M: Cutter rotation (3=clockwise, 4=anti-clockwise)Ĭutter compensation provides the user with the ability to adjust the tool path for variations in tool cutter diameter.įirst, when programming by hand, without the aid of CAM (Computer Aided Manufacturing) software, it is much easier to program the actual part dimensions, part line programming.G40: Cutter radius compensation de-active.G42: Cutter radius compensation activation (right hand side movement) Conventional.G41: Cutter radius compensation activation (left hand side movement) Climb.*Bonus did you know: The terminology used with Dimensional Tool Offsets remains universal between controllers. Notice the importance of programming valid entry and exit move The behavior of the machining system when cutter radius compensation is ON is described in the chapter of Cutter Compensation. ¨ cutter radius compensation is commanded to turn on when it is already on. ¨ the D number is not an integer, is negative or is larger than the number of carousel slots, This will override the value of the diameter of the tool (if any) given in the current tool table entry. G41 and G42 can be qualified by a P-word.It is OK for the D number to be zero a radius value of zero will be used.

If used, the D number should normally be the slot number of the tool in the spindle, although this is not required. The D word is optional if there is no D word, the radius of the tool currently in the spindle will be used. To turn cutter radius compensation on right (i.e., the cutter stays to the right of the programmed path when the tool radius is positive), program G42 D~.To turn cutter radius compensation on left (i.e., the cutter stays to the left of the programmed path when the tool radius is positive), program G41 D~.Cutter radius compensation may be performed only if the XY-plane is active.To turn cutter radius compensation off, program G40 (It is OK to turn compensation off when it is already off).

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