WinMax Lathe Conversational Part Programming v546CO Conversational Part Programming 2-181
• PECK CLEARANCE—defines the location above the last peck level for
returning at rapid feed rate. This field appears when either Peck, Chip
Breaker, Decreasing Depth, or Decreasing Chip Breaker is selected for the
Cycle Type. The default is 0.254 mm (0.010 in).
Tapping Operation
These fields appear for performing tapping operations when the tool is a Live Tap:
• TAP CYCLE—accesses Standard or Rigid Tap cycle selections. This field
appears when the tool is a Tap.
• Standard cuts threads inside a hole.
• Rigid taps the same hole multiple times, maintaining the tool’s
orientation with previously cut threads.
These fields appear based on the Tap Cycle selection:
• PITCH—defines the distance between threads for metric tools. Do not use
this field for programming tools measured in threads per inch. This read-only
field, defined in Tool Setup, appears when the tool is a Live Tap.
• TPI—defines the threads per inch for tools measured in inches or the threads
per millimeter for metric tools. This read-only field, defined in Tool Setup,
appears when the tool is a Live Tap.
• DWELL TIME (SEC)—specifies the time in seconds the Z axis dwells after
the cycle reaches Z Bottom and before retracting at Rapid. This field appears
when Standard is selected for the Tap Cycle type.
• PECK DEPTH—defines the maximum depth to be cut in one pass. This field
appears when Rigid is selected for the Tap Cycle Type and the tool is a Live
Tap.
When performing rigid tapping, the hole must be longer than the
tap. To accomplish this, program the preceding drill operation to be
longer than the tap operation.
Here are some suggestions when Tapping:
• Use a floating tap holder to prevent the tap from breaking when
the spindle reverses direction.
• When tapping hard materials, use tapping fluid (not coolant) as a
lubrication.
• When tapping hard materials, use a tap drill one size larger than
normal because less thread engagement requires less torque.
• The recommended Z Start is 0.200 minimum from the part
surface to compensate for floating tap holder characteristics.
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