Re: Threading
far as i see, this is a 60 degrees thread ...
if you can convert that to mm, i can help you
is this correct ?
... diameter 5/16 = 0.3125 > 7.9375mm
... tpi 18 > pitch = 1.4111mm
... angle : 60 degress
... length : 304.8mm
... i guess it is an external thread ...
I have a partial profile insert by Mitsubishi.> why partial and not full ? what is the diameter before threading ? what is the diameter after threading ?
I don't know how to make sure the insert is cutting on both sides either.> do you wish for both sides to engage ? equaly ? 75 - 25 ? do you know what targets when sides are not equal engaged ? do you really wish for both sides to cut ? or just wanna get that thread done ?
Something to do with a 0, 30, or 60 degree approach. > yup, you can go 0 , 30 , 60 ... or even 2.123 degress
if i done the math correct, your thread is too long : 300mm for a 8diameter .. you need tailstock and steady rest ... how do you clamp and suport the part ? kindly !
at such length, machining on lathe is not effectvie; roller forming or buy 1 meter of such a thread bar and cut it to your need
if i was in the situation to do such a long thread, i would use attached tool, or a following steady rest
Ladyhawke - My Delirium, https://www.youtube.com/watch?v=X_bFO1SNRZg