|
Posted by Christopher Tidy on April 14, 2006, 8:53 pm
Please log in for more thread options
Hi all,
Today I spent an idle moment pondering the design of machine tools. It
occurred to me that the thing that often kills the accuracy of old
lathes is wear to the ways at the headstock end. So I thought, why not
build a lathe with replaceable ways? Either precision ground bars which
screw onto the casting, or a simple set of ways which bolt onto the
headstock at one end, and perhaps a pair of mounting feet underneath?
And the best solution would be if all the manufacturers used the same
dimensions of replaceable ways for each size of lathe...
Anyone ever seen a lathe with intentionally replaceable ways?
Best wishes,
Chris
|
|
Posted by David Billington on April 14, 2006, 8:09 pm
Please log in for more thread options
A friend of mine has a Raglan Little John that has hardened ground
rectangular steel bars for the ways which can be removed and might be
reground. See
http://www.lathes.co.uk/raglan/page12.html
http://www.lathes.co.uk/raglan/index.html
Christopher Tidy wrote:
> Hi all,
>
> Today I spent an idle moment pondering the design of machine tools. It
> occurred to me that the thing that often kills the accuracy of old
> lathes is wear to the ways at the headstock end. So I thought, why not
> build a lathe with replaceable ways? Either precision ground bars
> which screw onto the casting, or a simple set of ways which bolt onto
> the headstock at one end, and perhaps a pair of mounting feet
> underneath? And the best solution would be if all the manufacturers
> used the same dimensions of replaceable ways for each size of lathe...
>
> Anyone ever seen a lathe with intentionally replaceable ways?
>
> Best wishes,
>
> Chris
>
|
|
Posted by Ned Simmons on April 14, 2006, 8:16 pm
Please log in for more thread options says...
> Hi all,
>
> Today I spent an idle moment pondering the design of machine tools. It
> occurred to me that the thing that often kills the accuracy of old
> lathes is wear to the ways at the headstock end. So I thought, why not
> build a lathe with replaceable ways? Either precision ground bars which
> screw onto the casting, or a simple set of ways which bolt onto the
> headstock at one end, and perhaps a pair of mounting feet underneath?
> And the best solution would be if all the manufacturers used the same
> dimensions of replaceable ways for each size of lathe...
>
> Anyone ever seen a lathe with intentionally replaceable ways?
>
I've owned three. A Jones & Lamson 7C turret lathe with rectangular
ways, a Rathbone chucker with round ways, and a Taiwanese copy of a
Hardinge HLVH which has a single full width dovetail fastened to the
base casting.
Recirculating ball linear ways are common on CNC machines.
Ned Simmons
|
|
Posted by c.henry on April 14, 2006, 8:34 pm
Please log in for more thread options Ned Simmons wrote:
> says...
>> Hi all,
>>
>> Today I spent an idle moment pondering the design of machine tools. It
>> occurred to me that the thing that often kills the accuracy of old
>> lathes is wear to the ways at the headstock end. So I thought, why not
>> build a lathe with replaceable ways? Either precision ground bars which
>> screw onto the casting, or a simple set of ways which bolt onto the
>> headstock at one end, and perhaps a pair of mounting feet underneath?
>> And the best solution would be if all the manufacturers used the same
>> dimensions of replaceable ways for each size of lathe...
>>
>> Anyone ever seen a lathe with intentionally replaceable ways?
>>
>
> I've owned three. A Jones & Lamson 7C turret lathe with rectangular
> ways, a Rathbone chucker with round ways, and a Taiwanese copy of a
> Hardinge HLVH which has a single full width dovetail fastened to the
> base casting.
>
> Recirculating ball linear ways are common on CNC machines.
>
> Ned Simmons
some colchesters have replaceable ways
but with hardened ways miost last longer than the other parts , if well
cared for
i have a 1946 monarch that was one of their first with hardened ways ,
and they look new , and machine like it
|
|
Posted by Harold and Susan Vordos on April 14, 2006, 9:50 pm
Please log in for more thread options
> Hi all,
>
> Today I spent an idle moment pondering the design of machine tools. It
> occurred to me that the thing that often kills the accuracy of old
> lathes is wear to the ways at the headstock end. So I thought, why not
> build a lathe with replaceable ways? Either precision ground bars which
> screw onto the casting, or a simple set of ways which bolt onto the
> headstock at one end, and perhaps a pair of mounting feet underneath?
> And the best solution would be if all the manufacturers used the same
> dimensions of replaceable ways for each size of lathe...
>
> Anyone ever seen a lathe with intentionally replaceable ways?
>
> Best wishes,
>
> Chris
>
LeBlond used replaceable ways in their contstuction at one point in time.
They were rectangular as I recall. It's been many years since I last saw
one..
Harold
|
| Similar Threads | Posted | | OT -- story that is sad in very many ways | July 17, 2007, 4:51 pm |
| Unusual ways of carrying cargo | October 20, 2006, 10:48 am |
| hey, ways declare because of rural navels, unless they're traditional | August 12, 2007, 7:36 pm |
| what are some ways to remove cylinder sleeves in an old engine. | May 27, 2008, 2:58 pm |
| ~~~~!! EASY And AUTOMATIC Ways To Make Money Online !!~~~~ | November 14, 2007, 12:59 pm |
| Summary of ways people fixed their Nikon Coolpix camera battery door latch | October 19, 2007, 12:38 am |
| Re: HELP Designing lathe spindle, bearings questions, WTB: Lathe headstocks | July 2, 2006, 9:53 pm |
| Continuing lathe chatter (from people now, not the lathe. :-) | May 21, 2008, 1:19 am |
| Re: Continuing lathe chatter (from people now, not the lathe. :-) | May 25, 2008, 12:12 am |
| Re: Continuing lathe chatter (from people now, not the lathe. :-) | June 1, 2008, 11:51 am |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
>
> Today I spent an idle moment pondering the design of machine tools. It
> occurred to me that the thing that often kills the accuracy of old
> lathes is wear to the ways at the headstock end. So I thought, why not
> build a lathe with replaceable ways? Either precision ground bars
> which screw onto the casting, or a simple set of ways which bolt onto
> the headstock at one end, and perhaps a pair of mounting feet
> underneath? And the best solution would be if all the manufacturers
> used the same dimensions of replaceable ways for each size of lathe...
>
> Anyone ever seen a lathe with intentionally replaceable ways?
>
> Best wishes,
>
> Chris
>