5 axes machining center processes medium application in car mould

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  • source:BAGANZ CNC Machining
5 axes treatment is CNC Machining in the center very important one part, the domain that has waited for tall accurate instrument to make in shipping, aerospace, car, light industrial, medical treatment uses this one technology extensively. Among traditional pattern treatment, use 3 rods generally the milling treatment that machining center and vertical machining center will come to complete work. Make the progress with ceaseless processing technique as the mould of our country, traditional vertical machining center and a few weaknesses of machining center also show 3 axes gradually. Current, what use generally between mould treatment is ball head milling cutter, although benefit is apparent,ball head milling cutter is used among mould treatment, but if use vertical machining center, its underside line fast it is 0, bright and clean degree poorer also, through 5 axes machining center undertakes machining to the mould, the insufficient place of above can be overcome completely. The author analysed 5 axes between the article machining center machines the advantage in the center in the mould, machined medium application to should undertake discussing in the mould to its. The 1, advantage that analyses 5 axes treatment is in 5 axes treatment, use flat bottom to carry milling cutter, to mixed pattern treatment surface holds a kind of perpendicular position, can reduce the time of treatment considerably. 5 axes the principle of machining center, return applicable belt to the flank milling of angle surface is machined, can eliminate the costal state lines that establishs milling cutter treatment to bring about by ball end, make the exterior quality of the mould more good, also cut the workload that because of clearing mould surface needs to add artificial milling and manual operation. Pass 5 axes processing technique, the debugs outfit card problem that makes workpiece locates in mixed point of view need undertakes for many times again is able to solve, make time shortened not just, the error that produces among them also is reduced greatly, the big fee of the tool clamping apparatus that needs when installing workpiece also got managing, and the treatment that the machine tool also accomplished pair of complex parts, for example treatment of the drill that complex surface place requires, taper, model antrum recess, it is traditional method impracticable. The cutting tool that uses between 5 axes treatment is shorter, return at the same time but the treatment of one-time will whole spare parts is finished, need not hold card again or be to use the longer cutting tool that congener 3 axes need among treatment, can make in what the mould finishs inside shorter time, and the quality of spare parts surface is better also. 2, analyse 5 axes machining center machines medium application to design what car spare parts basically uses at present in car mould is CAD system, adopt converse project and the design that all sorts of experiments complete a part, machining what the complex surface of the mould uses is CAM software, but, how does ability ensure design and the precision that add man-hour want to rely on CNC Machining quite, author thereinafter analysed 5 axes the between relation that machining center machines medium application to be the same as car mould quality in the mould. 2.

Among the process that the treatment car mould of mould of 1 pair of deep antrum makes, application is like when machining deep antrum mould 3 axes machining center, want to come true must lengthen knife handle and cutting tool, but use 5 rods machining center treatment is deeper with steeper model when antrum, the craft condition with want to machine creation to the mould better can carry work or the add circumgyrate of main shaft head is mixed swing, can make cutting tool length gets shortening appropriately, put an end to cutting tool to be the same as thereby arbor and model the happening that collision phenomenon produces between antrum wall, reduce those who add man-hour cutting tool to shake with damaged, the service life of cutting tool gets extension, the exterior quality of the mould and treatment efficiency also rise greatly. 2.

2 moulds parietal machines pair of mould parietal treatment, use 3 rods length of machining center cutting tool should compare sidewall deepness big, also decide cutting tool length by sidewall deepness, if increase the length of cutting tool, its intensity can be reduced apparently, if 3 times diameter lets prep above of cutting tool length,knife phenomenon can happen, the quality of workpiece will assure hard. If use 5 rods,machining center is machined to the sidewall of the mould, can use main shaft or be workpiece swing, make cutting tool and mould sidewall present a perpendicular position, mill can use planar milling cutter when mould sidewall, can improve workpiece quality so and prolong the service life of cutting tool. 2.

