Establish milling cutter to process high demand product with miniature

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The diameter is very small establish milling cutter (namely miniature establishs milling cutter) the test that had passed industrialization application. But the characteristic that different treatment job is having him to differ again, these different jobs and requirement, the choice of contrary milling cutter offerred a lot of notes. Miniature establishs milling cutter is according to shrink into scale put principle, will common establish what the geometrical parameter of milling cutter narrows and make to establish milling cutter, it can not assure to produce the dependability of the process. Often miniature establishs milling cutter " cut " not " cut " , more or less to cut bits generation. such, the wrong understanding of correlation is concerned between the length that establishs milling cutter to miniature with people and deepness of penetration of a cutting tool. And the understanding that just is this kind of mistake brings about miniature to establish milling cutter to break off mediumly in treatment process. Below this kind of circumstance, people developed the new-style miniature with a kind of more low cost to establish milling cutter (graph 1a) . This characteristic that devises plan depends on miniature establishing milling cutter to arrive from cone between cutting position transferring is an arc form. This kind of hyperbola form transfers arbor avoided cutting tool and workpiece to machine the contact in the process in cutting on one hand, also reduced attrition negative charge thereby. On the other hand, arbor cross section of the circle also is having very good flexibility to be out of shape function, prevent miniature to establish crackle of occurrence stress of ministry of milling cutter arbor. According to this kind of method, each cutting blade that participates in cutting gets same cutting power. The stretch arbor that the abrupt change of cutting condition can establish milling cutter slightness through miniature gets compensate and be balancinged. Basis by cutting material different, cutting position can have first-rate axial penetration, go to the lavatory purify all mental allowance. Graph 1 miniature establishs milling cutter principle to pursue (A) and cutting tool sketch map (a whole that the geometrical parameter that B) geometry parameter contacts miniature to establish milling cutter each other is mutual connection. When a parameter happening of cutting tool changes, when like what establish milling cutter diametical happening changes, the ensue with other corresponding also parameter changes. The correlation between each parameter can use cutting tool simple, the mathematical formula that is protected by patent expresses. This kind of function satisfied the figuration of the appearance of cutting tool geometry that different technique asks, also assured first-rate stability from the point of the angle of mechanical function. Additional, the predicting target of parameter of the cutting when according to this kind of method miniature of possible still implementation establishs milling cutter to machine and politic sex application; And finish distinctive treatment task to use for the user. And these are optimized and the choice is opposite again the estimation of cutting tool durability, and through reducing cutting tool to use up implementation managing cost is helped somewhat. The miniature of this kind of new-style structure establishs the diametical limits of milling cutter to basically be centered in 0.

05~2mm. Limits of effective cutting tool length is in 0.

1~20mm; Relatively long way is in than L/D limits 2~10. Common miniature establishs milling cutter to miniature end panel establishs face of annulus of milling cutter, miniature to establish milling cutter and miniature circular arc to establish milling cutter (graph 1b) . Use today's grinding processing technique, can the production that the finishing miniature of without striking a blowing establishs milling cutter and structure are optimized. A few famous tool manufacturers established milling cutter plan to undertake industrialization applies the test and verify below the condition to the miniature of article introduction, the parameter of cutting tool geometry that came true to produce the job according to industry is optimized, push to the market. This kind of miniature establishs milling cutter industrialization to applied plan to also get very good result in two respects. A respect, with traditional miniature establish milling cutter photograph to compare, new-style the stress of the generation in establishing milling cutter to lay cutting tool in the situation with cutting same power decreases 50% (graph 2) ; Of cutting tool be out of shape decrease 50% . On the other hand, cutting parameter, if cutting speed, feed is mixed,deepness of penetration of a cutting tool had rise apparently. Graph 2 common establish milling cutter with new-style miniature the comparison of stress of course, the mechanical property when this kind of new-style miniature establishs milling cutter to use has certain restriction. For example, use long way to compare L/D ＞ the cutting tool of 10 is right the sophisticated treatment that quenchs tool steel has 3 coordinate way, cannot use miniature simply establish milling cutter to finish, but also not be impossible to finish. For example, can undertake with black lead electrode electric spark is machined, and black lead electrode can use long way to compare L/D ＞ again the miniature of 10 establishs milling cutter to undertake machining, thereby indirect production is made give this kind of intricate work. In the electric spark treatment of use electrode, the occurrence that miniature establishs milling cutter is OK the difficult problem that economic settlement encounters in manufacturing task. Establish the advantage of milling cutter to prove to use miniature, used the tool steel that quenchs hardness achieves 62 HRC technically to undertake machining an experiment. Long-term since, using milling cutter to process the rolled steel of this kind of hardness is impossible thing all the time. And the cutting speed when using new-style miniature to establish milling cutter to process rolled steel of this kind of horniness and every tine feed, machine the steel products with smaller hardness to raise one times than using the miniature before improving to establish milling cutter. When using this kind of new-style milling cutter to undertake outline milling checks, the man-hour that milling machines shortened 85% . And the cutting tool service life that the miniature after optimizing establishs milling cutter rose 30% . All experiment cutting tool did not break off after the experiment that finish. In the meantime, the treatment that still completed tall alloy steel and electrode material experiments. The dimension of outline of the smallest geometry that its machine has hundred millimeter only. Practice obtains the skill with answer extraordinary effect to experiment to carry out examining success finally to announce to end with, the milling that uses the milling miniature that function optimizes to establish milling cutter to finish outline of 3D of workpiece of tall alloy steel (graph 3a) . This kind of technology also agrees with likewise the electrode that processes conventional data. The impeller external diameter that graph 3b place shows is 4mm, width 1.

2mm, blade length 1mm. Uses miniature establishs milling cutter diameter 0.

5mm, its cutting speed is 40m/min, every tine feed is 2 μ M. Graph 3 craft consider to use place of 3c of graph of C of B of impeller of workpiece A, miniature and miniature blender to show be blender of a miniature to shape electrode. Its material is black lead, its are mid 256 edges grow 0.

The dome of circular arc form of 2mm, deepness is 0.

8mm. The miniature of the smallest diameter that uses when treatment establishs milling cutter diameter to have 0 only.

2mm. Main shaft rotate speed is as high as 25000r/min. When overall cutting and deepness of penetration of a cutting tool are 20 μ M, cutting speed is 1000mm/min, the treatment of whole electrode costs 45min. CNC Milling CNC Machining