5238-E P-156SECTION 7 FIXED CYCLES8-16. Repeat FunctionWhen cutting equally spaced holes, the use of the repeat function simplifies programmingLE33013R0300900460001The repeat function allows repeated designation in two blocks.Note that the repeat function is effective for G178, G179 and G181 through G184 and G189, G190cycles.• When no Q word is specified or Q 0 is specified, the control regards the designation as "Q 1 ".• The fixed cycle command associated with the Q word is effective only in one block. Be sure tospecify G180 in the block following such a block.LE33013R0300900460002• When a Q command is specified, positioning in intervals of 360/Q is executed automaticallyfrom the commanded C position.8-17. Tool Relieving Command in Deep-hole Drilling Cycle for Chip Dis-charge.As explained before, in deep-hole drilling cycle (G183), the use of D and E codes executes stepfeed and breaks the chips in which the drill will otherwise tend to get entangled. In addition to this, itis possible to program drilling with discharge of chips outside the hole being drilled.To execute a drilling with chip discharge command in a fixed cycle program, program a block ofcommands like that shown below.LE33013R0300900470001L: Infeed amount (as a diameter ) for tool relieving motionWhen an L** command is programmed in a deep-hole drilling cycle, peck feeding is repeateduntil the total infeed amount reaches "L" and then the drill returns to the cycle start point atthe rapid traverse. The drill is then positioned to a point -α mm (*) away from (above) thedepth of the previous cut at the rapid traverse rate; the programmed drilling cycles isrepeated until the commanded X (Z) value is reached.The value set at Pecking amount in drilling cycle of optional parameter (MULTIPLEMACHINING) is used for "α".Specify the number of holesto be drilled.G183G180X40 Z80 C0 I46 D10 E1 F40 Q6G181G180X100X80 C90Z150 C30 I46 E1 Q4:The commands in this block cannot be given.**G183 X40 Z80 C0 146 D10 E1 F40 L50
