The Shop > CNC
DDCSV1.1 4 Axis controller
WeldingRod:
Will, I tested and using S24000 gives me a speed of 24000 RPM on the display.
I messed with the time-based settings but I can't get the speed to ramp up rapidly; it takes at least 3 seconds to go from zero to full speed. Frustrating for laser work...
BTW, first CNC laser with my Ox! Next up is to actually use the rotary axis; that's why the laser has the weird offset mount.
Will_D:
3 is the default value of parameter #224 "Spare enough time to the spindle response"
Try setting to say 0.5 or whatever your laser needs to get to full power. Probably 0 would be ok. Range is 0 to 100 seconds
HTH Will!!
WeldingRod:
--- Quote from: Will_D on February 23, 2018, 06:34:04 PM ---3 is the default value of parameter #224 "Spare enough time to the spindle response"
Try setting to say 0.5 or whatever your laser needs to get to full power. Probably 0 would be ok. Range is 0 to 100 seconds
HTH Will!!
--- End quote ---
Will,
My #224 is called "spindle M3/M4/M5 command duration, and I have it set for 0.01 seconds.
It still takes about 5 seconds to ramp up the PWM.
Being unable to either set a specific angular max speed or a really slow feed is driving me nuts right now. I have to set the manual feed rate percentage to 40% to get things slow enough for the rotary to work.
Despite all that, I AM laser tube cutting (or almost cutting through)! Trying.for a sawtooth... lots of restarts, ran to fast for the rotary, etc.
Sent from my SAMSUNG-SM-G891A using Tapatalk
WeldingRod:
Good news: I AM laser tube cutting on my Ox, under DDCSV control!
I have found that parameter #433 controls the PWM ramp up rate. 0 is turn on instantly (on the screen at least). 65535 is the other extreme and that is about a 35 second ramp from zero to full.
on the "scream" side:
When I set the parameters to "spindle speed controlled by G-Code" I'm getting weird stuff. When I put M3 and S24000 in my code, I see 24000 on the right hand side of the S area of the display, but zero on the left side (BTW, 24,000 RPM is the maximum in my parameters). The M3 icon goes bold, but the laser doesn't start. I can start it manually while the program is running or when its not running. Doing this makes the left number go to 24000. FYI, I get the same behavior when I set the maximum spindle speed to 100 RPM in the parameters and issue S100. If I set the parameter to "run at the maximum speed" it starts up like you would expect, but I can't control the speed.
Any thoughts?
Also, has anyone run across a G-Code way to set the FRO to 40%? I've found that's the only way to get the speeds slow enough to allow my rotary to run (and not lose steps). Grrr.
Sanchoe:
Good day to all. I came across a very interesting fact in the controller's work. Perhaps this is only my smut, probably common. Please check on your machines. The task: to cut a pocket with a diameter of 50-80 mm to a depth of 3-5-10mm (any), or a protruding element-circle. Zero parts in the center, the cutter is any straight. The material is needed smooth for the purity of metering-fluoroplastic, duralumin, brass, worse-wood. After milling, remove the milling cutter and install the fish indicator (with the angle of inclination of the foot) in the spindle. The knife rest on the end face of the treatment so that when rotating it tracks the machined end along the entire diameter and without hurrying to turn the spindle by hand 360 degrees. My result-machine mills a circle with a displacement from its center of the detail at a distance of X -0.09mm, Y +0.266. The displacement was established by moving the axes towards a uniform indication of the indicator. After that, I make a file in the artkam and deliberately shift the circle to this distance from the center, milling, measure-reading in the center. The result is natural. Pulses along the axes are exposed in km, coordination is adjusted by acceleration, the repetition is not worse than 0,01 mm. Orthogonality is not worse than 0,02 mm by 200 mm. There are no questions on mechanics. Colleagues, the whole test will take 15-20 minutes, can someone already encountered and knows what to treat?
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