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Re: Support

 

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Who supply the HTD pulleys? Will for sure source them ¨C the better my system works the better I am.

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I noted another issue- when doing a test in the air with this code, I noticed the spindle does not retract with enough clearance from one part to the next. And this is still in the air? I then stopped, went back to Z-Zero and it is perfect. But according to the code it is suppose to clear the 16mm board by lifting 21mm

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O0001

N10 (PROGRAM PRODUCED? - 18 FEB 15)

N20 G21 G90 (UNITS METRIC)

N30 G40 G91.1

N2140 T07 M06 H07

N2150 S18000 M03

N2160 G0 X161.35 Y1313.125

N2170 G1 G41 D17 X155. Y1273.125 Z8.5 F2000

N2180 Y1098.125 F10000

N2190 X5.

N2200 Y1448.125

N2210 X155.

N2220 Y1273.125

N2230 Y1260.425

N2240 G40 X161.35 Y1220.425 Z21.

N2250 G0 X161.35 Y1313.125

N2260 G1 G41 D17 X155. Y1273.125 Z1. F2000

N2270 Y1098.125 F10000

N2280 X5.

N2290 Y1448.125

N2300 X155.

N2310 Y1273.125

N2320 Y1260.425

N2330 G40 X161.35 Y1220.425 Z13.5

N2340 G0 X220. Y929.075

N2350 G1 G41 D17 X180. Y935.425 Z8.5 F2000

N2360 X5. F10000

N2370 Y1085.425

N2380 X355.

N2390 Y935.425

N2400 X180.

N2410 X167.3

N2420 G40 X127.3 Y929.075 Z21.

N2430 G0 X220. Y929.075

N2440 G1 G41 D17 X180. Y935.425 Z1. F2000

N2450 X5. F10000

N2460 Y1085.425

N2470 X355.

N2480 Y935.425

N2490 X180.

N2500 X167.3

N2510 G40 X127.3 Y929.075 Z13.5

N2520 G0 X691.7 Y929.075

N2530 G1 G41 D17 X651.7 Y935.425 Z8.5 F2000

N2540 X367.7 F10000

N2550 Y1034.631

N2560 X935.7

N2570 Y935.425

N2580 X651.7

N2590 X639.

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From: mach1mach2cnc@... [mailto:mach1mach2cnc@...]
Sent: 18 February 2015 01:07 PM
To: mach1mach2cnc@...
Subject: Re: [mach1mach2cnc] Support

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?

Great !
So, with the lower acceleration, the error does not appear, yes ?
Now, to confirm, put it back up to 100 again, and see if it now appears.

If it does, with high confidence, you have encountered the problem.

To quickly localise the max practical acceleration, first make sure you can reliably repeat the problem.
Then split the difference-
3-4 tests should get you very very close to the optimum number.

Ie, if at 100 it fails, and at 10 it does not (diff 90);
Try 10+45 = 55.
Errors, try 10+45/2 = 32.
No error, try 55+45/2 = 77.

And so on..

If you want more acceleration and better results, use HTD pulleys, 5 mm profile, 15 mm wide, at 1:3.
16 teeth small pulley, 48 teeth big one (less than 16 does not have enough belt wrap).
This will likely work reliably at around 100 (or could be even more) as you now have 300% more torque available.

Best,
h-

On 18/02/2015 11:41, 'Andre Schoonbee' andresch@... [mach1mach2cnc] wrote:

I did the tests a few times and the z-axis comes back to the correct zero position. This is after I have reduced the acceleration.



-- 
-hanermo (cnc designs)



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