Vario milling cutter and new technology of the efficient treatment that break off bits

, PDT)(is located in Nuo of American Yi benefit to depend on city Lincolnshire) it is one is engaged in including cutting tool design and the transnational corporation that the new product that makes inside develops. This company devotes oneself to to be able to shorten all the time the treatment cycle, exploration that reduces the advanced treatment strategy that produces cost and research. PDT company rises from hold water, begin the machine that uses coating of TiAlN of exterior besmear Fu to place type milling cutter namely (the bit that use APKT square takes step structure) the research of innovation sex technology that undertakes below tall feed condition the mould is machined. Since August 2004, with company of LMT-Fette United States (be located in American Ohio to capture Li Fulan city) joint development a kind of brand gives machine clip type milling cutter for the Gao Jin of Twincut Vario (use) of new-style LC280TT razor blade, undertook the experiment studies applied its at the craft that efficient mould machines. Graph base of mould of milling cutter of 1 use Twincut Vario and box of shell core of vent-pipe of car of rough machining of the processing technique that break off bits is in final craft experiment research, the Vario milling cutter that use new design to make and undertook for many times improvement and sum up the technology of patent of the treatment that break off bits that give from this, received base of mould of envelope core box to undertake machining to the exhaust of some model car (1) seeing a picture. This base over all dimension is 914 × 711 × 127mm, workpiece material is 4140 steel (30HRC) . Treatment is on the machining center of power 25hp, horizontal of Makino MCB 1210 of 50 main shaft undertake. What the cutting tool in treatment has 178mm is dangerous extend length. Treatment test result is exciting, in assure to machine a spare parts to achieve while high accuracy asks, obtained apparent economic effect, the machine tool processes charge by every cubic metre inch (close 1.

6387 stere) 12 dollars fall to 6 dollars, cutting tool charge by every cubic metre inch 31 dollars fall to 2 dollars, total operating costs from every cubic metre inch 42 dollars fall to 8 dollars, cost of spare parts production is more managing than former technology 81.

6% . The production engineer Sarullo of PDT company says, "We are in the craft test that has efficient treatment to the mould, shorten handling time to 5 hours from 17 hours. " before using Vario milling cutter, PDT company ever also had used the cutting tool that another company manufactures. "In treatment so this car exhaust take-overs when base of mould of shell core box, need changes 20 razor blade, and use Vario milling cutter decreases to need to use 5 bit only, " when Sarullo introduces the advantage of Vario LC280TT razor blade to the user, say, "Use Vario milling cutter is a company managing a large number of razor blade. Original milling 500 cubic metre inch steel when, use the razor blade with a high price to be able to be machined only 0.

5 hours, go up because of knife head cutting temperature is exorbitant and make bit wears away, precision drops, machine to cutter hub causes loss and must stopping even. Use Vario milling cutter to be able to make cutting tool life is lengthened now to, add every razor blade to have 8 cutting blade, use through dislocation, reduced manufacturing cost greatly. " PDT company still is in the treatment of pair of another mould base, use the Vario milling cutter of 69mm of a diameter, choose cutting career 139.

3m/min of 3m/min, speed of 640r/min of main shaft rotate speed, feed and the cutting condition that cut deep 3mm undertake machining. And the diameter that the company uses to was produced in the past before this 50.

The common milling cutter of 8mm, can choose career of 764r/min of rotate speed of cutting speed 122m/min, main shaft, feed only 0.

78m/min and cut deep 5.

