mobile_bob
Stainless
- Joined
- Oct 23, 2005
- Location
- tacoma washington
been looking into some of tony's pics and found some more interesting round bed designs
http://www.lathes.co.uk/kneller/index.html
http://www.lathes.co.uk/leinweber/
the idea i came to me for proper placement of the round ways would be to make a casting, sufficiently long so that both holes could be bored and honed to precise sizing of the way stock used. After which the casting could be cut into sections.
one section would be used to mount the head stock to.
one section to mount the end of the ways.
another section to mount the cross slide
and finally one section to mount the tail stock to.
provided the headstock mount and end mount casting are mounted to a base, (such as granite or cast iron,) proper alignment of the ways, and twist of the ways would be eliminated. it would appear to me that a highly precise bed/way assembly would be the result.
as for a head stock and the question of making a precision spindle assy, from what i have read, the plain brg design can be made very precise. The downside is one of limited speed of the spindle using the plain brg vs. roller or ball brgs.
could not a plain brg headstock be made with pressure lubrication to the plain brgs? this would allow high speed operation. Are there any commercial lathes that have pressure fed plain brgs?
additionally one could provide pressure lubrication to the slide brg surfaces to reduce wear on the round ways to nearly nill.
i know you guys are probably tired of this subject, but i am like a dog on a bone i guess.
with no usa manufactures of small bench top lathes left anymore that i am aware of, and everyone here seemingly against the chinese machines, it would seem like there would be some interest in developing one here.
might be a cool collective project for members of this board to work on. i would sure lend itself to many different folks working on different components of the machine, ie. casting the dual bore component, boring and honing, cutting, etc.
seems like there might be a market for a kit at least, allowing folks to assemble the pieces and have a useful machine when done.
what do you guys think?
bob g
http://www.lathes.co.uk/kneller/index.html
http://www.lathes.co.uk/leinweber/
the idea i came to me for proper placement of the round ways would be to make a casting, sufficiently long so that both holes could be bored and honed to precise sizing of the way stock used. After which the casting could be cut into sections.
one section would be used to mount the head stock to.
one section to mount the end of the ways.
another section to mount the cross slide
and finally one section to mount the tail stock to.
provided the headstock mount and end mount casting are mounted to a base, (such as granite or cast iron,) proper alignment of the ways, and twist of the ways would be eliminated. it would appear to me that a highly precise bed/way assembly would be the result.
as for a head stock and the question of making a precision spindle assy, from what i have read, the plain brg design can be made very precise. The downside is one of limited speed of the spindle using the plain brg vs. roller or ball brgs.
could not a plain brg headstock be made with pressure lubrication to the plain brgs? this would allow high speed operation. Are there any commercial lathes that have pressure fed plain brgs?
additionally one could provide pressure lubrication to the slide brg surfaces to reduce wear on the round ways to nearly nill.
i know you guys are probably tired of this subject, but i am like a dog on a bone i guess.
with no usa manufactures of small bench top lathes left anymore that i am aware of, and everyone here seemingly against the chinese machines, it would seem like there would be some interest in developing one here.
might be a cool collective project for members of this board to work on. i would sure lend itself to many different folks working on different components of the machine, ie. casting the dual bore component, boring and honing, cutting, etc.
seems like there might be a market for a kit at least, allowing folks to assemble the pieces and have a useful machine when done.
what do you guys think?
bob g