Reply with Quotetpi value is 5.
Is it possible above 200 ipm with 5 tpi with a stepper system.
less than 10 IPM (4.2mm/s)
10-50 IPM (4.2 - 21 mm/s)
50-100 IPM (21-42 mm/s)
100 - 300 IPM (42 - 127 mm/s)
300 - 600 IPM (127 - 254 mm/s
faster than 600 IPM (254 mm/s)
May I learn your motor type, driver model, TPI value of screw and power supply voltage if your machine IPM value bigger than 600.
tpi value is 5.
Is it possible above 200 ipm with 5 tpi with a stepper system.
My servo system rapids at 1200+ IPM, tell me if I'm bragging, lol.
"A Helicopter Hovers Above The Ground, Kind Of Like A Brick Doesn't"
Greetings From Down Under
Dave Drain
Akela Australia Pty. Ltd.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I've run conversational b-ports for years. Most all of them rapid at 100 ipm. When I built my CNC, I figured in that range would be good. It's a good thing to, as the steppers were less powerful than described...
Not a home made Machine but scary fast
1800 ipm feed XYZ and 3200 ipm rapid travers XYZ.
I dont know are there the cipm definition? Else I make up.
cipm = circular inch per minute
Forexample
Radius 10 inch. Full arc length is 2* 3.14 *10 = 62.8inh
If your machine draw this circle in the 2 minute cipm value is 62.8/2 = 31.4
Really I want to know how fast is your machine? Can you say cipm value of your machine?
Hi , Here is some pictures of my machine
http://www.cncstory.com/
my router speed is jog 450 ipm
My Router Page
http://www.cncstory.com
On my CNC router I can run X at 50, I can only get Y to 40 & Z to 35. But I keep them all at 35 for more reliability.
People Need To Remember Rapid Speed And Speed You Are Actually Cutting ,is 2 Diffrent Things ,pc Retrofits With External Dsp Or Pulse Generators,geckodrive G100 (what I Use)galil,delta Tau Etc,
You Will Genrally Max Out You Motor Speed Before Pulse Train,servodrives Etc,most Retrofits Dont Have Enough Spindle Rpm On Old Machines To Cut Real Fast,mine Will Do 300ipm Scary Fast On Kneemill With 24 In X 14 In Y.i Usually Leave At 150
x restricting y speed?
My x axis is my limiting factor @ 150 IPM. This is due to the weight of my gantry, and the 6 foot long, 5/8th's inch ballscrew wanting to whip. The y carriage is much lighter, and can handle 220 IPM or so, but I am limited by step pulse with Mach 3.
With Rhino/Rhinocam, I set my Parallel Finishing routine to 90 degrees, and then set the Y speed to 120 IPM. I set this speed so that I do not lose any detail as the Z axis struggles to keep up (looks like a sowing machine sometimes!) The slower "X" axis is therefore not a factor as far as how fast I can machine. The other cutting routines are done much slower, just for spindle power/ bit breakage reasons.
Sanhera,
You wanted to see a machine that does 600+IPM....
Mine does 1500+IPM, designed for foam shaping, it employs electronic encoder gearing to overcome parallel port limitations, I'm using Mach 3, pix are on my ebay auction link now.... http://cgi.ebay.com/ws/eBayISAPI.dll...7790&rd=1&rd=1
Great replies, I'm hoping to finish building my router this summer I would like some of you guys to post videos much appreciated
top tech mill conversion
I have a bench mill that i have converted using gecko 320's and reliance S243's the a axis has a 10mm lead ball screw that i had belted to 3.4:1. the X-axis could easily run to 300 ipm after tuning but was lacking some in the torque area. the z-axis i had at 2:1 with 0.200" lead ball screw, it will move well at about 150ipm but needs more torque as well. all that said i am re-belting everything which will slow it to the 100-150 ipm range.
Danny
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Currently I rapid at 1200ipm it could probably go faster, for cutting i can do 600ipm but i usually cut acrylic at 400ipm
http://www.cnczone.com/forums/showthread.php?t=37267
MY G00 = 135 FOR X AND Y AND G00=100 FOR Z
On my little Cutty Shark router, I usually cut 3/16" lexan 1/16" deep and through cuts. I can cut straight cuts @ 150 IPM. Can set the rapids to 300, but set @ 200. I have to slow doen on tight curves to 80 IPM. 2 cuts gets me through the lexan using a PC 690 router, Thompson single nut ball screws, roller skate bearings on X and Y. Little THK RSR 12's on the Z. 425 oz 23's and 3 Gecko 203V's running on a 62 VDC 6 amp lab power supply and an IBM Thinkpad laptop.
I cut steel and aluminum on my mill. Steel sheet, I can run coated cheap EM's @ 6600 RPM feeding 25 IPM with .025 DOC. I use Koolmist 77 and a cheap HF solvent tank for the coolant system.
I can cut 6061 aluminum with a 3 flute coated EM @ 50 IPM. 1/4" mill drill for engraving, spotting and edging @ about 40 for edging and 150 IPM for engraving and spotting. Same speeds in steel for this.
The mill is using THK linear rails and preloaded ground ball screws. (Thanks EBAY)
The Z axis has a ready built IKO cast iron slide with the same NSK ground ball screws.
495 oz Keling motors withe 3 Gecko 203V's running off a Keling 72 VDC 12 amp PS.
It has an X2 R8 spindle running off a 2.5 HP treadmill motor.
I am very happy with both of these.
My little 7/12 conversion works well too, but not as strong as these two. Smaller motors, smaller PS and stock screws so far. I have another treadmill motor fotr it. Then I will be able to up the speeds. Right now I often stall the OEM motor. Undesireable anytime, but especially so for cnc.
Lee
i keep mine set at 500 ipm , this is an old test vid from the developement stages , routers been replaced and a number of mods done but overall table performance is the same , lately ive been testing aluminum pocketing at 500 ipm the depth of cut is only .015" but it doesnt take long to cut a 6"x6" thru 3/8 plate with a 1/2 endmill , its neat to watch , the load on the tool is basically nothing , normally i'll cut it at .05 depth at 50ipm ,
what the heck sometimes its fun just making pointless holes
"http://www.youtube.com/watch?v=qPFA0qpnonc"]YouTube - homemade cnc router test run
A poet knows no boundary yet he is bound to the boundaries of ones own mind !! ........
My selfmade gantry mill: X-1000mm, Y - 400mm, Z-180mm, all Aluminium,
Hiwin 15mm rails, 4 cars per axle, 16/5mm ballscrews, Closed Loop Servo Kit-4 www.imsrv.com, max speed up to 350 ipm ...
Selfmade high speed spindle http://www.cnczone.com/forums/showth...t=12184&page=5 ... Coolant ... I use cooland every time - alu, carbon, plastics ...
Very different cutting speeds, depends what Im doing, what material ...
Mostly I cut 4, 5 and 6mm 7075 sheet then 1/16" 2 flute endmill (1,6mm) , spindle ca 30.0000 RPM, then 200...300 mm per minut , ca 1,8mm deep ...
Too slow? For me its normal.
Herbert
