Dry type cutting is in the action in gear cutting

1~48.

0m/min, feed: 0.

5mm, cutting cutting tool: R0 of radius of point of a knife.

4, be equivalent to SKH4 high-speed steel, do not worry bit again. Without accurate lube, without air cooling treatment; Have accurate lubricating oil, without air cooling; Have accurate lubricating oil, have air cooling; Without accurate lube, have - 16.

7 ℃ air cooling has, when very low strong air cooling machines use temperature of function of the cutting when without vegetable oil cutting agent reachs air cooling, be frozen to prevent fat dose and lose lubricity, before can be being machined, plant of the minim on besmear of cutting tool surface is oily, supply strong air cooling to treatment dot next. Do not let strong air cooling and fat dose be mixed one case namely, the effect will be better. Fat dose of use minim plant, not only reduced cutting specific power consumption, and still eliminated work rustily phenomenon. Nextpage 　 2, machine tool of numerical control of method of coating of new hard alloy of application of domain of gear cutting of dry type cutting is used, make columnar gear makes appear new trend: Without cutting of high speed of cutting tool of cooling hard alloy. If craft parameter presses optimal setting, can make handling time short, cutting tool life is longer. 3 water chestnut companies of Japanese, United States Gelisen the company this respect was begun fruitful research. 3 water chestnut companies of Japanese rolled out system of rolling cut of the first dry type. It uses rate of rolling cut of cutting speed tradition) times, can achieve 200m/min.

Dry type rolling cut has special demand to hob, company of 3 water chestnut designs special hob doing type, use MACH7 high-speed steel, exterior besmear has special coat, conduce to come loose to heat up and reduce cutting tool loss, its life can be lengthened general wet cut way 5 times. Pinion of gear of drive of class of end of car of treatment of this one system, large load gear, car and fruit of planetary gear effectiveness for a given period of time are very ideal, manufacturing cost is reduced at least 40% .

The United States the company uses Gelisen bevel gear of treatment of law of dry type cutting is used on machine tool of Phoenix of hard alloy hob, as wet as cutting tool of traditional high-speed steel cutting law photograph is compared, reduce cutting time for 50% , and exterior surface roughness is showing gear to reduce geometrical precision to also rise greatly, treatment precision can amount to AGMA12~13 class. This company produces GP set gear-hobbing machine, design distinctly with its, make its work cut quality can with wet cut quality to rival. Its lathe bed designs brae of old point of view, cut bits flow with benefit. Lathe bed interior cools circularly, with benefit Yu Wei maintains hot balance. In addition, the machine tool still deserves to a vacuum removes dust except bits system. This a series of gear-hobbing machine, rolling cut rotate speed can amount to 3000r/min.

High speed does type cutting law to be like next advantages: Above all, as a result of its leave out process of oily bits depart, without oil of cooling and lubricant gasoline tank bits departs device and corresponding and electric equipment, accordingly, machine tool structure is compact. Next, this kind of method improved treatment environment greatly; Treatment charge also is reduced greatly. To prolong cutting tool life further, improve workpiece quality, but process of cutting of gear dry type, lube of horary use 10~1000ml undertakes minim lubricates. Generation of this kind of method cuts bits to be able to think to work cut bits, internal stress of quality of workpiece precision, surface does not get minim lubricating oil negative effect, still can undertake with automation equipment the process is monitored. American fee is special company (LMT-Fette) fight gear wheel of type rolling cut with hard alloy cutting tool, make gear only cost reduces a handling time apparently. Place of ironwork of Japanese firm cane develops gear-hobbing machine of KC250H dry type, use refrigeration of hard alloy hob, air cooling, minim to lubricate, undertake high speed gear hobbing, because supply temperature stabilizes air cooling, workpiece heat is out of shape dinky. It and tradition use KA220 of high-speed steel hob model wet gear-hobbing machine photograph is compared, treatment rate rose 3.

2 times, gear precision also rises apparently. 3, cutting of brief summary dry type and wet cutting photograph is compared, not only raised a machine tool to manufacture efficiency greatly, reduced workpiece finished cost, and be helpful for protecting an environment, managing rich. Abroad, dry type cutting studies application is wider, according to concerning sectional statistic, at present Western Europe already had close half enterprise to use treatment of dry type cutting. Although home has partial orgnaization to be engaged in this respect studying the work, but the application inside gear cutting domain is blank still. ISOJIS14000 series standard constituted go into effect 1996 respectively, these standards are reached to environmental management monitor have strict regulation. They are carried out, challenge again to exit of product of our country machine tool undoubtedly. To increase capacity of innovation of craft of content of technology of our country product, remain invincible of international market competition, begin processing technique of dry type cutting to study development is very necessary and pressing. CNC Milling