Referencing and measuring angles, how to?


I have difficulty when angles other than 0 & 90 are involved in machining a
part.
Example; A counterbored hole for an 82 deg flat head screw at 30 deg from
the xy plane. I would set the vice at 30 deg. and now I need to reference
the material. How would I reference the highest corner, Y,Z?
How would I measure the counterbore depth?
Thanks,
Dave
Reply to
EZ
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"EZ" wrote in news:2jAog.109853$ snipped-for-privacy@newssvr13.news.prodigy.com:
Dave, If you tilt the vice up 30°, wouldn't the face you need to put the countersink in now be parallel with the XY plane?
Reply to
Anthony
Anthony yes it would but the surface of the material is slanted and what I need to do is reference the high edge so I can locate the hole position from it. What I'm asking is how do you edge locate on a corner like this ^ ?
| /\ | / \ I know what Y is, how do I locate it on the material? | / \ | / | / /|__| / / \ / / I don't know if the lines will position correctly on your reader. \ / \ / \/
I could use a pointed locator but I would still be sighting in on what I think is the edge. I need better accuracy than that. Maybe I reference Z then calculate height and base of a 30 deg triangle, find the Z point equil to the height and Y then is the length of the base from the corner. Enter that as the Y position from the edge.
I'm looking for methods here. Someone have a better way?
Dave
Reply to
EZ
Are you allowed to have a set point hole in the part when it's finished? If not, is there a hole feature larger than the shank of a tooling ball that can be cut later? If so, just put a tooling ball in the part and find it with an indicator.
Later,
Charlie
Reply to
Charlie Gary
"EZ" wrote in news:2LTog.110047$ snipped-for-privacy@newssvr13.news.prodigy.com:
The method I would use is with a co-ax indicator. Sweep one face of the angle just below the apex, sweep the other, when the readings are the same..you have found the true corner. Set 0, find Y0 and Z0 and off you go.
Reply to
Anthony

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