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I finally got the time to put my power feed on my universal grinder. It will be used any time the x position needs to be changed. Manual feed from the opposite end is still useable but it considerably stiffer with the motor engaged. It only required 4 new pieces of aluminum to complete the project. It is now ready for power.
Here is a link to the "Universal" Grinder which uses the xy table. Parts for the motor drive are listed there.
http://www.homemadetools.net/forum/s...9982#post71647
JR
I have a few shots of the "portable" feed motor power supply. I will use this on the lathe feed screw(not done yet) and on the Universal Grinder power feed. The parts are the same as used on the Mini Mill power feed with the exception of the plastic box. The 15 vdc power supply brick is simply epoxied on to the box. The mill unit is mounted on the spindle housing in a more permanent position as I use it all the time. On the lathe and grinder I will not be using it all the time so I went for a portable method.
Cheers, JR
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Thanks jjr2001! We've added your Grinder Table Power Feed to our Electrical category,
as well as to your builder page: jjr2001's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-grinder-table-power-feed"> <img src="/uploads/157789/homemade-grinder-table-power-feed.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-grinder-table-power-feed">Grinder Table Power Feed</a> <span> by <a href="http://www.homemadetools.net/builder/jjr2001">jjr2001</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/table'>table</a>, <a href='http://www.homemadetools.net/tag/motor'>motor</a>, <a href='http://www.homemadetools.net/tag/power-feed'>power feed</a> </div> </div> </div> </div>
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<!-- BEGIN /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->
Thanks jjr2001! We've added your Power Feed Controller to our Electronics category,
as well as to your builder page: jjr2001's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-power-feed-controller"> <img src="/uploads/157793/homemade-power-feed-controller.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-power-feed-controller">Power Feed Controller</a> <span> by <a href="http://www.homemadetools.net/builder/jjr2001">jjr2001</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/power-supply'>power supply</a>, <a href='http://www.homemadetools.net/tag/electronics'>electronics</a>, <a href='http://www.homemadetools.net/tag/controller'>controller</a> </div> </div> </div> </div>
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Nice clean build JR. A thought for the hand wheel/motor coupling issue. Perhaps if you cut your coupler in 2 and milled a couple of flats for a small plate and thumb screws you could uncouple the gear motor with a drop latch of some kind...of course you would have to align it again to recouple. Just thoughts...
Thanks for sharing this great build. ~PJ
Thanks PJ, Great idea. Should be able to fit that right in. Thanks again, JR
I have seen a post of a motorized X table on a mill. They used a sliding socket to engage and disengage the motor, real simple.Quote:
Originally Posted by PJs
I'll have to see if I can the page again.
Ralph
Nicely done!
I borrowed the idea from a u-tube video for a very nice sliding coupler and variable speed , two direction controller for my mill. Works great! Have a peek at his video and it may inspire you as well.
https://youtu.be/reRk4KXBBxU
Keep on building!
Rick
Thanks Rick that was the video I was thinking about.Quote:
Originally Posted by RickT
It really is a great idea for engaging and disengaging the drive motor.
Ralph
Thanks for the tips guys. That manual clutch is the way to go.
Cheers, JR
There is also a thing called a dog clutch that works the same but much easier. Here is a link for one maybe it will give you some food for thought.
A Dog Clutch for the MiniLathe
Nelson
My mill has a power feed with a friction clutch with cork gasket material glued to the worm gear - just turn the doorknob to engage or disengage it.
Attachment 23674
very interestingQuote:
Originally Posted by threesixesinarow
Nelson
yeah I'd like to see more detail, I need to do my mill someday.
Now I am liking that. I saw some round brake coils on the net somewhere that would be a great fit for my little power feed. Now to just find them.
Cheers JR
I don’t have an inside photo but it’s simple.
Attachment 23689
I removed the shaft of the wiper motor worm gear, the cross hatched part in the middle of the drawing, and bored out its center to run on a shoulder on the inboard one of two steel clutch plates that take the place of the keyed on right handwheel on the end of the feed screw. I tapped the hollow steel shaft of the doorknob to take the place of the handwheel retaining nut, and stuck a coil spring inside it to press the end of the feed screw so they turn together.
Tightening the knob presses the clutch plates together against the cork sheets glued to the faces of the worm gear and the cork has enough spring to push the plates apart when the pressure is removed. The clutch can be set tight or loose enough to slip but only by feel.
It looks like your car seat motor could be modified to work the same way.
Thanks, I almost understand once I have a motor in my hand it should come together.
Ralph
