外文资料--General Design Introduction
3页1、Geneal Design IntroductionGeneral Design IntroductionThe last 20 years. With the rapid development of Chinas manufacturing industry. Various processing equipment was widely used in the processing industry. Therefore, the equipment manufacturing industry has been an unprecedented development. With Chinas economic restructuring and upgrading manufacturing technology, the original tradition, a single general equipment Sijing can not meet the needs of the market. Thus, the NC-based semi-automatic an
2、d automatic access to a large number of Chinas advanced equipment market.In the 1980s and early scores. Chinas machine tool manufacturers began developing many trial production with its own brand of CNC milling and processing centre, and with this supporting feature also emerged(Such as the spindle, rails, ball screw, bearings, etc). At this time, the development of CNC machine tools has a related conditions. Various manufacturers have also launched its own branded products, and their respective
3、 characteristics and a price advantage, and imports of machine tools in the competition seek survival. After more than 10 years of development, Chinas CNC milling and processing centres have made great progress, whether it is performance, accuracy, or the types and packaging, have reached a considerable level of general machine tools have been accepted by users .The CNC machine tools, in particular, to do high-speed processing of NC machine tools, the overall structure of the machine should take
4、 full account of the processing machine object, processing characteristics and application of the machine itself to a reasonable structure. High-speed processing machine parts should be structured to meet the rigid, light weight, the dynamic characteristics of good requirements, as machine tools targeted at high-speed processing, so the NC machine tool axis and the various moving parts will be frequently changed the direction of movement. This will have a significant impact arising from inertial
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