Yahoo Answers is shutting down on 4 May 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Broaching technology?
Can any one suggest method of Blind hole Broaching - Hexagonal key way internal. Depth 20 mm and Across flat 10 mm. Please suggest me relevant broaching machine to be used for Broaching Blind hole. Thanks
3 Answers
- 1 decade agoFavourite answer
I like tinkerlayor's answer above - Rotary broaching looks like a very interesting technology!
I was going to say cold-heading, too - probably how most hex sockets are made. But 1:2 width/depth ratio may be difficult for this as well.
If you have small volume (i.e. hundreds), lost-wax casting can make this blind hole. Higher piece price but cheaper tooling compared to cold head.
The extreme.... If you just need one piece - EDM can get any shape blind hole.
- 1 decade ago
Rotary broaching can probably do this, though the depth to width ratio might be a little higher than optimum. Rotary broaching can be done on a screw machine or lathe with proper tooling.
http://www.slatertools.com/rotary_broaching.htm
For high production you might consider a forging or cold heading type operation rather than a chip macking operation.
