Inheritance Machining
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This Tool Will Tell Me My Future
🕑 Added 2023-12-07 15:00:10 +0000 UTCWe've all seen the new lathe looks like it was ridden hard and put away wet... but how bad is it actually? The answer may surprise you...
Enjoy!
Comments
Geoff Williams
Great video mate. You demonstrated how an experienced Engineer gets that gut feeling that something doesn’t add up, so you devise different methods to check, and then critically analyse your method of measurement to confirm your didn’t create the weird data, which you did. Not a criticism. It was great to just share the experience because I saw the numbers and started scratching my head. Isn’t that lathe bed removable? For the amount of material removal you are going to attempt, perhaps a pro regrind is in order then scrape and lap in the final microns if needed. I know it may not be the most popular video topic but perhaps you could do a show on why these small errors compound, expand upon the math you showed with a more visual demonstration of what is wearing with a topographical graph of the data. I’m sure a lot of your viewers don’t have our math education, or a fitters’ education on the machine capabilities and the math they use. Even explaining how your analysis and problem solving process plays out. Maybe they are just here to watch the chips fly too but when you are taking on this degree of precision restoration I feel it deserves some drilling down into the detail.
James Riordan
Symbolic logic 👍🏻
Capt.Frito
mathematics is beautiful when expressing objective truths
Capt.Frito
Brandon mentioned he was looking for a surface grinder project (-:
Jeff Loffert
Stumbled upon this article on Hardinge spindle bearings, and it looks like like bearing preload is determined by a ground/lapped spacer. Maybe the main spindle nut came loose....more wishful thinking! Here's the article. Some good info on bearing replacement, if your Royal, is really close in design to the Hardinge. https://aafradio.org/garajmahal/Hardinge_spindle_bearing_replacement.htm
Seta
Thanks for the tip! I will look into a 4 footer. Here is a nice write up on the replacement procedure for the spindle bearings, note these are matched (lapped) bearings Hardinge part # HCA0000265 https://aafradio.org/garajmahal/Hardinge_spindle_bearing_replacement.htm
Brandon Sander
Amen!
Brandon Sander
to be fair every 5th comment on the last video was wondering why the lathe was so special 😂 Thanks a lot, Mike. This is looking like a long one!
Brandon Sander
I should have fed it the bad maps as a snack!
Brandon Sander
😂 I'm considering using a similar fixture on my big lathe too because i've been fighting taper there too!
Brandon Sander
fingers crossed! But I'm not getting my hopes up haha thanks!
Brandon Sander
I'll probably be digging into the spindle first but it will take a while. Especially if I have to find the bearings. Same with the dings and whatnot too. I've had a toolpost grinder on my make list for a while! If you get a larger surface plate I'd recommend jumping to a 4ft so you can use it to also scrap the ways. the 3ft is good for the fixture but not quite long enough for the whole thing disassembled. Thanks for being here!
Seta
Famous last words 🤣
James Riordan
L = N + 1, where L is anything worth having. This is Nobel material !
Michael Faragher
Remember when I said something like "I don't know lathes but I know excited machinists?" Thank you for explaining exactly why that's an awesome lathe. I am unduly excited about its feature set. And boy do I know about projects. Good hunting, man, glad to be along for the ride!
legendary.jerry@gmail.com
BoS is looking hungry! It’s been weeks!
legendary.jerry@gmail.com
Just grind it flat with the lathe tool! What can go wrong?
Jeffrey Spoor
Amazing explanations Brandon! Once you get this one squared away, you can come up to Indiana and fix my Clausing, been fighting a taper for a year and a half lol
Jeff Loffert
Hopefully, the spindle slop can be corrected with a simple preload adjustment! The extruded aluminum 3-point sled was a great idea. Look forward to seeing your progress on this lathe!
Seta
Those bearings are Uber expensive! I hope you find a way to fix the runout without a new set! I am getting 2 thou runout on the spindle but I need to find a way to precision grind the dings from the previous owner. I also have wear on the bed, your idea is awesome! Now I need a bigger surface plate! Talking about a long project… I am sure I will take at least 1 year to bring it up to standard… so many projects and so little time! Thanks for the schooling! I am so glad I joined your patreon!
