Tap Hole, Lateral Surface Unit - HEIDENHAIN CNC PILOT 640 User Manual

smart.Turn units | Units – Drilling in C axis

Tap hole, lateral surface unit

This unit machines a tap hole on the lateral surface of the
workpiece.
Unit name: G73_Gew_Mant_C / cycle: G73
Further information: "Tapping G73", Page 376
Cycle form:
X1: Start point drill (diameter value)
X2: End point drill
CS: Spindle angle
F1: Thread pitch
B: Run-in lgth, to achieve the programmed speed and feed rate
(default: 2 * Thread pitch F1)
L: Retract length with use of floating tap holders (default: 0)
SR: Return speed (default: tapping speed)
SP: Chip breaking depth
SI: Retraction distance
Further forms:
Further information: "smart.Turn unit", Page 78
Use the Retract length for floating tap holders. The cycle
calculates a new nominal pitch on the basis of the thread depth,
the programmed pitch, and the retraction length. The nominal pitch
is somewhat smaller than the pitch of the tap. During tapping, the
tap is pulled away from the chuck by the retraction length. With this
method you can achieve higher service life from the taps.
Access to the technology database:
Machining operation: Tapping
Affected parameter: S
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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