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| Transmission for table feed |
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| scout800:
Andrew , that is what i thought tumblers were thank you for the pic. Bill, you have been more than help full nice pics , and again thank you for your time it really helps me. John you are right, most of the speeds i use are slow any way. I think mid to slow speed is better than no speed, I was thinking last night it's only a 16 inch table stop to stop. How often would I be machining stop to stop ? Probably not very often , more like 4 to 8 inches at the most. I am used to using the 48 inch table at work and I use the rapid a lot. I guess I was comparing apples to oranges and probably shouldn't have. Any way I will continue on with the project and i will post picks and keep you posted. Thanx again Gentlemen. Dave. |
| BillTodd:
here's another idea you might concider... how about an automatic clutch so all that is required to operate it is a simple switch? The video show an anti reversing mechanism Two-way anti-reverse transmission 1b: by connecting the leadscrew to the green shaft, the handle to the red shaft and power feed to the blue ring (currently fixed) any motion of the blue ring will drive the green shaft but motion of the red shaft will not try to drive the blue ring. :) |
| scout800:
Hi Bill, wow that video is really cool . The things people think up amaze me, that's awesome. However , I saw some where where somebody was using a planetary gear set to speed up an end mill. So I thought this might work, so I went to Harbor Freight and bought a 1\2 inch air drill for a whopping $24.99, took it home and dismantled it. It turns out it has double planetary gear set, with an 18:1 ratio. I'm going to try and use it. If I make a simple spring loaded in/out cog like in the bridgeport drive , I'll locate it between the chuck and the drive motor. I'll then make a bearing support for the other end (sort of a pillow block if you will) then mount it all to a plate that mounts to my table. The drive motor says you can reverse it by switching two wires , so i will wire in a on/off/on toggle switch for directions through a variable speed. I'm sure when that time comes I will need some assistance. What do you Gentlemen think? Is there anything I'm missing ? Any input is helpful . Thanx for the interest. Dave. |
| scout800:
Hello , This is my first build log so bear with me please. I had some time to go out in the shop today to start on my transmission project. If you remember I decided to use a 1/2 drill planetary set to speed up motor rpm. After I took it apart I cut the end of drill case with the band saw and put in lathe to square the end, with this screwed into the planetary end of the drill it supports the rear ring gear. Then I machined the air vein rotor to accept a new press on bearing and pressed it on. This will be the end that gets the coupler for the lead screw. Next will be the supports to mount the assembly to a plate that the motor will be mounted too. I'll keep you posted thanx for looking. Dave. |
| BaronJ:
Hi Dave, I used a car wiper motor for my mill table feed. I used a tumbler mechanism to reverse the drive direction and a variable voltage power supply to get variable feed rates. |
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