Not be merely in the bore on the mould

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  • source:HAOYU CNC Machining
The domain is machined in the mould, the EDM processing technique of small size aperture is a kind of method that raises treatment precision effectively. Apply at horniness material when technology of bore of EDM electric spark (wait like mould steel, tool steel) on treatment when, what machine the Kong Dou that come out to have particular function sex. Arrive from coping the precision of floor opening is different, to technology of most EDM bore, the Kong Hui that a very common problem machines namely forms awl model, also be us what say " warhead " . Low pressure controls power supply to eliminate aperture " warhead " phenomenon, die manufacturer needs to consider a few relevant factors carefully when purchasing drilling machine of EDM of high speed alveolus, be not is attention electrode itself, what need an attention more is how to control power source to corrode metallic stuff (graph 1) . Graph the control power source of this 1 equipment did not make electrode arises " warhead " change, can machine the opening that gives exterior cleanness, when and can discharge quickly using EDM to undertake bore is machined, if use the low pressure that does not exceed 35V to corrode a metal, be worth to recommend however instead. Power source of this kind of low-pressure control can be below the circumstance of electrode small loss treatment of implementation high speed, another advantage is to be able to use ordinary tap water to cool, go ionic water can make him additionally use. All these characteristics can make sure the machine tool is in 2in (1in=25.

4mm, similarly hereinafter) 15 diameters are finished on thick D2 material 0.

After the treatment of 040in aperture, use up an electrode only (graph 2) . Graph the cooperates dispute to often choose accurate power source system importantly to be able to assure electrode end panel of power source of 2 right in EDM bore treatment choices and treatment speed very level off, the in the aperture when electrode discharges underside that makes sure treatment comes out at the same time is clean. What when most EDM bore is machined, use is the voltage of 100V, voltage makes an appointment with the circumstance of 300% to fall above quota, can make a lot of electrode end panel become " warhead " . Use low pressure controls power source to be able to discharge more sufficient, hole wall is more perpendicular, side error is smaller, and can maintain level of electrode end panel. Electrode material loss also can be reduced, can reduce 25%~30% usually. For example, in the bore on 17-4 stainless steel, bore diameter is 0.

027in, hole depth 0.

035in, the EDM drilling machine that uses low-pressure power source completes bore treatment inside 8s, electrode material loss is 25% . The electrode with a long 16in can machine 150 aperture, the electric spark white layer that there can be 12~15 μ M on hole wall additionally, the biggest ply that work place allows is 20 μ M, power source of use low pressure can fall side error to lowest. The comparison of Nextpage and punching machine uses CNC report to machine (EDM) punching machine workshop can machine the aperture with a better quality, but the treatment that use punching machine needs to cost more capital and time to use the part that finish (graph 3) . For example, the expenditure of an EDM drilling machine is 25000 dollars about, machine at CNC report relatively (EDM) initial investment needs to restrain 95000 dollars for punching machine. Although report is machined (EDM) punching machine is first-rate below most circumstance tool, but asking in tolerancepublic errand is not very slashing condition falls, use EDM drilling machine is more well-advised choice probably. Use punching machine undertakes bore treatment can make the precision of aperture taller, but need the money with extra much expenditure and time however. Graph 3 when using EDM technology drill, use punching machine is exclusive and right choice when the operation asks the workshop is undertaking alveolus EDM is machined, want to read an operation carefully to ask above all, master the statement that uses the operation that finish seriously. If machine bore diameter,be in 0.

012~0.

Inside 12in limits, EDM drilling machine can satisfy a requirement. To high quality requirement, if miniature aperture mould had better choose EDM punching machine,will complete an operation. Most alveolus treatment passes electric spark to machine with EDM drilling machine only (EDM technology) can operate in order to finish. And how to define these alveolus? Do one machine delicate aperture? A small hole? If undertaking is of system of aperture of nozzle of aperture of cutting tool refrigeration, inject or other fuel infuse,machine, bore diameter is about 0.

025in, so EDM drilling machine is first-rate choice. Return to from laser beam machining in recent years, job shops purchased aircraft of laser beam machining generally, and a lot of users serve as EDM drilling machine reserve equipment. But, if the metal is drossy,should encounter, hole quality is uneven when waiting for a problem, a few users can regard the first selection method that Kong Jia is versed in as EDM drilling machine afresh. In the manufacturing process of the spare parts, no matter be the cooling aperture on lamina of treatment jet turbine, still be the aperture on injector nozzle, so the user of machine of a few use laser beam machining begins to use EDM alveolus drilling machine afresh again, because so OK the stability that better assurance machines quality. After using laser beam machining, the reverse side in workpiece and bottom meeting generation are many " heat accumulates tumour " with the metal drossy, cannot machine the aperture of the high quality with a circularity standard, wall and completely perpendicular underside so. Additional, EDM drilling machine can make the workshop machines ± 0.

The blind aperture with deep 005in. And when using other technology to machine the blind opening that has deepness demand, the underside that cannot realize aperture and mouth place radius are consistent. Use EDM drilling machine correctly to be able to machine the opening that gives on 1000 to requirement of certain hole depth and underside dimension accord with a requirement, if the underside aperture of a few aperture has tiny systole finally, that also is very reasonable. The requirement of most client is life of speed, precision, tool, and cost, low-pressure EDM drilling machine can satisfy the requirement with very big range in alveolus treatment, what we need to consider now is the possibility that implements technology of this kind of treatment automation. CNC Milling CNC Machining