When the curved surface with 3 calmer moulds machines calmer to the mould curved surface, machining center needs 3 axes the Dao Jingxi that use a ball, get good exterior quality, and the need below this kind of circumstance increases cutter track, but the center of cutting tool of ball head knife rotates line fast it is almost 0, the rate that when the mould is machined cutting tool injures is older, the service life of cutting tool can shorten, and mould surface quality also can become poor. Use 5 rods the curved surface with machining center equaler treatment, can get on cutting tool into proper point of view to have the treatment of workpiece again on workpiece, can add the opposite line between workpiece and ball head knife so fast, not only can make the service life of cutting tool gets rising, workpiece surface quality also can rise considerably. 2.

When 4 irregular to the mould curved surface undertake the mould of irregular to having curved surface is machined machining, before general it is through 3 axes machining center is finished, the cutting process that the whole way that the direction of mould of cutting tool cutting is edge cutting will come to move won't be changed, at this moment the condition guarantee against of the cutting of point of a knife of cutting tool mould the perfect quality of each place. The pattern with more frequent like curvature change mould and later groove can pass 5 axes machining center will machine, cutting cutting tool can make cutting position is achieved from beginning to end optimal, the direction that cutting tool can make whole treatment method moves gets the biggest optimize, and cutting tool still can make linear motion at the same time in this, the each place in the curved surface of the mould is met relatively perfect. 2.

The treatment of different geometry appearance uses 5 patterns machining center is opposite 5 axes when the pattern that has three-dimensional curve plane is machined, to the cutting of the mould treatment is protected from beginning to end in first-rate job status, the random that the angle that cutting tool works can machine in the machine tool is changed inside area, complete the treatment of geometrical form mould thereby. 2.

When the treatment of the inclined hole on 6 moulds cant undertakes machining to mould cant inclined hole, use 5 rods the movement that machining center can place a treatment through placing head type machine tool, the respect that hangs down in workpiece cant places main shaft, be located in accurate aperture surely. Want to want the accurate treatment on the mould to give inclined hole, need interpolation of at least two linear axes to move ability is OK, and aperture precision also is in this process reduce apparently. If treatment cant aperture uses the 5 rods that place table machining center, the movement is to pass a machine tool to place a stage to place the cant of the mould in the position that hangs down with main shaft, main shaft among them the treatment of the independent movement inclined hole of a linear axis can be finished, can raise the precision of aperture apparently. 2.

Not in the proper way of 7 pairs of moulds wants to the milling with sharp change a when milling changes without direction linear, want point of a knife to delimit only linear but, if direction needs a change, point of a knife delimits a curve but, direction of cutting tool point of a knife is changed, want again at this moment linear, be about this curve with must compensation, use 5 rods machining center is this bit all in all. If control system did not consider the length of cutting tool, cutting tool rotates around axial center, the point of a knife of cutting tool cannot be secured quite, extremely possible meeting moves a current working position, but in 5 axes function of 5 axle control is had in the system of machining center, in the operation that processes a mould, although the direction of cutting tool is changed,use system of 5 axle control, but the position of its point of a knife is to be able to keep changeless, axis of the Xyz in this process must compensation motion also is gone in by automatic computation at the same time, right now treatment precision rises apparently. Anyhow, between mould treatment, use 5 rods the interference that machining center can avert cutting tool, the complex part that can machine hard to common 3 coordinate machine tool undertakes machining, to straight grain face kind the treatment of the mould, can use side mill formula one knife shapes technology, the quality of treatment is good, efficiency is tall also. To establishing bodily form range, especially when large calmer surface is machined, can carry milling cutter to carry adjacent and large surface to machine through big diameter, frequency taking a knife can decrease, leftover height is lesser, treatment efficiency and exterior quality can get rising effectively. To the mould many airspaces surface can install clip to have multitask foreword and many treatment, make treatment efficiency rises, still can improve each appearances effectively the precision of mutual position. Use 5 rods when machining center is machined to the mould, to workpiece, cutting tool can fall at most significant cutting position from beginning to end, in certain treatment field, can adopt large size cutting tool to keep away from each other interference, the tigidity of this kind of cutting tool is better, treatment precision and treatment efficiency can get rising. Accordingly, 5 axes the treatment adaptability of machining center is wider, be worth to be popularized extensively. CNC Milling