Machsupport Forum
General CNC Chat => Building or Buying a Wood routing table.. Beginnners guide.. => Topic started by: Thombus on January 10, 2019, 08:18:27 AM
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Hi,
I did read a lot on the forum, in Manuals and did a lot of trial and mostly error. but did not find some about this settings ...
Mi machine bed is 940mm x 998mm so i did set so in motorHome/softLimits (see atachement) but have a little doubt if i did good.
Please let me know if i did this the rightway and if not, how to
Thomss
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Hi,
yes you have set that correctly.
Note that Soft Limits are effective ONLY if the machine is referenced (homed). I don't mean just the DROs zeroed out,
but the machine coordinates must be referenced to a particular location EVERY session of Mach. That almost
invariably means home switches. Do you have home switches setup?
Craig
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Yes, i did mounted 3 mechanical microswitches, for ever Axis 1.
The function but not jet configured the right way i think. The ++ and -- and the home possibilities in the ports and pins / input signals, made me read the manual over and over, (as far as my English could bring me in understanding) but still i do not understand the difference
Thomss
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have a look here:
https://www.machsupport.com/wp-content/uploads/2013/02/Mach3Mill_Install_Config.pdf
capter 4.5 is a very good start.
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have a look here:
as i said in the beginning, That is what i did read the last period. also, English is not my daily language to understand this fully..
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so what is the Problem?
would German be easier for you?
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I recently asked for a function in MachX to set the type of motion for any axis, moving-tool or moving-work but got nothing. A "normal" configuration is assumed, but gives no allowance for different machines.
So. Does X axis move the tool or move the work? Moving tool means left is Zero, --, and Home. Right is + and ++. Moving work means right is Zero, --, and Home. Left is + and ++.
Does Y axis move the tool or move the work? Moving tool means to the front is Zero, --, and Home. Moving work means Front is Home, +, and ++. To the back is - and --.
Z axis is usually moving tool, so Up means Home, + and ++, and Down means - and --.
In general, ++ means + end Limit switch, -- means - end Limit switch.
- and + are for coordinate system and DRO increment, which makes the tool-path display orientation correct. X increment to the right, Y increment to the rear, and Z increment upward.
If I have stated this incorrectly, please correct it.
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does not matter wether the tool or the material is moving
allways
Y+
|
X- --- X+
|
Y-
you have allways to Looks where your tool goes on the surface of material (bird view).
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So. Does X axis move the tool or move the work? Moving tool means left is Zero, --, and Home. Right is + and ++. Moving work means right is Zero, --, and Home. Left is + and ++.
Does Y axis move the tool or move the work? Moving tool means to the front is Zero, --, and Home. Moving work means Front is Home, +, and ++. To the back is - and --.
Z axis is usually moving tool, so Up means Home, + and ++, and Down means - and --.
In general, ++ means + end Limit switch, -- means - end Limit switch.
- and + are for coordinate system and DRO increment, which makes the tool-path display orientation correct. X increment to the right, Y increment to the rear, and Z increment upward.
all correct
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so what is the Problem?
would German be easier for you?
It is not the language it self, merely the way of writing, understanding and remember this all.
as i told before (somewhere) I am a absolute beginner, Have some problem with words and abbreviations
There is so much information, difficult to remember it all. So I have to do it Bit by Bit and a lot of questions..
Thomss
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ok i understand,
so let's try to get one Problem solved by one.
tell us the first Problem, let's get it solved, than got the next.
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Great....
I did ask about the settings in motorHome/softLimits. and i did got an answer.
But ar those settings in MM, CM, or machine units.
The reason why i ask is':
In the settings as shown below, if i load a pre-made gcode like Roadrunner, all seems to be well.
but when i load an self-made gcode (vectric) the sizes will be not as planed.
and when i jog on the X axis the full length of my waste board (790mm) it wil go only 1/4th on the screen,
where do i go wrong ...
Thomas
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Hi Thomas,
Could you run the Calibration Procedure (Settings page - Set Steps per Unit) and see if you have your units set correctly.
