Helical Interpolation

[eliot15]

Here's a chunk of code that helically interpolates in incremental mode in a sub program. I like doing it this way on the fly:

%
:1
G17G40G80
T1
M100
(.312 END MILL)
G90G0G54X0.Y.625
S3500M3
G43Z1.H1T2
G1Z.007F50.
M8
G41X-.1295D1F15. (0.563(.571) DIA.)
M98P2L46
G40G0X.1295
G90G0Z1.
M101
G28Y0.
M30
:2 (DEPTH 0.315)
G91
G3I.1295Z-.007
M99
%

It gives me a nice clean helix consisting of nothing more than Z steps, like this (NCPlot screen capture):



How can I generate a nice clean helix like this in GibbsCAM using the Roughing function. All the options seem to want to switch back to absolute mode and insert a circular interpolation on every step, or something similarly complicated. I end up with helixes that looks like this (Auto, Helix end at SP):



Thats some weird looking code. I just want a simple helix.

Thanks

[Species8472]

Make a simple circular path with the "Z" step you want then go to Plug-Ins>HSM>Z-Ramp Contour. You will get one lead-in and one lead out and zramp the rest.

[eliot15]

Thats it. Perfect. Thanks

[cadman]

Helix Bore plugin.

[canyon289]

If I'm boring a large hole, say 4 inches, with a small endmill, 1/4 inch, if I used this helix bore there will be a large chunk of metal left in the bore that will intefere with cutting.

Is there a way to have it start in the middle of the circle and helix out, same functionality as is provided for the G12 and G13 commands on Haas machines.

Here's a video of the operation.

HAAS G12/G13 - YouTube

HAAS G12/G13 - YouTube

[cadman]

Originally Posted by canyon289 If I'm boring a large hole, say 4 inches, with a small endmill, 1/4 inch, if I used this helix bore there will be a large chunk of metal left in the bore that will intefere with cutting. Is there a way to have it start in the middle of the circle and helix out, same functionality as is provided for the G12 and G13 commands on Haas machines. Here's a video of the operation. HAAS G12/G13 - YouTube

The Helix Bore plugin is for making helical bores, not pocketing.

The standard Roughing process lets you make helical entries with 5 options on placement, three of them with user defined diameters, and 4 options on how to engage the material.

In addition to user defined helical entries, the Advance 3D Pocketing has more options for toolpath control.

[Erikir]

oops, delete me.