A high-speed and high precision cutting test to cut the mould steel NAK80 with cemented carbide millers is carried out, and the influences of cutting conditions and cutting parameters on the roughness of workpiece surface are studied.
On the theory of precision cutting and tribology,this paper studies the grinding mechanism of magnetic abrasive grains(MAGS) which was developed to realize magnetic abrasive finishing,expounds its characteristics,and also summarizes questions required to solve for making of MAGS.
Based on self-developed precision machine tool,the precision cutting technology of complex shape microparts made of metal material is studied by analyzing the modeling method on complex shape,the means of toolpaths layout and the optimal selection for cutting parameters. On the basis of above work,a typical duralumin specimen of high precision,low surface roughness and complex shape microparts is manufactured.
The research covers design of bellows, precision plasticity machining of especially thin thickness pipe, brightness heat treatment, precision welding, precision cutting and testing etc. various technology and technique.
The principle,function,configuration and structure characteristics of mechanical lever press have been introduced with application in multi-station forging,precision cutting and rail prestressing cutting.
A new precision cutting machine Model4kJ for bar has been designed on theory of precision cutting,of which structure concerned problems have been analysed and discussed to promote development of new technology and new technique and new equipment of precision operation of bar.