Cutting tool radius slants buy processes medium application in outline curve

Y.

D, G18 G41(or G42)X.

Z.

D, G19 G41(or G42)Z.

Y.

D, among them the planar statement that G17/G18/G19 chooses for place respectively, namely YZ is XY plane, XZ plane, planar, x, Y, Z slants for the cutting tool radius that finish the positional coordinate of buy (see a picture 1 medium K1 nods) , d.

It is cutting tool radius slants buy symbol, cutting tool of ordinary control system slants buy symbol from 01, use 99 numbers for the choice, can operating the v on face plate, inside each symbol importable value of different cutting tool radius, d.

Symbol and G41(or G42) must be used in couples. (A) (b) (c) pursues radius of 22 cutting tool slants the spare parts that the action of buy machines on numerical control machine tool, want to pass rough machining commonly, the measure that takes as a result of place of rough machining process is very inhomogenous, dimension precision and face get in finish machining bright and clean spent limitation is finished impossibly that one knife is machined, must machine ability to finish through a few knives, involve cutting tool to slant so buy function, use different cutting tool radius to slant with same a knife, same process namely the treatment that buy will come to complete work. If machine a graph curve of 2 cam outline, if rough machining presses the unilateral outside the curve to leave the finish machining surplus of 4 ～ 5mm, adoption cutting tool diameter is F30 establishs milling cutter, because cutting tool radius is 15mm, rough machining leaves surplus to be 5mm,can see, slant when cutting tool radius the as it happens when buy is 15+5=20mm and workpiece outline are conterminous touch, narrow when cutting tool radius to as it happens of the cutting tool when 15mm and workpiece outline real measure connects touch, can be finish machining cent 3 knives treatment to finish so, the first knife: Feed quantity is 3mm, see graph 2(a) , cutting tool radius slants buy is set for 20-2=18mm dimension of real measure unilateral returns outline of such cutting tool distance poor 18-15=3mm, the 2nd knife: Feed quantity is 2mm, see graph 2(b) , cutting tool radius slants buy is set for 18-2=16mm dimension of real measure unilateral returns outline of such cutting tool distance poor 16-15=1mm, last knife: See graph 2(c) , those who consider cutting tool wear away reach requirement of work measure precision, but first check provides dosage measure workpiece part of two basic circle is worth actually, decrease with photograph of dimension of the R1+R2 in the graph again, its the result is divided with 2 it is unilateral and final finish machining surplus namely, radius of such last knife cutting tool slant buy can set for: Radius of cutting tool of the 2nd knife slants buy value 16mm is subtractive and final surplus of unilateral finish machining. Slant through radius of above cutting tool the precision work that the setting of buy can complete outline curve, the operation is very convenient also, do not need to change a course, also do not need to change cutting tool, move in the program every time before, need to operating radius of cutting tool of the v on face plate to slant to buy is installed and be changed only slant buy data is OK. Radius of 3 cutting tool slants of buy build and cancel to be in enter cutting tool radius to slant radius of a dot removing a knife, cutting tool that finish should be built to slant on the program before buy the buy point, course taking a knife, dot that retreat a knife and cancel cutting tool radius to slant buy point, by the graph 2 in can see, cutting tool moves to 1 o'clock above all, at 2 o'clock radius of the cutting tool that finish slants buy falls direction of round tangent of R1 of knife, edge moves point-blank at 3 o'clock, choose cutting work along 4-5-6-7-3 next, in tangent of edge R1 circular arc direction moves point-blank at 8 o'clock, carry the knife uses G40 instruction to cancel compensation of cutting tool radius, the program ends. The choice cancels cutting tool radius to compensate a method, in principle is the place that runs cutting tool to be far from workpiece, raise Z axis, next reoccupy G40 instruction cancels a knife to slant, can cancelling cutting tool radius in order to prevent to slant so the happening that workpiece outline destroys to cause dozen of knife and accident in buy. Can see cutting tool radius slants from this buy is very important among treatment of spare parts outline, it does not need to change program and cutting tool the treatment of achievable outline. CNC Milling CNC Machining