Tweakie.
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i did already so (forgot to mention)
25 cm in the test is 25 cm as respond.. and i did this test On the X, Y (A) en Z axis, repeatedly and no difference.
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Perhaps you have done something wrong in the Calibration routine because if you jog 790mm then the screen DRO will read 790.0000 (assuming it started at 0.0000)
Tweakie.
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What i did til now:
open tab: Settings
above the reset button set steps per unit.
use the X-axis.
on the question "how far would you like to move the X axis" i did fil in 25
with the settings as i did, the axis moves exactly 25cm
on the following question i did answer yes.
I repeated this with different lengths as in X as in Y.
Can the G-code actually change the size of my board ???
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Aha, you calibrated in CENTIMETERS, should be in MILIMETERS!!
"How fas would to move X axis", you should type 250. That is 25cm
So, go to motor tuning and change your steps per by dividing them by 10 (ALL AXES), and repeat, just in case, calibration procedure.
Keep in mind that you should consider all measures in MILIMETERS.
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Aha, you calibrated in CENTIMETERS, should be in MILIMETERS!!
In my vision, there are only 2 places where we can input those sizes.
1 in config and 2 in settings. On both places MM is set.
"How fas would to move X axis", you should type 250. That is 25cm
So, go to motor tuning and change your steps per by dividing them by 10 (ALL AXES), and repeat, just in case, calibration procedure.
Keep in mind that you should consider all measures in MILIMETERS.
calculation of my motortuning, 200 steps per revolution, a pulley of 20 toots and a pitch of 2mm and 1/8 micro stepping tells me 400 (if i did the right way of calculating)
But, i will, when i get home, do the motor tuning over again because, yes, what you said makes sense in my mind...
Thomass
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you can do simple test of your calibration.
- jog your X-axis to the left (minus) side
- Zero x-axis
- put a mark somewhere to measure afterwards
- put F300 into MDI
- put G1X300 into MDI
- measure the distance
the toolpath Display is an other part, important is that your values in the axis dro's
are equal to the real movement.
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now i am confused,
my motor = Nmea23 200 steps per revolution
my pulley is a 20 teeth 2mm pitch
my belt is 2mm pitch.
my driver (DQ540MA) is set to 1600pulses per revolution. (1600/200=8) to get 8 microsteps.
X-axis and Y-axis are the same setup, but the Y-axis is going way faster than the X=axis,
and i can not find a solution
What did i do wrong....
Thomass
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can you please post a screenshot of
Config->Motor Tuning -> X-axis and
Config->Motor Tuning -> Y-axis
my pulley is a 20 teeth and the second wheel ? how many teeth?
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1600 steps is 40 mm, so steps per unit is 40
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@TPS request screenshot of
Config->Motor Tuning -> X-axis and
Config->Motor Tuning -> Y-axis
i used the Prusa calculator
https://www.prusaprinters.org/calculator/ (https://www.prusaprinters.org/calculator/)
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ok from motortuning X an Y should run the same Speed.
i would put 40 for acceleration.
a bit surprises me that step pulse and dir pulse is Zero, put 5 in there.
are you using parallel port or a Motion Controller ?
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I do use A TC-50M as a controller. No centronicsport but USB
step pulse and dir pulse where advised to be Zero, I will put 5 in there.
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I do use A TC-50M as a controller.
ok had a look to the Manual, in this case i think 0 for step/dir pules is ok/does not matter.
back to the Basic Problem.
did you check the real distances as described (MDI G1Xsomething) and measure ?
same for Y axis.
anyway, if the real distances match to to the DRO's, X and Y should move the same Speed.
you can also do a simple test via MDI
G1X300Y300
should give a simulitanious move of both axis.
by rereading all the post's i recogiced that your machine is belt driven (my bad english,and the Age).
ok that means one motorrevolution is 40mm, right?
in this case your motortuning of velocity 400mm/min is very low (what actually means for the Motor 10 rev/Min).
don't realy know what Speed you expected to run?, but i think for a woodmill (have no Experience with Wood),
it is IMHO to slow.