Search found 10 matches

by # 1 ORF
Wed May 23, 2012 9:37 am
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

My first though this morning was that was good thinking for 8-1 but not for 30-1 Then I read your post. I was using grade school math I had forgot that Pi thing. I will go back to the drawing board. Maybe increase the size of the big pulley say to 5.5 inches make it a wheel use the o ring as tread r...
by # 1 ORF
Tue May 22, 2012 11:44 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

I did not do the math when I made the drawing.I was thinking the 3/8-10 acme would be moving in and out any way so put a pulley on lt and haft the problem is solved. Make that a 4 inch pulley and a 1/2 inch drive pulley with the o ring drive belt. The finished part is a little over 1/2 inch long mak...
by # 1 ORF
Tue May 22, 2012 4:05 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

Fixture-2.jpg
Fixture-2.jpg (11.76 KiB) Viewed 2799 times
This came to mind. Both pulley and drive wheel would move in and out together. just have to figure out pulley size to get 30 to 1 ratio
by # 1 ORF
Mon May 21, 2012 11:42 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

PIC_1646.JPG Harold Sorry you are right it that old saying being to close to the forest ? The part has 5 groves .090 wide and .065 deep land between each grove as close as I can measure is.033 the diameter is 3/8 length is about .648. I'm inclosing a photo of a finished part That I hope will help c...
by # 1 ORF
Mon May 21, 2012 9:40 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

As I said in the beginning I have a small that is SMALL 3 in 1 Its just a little bigger than the old NUMAT. I can't find a name on it so I guess finding part will be a nightmare. Any way I just checked on RPM and 2500 is tops on the lath and the mill does that mean I need to start looking to farm ou...
by # 1 ORF
Sun May 20, 2012 7:41 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

Thanks for your 2 cents. I will work on doing away with the hand crank maybe replace it with a worm drive of some kind. I'm not suer I understand your suggestion about the two nuts and spring. Do you mean to use nuts instead of threading the fixture itself ? would you elaborate on that a little. Due...
by # 1 ORF
Sun May 20, 2012 3:57 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

Fixture.jpg I came up with this fixture off the top of my head. Do you think this might work?. Jump in any one add your 2 cents. My program would on let me add any text on the drawing so I'm adding them here the fixture is made from 6X4X1 with 3/8-10 ACME threaded rod with hand crank. the 3/8 Brass...
by # 1 ORF
Fri May 04, 2012 1:32 am
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

What are you making it out of? How big is it? No doubt it would be simple to replicate with a 4 or 5 axis CNC machine and in the past there were all sorts of mechanical gear making machines that could advance and rotate the workpiece simultaneously. But given the limitations of a 3-in-1 machine, my...
by # 1 ORF
Thu May 03, 2012 7:52 pm
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Re: Newbie Looking for giddiness

For some reason, I can barely make out your drawing -- it's very faint and very small. It looks like it might be a worm, rather than a gear? I think you can cut those in the same manner as cutting a thread. You would have to grind a form tool the right shape, and you would have to figure out the pi...
by # 1 ORF
Thu May 03, 2012 11:43 am
Forum: 3-in-1 Metalworking Machines
Topic: Newbie Looking for giddiness
Replies: 27
Views: 9603

Newbie Looking for giddiness

Can any one describe how to cut this gear. I have a small hobby 3 in 1. and willing to learn Thanks Jim