LinkBack URL
About LinkBacks
My guess would be wire EDM or use a Broach.
Al
| | |
<img src="http://www.replicaprops.com/notch.jpg"/img>
My guess would be wire EDM or use a Broach.
Al
CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
You can broach it.
Thank You,
Paul G
Site Owner-Webmaster-
Administrator
www.rfqwork.com
www.cnczone.com
www.welderzone.com
Well if you do not have a EDM or a broach in your basementI have drilled the slot with a 1/32 undersize and then file the corners in, this works if not a great deal of precision is needed, but if you are careful it can be that to.
BTW, if the large center bore is already there then the drill wont get it but taking your time you can file it. You could plunge mill the slot and then file.
Ken
Last edited by Ken_Shea; 07-21-2004 at 09:23 PM.
Heh, we used to broach alum keyways on a fadal with a hand ground broach. Talk about beating your spindle head to a pulp....Originally Posted by CNCadmin
Matt
San Diego, Ca
___ o o o_
[l_,[_____],
l---L - □lllllll□-
( )_) ( )_)--)_)
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
LOL Rekd, another useful tool those precision spindles make is a great quick arbor press
If you have the room, you might be able to drill the inside corners first to remove the radii and then mill out.
Or simply add an overcut in the corners as shown. The dia of the overcut is slightly larger than your bit.
Ken, that's another great trick I did with the Fadals. (Haven't had the heart to do it to meh Haas' yet..LOL Rekd, another useful tool those precision spindles make is a great quick arbor press)
Matt
San Diego, Ca
___ o o o_
[l_,[_____],
l---L - □lllllll□-
( )_) ( )_)--)_)
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Good idea Buscht, I will try and remember that.
replicapro, let us know how you ended up doint it.
Rekd I will admit that in a rush having done that on my old import bridgeport style mill where the precision beraings are not all that precision even when new, but it wont happen on my Haas for sure. Hey, on a CNC you could get a running start using rapids for those really tough press fits
In the olden days, I occassionally cut a keyway with a HSS square bit held in a boring bar in the lathe toolpost. I would "rack it by hand". Predrilling or roughing with an endmill helps a lot prior to doing this.
But for small work, broaches and a large arbor press will serve well, if you want to make the investment in the arbor press. It takes a so called "5-ton" arbor press to give you much usable depth for the work and the broach to fit beneath the ram.
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
... Hey, on a CNC you could get a running start using rapids for those really tough press fits
Matt
San Diego, Ca
___ o o o_
[l_,[_____],
l---L - □lllllll□-
( )_) ( )_)--)_)
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Hu to the rescue!!!LOL!!!!
I have done it like Hu described! It was to recut the undercuts on the commutator of my car's starter motor.
It's very effective, a little time consuming however......
Klox
*** KloX ***
I'm lazy, I'm only "sparking" when the EDM is running....
Posting Permissions
| | |
