模具制造加工英文文献和中文翻译(2)
2) quick-cutting diminutions cut a force;
3) quick-cutting heat major part generate heat from the cuttings entrainment, workpiece being short;
4) quick-cutting cut down vibration, improve treating mass;
2.2 high speed treating apply to the beneficial result that the mould processes
1) fleetness rough process and half finish machining, improve treating efficiency;
2) high speed high-accuracy finish machining replace only entire the height processing , indicating mass , form accuracy rise , 50%, cuts down repair a mill by hand than EDM processes a potentiation;
3) cuts the surface processing final molding stiffly , improve surface mass , form accuracy, the treating (not only being that surface harshness is low, and the surface radiance is high) , being used for complicated surface has more advantage;
4) the surface loss that EDM treating produces , improve mould life-span 20%;
5) processes an electrode rapidly combining with the CAD/CAM technology , especially, the form is complicated , thin-wall is similar to an electrode.
3 adopt quick-cutting to process a mould needing the problem solving
In in the homeland, since the aspect cause such as fund, technology , the quick-cutting applying produce a mould be in the initial stage stage. Return the machine tool , cutter , handicraft back to existence as well as some problem of aspect needs to proceed orderly other solve.
The shortcoming is that finished cost is high, correct cutter sigmatism have comparatively high demand, can not have used big cutters , need to have the complicated computer programming technology to be used for support , equipment running cost height.
Two, the high speed processing a mould's processes a machine tool
Mould finish machining and hard cutting treating require that the numerical control high-speed machine tool , form board , model put up the precision processing need , high-effect numerical control machine tool etc.The mould aiming at produces a lot of machine tool enterprise , some treating centres 60% all above of the machine tool producing a factory sells enterprise to a mould.
The fixed assets having 5 billion yuan without exception in the upcoming several years throws into mould industry, 80% is the machine tool buying a mould process equipment , just saying every year having 4 billion yuan of RMB to buy Jinqie among them.
At present average our country numerical control machine tool utilization ratio approximately 20%, the high-speed machine tool utilization ratio 3 ~ 5%. Also, mould enterprise has the unit suitable to buy a high-speed machine tool, complies with 6000 ~ 40000 rmp's to have.
1 high-speed machine tool technology parameter demands
Process centre chief axis high-power, high rotation rate , satisfied rude finish machining; The finish machining mould wants to need to reach 15000 ~ 20000 rmp like the cutter , the machine tool with minor diameter. Generally, the chief axis rotation rate machine tool under 10000 rpm can carry out rough process and half finish machining , cannot reach the finish machining accuracy;
Have no way to reach 400 the above m/min cutting speed.
2 five scrolls of machine tools application increases a trend
1) treating route is nimble , the surface form is complicated;
2) treating range is big , the various type mould suitable processes;
3) cuts life-span of condition easy to cut down cutter wear , to raise a cutter,;
3 the softwares buying CAD/CAM and high-speed machine tools assort
On the grounds of the machine tool, major part counting , having several billions U. S. dollar to be used to enter port every year, the electromachining machine tool and the high-speed machine tool need to import.
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