Messages

101

General Mach Discussion / Re: variable pitch pulley and cnc drive

« on: July 01, 2011, 01:59:41 PM »

omg this sounds complicated! lol
how does this brain work?

i dont think the spindle rpm moves in equal values on the crank. like the first bit moves small amounts of rpm and then the upper half like doubles it....

thanks

102

General Mach Discussion / variable pitch pulley and cnc drive

« on: July 01, 2011, 11:56:20 AM »

on my shizuoka mill it has the pitch drive for the rpm change. i would like to use this with a stepper motor for rpm and have the vfd to just turn it on and off.
i have seen pics where it is done but are wondering how this would be controlled in mach 3??

i was thinking of installing a tach to the spindle to read true speed. i dont think i can get mach to read this and act on it huh?

i have searched but cant seem to get the right key words.....

103

General Mach Discussion / Re: Noise Issues causing all sorts of problems

« on: June 10, 2011, 12:37:04 PM »

both my cnc mills share the same cabinat and it is a super noisy area. we had a hell of a time to get it up and running. now i just have to see if it will be stable.

we used all kinds of caps and pull up things that are way out of my pay level.

104

General Mach Discussion / Re: 1 axis jog=smooth 2 axis jog= rough?

« on: June 09, 2011, 06:46:53 PM »

ya, that makes sense.
i got a smoothstepper ordered and will see how awsome it can make my machine.

105

General Mach Discussion / Re: 1 axis jog=smooth 2 axis jog= rough?

« on: June 09, 2011, 06:07:20 PM »

gotcha

106

General Mach Discussion / Re: 1 axis jog=smooth 2 axis jog= rough?

« on: June 09, 2011, 11:52:12 AM »

oh i see.
i just thought the max being at 130 it would do that diagonally too.
thanks

107

General Mach Discussion / Re: 1 axis jog=smooth 2 axis jog= rough?

« on: June 09, 2011, 11:22:28 AM »

yes
both xy are set to 130ipm and when you jog both at the same time it goes up to around 170ipm on the mach speed tach thingy. the table seems to be doing just 130 though. i can hear it running the same speed as it should.

108

G-Code, CAD, and CAM discussions / Re: Dolphin CAD/CAM USA

« on: June 09, 2011, 01:58:40 AM »

i have nothing but good things to say about dolphin too.

109

General Mach Discussion / Re: 1 axis jog=smooth 2 axis jog= rough?

« on: June 09, 2011, 01:26:42 AM »

so i got my encoders down to 200 count, 4-1 belt drive, and 5tpi screws.

i can net 130ipm pretty easy and she is very much smoother on the xy jogging together. i did notice the speed says it is doing like 170ipm which i thought funny because the motor tuning is @ 130ipm. how does that work?

110

General Mach Discussion / Re: 1 axis jog=smooth 2 axis jog= rough?

« on: June 05, 2011, 04:34:15 PM »

thanks guys, i will play with it some.