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how do you create a taper on a metal lathe?
Ok looking for a simple answer!
Thanks! |
wrote in message oups.com... Ok looking for a simple answer! Thanks! Everything machineman said, plus a duplicator (hydraulic or mechanical) can be employed. They used to be fairly common. CNC machines are programmed to do it as well, and have, for the most part, replaced the duplicators (tracers). Harold |
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And don't forget the natural method that us with worn out lathes use. Make a
cut and hope that the wear in the machine produces the taper we desire. In fact we have to work hard to get a piece out without a taper ;) lg no neat sig line "Harold and Susan Vordos" wrote in message ... wrote in message oups.com... Ok looking for a simple answer! Thanks! Everything machineman said, plus a duplicator (hydraulic or mechanical) can be employed. They used to be fairly common. CNC machines are programmed to do it as well, and have, for the most part, replaced the duplicators (tracers). Harold |
Machineman...Great link, thanks for posting it.
http://metalwebnews.com/machin=ADe-tools/ch7.pdf=20 Harry C. |
"Gunner" wrote in message ... On 29 May 2005 09:13:05 -0700, wrote: Ok looking for a simple answer! Thanks! Move the tail stock over A bit butcherous, but certainly simple. Gunner "Considering the events of recent years, the world has a long way to go to regain its credibility and reputation with the US." unknown |
John Sefton wrote:
"Gunner" wrote in message ... On 29 May 2005 09:13:05 -0700, wrote: Ok looking for a simple answer! Thanks! Move the tail stock over A bit butcherous, but certainly simple. Gunner ? |
"Tom" wrote in message ... John Sefton wrote: "Gunner" wrote in message ... On 29 May 2005 09:13:05 -0700, wrote: Ok looking for a simple answer! Thanks! Move the tail stock over A bit butcherous, but certainly simple. Gunner ? Yeah, me, too! Harold |
On Mon, 30 May 2005 11:27:30 +1000, "John Sefton"
wrote: "Gunner" wrote in message .. . On 29 May 2005 09:13:05 -0700, wrote: Ok looking for a simple answer! Thanks! Move the tail stock over A bit butcherous, but certainly simple. And in the early days..the only way. Actually its quite accurate and works well assuming you set up properly, and only requires the minimal tooling Gunner Gunner "Considering the events of recent years, the world has a long way to go to regain its credibility and reputation with the US." unknown "Considering the events of recent years, the world has a long way to go to regain its credibility and reputation with the US." unknown |
In article ,
Gunner wrote: On Mon, 30 May 2005 11:27:30 +1000, "John Sefton" wrote: "Gunner" wrote in message . .. On 29 May 2005 09:13:05 -0700, wrote: Ok looking for a simple answer! Thanks! Move the tail stock over A bit butcherous, but certainly simple. And in the early days..the only way. Actually its quite accurate and works well assuming you set up properly, and only requires the minimal tooling Bearing in mind two factors: 1) The workpiece must be turned between centers for this to work. Otherwise offsetting the tailstock does little other than making it difficult to use it for drilling holes in the end of a workpiece. :-) 2) It is sensitive to length of workpiece. If you have a batch of workpieces of the same precise length between centers (including the depth of the center holes), you will get repeatable tapers. However, if the length varies, the angle will also vary, unless you spend a lot of time setting up each one separately. Note that for *some* lathes (e.g. the Unimat SL-1000), a short workpiece can be taper turned by rotating the headstock to the proper angle. Obviously, you don't get support from a tailstock center in this case, so the length is quite limited, but it does work. You could turn between centers with the Unimat SL-1000 by offsetting the head (by rotating it as above), but it makes the angle of the headstock taper to the center hole rather extreme (perhaps three or four times the angle desired at a minimum). Offsetting the tailstock is a more gentle approach -- but the Unimat SL-1000 did not provide for this option. Other than this, other answers have already covered everything that *I* can think of, so I'll stop typing now. Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
On 30 May 2005 16:57:13 -0400, (DoN. Nichols)
wrote: In article , Gunner wrote: On Mon, 30 May 2005 11:27:30 +1000, "John Sefton" wrote: "Gunner" wrote in message ... On 29 May 2005 09:13:05 -0700, wrote: Ok looking for a simple answer! Thanks! Move the tail stock over A bit butcherous, but certainly simple. And in the early days..the only way. Actually its quite accurate and works well assuming you set up properly, and only requires the minimal tooling Bearing in mind two factors: 1) The workpiece must be turned between centers for this to work. Otherwise offsetting the tailstock does little other than making it difficult to use it for drilling holes in the end of a workpiece. :-) 2) It is sensitive to length of workpiece. If you have a batch of workpieces of the same precise length between centers (including the depth of the center holes), you will get repeatable tapers. However, if the length varies, the angle will also vary, unless you spend a lot of time setting up each one separately. Note that for *some* lathes (e.g. the Unimat SL-1000), a short workpiece can be taper turned by rotating the headstock to the proper angle. Obviously, you don't get support from a tailstock center in this case, so the length is quite limited, but it does work. You could turn between centers with the Unimat SL-1000 by offsetting the head (by rotating it as above), but it makes the angle of the headstock taper to the center hole rather extreme (perhaps three or four times the angle desired at a minimum). Offsetting the tailstock is a more gentle approach -- but the Unimat SL-1000 did not provide for this option. Other than this, other answers have already covered everything that *I* can think of, so I'll stop typing now. Enjoy, DoN. But wasnt the thread about turning tapers on a lathe? This toy thing while interesting..is hardly germane. VBG Gunner, ducking and running "Considering the events of recent years, the world has a long way to go to regain its credibility and reputation with the US." unknown |
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