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Creating & Measuring a circle on a cylinder, to find its angle to a plane.

Hi guys, im very new to Pcdmis and CMM so bare with me Slight smile I really need some help with this one.

Got a pipe. cylinder 16mm.
5 holes, 8.2mm

Problem - struggling to find away to create a circle on a cylinder, as a circle on a cylinder wont be flat.. Anyway of doing this?

I need to find out the angle of each of these holes to table plane. Thus should be 0 degree +/-1.5. basically holes pointing straight up. I can do this, just need to get these darn circles perfected on the cylinder....







Parents
  • Easiest way I found, but have to follow directions close. If you open up auto circle, click on the circle you want to measure. Don't click create though. Now if you are looking straight down at the circle you created, put the cursor on one of your hit points that is neither the beginning nor the end point. hold and drag that point one way or another just a little bit. This puts the circle into a more custom mode. You can now turn your CAD so you are looking at the cylinder ALMOST sideways. From there you can drag any of the points up and down in the depth direction to put them where you need them. Hope that makes sense. Otherwise you would need to turn on the "show hits" toggle at the end of your auto circle code and edit each point individually. this also works for cylinder. Not sure how thick the pipe walls are but if they don't have much of a wall surface, be prepared to have a lot of variation in your angle.

    Edit: Actually doesn't work with cylinders, you'd have to measure two separate circles and construct a cylinder.
Reply
  • Easiest way I found, but have to follow directions close. If you open up auto circle, click on the circle you want to measure. Don't click create though. Now if you are looking straight down at the circle you created, put the cursor on one of your hit points that is neither the beginning nor the end point. hold and drag that point one way or another just a little bit. This puts the circle into a more custom mode. You can now turn your CAD so you are looking at the cylinder ALMOST sideways. From there you can drag any of the points up and down in the depth direction to put them where you need them. Hope that makes sense. Otherwise you would need to turn on the "show hits" toggle at the end of your auto circle code and edit each point individually. this also works for cylinder. Not sure how thick the pipe walls are but if they don't have much of a wall surface, be prepared to have a lot of variation in your angle.

    Edit: Actually doesn't work with cylinders, you'd have to measure two separate circles and construct a cylinder.
Children