The development trend of machine tool of domestic numerical control
Classics " 6 · 5 " , " 7 · 5 " , " 8 · 5 " , " 9 · 5 " , " 10 · 5 " successive effort of 25 years, the development level of machine tool of our country numerical control had very great progress. The breed of numerical control machine tool and quality all rise somewhat than going to. Production dominant factory still develops partial machine tool to have quite numerical control equipment of the level. Grow as the abidance of national economy, each trade is larger and larger to the demand of the machine tool of core numerical control of fundamental facilities. Taller and taller also to the requirement of machine tool class. In last few years, of year of crop of machine tool of domestic numerical control and import volume increase by degrees rate maintain from beginning to end in 30 ％ above. According to not complete count, domestic amount machine tool produced per year a quantity to be 35 thousand 2003, achieve two years ahead of schedule " 10 · 5 " program goal. Forecast according to expert of association of industry of tool of Chinese machine tool, machine tool of domestic numerical control produced per year a quantity to will amount to 45 thousand 2004. What develop as a result of the technology is lopsided, restrict in a variety of conditions below, at present advanced level photograph compares the whole technology level of machine tool of our country numerical control and international to still have certain space. The numerical control machine tool of high-powered, high speed, high accuracy still needs the part rely on abroad entrance. 2003 our country from abroad entrance machine tool of 20 thousand numerical control. Predict to was returned 2004 reimport 30 thousand. This kind of impetus estimates in recent years inside temporary hard circumgyrate.
Unit of main shaft of outfit form report is in inside the action in numerical control machine tool.
Unit of form report main shaft is installed to combine electric machinery and high accuracy main shaft together inside, make main shaft unit stepped delectable one pace to treatment of high speed, efficient, high accuracy. Unit of main shaft of outfit form report is the core function component of numerical control machine tool inside. It makes the machine tool cast off mechanical drive manacle, simplified machine tool structure, eliminated the oscillatory noise that produces by mechanical drive at the same time.
Machine tool of numerical control of high-powered, high speed, high accuracy is common on international use unit of electric main shaft. In much work polyhedron of linkage of compound treatment machine tool, much axis machines machine tool, paralell connection machine tool and flexible in processing unit, electric main shaft has the advantage that mechanical main shaft cannot replace more.
From " 9 · 5 " begin, the country uses two Five-Year Plan, increase strength to support domestic proper motion to develop numerical control machine tool to use practical model electric main shaft is unit. Try hard via 6 years, our country already developed top rotate speed to be independently now 8000, 12000, 15000, 18000, 24000, 30000r/min, the biggest torque uses electric main shaft for the numerical control machine tool of 129Nm. Machine tool of first-run numerical control ties row music score with electric main shaft preliminary already finish. Product of partial report main shaft already gave priority to engine plant institute to approbate.
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