Use the Thread Options dialog to specify additional settings for threading cycles.
To display the Thread Options dialog, click the Thread Options button on the Profile Group Parameters, Turn dialog when working with a threading cycle.
Complete the Thread Options dialog as follows:
Constant infeed / Custom threads — When this option is selected, threads are cut at constant infeed until the specified minimum is reached.
Variable infeed based on pitch — When this option is selected, threads are cut at a variable infeed until the specified minimum is reached. PartMaker calculates the number of threading passes based on the pitch, as entered in the Pitch field on the Profile Group Parameters, Turn dialog, and displays this number in the No passes field.
Variable infeed, user-defined No. Passes — When this options is selected, threads are cut at variable infeed until the specified minimum is reached. Specify the number of passes required in the No. passes field. PartMaker uses this value to calculate the depth of every pass.
Variable infeed based on constant volume — When this option is selected, threads are cut at variable infeed until the specified minimum is reached. PartMaker calculates the number of threading passes required to maintain a constant volume of material removal on every pass.
Number of Spring Passes — Specify the number of finishing (spring) passes to be made at the end of a threading cycle.
Finishing Allowance — For use with canned cycles only.
Number of Threads for Multi-thread — Specifies the number of thread cuts for a multi-start thread.
- If you enter 0 or 1, only one thread is cut.
- If you enter a value of 2 or higher, the specified number of threads are cut, with each thread's starting point translated by a fraction of the pitch from the previous thread's starting point. This fraction is defined by Thread Pitch / Number of Threads for Multi-Thread.
For example: For a 3 Start Thread with a pitch of .125in, the second thread starts at .042in (.125 / 3) away from the first thread starting point. The third thread starts at .042in away from the second thread starting point.
Lead variation rate — For use with canned cycles only.