|
Posted by Dave99 on July 5, 2008, 11:14 pm
Please log in for more thread options
I've been looking for a more accurate way to drill sets of holes 90
degrees from each other through round tube. I came across these V
blocks with clamps...
http://www.grizzly.com/products/90-V-Blocks-w-Clamp-Set-2-1-2-x-2-1-2-x-2-/G9816
I assumed the best way to use them would be to set a fence up on a
press table which centers the bit on the tube, clamp the two blocks to
your piece, then once you do holes on one side you would flip the
blocks over to the next side to get your holes 90 degrees to the first
set. Or possibly use one block and a stationary v-block to put the
other end of the tube into.
Is this the best way to accomplish this, or is there a better way I'm
missing?
Thanks,
Dave
|
|
Posted by Richard J Kinch on July 5, 2008, 11:23 pm
Please log in for more thread options
Dave99 writes:
> Is this the best way to accomplish this, or is there a better way I'm
> missing?
This is really two functions, cylindrical workholding versus 90-degree
indicating.
Vee blocks are one suitable workholding device for cylindrical things. Use
the clamps provided, or pinch the work against a vise jaw with the vee.
Assuming you don't have a precision rotary workholder like a rotary table
or collet holder, you can mark 90 degrees accurately one time on your lathe
chuck and thereafter hold the work in that for scribing. Or at the least
you can wrap paper around the tube and divide that as a template.
|
|
Posted by Curt Welch on July 6, 2008, 12:17 am
Please log in for more thread options > I've been looking for a more accurate way to drill sets of holes 90
> degrees from each other through round tube. I came across these V
> blocks with clamps...
>
> http://www.grizzly.com/products/90-V-Blocks-w-Clamp-Set-2-1-2-x-2-1-2-x-2
> -/G9816
>
> I assumed the best way to use them would be to set a fence up on a
> press table which centers the bit on the tube, clamp the two blocks to
> your piece, then once you do holes on one side you would flip the
> blocks over to the next side to get your holes 90 degrees to the first
> set. Or possibly use one block and a stationary v-block to put the
> other end of the tube into.
>
> Is this the best way to accomplish this, or is there a better way I'm
> missing?
Sounds good to me.
Here's another grizzly item I noticed in their catalog the other day that
could help with that set up...
http://www.grizzly.com/products/Round-Bar-Center-Finder/H2940
--
Curt Welch http://CurtWelch.Com/
curt@kcwc.com http://NewsReader.Com/
|
|
Posted by Grant Erwin on July 6, 2008, 1:36 am
Please log in for more thread options Dave99 wrote:
> I've been looking for a more accurate way to drill sets of holes 90
> degrees from each other through round tube. I came across these V
> blocks with clamps...
>
>
http://www.grizzly.com/products/90-V-Blocks-w-Clamp-Set-2-1-2-x-2-1-2-x-2-/G9816
>
> I assumed the best way to use them would be to set a fence up on a
> press table which centers the bit on the tube, clamp the two blocks to
> your piece, then once you do holes on one side you would flip the
> blocks over to the next side to get your holes 90 degrees to the first
> set. Or possibly use one block and a stationary v-block to put the
> other end of the tube into.
>
> Is this the best way to accomplish this, or is there a better way I'm
> missing?
>
> Thanks,
>
> Dave
If the tube is small enough so you can get it with a 5C collet, you can use
one of the handy square 5C collet blocks held against a vise stop in the
milling vise. When you're done with one hole, loosen the vise, flip the
block, slide it against the stop, tighten the vise and do the other hole.
Like this one:
http://www1.mscdirect.com/CGI/NNSRIT?PMPXNO=1806664&PMT4NO=45622504
Grant
|
|
Posted by Gunner Asch on July 6, 2008, 4:57 am
Please log in for more thread options On Sun, 06 Jul 2008 05:36:51 GMT, Grant Erwin
>Dave99 wrote:
>
>> I've been looking for a more accurate way to drill sets of holes 90
>> degrees from each other through round tube. I came across these V
>> blocks with clamps...
>>
>>
http://www.grizzly.com/products/90-V-Blocks-w-Clamp-Set-2-1-2-x-2-1-2-x-2-/G9816
>>
>> I assumed the best way to use them would be to set a fence up on a
>> press table which centers the bit on the tube, clamp the two blocks to
>> your piece, then once you do holes on one side you would flip the
>> blocks over to the next side to get your holes 90 degrees to the first
>> set. Or possibly use one block and a stationary v-block to put the
>> other end of the tube into.
>>
>> Is this the best way to accomplish this, or is there a better way I'm
>> missing?
>>
>> Thanks,
>>
>> Dave
>
>If the tube is small enough so you can get it with a 5C collet, you can use
>one of the handy square 5C collet blocks held against a vise stop in the
>milling vise. When you're done with one hole, loosen the vise, flip the
>block, slide it against the stop, tighten the vise and do the other hole.
>
>Like this one:
>http://www1.mscdirect.com/CGI/NNSRIT?PMPXNO=1806664&PMT4NO=45622504
>
>Grant
Or simply drill/bore the proper sized hole for your tube, in the
center of a rectangular block of steel, drill a hole in each of two
sides, slide in the tube, drill, drop in a pin, turn the block over to
the next hole and drill the second hole. Pull the pin, slide in the
new tube, and repeat.
Cost is nothing to speak but about a half hour of your time
Gunner
Political Correctness is a doctrine fostered by a delusional,
illogical liberal minority, and rabidly promoted by an
unscrupulous mainstream media, which holds forth the
proposition that it is entirely possible to pick up a turd by the clean end.
|
| Similar Threads | Posted | | Neat way of drilling centre holes in round bar....(non ranty political) | October 19, 2007, 9:22 am |
| 90 Degree joints, square tube steel | April 20, 2006, 12:42 am |
| fab question - I need to make/buy a thin SS half round tube | January 20, 2008, 12:54 pm |
| How to drill series of holes in square tube. | December 31, 2006, 3:56 pm |
| Revisiting: multiple holes in square aluminum tube | October 6, 2006, 8:04 pm |
| shank adapter, extension rod, button bit, thread bit,taper bit, taper rod, drill rod, drill bit, corss bit, chisel bit, DTH hammer drilling ,rock drill, drill tube, casing shoe, drilling tool, core bit, core barrel, ODEX, TUBEX, quarrying,mining equipment | September 8, 2006, 2:22 am |
| Test of Center Drilling vs. Spot Drilling. | August 28, 2008, 3:19 pm |
| Engraving a degree scale | March 21, 2007, 3:08 pm |
| Engraving a degree scale | December 4, 2007, 11:12 am |
| Degree symbol =?ISO-8859-1?Q?=B0?= | December 22, 2007, 1:28 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
> missing?