Re: [CAD_CAM_EDM_DRO] EMC and Rounded Corners

Terry here's the info from the NIST site here

http://www.isd.mel.nist.gov/personnel/kramer/pubs/RS274NGC_3.web/RS274NGC_33
a.html#1013869

and

http://www.isd.mel.nist.gov/personnel/kramer/pubs/RS274NGC_3.web/RS274NGC_32
a.html#1009724


2.1.2.16 Path Control Mode
The machining center may be put into any one of three path control modes:
(1) exact stop mode, (2) exact path mode, or (3) continuous mode. In exact
stop mode, the machine stops briefly at the end of each programmed move. In
exact path mode, the machine follows the programmed path as exactly as
possible, slowing or stopping if necessary at sharp corners of the path. In
continuous mode, sharp corners of the path may be rounded slightly so that
the feed rate may be kept up. See Section 3.5.14 and Section 4.3.5.3

Bill

----- Original Message -----
From: "Toddy, Terry L CUBA" <tltoddy@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, April 08, 2002 10:18 AM
Subject: [CAD_CAM_EDM_DRO] EMC and Rounded Corners


> I have my CNC plasma cutter working. I cut the first pieces last night.
All
> went pretty well for a first try with a "live" torch.... but, I programmed
> sharp corners and EMC rounded them all with about a 3/8" radius. I am
> cutting at 200 IPM with 8in/sec^2 accel. Is the rounded corners due to
slow
> accel or is it a constant contouring feature? If it is a feature how do I
> disable it? I realize the torch will burn the corners off some, but there
is
> definitely a tool path issue here.
>
> TIA
> Terry
>
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