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Model Forum / General / Models / September 2006Long tapers
Hi all, I need to cut a long (~500mm) taper on my lathe that is longer than the travel on the top slide. Are there any gadgets/ideas that will let me do this in a single pass? I have a Colchester Triumph 2000 BTW. Cheers, Stephen. > Hi all, I need to cut a long (~500mm) taper on my lathe that is longer than > the travel on the top slide. Are there any gadgets/ideas that will let me > do this in a single pass? > > I have a Colchester Triumph 2000 BTW. Is the taper shallow enough to setover the tailstock and do it between centres? Or there's always the boring head in the tailstock as per John S's pictures. Did you originate that John? Other than that it's CNC or taper turning attachments.. Wayne.... >> Hi all, I need to cut a long (~500mm) taper on my lathe that is longer >> than the travel on the top slide. Are there any gadgets/ideas that will [quoted text clipped - 4 lines] > Is the taper shallow enough to setover the tailstock and do it between > centres? Can't do that unfortunately. > Or there's always the boring head in the tailstock as per John S's > pictures. Did you originate that John? Thanks for the reply, does he keep these pics online anywhere? Guess I'll have to go looking for a taper turning attachment for it. Stephen. > Can't do that unfortunately. Too steep an angle? What is the angle you are looking for? >> Or there's always the boring head in the tailstock as per John S's >> pictures. Did you originate that John? > > Thanks for the reply, does he keep these pics online anywhere? Somewhere! Hopefully he'll chime in. But basically it's a pretty stock milling boring head mounted in the tailstock, with a centre in one of the boring bar sockets. You can then dial in your taper by offsetting the centre. > Guess I'll have to go looking for a taper turning attachment for it. They are a pain in the a.s as far as I'm concerned. I've got one on the M300 clone I have. I disabled it. But then I have CNC lathes at hand so it's no big deal. Wayne... "Wayne Weedon" <wayne@fdos-design.com> wrote in message >> Can't do that unfortunately. > > Too steep an angle? What is the angle you are looking for? Have a look here http://www.perfectphase.com/Mousse/Pages/CategorySelect.aspx?CatID=149 I need to build a larger lighter version of this, to replace this damaged prototype :) It's built in sections that are interferenced fitted together (you can see where the first joint I tried didn't go so well on this one :) then I just need to skim down the outside to give it a smooth finish. I'd have to offset the tailstock end over 3" plus the base would have to have a plug made and the part mounted via that. > They are a pain in the a.s as far as I'm concerned. I've got one on the > M300 clone I have. I disabled it. But then I have CNC lathes at hand > so it's no big deal. I've been meaning to bodge some CNC onto this lathe at some point, nothing to accurate, just something to help with compound curves, must get round to that one day, well the winter build season is coming :) Stephen. >"Wayne Weedon" <wayne@fdos-design.com> wrote in message >> [quoted text clipped - 22 lines] >to accurate, just something to help with compound curves, must get round to >that one day, well the winter build season is coming :) Compound curves? You really *do* need a hydraulic copier <VBG> Cheers Tim Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service > Compound curves? > You really *do* need a hydraulic copier <VBG> I am tempted :) But it needs a 3 phase power supply correct? What sort of money are you looking for it? Stephen. >> Compound curves? >> You really *do* need a hydraulic copier <VBG> > >I am tempted :) But it needs a 3 phase power supply correct? Yes, it does have a 3-phase motor. I'll check whether it's dual voltage (suitable for VFD) or not. >What sort of money are you looking for it? Can't remember what I paid for it. Got it off ebay last year, then decided to swap the lathe instead (I wanted it for doing tapers). May have paid a bit over the odds, but it's a late model, very tidy, with all the bits while most seem to have lost stuff, usually rails or rail fittings, on the way. I'll track it down, then think of a number & contact you off-list. Cheers Tim Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service >> Compound curves? >> You really *do* need a hydraulic copier <VBG> [quoted text clipped - 4 lines] > >Stephen. Sorry I haven't got back sooner. It is a dual voltage motor, 370Watt (1/2 hp) so would run from a small inverter/VFD. I'm looking for 200 quid. They do go for less sometimes, but often with important bits missing, & as I noted earlier this is a very late model. email me off list if interested. Tim Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service http://www.rcgroups.com/forums/showthread.php?t=527876&highlight=taper+turning+b oring+hea its a clever fix ! -- willowkevi > http://www.rcgroups.com/forums/showthread.php?t=527876&highlight=taper+turning+b oring+head > its a clever fix !! Well thats the pic I was thinking of. So the original poster doesn't have to look too hard here's the direct link to Johns pic. "http://homepage.ntlworld.com/stevenson.engineers/lsteve/hidden/taperset.jpg" Wayne.... >Hi all, I need to cut a long (~500mm) taper on my lathe that is longer than >the travel on the top slide. Are there any gadgets/ideas that will let me [quoted text clipped - 5 lines] > >Stephen. A hydraulic copier <g> Of course the fact that I have one that I no longer need, which IIRC came off a Triumph 2000, has nothing to do with that suggestion <VBG> Tim Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service |
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