The cutting condition of 08mm undertakes machining. Comparative experiment considers to make clear, use the 23 ° with technology of patent of the treatment that break off bits and Vario distinctive milling cutter before horny geometry appearance, can make action is reduced at the cutting force on knife head 50% , decrease to cutting tool wears away and drop cutting temperature. The main characteristic of the efficient processing technique that break off bits was to realize cutting of tall feed rate to machine truly. "This is the perfect application of pair of Vario cutting tool, it is the leap that PDT company establishs to pledge best up to now. " Sarullo says. Accordingly, when it is machining mould antrum, make handling time is shortened by 17 hours of in the past to 5 hours. The appearance of cutting tool geometry that the Gao Jin of structural characteristic Twincut Vario of the milling cutter of head appearance Vario that Gao Jin of graph 2 Twincut Vario gives milling cutter gave milling cutter to use having a unique style (already won patent) (2) seeing a picture. Cutting tool designed two axial and radial amlposition (wrong tine) permutation cutting blade, can have compound treatment to the spare parts. The basis machines condition and requirement of precision of spare parts dimension, the fluctuation of cutting tool (axial) with the left and right sides (radial) the two cutting blade that photograph fault arranges can cut horn and the cutting deepness that had adjusted to undertake efficient cutting according to what differ severally, this will be formed wide it is only with Gao Zhi comparing previously of 1/4 cut bits sectional, make the cutting muscularity of the generation in treatment is reduced greatly, make the cutting performance dominant position of cutting tool is able to develop adequately thereby. Of course, this also is concerned with design of unique cutter hub structure. Inside the chamfer of bit fixed position that already had designed, can pledge different capable person, bit installs the TC280TT that has side of 8 cutting edge to have different before horn or the cutting blade of the horn before losing, with improving the cutting performance of Vario milling cutter further. "Bit won't produce crackle, also won't burst, " Sarullo says, "Although in interrupted cutting cutting tool is issued by circumstance of very big percussive, cutting blade also won't damaged. LC280TT razor blade shows infrequent tall durability in cutting, make cutting blade keeps sharp from beginning to end, undertake uninterruptedly actually free cutting (this is the cutting means) that cutting bound goes after hard all the time, undertake exceeding strong function namely the metal ' break off ' (those who describe its rate is fast) the treatment that cuts bits into broken shape (' break off bits ' the technology gets a) from this, is not normally extruding, cut a metal (speed is relative slower) treatment means. Because it has distinctive freeboard cutting property, meet those who generate very minor volume cut bits only consequently (it is about before 1/3) . " Sarullo says, "Be in usually, need to use gas to blow only, can of will minor volume cut bits to eliminate clean, purify working place, provide a safe manufacturing environment. " in the past, when PDT company machines same part, handlers needs the moving position of serious monitoring main shaft. Use Vario milling cutter now, what because avoided cutting tool,arise easily below abominable work requirement is serious wear away with damaged, liberated handlers from inside nervous working status come out, wear away in predicted cutting tool can be at ease inside time go doing other work. The Vario milling cutter of LMT-Fette company also was solved before the problem that milling cutter produces very big noise and vibration in cutting. "We produce a workshop next door it is 3 coordinate are measured machine (CMM) atelier. Reduce interference all in all to CMM atelier. " Sarullo says. The Vario milling cutter that uses the technology that break off bits is machining a condition badly to fall to reduce vibration effectively, maintain quiet working environment. Another advantage of Vario milling cutter is to be after it is good that cutting tool is adjusted, do not need collection machine program, can undertake machining to the spare parts, reduce the additional and auxiliary time such as process designing thereby. "In common treatment the condition falls, to cutting steel treatment status is unpredictable, but when we use Vario milling cutter, can use same a spare parts that machine program goes to machining cutting condition to agree not completely, can assure good treatment quality. " Sarullo says then, "In fact, the treatment condition difference that we also need not consider to process data surely or arbor length brings. " Twincut Vario milling cutter can provide extremely tall production efficiency for the user with the processing technique that break off bits, shorten greatly handling time, reduce cutting tool and machine tool to wear away, prolong cutting tool service life, reduce cutting tool cost, reduce vibration and noise, improve safe production environment, change production to offer good condition for nobody, because this is a kind of efficient treatment new technology that provides development perspective extremely. CNC Milling CNC Machining