For mine... My programmer hit a wall in checking a slot that has a tolerance of 10° (ten degrees), and the supplier wasn't shy about using it. I thought to put a ton of prehit / retract and the program still had a hell of a time gettting through it. The result needed a double check on this 1 off repair, for which we don't have adequate tooling to hold it so I used an angle block to butt up the rear face (is 180 the datum, close enough) then level out 2 slots and indicate off the top of the OD (2nd datum)... do the same thing after flipping the part 180 indicating off the 2nd datum and noting the difference. Draw up a couple of triangles and bam,ship it! Thank God the position of the slot means nothing to the operation of the part.
For mine... My programmer hit a wall in checking a slot that has a tolerance of 10° (ten degrees), and the supplier wasn't shy about using it. I thought to put a ton of prehit / retract and the program still had a hell of a time gettting through it. The result needed a double check on this 1 off repair, for which we don't have adequate tooling to hold it so I used an angle block to butt up the rear face (is 180 the datum, close enough) then level out 2 slots and indicate off the top of the OD (2nd datum)... do the same thing after flipping the part 180 indicating off the 2nd datum and noting the difference. Draw up a couple of triangles and bam,ship it! Thank God the position of the slot means nothing to the operation of the part.
