I have been trying to write a program for a part and have noticed that my part print nominals aren't matching up with my CAD nominal. After looking closely at the part print, I noticed a direction arrow and a die pull arrow with a degree called out. This occurs in two separate locations on the print. How do I acclimate the part in PC-DMIS according to this callout?
Normally, at least that is how I;ve seen it, engineers include the draft in their CAD models. If you do not have the draft, you have to change the workplane, and measure as 2 lines to get the Angle. Or, you may measure as Planes, then get the Angle. Then visually make sure the draft is in the correct direction.
If you are given intersection points, you would also have to intersect either line or planes to get them.
Foe some reason I cant see your sketch well, it small. Not sure how to fix this.
1 degree of draft is .017 per unit of measurement. that's .017" if your unit is an inch and .017mm if your unit is a millimeter. The sine of the draft angle times the length will give you how much to add or subtract for your draft.
(yes .017 is an approximation but it's close enough)
Here are the 2 that are on the print, the third image is looking at the CAD, notice the nominal circle is projected off from the CAD. I'm wondering if this is why?
