2 - 60 Conversational Part Programming v546CO WinMax Lathe Conversational Part Programming
• TAP CYCLE—This field appears when the tool is a Tap. Select Standard or
Rigid.
• Standard cuts threads inside a hole.
• Rigid taps the same hole multiple times, maintaining the tool’s
orientation with previously cut threads.
• DWELL TIME—This field appears when ether Dwell or Center Drill is selected
for the Cycle Type or when Standard is selected for the Tap Cycle Type. After
the cycle reaches Z Bottom, the Z axis will dwell for the time specified in
seconds before retracting at Rapid.
• PITCH—This field appears when the tool is a Tap. Contains the value for
threads between metric taps.
• TPI—This field appears when the tool is a Tap measured in inches. Contains
the value for the threads per inch for inch taps.
• PECK DEPTH—This field appears when either Peck or Chip Breaker is
selected for the Cycle Type, or when Rigid is selected for the Tap Cycle Type
and Tap is the tool. Peck depth is the maximum depth to be cut in one pass.
• FIRST PECK DEPTH—This field appears when either Decr Depth or Decr Chp
Bkr is selected for the Cycle Type. First Peck Depth is the maximum depth to
be cut in the first pass.
• MINIMUM PECK DEPTH—This field appears when either Decr Depth or Decr
Chp Bkr is selected for the Cycle Type. Minimum Peck Depth is the smallest
peck depth that can be cut in the current cycle. The minimum peck depth for
decreasing depth holes is 0.003 mm (0.0001 in). This field is used in
conjunction with the Peck Percent field to allow the peck depth to reach Z
Bottom. A Minimum Peck Depth must be set in order for the tool to reach Z
Bottom.
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.
When you enter a value for TPI, the control calculates the value for
PITCH. Conversely, When you enter a value for PITCH, the control
calculates the value for TPI for tools measured in inches.
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