Scrolls (face threading)

[tblough]

With a spindle encoder, is specifying feedrate in feed/rev accurate enough to create a scroll? I know for threading cycles the feedrate is synced to the actual spindle speed and the start occurs on the index. Is there any way to get this same behavior for generating a scroll?

[cnc_smith]

Tom,

If you are doing only a single pass yes it will work. If you need to do more than one pass to get to depth you can use the G32 or the G92. I would recommend the G92 because this will start at the clearance position and return to it. Then program another G92 with a deeper Z depth. The manual only shows cutting in the z direction, but works for doing the scroll cuts in the X direction also.

If have attached an example program.

Face thread scroll G92.cnc

(88 Bytes) Downloaded 129 times

Dana

[tblough]

Interesting! Thanks Dana. I didn't realize that the threading cycles would work in the X direction. I give it a try.