Home convetion
25 Jun 2015 01:06 #60113
by vre
Home convetion was created by vre
Home convention for 6040 cnc router is upper left corner?
Also axes soft limits are for
X 0 to +350mm
Y 0 to +550mm or -550mm
Z 0 to -60mm or +60mm
?
Also axes soft limits are for
X 0 to +350mm
Y 0 to +550mm or -550mm
Z 0 to -60mm or +60mm
?
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25 Jun 2015 01:26 #60114
by BigJohnT
Replied by BigJohnT on topic Home convetion
Home positions for the tool (not the table) for mill like machines is usually Z0 all the way up, X0 all the way to the left, Y0 all the way back as viewed from the front.
JT
JT
The following user(s) said Thank You: vre
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25 Jun 2015 01:37 - 25 Jun 2015 01:39 #60115
by vre
Replied by vre on topic Home convetion
And soft limits for Y and Z axes are from 0 to +N or -N ?
Also how to change orientation to visual preview of axis gui to suit actual machine ?
( how to rotate visual preview screen?)
Also how to change orientation to visual preview of axis gui to suit actual machine ?
( how to rotate visual preview screen?)
Last edit: 25 Jun 2015 01:39 by vre.
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25 Jun 2015 01:52 #60116
by BigJohnT
Replied by BigJohnT on topic Home convetion
Say you have 20 units of travel on each axis then usually:
X min limit 0 max 20
Y min limit -20 max 0
Z min limit -20 max 0.
See some info on touching off here:
gnipsel.com/linuxcnc/g-code/index.html
JT
X min limit 0 max 20
Y min limit -20 max 0
Z min limit -20 max 0.
See some info on touching off here:
gnipsel.com/linuxcnc/g-code/index.html
JT
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25 Jun 2015 02:46 - 25 Jun 2015 02:57 #60117
by vre
Replied by vre on topic Home convetion
Iam using stepconf wizard and if i give min -20 to max 0 for Y and Z
the tool point moves outside the preview frame also when home to upper left corner
the actual path is outside the frame of machine (can be crash).
If i tick invert for step-dir signals this will solve the prob?
the tool point moves outside the preview frame also when home to upper left corner
the actual path is outside the frame of machine (can be crash).
If i tick invert for step-dir signals this will solve the prob?
Last edit: 25 Jun 2015 02:57 by vre.
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25 Jun 2015 04:08 #60118
by BigJohnT
Replied by BigJohnT on topic Home convetion
Sounds like your confusing home and soft limits with touch off to material. Home positions and max/min limits define the envelope the machine can move. LinuxCNC will stay within that envelope.
Did you touch off the tool to the work as shown in my tutorial?
JT
Did you touch off the tool to the work as shown in my tutorial?
JT
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25 Jun 2015 22:47 #60130
by vre
Replied by vre on topic Home convetion
I gave in stepconf wizard for
Y min -550 max 0 and home -550
Z min -50 max 0 and home -50
and now works fine but it is difficult to work with negative numbers.
For example to go home now must give g53 x0 y-550 z-50
with previous setting i went to home with g53 x0y0z0
Y min -550 max 0 and home -550
Z min -50 max 0 and home -50
and now works fine but it is difficult to work with negative numbers.
For example to go home now must give g53 x0 y-550 z-50
with previous setting i went to home with g53 x0y0z0
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26 Jun 2015 18:42 #60155
by BigJohnT
Replied by BigJohnT on topic Home convetion
Why did you use minus numbers for home?
JT
JT
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27 Jun 2015 02:43 - 27 Jun 2015 02:47 #60170
by vre
Replied by vre on topic Home convetion
I gave in stepconf wizard for
X min 0 max 300 and home 0
Y min -550 max 0 and home 0 also inverted dir pin
Z min -50 max 0 and home 0 also inverted dir pin
and now works fine.
The key was to invert the dir pin for Y and Z axis otherwise does not work correctly
(My wiring is not inverted [A+ A- B+ B-] for Y and Z axis is straight like X axis)
X min 0 max 300 and home 0
Y min -550 max 0 and home 0 also inverted dir pin
Z min -50 max 0 and home 0 also inverted dir pin
and now works fine.
The key was to invert the dir pin for Y and Z axis otherwise does not work correctly
(My wiring is not inverted [A+ A- B+ B-] for Y and Z axis is straight like X axis)
Last edit: 27 Jun 2015 02:47 by vre.
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