Lathe ... Non-G76 Threading Cycle

Non-G76 Threading Cycle

Output G76 threading cycle

The postprocessor has two types of threading output, the standard G33 single point threading and the G76 threading canned cycle. Checking this box will activate the G76 threading canned cycles.

Prep/G-Codes

Constant Lead

This field sets the numeric value associated with the preparatory code for constant lead threading (commonly G33). If this machine does not require a preparatory code for threading operations, the proper response is NR (not required). If this machine cannot perform threading operations at all, NA (not applicable) is the proper response.

Increasing Lead

This field sets the numeric value associated with the preparatory code for cutting increasing lead threads. If this machine is not capable of this type of threading, the proper response is NA (not applicable).

Decreasing Lead

This field sets the numeric value associated with the preparatory code for cutting decreasing lead threads. If this machine is not capable of this type of threading, the proper response is NA (not applicable).

Threading Register(s)

Controller uses I/K registers

If your controller uses the I and K registers for threading, you should check this box. If your controller requires only one address for threading do not check this box.

Threading address

If your controller only uses one register for threading enter it here. If two registers are required you need to use the I/K registers as your threading registers.

Set Register Format

Clicking this button will activate the Register Format Dialog that will provide the user an opportunity to set the I/K threading register addresses for the mode (Inch or Metric) under which it was activated.

Allow zero to be output in thread lead register(s)

This option provides control of conditions where a thread lead of zero would be output or suppressed. Equivalent postprocessor commands:

PLABEL/OPTION,56,TO,0 $$ Output zero in thread register (default).
PLABEL/OPTION,56,TO,1 $$ Do not output zero in thread register.

Thread lead register(s) are modal

This option provides control of output of the thread lead registers when the lead values are repetitious. Equivalent postprocessor commands:

PLABEL/OPTION,58,TO,0 $$ Thread lead registers are non-modal (default).
PLABEL/OPTION,58,TO,1 $$ Thread lead registers are modal (e.g., the register is only output when it changes).

Set Thread Lead Spec as

The postprocessor will set the specification of thread lead as either threads per inch or as actual lead (displacement per revolution). Although in the U.S. lead is often specified as TPI, in Metric it is not usually desirable to state the number of threads per millimeter. Select the proper output required by your control. Equivalent postprocessor commands:

PLABEL/OPTION,50,TO,0 $$ PITCH/t is threads per unit (default).
PLABEL/OPTION,50,TO,1 $$ PITCH/t is direct lead.

Resolution during thread mode

When the threading encoder is engaged, the programmable resolution (location of the implied decimal point) of the register containing the lead value (normally I or K) usually changes. Enter the resolution available during the thread mode. This parameter is used for rounding the lead value for maximum accuracy. Most machines accept lead to the accuracy of .00001 (inch).

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