idea for linear belt drive

[Robin Hewitt]

250rpm is doable IMHO

You are probably right. Stepper technology has moved on and I need to adjust my comfort zone.

My comfort zones are fairly well tuned, I always 'know' what thickness of material to use, what bolt size etc. But obviously I must now consider adjusting my stepper motor zone, possible my feed rate zone to. This will require a degree of experimentation.

I have had over 1000 rpm on a disc-magnet stepper and a 40 volt driver but that is one whacky stepper motor.

[HiltonSteve]

Here is another idea which i quite like for linear drive, watch the video which shows the machine using chain and belt. I like the idea of keeping the chain/belt stationary and pulling the axis along on it.

http://www.youtube.com/watch?v=vETkf...mbedded#at=154

You are probably right. Stepper technology has moved on and I need to adjust my comfort zone.

I have had over 1000 rpm on a disc-magnet stepper and a 40 volt driver but that is one whacky stepper motor.

My machine runs the steppers at 1000rpm for rapids and even had it up 1500rpm at one point but was just too fast for the machine. I am using Roy's 5A driver boards and 5A steppers, had to keep the boards cool to get these speeds with a couple of 120mm fans but no problems so far!

[Robin Hewitt]

My machine runs the steppers at 1000rpm for rapids and even had it up 1500rpm at one point but was just too fast for the machine.

Aha! You to have a comfort zone :heehee:

I have the 220 Volt drivers so presumably it should go like the absolute clappers once I get the 48MHz dedicated cpu rattling the driver pins.

Thinks: Max step rate 40Khz, divide by 1600 steps/rev, 25 rps, 1500 rpm, 10cm/second rapids resolving 2.5 microns

No, I'm not brave enough either :rofl:

[HiltonSteve]

Aha! You to have a comfort zone :heehee:

Seems that i do without even realising..!! :rofl: