Hi,
I am using the keyway generator to place a keyway in a hub and shaft, but the depth of the keyway (and the height of the associated key) is not right.
I am using an 18mm and a 20mm dia shaft, both of which should use a 6mm wide by 6mm high key according to the ISO standard. http://mdmetric.com/tech/keywayspecify.pdf http://www.roymech.co.uk/Useful_Tables/Keyways/keyways.htm
But Inventor gives me a 6mm wide x 4mm high key and the keyways to fit; so if I use a standard 6mm high key in real life it won't fit. There doesn't seem to be any way to change to a custom key height.
Am I doing something wrong? Or is Inventor using a different set of standards? It's pretty good at matching standards in other places, for example the gear and fastener generators, so this seems strange to me.
Thanks,
Tom
It seems if I use the DIN6885A or JISB1301 standard keys they come out the right size. Does anyone have any idea why the ISO one doesn't match?
Autodesk still has not corrected the keyway depth issues. I am attempting to do a proper keyway in 2.938" shaft. ANSI setting gives a key dept of 0.326 instead of 0.375 on the side of the keyway. In other words the keyway is 0.049" too shallow when selecting a "square" key.
Autodesk has now created a CASE file for this issue...[CaseNo:09508110.] It has subsequently been transferred to the development group and the case "closed". No fix yet...just... Case Closed. I am attaching here some information I sent to them.