Messages

31

General Mach Discussion / Re: steps and lead screws

« on: December 31, 2006, 01:58:48 PM »

Thanks guys for the replies, I will try your suggestions.
Terry

32

General Mach Discussion / Re: steps and lead screws

« on: December 30, 2006, 11:34:02 PM »

Thanks for the reply Graham, I did play with the velocity etc. and it seems to help, can you give me a general setting that most are using?
Terry

33

General Mach Discussion / steps and lead screws

« on: December 30, 2006, 04:55:56 PM »

I have my desktop machine finally running, using the roadrunner as a sample to set things up, I seem to be losing steps, the design never comes out quite the same each time, I am using ordinary 3/8 x16 threaded rod for lead screws, would proper acme thread be an inprovement and if so what lead or tpi should I be looking at? I am running half step with 125oz 2amp motors.
Thanks for any help offered.
Terry

34

General Mach Discussion / Re: what am I doing wrong

« on: December 25, 2006, 03:13:53 PM »

The board is more than big enough, it does not throw an e stop the cutter justs moves beyond the top edge of the board, a couple of inches above my starting point. My way of thinking is if for example if I jog to the center of the board, zero all axis, the cutter should not move above that zero point without going into a minus reading on the dro. Another way of putting it is how do I know where the cutting is going to take place on the board?
Terry

35

General Mach Discussion / what am I doing wrong

« on: December 25, 2006, 02:51:22 PM »

Each time I try to cut the roadrunner, I place the material on the bed, jog the cutter to about 1.5 inches from the top of the board and the same from the left edge, sitting in front of machine, top being the farthest away from me, I zero the axis, regenerate the tool path and run, it will cut the pattern too high on the board, when it gets to the roadrunner head, in my mind it would have to go into a minus position on the y axis because it has gone to the negative side of the y axis based on where I zeroed it.
What am I missing?
Thanks and Merry Xmas to all.
Terry

36

General Mach Discussion / Re: spindle hookup

« on: December 24, 2006, 02:59:53 PM »

Thank you for the replies, I have decided to just turn on manually and control speed with router speed control box, I have it set up now so that turning on the router also turns on my shopvac for chips etc.
Terry

37

General Mach Discussion / Re: spindle hookup

« on: December 24, 2006, 01:18:25 PM »

Thanks Chad.
Terry

38

General Mach Discussion / Re: spindle hookup

« on: December 23, 2006, 01:50:34 PM »

I have a porter cable edge trimmer router, I think after giving it more thought, I will just use it manually with an after market speed control attached. Thanks for the replies.
Terry

39

General Mach Discussion / Re: spindle hookup

« on: December 22, 2006, 11:09:22 PM »

I don't know if this will work Brett.

40

General Mach Discussion / spindle hookup

« on: December 22, 2006, 06:56:51 PM »

Does anyone have a schematic that a non electronic type can understand to hookup my spindle to mach 3 using the hobby cnc pro board, I managed to assemble the board, limit and home switches along with e-stop, the drawings on the hobby cnc file board do not make much sense to me.
Thanks
Terry