I like to set my WOC to about 5% of the threadmill’s cutting diameter (e.g.019″ for a.
However, you may need to utilize repeat passes or adjust your PDO out to account for tool deflection and ensure a proper fit. Cutting 60% of your thread on the first pass (30% of your PDO) and 40% on your final pass (20% of your PDO) eliminates the need for many quick, light passes. Since the profile of the thread is triangular, each pass is removing more material than the last so staggering passes is critical. Splitting the cut into two passes can be beneficial as well.However, more passes can dull the teeth of the threadmill more quickly over time. Taking shallow, quick passes is relatively low-strain on your tool and can cut down on tool deflection.
In the end, nothing is better than testing what works best for you.
N1265 X1.9243 Y-0.5768 Z0.753 I-0.085 J0.When it comes to choosing a radial DOC and number of passes for your thread, there are a few common schools of thought. Here is Gcode for a fanuc 18i-mb using staggered tooth SCT threadmills.
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