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A really fast Gecko
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Hi,
Cross-posted from the geckodrive group. I thought people here might be interested in it. -------------------------------------- I uploaded a short video that has an axis tooling along at 3,932 IPM. Please go to: Then pick 3900IPM.avi. Please download and save; view it from your hard drive instead of selecting "open". This will save on bandwidth and not irritate our webmaster.:-) Video: 16 seconds, 1.234MB, 720 X 480 format, encoded using DivX 6.0, no audio; had to remove it because I swore when I nearly got nicked by the axis. The average velocity is 51.4"/sec if accel/decel is included. The velocity 65.535"/sec after accel, before decel. The motor is an MCG IH230014 run in parallel at 3A/phase, 24VDC supply, PID closed-loop on the G100 driving a stock-standard G201. The distance in each direction is 20.000" Motor speed is 3,932.10 RPM, screw is 1"/turn, well oiled to keep from overheating.:-) Metric: Avg velocity: 1.306 meters/sec. (7,836mm/min) Peak velocity: 1.666 meters/sec. (10,000mm/min) Distance: 0.508 meters in each direction. I'll leave the video up one week, then I'll take it down. Enjoy. Mariss |
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Mariss Freimanis wrote:
Hi,Great stuff Mariss , but I think at least we should of got the full gory version Swearing, Blood n all! -- --------------------------------------------------------------------------- Wayne M Weedon Email: wayne@... Fdos Design Poole UK Tel +44-1202-677025 Fax +44-1202-770515 Mobile: 07774 439915 Specialists in small batch & Production Mechanical/Electrical Engineering --------------------------------------------------------------------------- |
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Not so sure you want that:-)
In the previous run I had the G201 cranked up to 75VDC; the motor develops 165W+ at that voltage. On the 1-TPI screw it developed 22lbs (10kg) thrust at 10 meters/min. It took a nice gouge out of my thumb, the kind it takes super-glue to close up and stop the bleeding. Furthermore I had a brick instead of the "action figure" as the load. The brick was duct-taped to the stage; it flew off and destroyed my PC keyboard upon the 2-G deceleration I had programmed. I decided to play it safe one bloody thumb and and new keyboard later when I ran the video. I hit the mouse key to start things and it darn near took another bite out of me. Deleted cussing ensued. Moral: Stay clear of fast-moving stuff unless you want to shed a little unplanned blood. Mariss --- In mach1mach2cnc@..., Wayne Weedon <wayne@...> wrote: might IPM.be interested in it. goryPlease go to:Great stuff Mariss , but I think at least we should of got the full version Swearing, Blood n all!------- Wayne M Weedon Email: wayne@...439915 Engineering --------------------------------------------------------------------------- |
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nattyone960
Pretty violent R&D.
--- In mach1mach2cnc@..., "Mariss Freimanis" <mariss92705@...> wrote: 22lbs (10kg) thrust at 10 meters/min.to close up and stop the bleeding.load. The brick was duct-taped to the stage; it flew off and destroyed mylater when I ran the video. I hit the mouse key to start things and itdarn near took another bite out of me. Deleted cussing ensued.full gory--version Swearing, Blood n all! ---------Wayne M Weedon Email: wayne@439915 ------- |
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It's obviously a pointless stunt as presented. At 24VDC the motor was
developing 55W and most of that energy went into accelerating and decelerating the screw. At 75VDC I was getting 2.5 meters/sec (100 IPS) but it was hurting the stage by being beyond the screw's critical RPM. No video on that because I didn't want to repeat it numerous times. What matters is the stage is going to be equipped with rate-damped compression spring loads next. This will be to test and run data on the "unstallable stepper project" algorithms for when a closed-loop stepper runs into a load beyond what it can sustain at the programmed velocity rate. This was all fun in videoing what the axis can comfortably do at moderate speeds. Next comes dealing with the adaptive algorithms which are supposed to slow the G100 down during high-speed overloads. Mariss --- In mach1mach2cnc@..., "nattyone960" <nattyone960@...> wrote: glue tomyclose up and stop the bleeding.load. 3,932PC keyboard upon the 2-G deceleration I had programmed.later --IPM.fullPlease go to:Great stuff Mariss , but I think at least we should of got thegoryversion Swearing, Blood n all! --07774-------Wayne M Weedon Email: wayne@ --439915Engineering --------- |
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art
Mariss:
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You scare me... alot!! Thanks, Art www.artofcnc.ca Videos And Support Forums Users Map: ----- Original Message -----
From: "Mariss Freimanis" <mariss92705@...> To: <mach1mach2cnc@...> Sent: Sunday, June 04, 2006 7:10 PM Subject: [mach1mach2cnc] A really fast Gecko Hi, |
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Does the Hawiian shirt protect from stray electromagnetic radiation? :)
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----- Original Message -----
From: "Mariss Freimanis" <mariss92705@...> To: <mach1mach2cnc@...> Sent: Monday, June 05, 2006 9:42 AM Subject: [mach1mach2cnc] Re: A really fast Gecko It's obviously a pointless stunt as presented. At 24VDC the motor was developing 55W and most of that energy went into accelerating and decelerating the screw. |
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art
See, I was right to be scared..:)
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Thanks, Art www.artofcnc.ca Videos And Support Forums Users Map: ----- Original Message -----
From: "Mariss Freimanis" <mariss92705@...> To: <mach1mach2cnc@...> Sent: Sunday, June 04, 2006 7:55 PM Subject: [mach1mach2cnc] Re: A really fast Gecko Not so sure you want that:-) In the previous run I had the G201 cranked up to 75VDC; the motor develops 165W+ at that voltage. On the 1-TPI screw it developed 22lbs (10kg) thrust at 10 meters/min. It took a nice gouge out of my thumb, the kind it takes super-glue to close up and stop the bleeding. Furthermore I had a brick instead of the "action figure" as the load. The brick was duct-taped to the stage; it flew off and destroyed my PC keyboard upon the 2-G deceleration I had programmed. I decided to play it safe one bloody thumb and and new keyboard later when I ran the video. I hit the mouse key to start things and it darn near took another bite out of me. Deleted cussing ensued. Moral: Stay clear of fast-moving stuff unless you want to shed a little unplanned blood. Mariss --- In mach1mach2cnc@..., Wayne Weedon <wayne@...> wrote: might IPM.be interested in it. goryPlease go to:Great stuff Mariss , but I think at least we should of got the full version Swearing, Blood n all!------- Wayne M Weedon Email: wayne@...439915 Specialists in small batch & Production Mechanical/ElectricalEngineering --------------------------------------------------------------------------- www.machsupport.com - Web site Access Yahoo! Groups Links |
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nattyone960
Well be careful, go out a buy you a set of X-Gears.... you know shin
guards, helmet, etc! I am trying to protect my selfish interests here as well. --- In mach1mach2cnc@..., "Mariss Freimanis" <mariss92705@...> wrote: was developing 55W and most of that energy went into accelerating andthat because I didn't want to repeat it numerous times.programmed velocity rate.overloads.
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Art, You called that one right...scared..are we going to have to start X-Rating
Mariss do to the Graphical Blood Letting Scenes! On Sun, 04 Jun 2006 22:34:00 -0300 art <fenerty@...> wrote: See, I was right to be scared..:) |
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--- In mach1mach2cnc@..., "Mariss Freimanis"
<mariss92705@...> wrote: on the "unstallable stepper project" algorithms for when a closed-loop stepper runs into a load beyond what it can sustain at theprogrammed velocity rate.So, once the steppers are "unstallable", the demonstration will chop off your finger rather than just gashing it, right? <G> Very impressive demo! Best, BW |
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