hexagon logo
Register Sign in
  • Replies 21 replies
  • Subscribers 222 subscribers
  • Views 242 views
  • Users 0 members are here
Options
Related

help me measure it, how would u dimension it

pcdmisstudent
hi all
i got a measuring/construction/engineer/noob problem.
i have this small 40 degree, 2 degree conical thing, that is supposed to have a diameter 6.86mm where it is as smallest, and its supposed to be centered in the casted hole(D), and perpendicular to the plane(A)
i dont know how to measure it, since its a very small surface, and its also not cylindrical, its conical with a 2degree angle.
so i have to measure it as a cone. and then construct a circle using cone feature, but the results are very unsure.

the matching part has the exact same feature, except its internal, and it should run free over the tap thingy.
how can i measure it
or how would u else dimension it, so that the matching part fits.
ty all, thanks for ur feedback
Attached Files
Parents
  • Yes the centre would change. You're taking a fixed radius (so fixed diameter) circle, and best fitting that to your measured points - like you said putting a radius gauge in contact with the part. So if you use the wrong size radius gauge the centre will be off (unlike a radius gauge however, which would always be external to material, the fixed rad circle would have points inside and outside its circumference).


    With a 0.5mm tip diameter and a contact angle of 2° the amount you'd need to reduce the diameter is very small - less than half a micron! (0.0004).
Reply
  • Yes the centre would change. You're taking a fixed radius (so fixed diameter) circle, and best fitting that to your measured points - like you said putting a radius gauge in contact with the part. So if you use the wrong size radius gauge the centre will be off (unlike a radius gauge however, which would always be external to material, the fixed rad circle would have points inside and outside its circumference).


    With a 0.5mm tip diameter and a contact angle of 2° the amount you'd need to reduce the diameter is very small - less than half a micron! (0.0004).
Children
No Data
© 2024 Hexagon AB and/or its subsidiaries. Privacy Policy | Cloud Services Agreement