CAD CAM EDM DRO - Yahoo Group Archive

Re: Radius Compensation---Leadin

Posted by Fred Smith
on 2001-07-25 14:47:57 UTC
--- In CAD_CAM_EDM_DRO@y..., "Art Fenerty" <fenerty@h...> wrote:
> Hi all:
>
> Can someone explain Lead-in's on radius compensation.

> G42D1
> X10Y0
> X10Y10
> X0Y10
> X0Y0 What would be my leadin values after G42D1.

Your program should be more like this:

N9 G00 X5. Y-10. Z0.
N10 G41 D1 G01 X7.8491 Y-4.5326
N11 G03 X5.1 Y0. I5.1 J-3.1
N12 G01 X0.
N13 G01 Y10.
N14 G01 X10.
N15 G01 Y0.
N16 G01 X5.
N17 G01 X4.9
N18 G03 X2.1509 Y-4.5326 I4.9 J-3.1
N19 G40 G01 X5. Y-10.

This was automatically generated in Vector-cam with a teardrop
approach/depart. It climb mills around the outside of the 10x10
contour. The cut starts at X=5 Y=-10, makes a straight cut greater
than the radius of the cutter, arcs into the cut with a radius of 3.1
which is greater than the cutter radius, climb-cuts around the
contour, arcs away from the shape after overlapping about .2 mm from
the start point of cutting on the contour, then makes a straight move
back to the start position while turning off cutter comp with G40.

Hope that is helpful.

Best Regards,

Fred Smith
IMService

P.S. I still disagree technically with the authors of EMC that the D
call out should be required at the same time as the G41. It's call
out should be done at tool change time and remain in effect modally
whenever a G41 or G42 is encountered. Very sloppy IMHO.

Discussion Thread

Art Fenerty 2001-07-25 14:18:21 UTC Radius Compensation---Leadin Fred Smith 2001-07-25 14:47:57 UTC Re: Radius Compensation---Leadin dougrasmussen@c... 2001-07-25 18:24:27 UTC Re: Radius Compensation---Leadin Art Fenerty 2001-07-25 18:54:17 UTC Re: [CAD_CAM_EDM_DRO] Re: Radius Compensation---Leadin Ward M. 2001-07-25 19:24:27 UTC RE: [CAD_CAM_EDM_DRO] Re: Radius Compensation---Leadin Jon Elson 2001-07-25 22:55:40 UTC Re: [CAD_CAM_EDM_DRO] Re: Radius Compensation---Leadin Jon Elson 2001-07-25 23:23:00 UTC Re: [CAD_CAM_EDM_DRO] Radius Compensation---Leadin Jon Elson 2001-07-25 23:25:59 UTC Re: [CAD_CAM_EDM_DRO] Re: Radius Compensation---Leadin IMService 2001-07-26 06:22:14 UTC Re: Re: Radius Compensation---Leadin dougrasmussen@c... 2001-07-26 08:26:26 UTC Re: Radius Compensation---Leadin Fred Smith 2001-07-26 08:59:40 UTC Re: Radius Compensation---Leadin Art Fenerty 2001-07-26 13:25:36 UTC Re: [CAD_CAM_EDM_DRO] Re: Radius Compensation---Leadin IMService 2001-07-26 15:03:16 UTC Re: Re: Re: Radius Compensation---Leadin