Machining center milling cutter inner groove milling smaller, why the radius compensation is negative 0.3?
Center of the tool radius compensation after knife route (dotted line)Is the actual tool according to the procedure of Route 1 migration route after the tool radius(after the establishment of machine tool radius compensation automatically after the operation small offset) after small offset change big deviationThe theory of caseCan be seen from the figure, use offset radius compensation: when do the same slot cutter radius is 5 offset value is 5 line width is 40When the tool radius is 4.5 offset value is 4.5 line width is 41?The actual processing program does not change, the tool does not change, actual small groove. ??Let the tool offset less, will be able to widen the slot is changed, small radius compensation value
1, CNC machining center left and right cutter to distinguish: along the processing direction, the knife on the left side of the workpiece is left knife G41, if in the right side is G42.2, slot milling to increase the negative value of the reasons:When the compensation value is negative, equal to the G41 and G42 swap. For example, G3 is milling an inner circle, and the left radius of the tool radius is equal to 0.1. The right complement is 0.1, and the milled circle is 0.2 bigger than the one without the filling. If G2 is used to reverse milling an inner circle, the radius of the tool's right complement minus 0.1 is equal to 0.1 of the left complement, and the same milling circle is 0.2 larger than that without the fillingWhen an inner circle compensation is negative, the program should be milling G3, and the right milling can be done with the left compensation or the reverse G2. (reverse milling an internal circle compensation value is positive, the milling G3 with right compensation or reverse G2, with left compensation to circle milling. )
The value after processing -0.3 will be 0.6 larger than the inside diameter
