Dual bipod winch foam cutter
- bvandiepenbos
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I have built a winch type foam cutter and having EMC configuration problems.
I used the "hotwinch" files from the german fellow here...
code.google.com/p/emc2hotwinch/w/list
I can jog each of the 4 winch motors independently but gcode X Y moves don't move all in snyc to make moves.
I am pretty sure the .hal and .ini files are edited correctly for my pinout.
I think I have kinematics file in the right place.
Any ideas what is wrong?
~*Brian
kinematics file is in /usr/realtime-2.6.32-122-rtai/modules/emc2/dualbipod.ko
here is the guys website www.cnc-hotwire.de/
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- bvandiepenbos
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- bvandiepenbos
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- bvandiepenbos
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is your power supply capable of supplying all the current needed for 4 steppers at the same time , and is your stepper motor wireing heavy enough , are all the steppers tuned and configured the same .
can you explain more in detail as to what results you are achieving .
i would look more at a hardware problem or stepper tuning
can you give more information on your hardware setup
and we can see if we can pin it down
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I can jog each of the 4 winch motors independently but gcode X Y moves don't move all in snyc to make moves.
I am not sure if you have to manually switch to WORLD mode coordinated moves. (Press $, or in the Machine menu, I think)
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- bvandiepenbos
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now I can mdi move all...
"right" side bipod is X & Y
"left" side bipod is U & V
Guess that means my g-code will be special...
command X & U together and Y & V together.?
now I need to get steppers tuned, how is best way to do that?
the current settings don't move motors smoothly or nearly fast enough.
motor specs say to use around 1000 pps
so what values should I use for time, space, hold and setup?
4 wire bipolar motors, .8amp/phase
Driver board is a 4axis TB6560 from China (yuk... I am sorry I bought it, docs are crap)
Board can microstep 1, 1/2, 1/8, 1/16 what should I use?
1 revolution of the winch is 1.0" of cable
power supply is 24volts 15amps
Thank you.
~*Brian
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now I need to get steppers tuned
…
motor specs say to use around 1000 pps
so what values should I use for time, space, hold and setup?
Steppers don't normally need tuning, they ought to just work.
You can't really get step timing information from the pulse rate, that is governed by the driver not the motor.
However, you can say that 1000pps and 200ppr = 5rps, = 3000rpm = 3000 in/min
That seems very fast indeed for a 0.8A motor. In fact I don't know of any machines that move that fast, even with servos. I suspect that you probably have the axis velocity set much higher than the motors can manage, 1000pps is probably the speed at which the motor torque is effectively zero.
You have a 15A supply and 4 channels of 2.5A drive, so at least it would be easy to upsize the motors if they prove inadequate.
The best docs are from Toshiba for the driver itself.Driver board is a 4axis TB6560 from China (yuk... I am sorry I bought it, docs are crap)
www.semicon.toshiba.co.jp/docs/datasheet...datasheet_110118.pdf
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- bvandiepenbos
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bvandiepenbos wrote:
now I need to get steppers tuned
…
motor specs say to use around 1000 pps
so what values should I use for time, space, hold and setup?
Steppers don't normally need tuning, they ought to just work.
You can't really get step timing information from the pulse rate, that is governed by the driver not the motor.
However, you can say that 1000pps and 200ppr = 5rps, = 3000rpm = 3000 in/min
sorry, but ya lost me here?
~*Brian
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(It seems I lost myself too)
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