HEIDENHAIN MANUALplus 4110 - Manual (Page 122)

122 4 Cycle Programming
4.4 Roughing Cy
cles
Cycle run
1 Calculate the proportioning of cuts (infeed).
2 Approach workpiece on paraxial path for first pass from X, Z.
3 For sloping contours, plunge into the material at reduced feed rate.
4 Machine the workpiece according to the calculated proportioning
of cuts.
5 Depending on algebraic sign of P:
„ P>0: Machine contour outline.
„ P<0: Retract by the safety clearance at 45°.
6 Return and approach for next pass.
7 Repeat 3 to 6 until the defined area has been machined.
8 Return to starting point on paraxial path.
„ The steeper the tool plunges into the material, the
greater the feed rate decrease (max. 50%).
„ Pay attention to the dimensions of facing tools (see
“Facing tools” on page 419).