Of crankshaft oily aperture flexible treatment

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Crankshaft regards engine as one of the most crucial parts in assembly, to workmanship equipment is having very high demand. The conventional treatment of crankshaft oily aperture uses private plane transfer matic (Transferline) means, the transfer matic of crankshaft oily aperture by auger straight oily aperture, get inclined oily aperture, orifice to pour horn and crankshaft to rotate throw the industry such as oil composition, its characteristic is to cover an area of an area big, structure is complex, although can satisfy crop well the biggest the requirement that change, dan Jirou sex is opposite poorer, the equipment when machining new breed crankshaft transforms cycle and cost very tall. In last few years, with German TBT deep aperture gets technical limited company (the following abbreviation " TBT company " ) for the representing's engine production equipment supplier developed collect to get straight oil aperture, get inclined oily aperture, orifice to pour horn and crankshaft to rotate swing oil. This kind of machining center can be machined arrive from one-cylinder the crankshaft of 6 crocks of engine, treatment length limits is 300 ~ 3100mm, have very tall flexible, at the same time the treatment metre of product line of OK and contented big batch asks. Since come out, this kind of equipment already was gradually on the crankshaft product line of manufacturer of foreign famous car apply extensively. Below with this crankshaft oil aperture is flexible brief introduction designs machining center plan and applied characteristic. Oily aperture of crankshaft of design program TBT is flexible machining center is mixed by system of unit of head of lathe bed, pillar, bore, workbench, clamping apparatus, cooling fluid, hydraulic pressure center type to change a knife system of numerical control of lubricant system, Siemens 840D and knife library, automatically device and get set change automatically. Mutual X axis, Y axis, Z axis, W axis, A axis, B axis and C axis in all rod of movement of 7 numerical control (see a picture 1) . X axis: Pillar drives the bore head that installs its to go up to undertake transverse level moves, in order to realize the oily aperture treatment of position of the axial on workpiece; Y axis: Bore head has perpendicular shift along pillar direction; Z axis: The labour of deepness of bore of bore head implementation is entered and speed; W axis: Workbench speed or retreat quickly in order to adjust the distance of workpiece and cutting tool, mix X axis, Y axis many axis linkage, the annulus mill that realizes inclined oily orifice pours wine cup; A axis: Workpiece rotates actuating device, the bore that realizes Zhou Xiangwei buy is machined; B axis: Workbench drives clamping apparatus 360 ° rotate, in order to adjust the opposite point of view of workpiece and cutting tool, the working station that finish and fluctuation makings are versed in changeover; C axis: Cutting tool undertakes cutting moves gyral. The norms cent of center of work of oily Kong Jia of crankshaft of main norms TBT is W200-KW, BW250-KW and MD30-KW 3 series, apply to treatment respectively car crankshaft, lorry crankshaft and marine crankshaft. Small-sized crankshaft oily Kong Jia is versed in central BW200-KW applies to crankshaft of treatment car engine. BW200-KW can ask to deploy 1 ~ according to the client's metre 3 main shaft (gun getting main shaft and main shaft pouring wine cup) machine at the same time, bore diameter is 2 ~ 12mm, the athletic travel of X axis, Y axis, Z axis, W axis is 1000mm, 320mm, 800mm, 800mm respectively, deepness of the biggest bore amounts to 400mm, workpiece clip holds length limits to be 300 ~ 700mm, limits of stepless speed regulation of main shaft rotate speed is 1000 ~ 20000r/min, deploy pillar type knife to be changed library, automatically knife and auger set change automatically device. Medium-sized crankshaft oily Kong Jia is versed in central BW250-KW applies to crankshaft of treatment lorry engine. BW250-KW can deploy 1 ~ 3 main shaft (gun getting main shaft and main shaft pouring wine cup) machine at the same time, bore diameter is 2 ~ 15mm, the athletic travel of X axis, Y axis, Z axis, W axis is 1920mm, 560mm, 1000mm, 870mm respectively, deepness of the biggest bore amounts to 600mm, the biggest clip holds work length is 1300mm (can ask according to the client special design) , limits of stepless speed regulation of main shaft rotate speed is 1000 ~ 20000r/min, deployed pillar type knife to be changed library, automatically at the same time knife and auger set change automatically device. Machining center Varioflex MD30-KW applies to large crankshaft oily aperture treatment is marine the large crankshaft such as diesel engine, here does not make detailed introduction. Apply a characteristic 1. Use a gun to get craft and MQL cooling technology, improve oily aperture precision and treatment efficiency. Gun getting regards a kind of efficient half nicety as aperture treatment craft, bore diameter precision can amount to IT7 ~ IT9 commonly, exterior surface roughness is Ra 1.

