Levers and Livers. LOL

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Takes a lot of  to figure out what you're gonna do.  Drink and think  (Not while you're working, it just doesn't mix)Pic one........  What was there in the beginning.  Not much but a shaftPic two........  Scored some used pump bore at the oil field supply for $1 a foot  Inside dia exactly 1.750 (but it has to fit over 1.750 shaft).  Knocked off .015 from the ID to give it a nice slip fit, and to allow for any distortion when welding stuff onto the sleeve.  Final ID wound up at 1.765 give or take a few thou.  This was done on a milling machine.  It would have been a real simple thing on a lathe, but I don't have my old lathe rebuilt or set up yet.  The work was done with a boring head.  A PITA to set up.  You have to find the exact center of the spindle in relation to the workpiece.Pic three...........  What I use to find center.  It's easier than doing edge finding and then figuring the math.  This guage fits in the spindle, and you rotate the spindle with the feeler riding on the inside of the bore you want to enlarge.  When the readings, while rotating the spindle, are the same all the way around, you've found the center.  Setup time for a not very well experienced machinist like me is around 10-15 minutes.  Put a 3/8 end mill holder in the arbor, put the guage in the holder, center the piece, remove end mill holder and guage, and install boring head  There's many ways to bore out a piece, this just happens to be what I'm tooled for right now.Pic four.... Enlarging existing bolt hole in axle (I assume it was a bolt hole, or maybe a cotter key hole, it did have a cotter key in it when I tore it down.  3/8 to 1/2 enlargement.  Notice the very high tech ladder used to support long end of shaft  Because this is a bolt used to prevent the sleeve from rotating, the main force will be shear.  I feel a grade 8 bolt will be adequate for the shear.  Most wear will probably be on the sleevePic five.........  The start of the welding process.  First pass of a 3 pass built up weld.  I'm round weld challenged, can't do a decent one to save my soul.  It took up to now on this project to have practiced enough to put out something half decent.  I get all balled up changing the direction of the rod as I travel around the circle.  I'm just not good at it. Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:A nice, for me, end of the day weld.  Took all the welds on this project to finally convince my hand how to turn the rod when goin' round  AND I PROBABLY WON'T WELD ANY ROUND STUFF AGAIN FOR THE NEXT 6 MONTHS, AND HAVE TO DO IT ALL OVER AGAINPic one.....first passPic two..... second passPic three...... third passPic four...... Cold beer, warm rods.  I ain't got bubbles in my welds any more!!!!!!  It's rained 19 out of 20 days here, and the humidity has been positively somethin' else.  Running around 80% Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:This is the orientation of the levers and sleeves.Pic one.........  The levers have been left longer than I think I'll need in order to have enough leeway to figure out the proper geometry.  Once the proper length is established, and holes drilled, the levers will be trimmed to final sizePic two..... I'm pretty pleased that everything has turned out square.  It's been a matter of working on three different planes from top shaft, thru plate, then to axle shaft.  To have it all line up like this is something I really feel good about.  Don't forget, I'm not a great weldor, and certainly not a great machinist.The last pic was something I thought I'd throw in.  Notice the punch marks on the sleeve and the shaft?  They're there for a reason.  This sleeve will fit the shaft one way, and one way only.  I was running short of time, it's raining as we speak, and didn't go thru the crap to find exact center when drilling the hole.  I placed the sleeve, and shaft, in the vice, and gang drilled it.  Sleeve, and shaft in one shot.  I eyeballed it, and went to town.  I imagine I might be around 1/32 off.  So the sleeve has to be indexed to fit on the shaft.  The hole isn't truly centered.  It's a time thing.  Get it done, but make sure you make allowances for it. Attached Images"Any day above ground is a good day"http://www.farmersamm.com/
Reply:Nice build Samm, thanks for the post! Originally Posted by farmersamm...This sleeve will fit the shaft one way, and one way only.  I was running short of time, it's raining as we speak, and didn't go thru the crap to find exact center when drilling the hole....
Reply:Originally Posted by denrepNice build Samm, thanks for the post!No doubt it's hard to hit dead center when drilling a shaft.Anybody have any quick-tricks for centering?Good Luck
Reply:you just have to use the stroke of the drill press.  use the tool to find center with the arbor run down.  once center is found, allow arbor to retract.  then remove center finder and install bit.
Reply:hey farmersamm, hat off toyou on yer work and rebuild. i see you got a rod oven;im thinkin maybe all the little holes in my beads is a call from the universe to stop storing 7018 in the toilet tank ...how much electric you figure that puppy takes to  run 7-24?
Reply:That is a slick center finder Samm.Definitely in the easily lost class of tool - that you can't find when you finally need it! Boostinjdm's system should work for saving the setup..Good Luck
Reply:Good work, Samm. I have to ask what the jackshaft is going to do for the mechanical lift. Maybe I'm just not seeing the obvious.                        MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:Originally Posted by mla2ofusGood work, Samm. I have to ask what the jackshaft is going to do for the mechanical lift. Maybe I'm just not seeing the obvious.                        Mike
Reply:In some ways this is identical to pulling/pushing the middle of a taught cable attached to a stuck car.  Huge amount of force is generated by pushing against that cable.  It will actually cause the car to move a little.In some ways it sorta resembles a scissor lift thing.  I've seen it on smaller dump trucks in place of a full extension ram at the front of the dump bed."Any day above ground is a good day"http://www.farmersamm.com/
Reply:How much weight do you think you are trying to lift anyway? I guess the question is how much does that whole thing weigh?  I suppose a guy could chock the wheels to see that it even lifts. Back to basics that way. There just might be enough force on the lifting lever to use it as a catapult.
Reply:Originally Posted by farmersammI sure wish I knew something easy and fast.  Only thing I've seen is this little gizmo....Alfred got anything hidden at the bottom of his tool box???Aspiring machinists need to know
Reply:A Day at the Garage SalesAlfred:  (Tugging on Denrep's sleeve)  "Say boss, ya know the 20 you gave me to spend today?  Uh...... Can I have maybe just a few more dollars?"Denrep:  "OK, WHAT IS IT NOW?????....  MORE BACK ISSUES OF SPY VS. SPY!!  I TOLD YOU, ENOUGH IS ENOUGH!!!!!!!"Alfred brings something out from behind his back and shows it to Denrep.The rest is history!!!Denrep was so pleased with Alfred that he let him buy a box of old 45lps at the next stop"Any day above ground is a good day"http://www.farmersamm.com/