So I understand it correctly that a wheel-cutter mode is now in
ideological development, right?
That's some great news!
On Wed, Jan 28, 2009 at 7:16 AM, Jon Elson el...@pico-systems.com wrote:
Chris Radek wrote:
On Tue, Jan 27, 2009 at 10:08:46PM -0600, Jon Elson wrote:
I think this is
Mario,
From a conceptual standpoint it is not all that difficult technically. It
just requires something in the way of a preprocessor (filter) to add the
tangential axis and introduce head lifts at the appropriate points. For
example, a head up for any G0 command, head down for any other G
Mario. wrote:
So I understand it correctly that a wheel-cutter mode is now in
ideological development, right?
That's some great news!
After some discussion, it seems the consensus is that there is rather
little development to be done.
The C axis (for cutter angle) will just be another axis
Please, make a setting and planning of the C axis, so that some wheel
heads can do infinite number of turns and some will be limited to a
specific amount of degrees which can turn CW or CCW. (some cabling,
maybe on ultrasonic (cutter, welder) heads).
Also, in case of pizza wheel, preset diameter
Hi all,
I am looking at doing a retrofit on an XY table with a tangential ultrasonic
knife. There are several issues to address, and my current thoughts on how
to address them are presented below. Any better ideas, easier ways of doing
it, something already implemented which I have missed, or
I'm still reading and thinking about your control concept, also
because we made some reasoning previosly that this control concept
would be useful for a cutter table with a cutting wheel as a cheaper
replacement for laser shape-cutting. It never left the stage of being
a nice idea, but I see you
Sebastian, Chris,
I considered that, and maybe I am missing something, but I see how to do
that for G1 commands, G0 doesn't matter, but I don't see how to do it for G2
/ G3 commands.
Never mind, I see. I completely missed the fact that G2 / G3 had the
capability to synch with a rotational
Mario,
Yea, a pizza wheel cutter is very much the same concept. The one nice
feature the old software has is that the knife has two edges so the software
would track the distance cut on one edge, then after a defined distance
(usually a couple thousand inches) would rotate the knife 180 degrees
Sebastian,
If you treat the knife rotation as a proper axis (controlled by the emc2
motion planner), then you'd program the angle along with the rest of your
G-code.
I considered that, and maybe I am missing something, but I see how to do
that for G1 commands, G0 doesn't matter, but I don't
I'll sum the requirement:
Basically, all we want is to hook planner internal variable into axis output.
planner_heading_in_XY_plane axis_A | filter possible angle limits
The main obstacle here:
Is the heading angle at current point tappable at current EMC2 version?
On Tue, Jan 27, 2009 at 9:33
Mario,
My approach is to pre-process the G-Code file to insert the necessary head
lifts. For G0 commands, nothing need be done since the head will always be
in the up position for a G0 move. For G1 commands use arctan2(Y2 - Y1, X2 -
X1) to calculate the angle between two vectors, where Y1 and X1
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