MasterCam Lathe X2, turning screw tip

[b_bengineer]

Hi Guys, has anyone had any luck turning a screw tip on a part using MasterCam Lathe X2. I'm looking to build a "medical" part that has a tip like a wood screw (progressively smaller tip). I don't see this option in the MasterCam menu? I'm trying to come up with a creative way to cheat a canned threading cycle, like for a pipe thread but thought I'd post here first. Thanks in advance for any help.............

[gcode]

There is a setting called taper angle on the thread shape page.

[Philcott]

As gcode said you could use the taper angle (R value in canned cycle) to cut the tapered tip but the problem will be continuing along with the thread parallel to the center line of the part.

 

You might try cutting the tapered tip and then program the straight part of thread and try to synchronize the alignment of the threads by adjusting the start position of the straight thread. This will change the orientation of the mating position of the threads. An adjustment of 1/4 of the thread pitch will move the orientation 90 degrees.

 

This process will give you a thread with a tip of one angle and the body of the thread at a different angle.

 

I'm not sure if this is what you want but it might help.

[chip]

I work on a Haas SL20. In the cannedcycle there is a code for taper angle. G84 X Z D K F I (I is taper angle). You could run a taper angle for the tip, then run the thread canned cycle for the thread. It should match.

[chip]

Some of those screw machines that run on a cam make this happen in one swoop.