration on the geometrical dimensions after laser texturing microtopography were obtained. The microstructure and microhardness of laser texturing micro-topography were analyzed and measured, and compared with the microstructure and microhardness of matrix. The results showed that the surface microhardness of laser texturing had been increased by about 50 percent.