6 the left and right sides, to cast-iron attune of blame of the carbon in mixing pledges rolled steel expects, the bore feed that common gun gets can amount to 150mm/min. The experience of application of research and development that TBT company comes 40 years get technology to the gun uses the treatment at crankshaft oily aperture, take the lead in giving out oil of much axis crankshaft aperture is flexible machining center, will flexible and efficient machine faultlessly union to rise. Nextpage comes nearly 10 years, TBT company is studying MQL refrigeration technology gets craft to be applied mediumly in the gun all the time, pass different workpiece data contrast for many times treatment experiments, take the lead in using MQL technology successfully get treatment at the gun, development of corresponding land went a gun to get cutting tool coating and blade to grind technology of form a complete set, make machine efficiency to rise considerably further, bore feed raises 300 ~ 500mm/min. It is with 4 crocks of crankshaft of sedan exemple, treatment content cuts all straight inclined oily aperture and orifice to get, oily aperture of crankshaft of axis of a TBT3 year of productivity of machining center more than 200 thousand. 2. The clamping apparatus that uses Gao Rou sex (see a picture 2) , improve process centralized degree, broke machine tool process capability to be opposite the confine of crankshaft norms dimension. Graph the clamping apparatus clamping apparatus of 2 Gao Rou sexes can follow workbench 360 ° rotate, be versed in in order to adjust the opposite point of view of workpiece and cutting tool and working station and fluctuation makings changeover; There is workpiece to rotate on clamping apparatus actuating device, machine in order to realize week of bore that differs to the position; The tip of clamp of rear push frame that numerical control locates can undertake adjustment according to the length of workpiece; The radial fixed position of crankshaft adjusts implementation through numerical control; Sealed card claw passes orifice what numerical control realizes oily aperture of diameter of corresponding main shaft is sealed, in order to make when aperture is interlinked, the straight oil on inclined oily aperture and neck of corresponding main shaft will not reduce generation explosion burr suddenly because of oil pressure. The place on put together is narrated, can see machining center has TBT crankshaft oily aperture to highlight a characteristic below: ■ can install clip to finish bore, orifice to fall horn and swing dry cutting oil; ■ the crankshaft that can machine different length, different oily opening position and amount, different stroke, different width opening file, different journal, have very tall flexible; ■ breed changes to come true very easily, should change only corresponding knife complementary provide and the component such as clamp card claw, use corresponding machine program can, normally breed commutation needs 10 ~ 15min to be able to come true only. 3. Use auger set form enclosed gun to get treatment course. Graph 3 get set enclosed oily aperture of treatment TBT crankshaft of machining center get an installation to be on the box that discharge bits, surface of clingy workpiece, the aperture of straight oil of main shaft neck that intersects with the inclined oily aperture that machining is encased closely by sealed card claw, cutting oil leads to cutting area through cutting tool interior, next with cut bits to get the chamfer that discharge bits and the space that get inner room to discharge in the box that discharge bits through the gun together, the treatment process that fashions to close relatively (see a picture 3) . This kind of method basically has the following advantage: ■ auger set beginning to get fashionable have oriented effect to broach, oriented hole need not be drilled beforehand in workpiece surface when the gun gets bore, shortened consequently treatment process, reduced finished cost, and won't appear in orifice aperture of a flight of stairs; ■ the environment that close makes cutting fluid, cut bits and oily mist to be able to discharge the box that discharge bits only in, won't fall to workbench to mix in the machine tool, reduced cutting fluid use up, reduced the working intensity of machine tool cleanness, of facilitating oil mist draw-out, be helpful for environmental protection sanitation. 4. Avoided to machining circular process to undertake changing a knife, shortened greatly bide one's time time. This machining center was deployed auger set change device is replaced get oriented aperture cutting tool, every main shaft is replacement of 5 different point of view or length get set, auger set in changing to adjust a process in below treatment one position, undertake at the same time. 5. Monitoring of executive treatment process, avoid cutting tool to wear away. This machining center basically changes through feed pressure and drive power changes means of two kinds of monitoring comes to those who avoid cutting tool wear away: ■ the supervisory and control arrangement of ARTIS cutting tool that configuration belt learns a curve, set power maximum and span of limit of the least value; ■ or supervisory and control arrangement of cutting tool of configuration BLUM laser; ■ or supervisory and control arrangement of pressure of configuration SANDVIK feed, install feed pressure maximum and span of limit of the least value. The place on put together is narrated, machining center has sex of TBT crankshaft oily Kong Rou very tall flexible, process capability broke crankshaft the confine of specific norms, and manufacturing efficiency is very tall, accord with the metre of big batch product line completely to ask. Current, in the whole world already in the machine tool of treatment of crankshaft oily aperture that consign uses, TBT company is the mainest supplier, foreign user basically includes Daimler-Chrysler, BMW, Porsche, VW, VOLVO, Renault and Triumph Motorcycles to wait, chinese user has Shanghai wood of bell of river of morning of general, Shenyang China, strange luck, prosperous and one steam engine the factory. CNC Milling CNC Machining