Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
hi all, see picture, I need to cut a keyway as shown. I just don't know what that type of boring bar with a crossways tool holder that is called, or where to get one.
If anyone could point me in the direction, that would be appreciated!
View attachment 222518
what material to make the boring bar with? I would think that anything soft enough to drill crosswise (if thats what you do), would not be rigid enough.
hardness has nothing to do with rigidity. all steel has the same rigidity. it all deflects the same amount when loaded with the same force. up to the point it bends permanently. hardness determines how much force it takes to permanently bend (yield)
I'm not sure I understand this statement. Rigidity by definition is the measure of resistance to the force required to "yield". Saying that 2" x 6" long piece of 4140 has the same Rigidity as a piece of 'same dimensions' 1018, is hard to believe.
So if it isn't hardness that makes a thing more Rigid, than what is? Density maybe? IE, a solid Carbide Bar normally for me is a 6-1 overhang ratio, and Steel is 4-1 ratio, very different Hardness'. Not asking about set-up or any other variables, just simple chunks of Metal.
I'm asking out of ignorance.
R
Okay, thanks. Now lets talk about Machining, the biggest challenge with Boring as an operation, is vibration. Based on teh above information and Young's Modulus, in a Boring operation a Bar made of 1018 is going to deflect the same amount as a Hardened Bar of 4340. Obviously we aren't making Bars out of A36 or 1018 for that matter--why not? It would be cheaper.
R
Notice
This website or its third-party tools process personal data (e.g. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. To learn more, please refer to the cookie policy. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise.