# China in parabola of CNC Turning system grand to program is analytic

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Z machines N50 G71 U1 of of of N40 X31 Z3 of of of N30 G00 X80 Z80 of of of N20 T0101 M03 S800 of of of N10 G90 G94 of of %0001 to spare parts of deflection protruding parabola.

5R1 P90 Q200 X0.

Z0 of 5 .

1N110 #1=6;X of of of N100 Z0 of of of N90 G01 X12 of of of N80 G42 G00 X31 Z3 of of of N70 M03 S1500 F100 of of of N60 G00 X80 Z80 of F200 is worth N120 #2=-3;Z to initial drop radius to initial drop (opposite at parabola acme) whether does judgement of N130 WHILE #1 LE 12; walk along X to terminus (relatively at parabola, approach parabola outline (the deflection that should consider center here is measured) because N150 #2=-[#1*#1]/12; is variable Z to value N160 #1=#1+0.

1; step pitch 0.

1, namely Z is worth degressive quantity for 0.

1, this value affects appearance precision greatly too, pass burden of operation of small aggravating system, should take N230 M30 of of N220 M05 of of of N210 G40 G00 X80 Z80 of of of N200 Z-50 of of of N190 G01 X30 of of of N180 G01 Z-40 of of of N170 ENDW of the big that be worth to use VNUC numerical control to emulate software imitate treatment as far as possible below the premise of contented appearance precision, if pursue,as a result 2 are shown. Afore-mentioned Nextpage example we already did brief analysis in front, patulous example can communicate study for everybody below. 2.

Xiang Jun of X, Z has spare parts of deflection sunken parabola to if the graph is shown 3 times,be machined, this spare parts is when process designing, we are OK apply mechanically example the process designing format of 1, the deflection position of sunken, center and variable remove the protruding that both distinction depends on parabola appearance the computation of dead centre. ... #1=12.

5;X is worth to initial drop radius (get according to parabola center and mouth direction computation) #2=15.

626;Z to initial drop (the photograph is apical to parabola) whether does judgement of WHILE#1GE4; walk along X to terminus (relative to the numerical value at parabola center) G01X[40-2*[#1]] Z[#2-25.

626] ; linear interpolation, approach parabola outline (the deflection amount that should consider center here, sunken parabola takes negative worth) because #2=[#1*#1]/10; is variable Z to the #1=#1-0 that be worth .

1; step pitch 0.

1, namely Z is worth degressive quantity for 0.

1, this value affects appearance precision greatly too, pass burden of operation of small aggravating system, should take of of great value ENDW as far as possible below the premise of contented appearance precision... 4, when the last word uses numerical control lathe to machine parabola curve, should notice the following: (The step pitch that chooses when the precision of the workpiece after 1) turning and process designing is concerned. Step pitch value is less, treatment precision jumps over tall; but reduce step pitch to be able to cause workload of numerical control system to increase, operation is busy, affect feed rate rise, reduce treatment efficiency thereby. Accordingly, must ask according to treatment logical choice step pitch, ask in contented treatment premise falls commonly, choose bigger step pitch as far as possible. (2) to parabola center and Z axis not the spare parts of coincide, need has workpiece coordinate department slanting after buy, the method that narrates by place of the example in article next undertakes machining. (Protruding sunken case of the curve should consider when 3) process designing, both distinction depends on linear interpolation approaching the X coordinate in curvilinear block to change. (Process designing of turning of the outline inside 4) parabola and outside outline is similar, position of main consideration center, concave and convex circumstance reachs a dead centre place, the reader can weave according to apply mechanically of afore-mentioned example proper motion. The example that the article chooses already was in configuration China is mediaeval on the numerical control lathe of astral HNC-21T system run treatment actually to pass (among them radius of circular arc of point of a knife is 0.

4mm) , wait for parameter to be able to have set according to machining real environment to the F in process designing, S and Ap, set-point can offer reference. Afore-mentioned programs can regard formulary curve as pattern plate of grand program process designing use, need to change individual parameter to be worth only can. CNC Milling CNC Machining