Thread Mill Programming

Internal Threads (climb milling)

The simplest method to produce a thread form using an Advent Thread Mill is as follows:

1. With the center of the hole being the X-Y zero point, move the cutter to the center of the hole, then to the thread depth required.
2. Move the cutter over a small distance (usually about .02" towards the three-o'clock position) to call up your cutter compensation.
3. Machine in a counter-clockwise (climb milling) direction generating a 1/2 circle and ending at the full thread depth at the nine-o'clock position. Simultaneously move 1/2 pitch in the Z direction. The direction of the Z movement will determine the handedness of the thread.
4. Produce your thread by generating 1 full circle (counter-clockwise) around the center, while moving 1 full pitch in the Z direction.
5. After the full form has been machined, return to your starting position near the center of the hole. This is done by generating another 1/2 circle (counter-clockwise) combined with 1/2 pitch move in the Z direction.
6. Return to your hole center, and exit the hole.

Programming Software

Advent Tool understands our customers' constant need to update their CNC machinery with accurate programming calculations. The full Thread Mill software, designed for ease-of-use on your support equipment, is FREE to Advent customers. For more information visit our DOWNLOADS section.