07-22-2012, 11:42 AM
(This post was last modified: 07-22-2012, 12:01 PM by Sunset Machine.)
Or in a mill or lathe with a test indicator. Still half-asleep, but if you put the ball on the edge of the taper and feed it in until the DTI reads .015, the feed for 60 degrees would have been .008, and for 90 degrees, .015.
It's called "trig" and every machinist should learn the basics, especially right angle triangles. Simple stuff, really. Use the calculator on your computer in scientific mode.
Tan = O/A where O is opposite of the angle, A is adjacent to the angle. Where the two meet is 90 degrees.
The tangent of 45 degrees (half of 90) is 1.00 ... So... 1 x .015" = .015"
The tangent of 30 degrees (half of 60) is .577 ... So... .577 x .015" = .008"
If that's wrong, then it isn't as simple as I've indicated and I need more coffee.
I guess in this case it would be easier to use a lathe and the compound, and simply read the angle directly but that still doesn't let you off the hook for learning trig..
It's called "trig" and every machinist should learn the basics, especially right angle triangles. Simple stuff, really. Use the calculator on your computer in scientific mode.
Tan = O/A where O is opposite of the angle, A is adjacent to the angle. Where the two meet is 90 degrees.
The tangent of 45 degrees (half of 90) is 1.00 ... So... 1 x .015" = .015"
The tangent of 30 degrees (half of 60) is .577 ... So... .577 x .015" = .008"
If that's wrong, then it isn't as simple as I've indicated and I need more coffee.
I guess in this case it would be easier to use a lathe and the compound, and simply read the angle directly but that still doesn't let you off the hook for learning trig..