Graph 1 part drawing
Graph 2 spread out sketch map
Plan of my unit treatment shows a part 1 times (material: 2OCrMnTi, normalizing, 170 ～ 200HB) , because it has the big lead of 150mm, and for the annulus that close 8 glyphs shape. We used method of awl whorl cutting on numerical control lathe, completed the treatment of this spare parts smoothly. 1 technology program and cutting principle this oil line by the graph 2 spread out plan institute to show two phasic difference of 180 ° close curvilinear composition. If lathe earth is connected to use profiling to become in general,change make tailstock machine, finish very hard, 180 ° can rotate workpiece to install clip turning afresh again after the car goes a curve only. And use hang annulus shake the hand after the feed orgnaization linkage of dividing head and milling machine, this spare parts puts milling in as much the move is phasic problem. In the meantime, to receive relatively good curve form, the milling cutter that the requirement uses its diameter Yue Xiaoyue is good. Bring about slightness of milling cutter arbor necessarily from this, tigidity is poorer, reduce cutting efficiency. And the blemish that numerical control lathe applies special technique to be able to make up for average car milling machine. Above all, one is given out to turn by coder of main shaft position when whorl of turning of numerical control lathe signal, numerical control system is being received after getting this signal, thread tool begins to start immediately, cutting whorl, adjust cutting tool the opposite distance between initial drop can be passed adjust phasic will achieve, namely: S=NL/360
In type: S — the opposite distance with bit more initiative thread tool, mm N — the curve is phasic poor, spend L — whorl lead, mm to the graph 1 spare parts, s=180 × 150/360=75mm, namely after treatment of the first curve ends, mobile cutting tool comes be apart from place of 75mm of primary starting point, turning the 2nd curve, both synthesis accords with what blueprint asks to close 8 glyphs oily line. Next, to assure a spare parts beautiful, feed retreats knife contrail and curvilinear outline must complete be identical. We use technique of awl whorl cutting, cutting depth increases in each loop of curvilinear outline form cutting, after achieving blueprint to ask, instruction of reoccupy awl whorl retreats a knife, effect ideal. Basis of 2 to program blueprint is given element of geometry of spare parts outline, receive following figuration orders: Start of certain treatment of main program O0001;G50X200.0 Z150.0; and coordinate origin (the nodical office that coordinate origin sets in spare parts the centre of a circle and front face) G0X59.0 Z5.0; walks along diagonal to stand by cutting tool of spare parts Z -7.5; to arrive at AM98P0002 L8; of oily line start to call a subprogram 8 times quickly, car W10.0 U -4.0; of deepness of cutting of W -75.0; nap uses the first oily line thread machining means retreats awl the knife arrives at the 2nd curve to machine start to be in M98P0003 L8; to call a subprogram 8 times quickly with G0Z -82.5; cutting tool, w -10.0 U -4.0; of deepness of cutting of nap of W75.0; of the 2nd curve uses turning awl whorl means retreats knife G0Z5.0; to exit X200.0 Z150.0; of spare parts lumen to walk along diagonal to return main program of treatment start M30; to end dextrorotation of curve of turning of subprogram O0002; G32W-75.0 U0.5 F150.0; quickly part subprogram of M99; of Zun Xuan part ends curve of turning of 0.5mmW75.0; of diametical direction feed curve of turning of subprogram G32W75.0 U0.5 F150.0; , if be used at formal treatment, number of the rotate speed that still wants be classified main shaft, cutting tool and change the instruction such as the knife, cooperate cooling fluid instruction. Those who want an attention is, the rotate speed set of main shaft should satisfy the need of cutting torque already, also want to accord with the limitation of speed of the biggest feed in lathe of specific numerical control.