Constructing a point onto a cone

[FFGOOCH]

I have a cylinder running at a 40 degree angle toward the center of a cone. I have measured the 4 cylinders and I am trying to get the center line of the intersection to know if the diameter on the surface of the cone is correct.

I have tried to construct a point where they meet but it goes to the point of the cone.

which would be my zero point

I want to know the diameter of where they break out. I was going to construct a point at each one them construct the circle on the 4 point to get the diameter.

This is not working so is there a better way or how do I construct the points

Thank you

[Schrocknroll]

Could you upload a sketch to better describe the situation. You start by saying you have a cylinder, then you speak of measuring the 4 cylinders. I can't visualize what your after.

[FFGOOCH]

cyclinder.jpg
The holes come through onto the chamfer and I need to know the break out diameter

Hope picture helps

[RIDER]

Are you wanting the gage diameter where the center of the cylinders intersect the cone?
Construct pierce points between the cylinders and the cone. Then construct a circle out of the pierce points.

[Schrocknroll]

Are you wanting the gage diameter where the center of the cylinders intersect the cone?
Construct pierce points between the cylinders and the cone. Then construct a circle out of the pierce points.

When doing pierce points on a round object like a cone, be mindful that the vector of the line or cylinder doing the piercing will make a difference on which side of the cone the point is constructed. At least I know this is a factor with lines piercing cylinder, so I assume it would be a factor here as well.