The new breakthrough of grinding of large gear wheel

Card handkerchief (KAPP) the precision work that the group provides the machine tools of newest grinding technology and whole set to be used at gear and profile for the client. Card handkerchief (KAPP) the equipment of the group involves car, aerospace, reduce the trade such as air and refrigeration equipment. Current, card handkerchief (KAPP) group in the whole world 6 branches have 850 Yu Ming stuff. The Na Ersi company that is located in German Berlin is subject Yukapa (KAPP) group, be industry of machine of large roll flute get the person that run, the equipment that its produce basically is applied at the foundation construction, wind-force generates electricity, orbit traffic, nautical wait for a domain with mine machinery. In going 10 years, na Ersi company has made work gave limits of more than 20 diameter to be in the roll flute machine of 4~5m. Latter, the market is right bigger, is workpiece diameter amounted to 8? The demand of machine of M roll flute begins to show. Before, the gear of this kind of diameter uses hard tooth flank of blame temper by dipping in water more, precision demand is not high also, it is to be in gear-hobbing machine or the treatment on the machine that insert tine, and, gear of this kind of big diameter should be divided into a few paragraphs to make normally, undertake assembly again next, the precision after grinding restores completely after assemble very hard. The demand that what force is prompting machine of pair of so large roll flute be so? The reason depends on the following: Ask to rising ceaselessly to the precision of big diameter gear; Big diameter gear also begins to consider hard tooth flank of temper by dipping in water; The requirement completes full treatment on least machine tool. Appeared below this kind of viewpoint new machining center, in bore hole, dentiform rough machining still can undertake besides turning, milling, and subsequently gear finish machining is with respect to need on roll flute machine undertake; When gear hobbing machines big modulus gear, as the hob that final quality assures gear, not only extremely costly and production is periodic and endless. Conversely, if use rough machining again the method of roll flute, cutting tool / grind a cost cheap, suitable scope is wide, and be bought easily; Workpiece repair is more convenient; Can undertake on roll flute machine online measure. Be based on the precision with long-term itself of roll flute machine to maintain a gender, buy is in what the measurement unit on roll flute machine needs to place inside measure precision for enough use, and so tremendous gear detects equipment normally for find very hard; Besides roll flute, still can have other precision work on roll flute machine, for instance: The grinding on outer circle measures datum plane. So numerous advantage attracted Changzhou day hill deeply to weigh project machinery limited company, they ordered diameter of workpiece of a grinding to amount to machine of the ZP80 of 8m roll flute to Na Ersi company. The structure of this machine tool is designed (graph 1) the ZP series model that is based on maturity, the integral pillar on the machine tool is used generally already in ZP40/50 type. The core part of this tremendous machine tool is circumgyrate workbench, its are used static press bearing, pitching moment electric machinery is direct drive, any mechanical contacts are done not have when circumgyrate, assured the high accuracy with long machine tool thereby. Graph the ZP series model that the structural design of this 1 machine tools is based on maturity, the integral pillar on the machine tool uses Na Ersi company generally already in ZP40/50 type to offer the circumgyrate workbench of two kinds of norms to be able to choose for the client. In balance after the size range of pipe bent of factory workpiece and economy, day hill is versed in the decision chooses the workbench that 70t bearings again, na Ersi is on circumgyrate workbench, the clamp that installs a diameter to be 4700mm dish, all sorts of tool clamping apparatus all can pass clamp dish groove secures the T form that go up to go up in workbench. Of machine tool shield making is one catastrophe problem. According to present safe level, allow to use whole sealing shield only, not only the discharge outside wanting to prevent cooling oil, and should assume emery wheel blast to crack, oil explodes and when on fire defend. And the means that Na Ersi company uses profile frame to build solved this one problem, the course examines on the safe side, at the same time also give attention to two or morethings apparent aesthetic feeling. The machine tool is made after finishing, passed all sorts of function to detect namely inside short time. Two Europe potential user expressed the interest to this type instantly, offerred gear to try to Na Ersi company grind. The first job that Na Ersi company receives is repair a diameter near 7m, modulus 28mm, weight amounts to the rolling mill gear of 36t. Of gear of such a fission go up makings, calibration and clamp are not an easy thing. The company uses Na Ersi " high speed is measured " software decided all and alveolar actual surplus distributings, the requirement of the user is as far as possible less purify surplus, it is very clear that surplus allocation wants the grinding that asks operation personnel is alveolar to every so. After deciding surplus allocation, can omit needless grinding journey, and can reduce the grinding time of about 20% . The precision after this workpiece grinding exceeded the expectation of the user greatly. The 2nd task is grinding the thin wall gear of a changeful form, tine is counted 730, modulus 10m, need goes to its grinding as far as possible good precision. If the graph is shown 2 times, the data strength of this workpiece is not high, first job is to find the right kind that hold card and calibration way, with coming true axial beats and radial beats in 0.

010mm less than. This gear to diametical 7500mm, it is challenge of a huge. The company used Na Ersi again " high speed is measured reach complete contact grinding " software, practice proof is very valid, the precision after gear grinding reached 2 level, it is the highest precision that at present the gear cutting of this kind of dimension can achieve. Graph the data strength of 2 workpiece is not high, first job is to find the right kind that hold card and calibration way, with coming true axial beats and radial beats in 0.

010mm less than, to the gear of diametical 7500mm, this is a huge the challenge is current, as this machine tool roll out, na Ersi company revealed his to be in those who create field of machine tool of grinding of large gear wheel to get to the world again army person actual strength. New model also offerred new opportunity for the user. In future, the company still is in Na Ersi to advance towards new target: Satisfy the roll flute requirement of bigger norms workpiece, compositive on roll flute machine perhaps other finish machining working procedure. The company believes Na Ersi, advanced equipment and craft and unapproachable expert group can produce powerful force, can better offer the high-tech solution that answers sophisticated treatment task for the client. CNC Milling