draft angles with cylindrical corner radius
draft angles with cylindrical corner radius
(OP)
If a drawing note specifies a profile feature to have a draft angle "all around", shouldn't any radius on the profile also have a draft angle, essentially making it conical rather than cylindrical?





RE: draft angles with cylindrical corner radius
If the radii are interpreted as portions of right circular cylinders, then they can't also be tangent to drafted surfaces, so you wind up with some awkward transitions.
Mike Halloran
Pembroke Pines, FL, USA
RE: draft angles with cylindrical corner radius
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: draft angles with cylindrical corner radius
In this instance the customer has also provided a model.
The instruction for this job/ customer is "build to print" and a note on the drawing states "machined as shown".
- Pictorially, the radii appear to be cylindrical
- The model provided has cylindrical radii
- The note, draft angle "all around" contradicts the model provided
My intent is to machine cylindrical radii "as shown" and modeled since the note "all around" contradicts the model. Technically, it would be wrong either way I choose, since I will be disregarding the note "all around" on a drawing that takes precedence over the model.
RE: draft angles with cylindrical corner radius
Mike Halloran
Pembroke Pines, FL, USA
RE: draft angles with cylindrical corner radius
Harold G. Morgan
CATIA, QA, CNC & CMM Programmer
RE: draft angles with cylindrical corner radius
Most customers understand physical models in their hands much better than they understand visualizations of models on a screen or on paper.
Mike Halloran
Pembroke Pines, FL, USA
RE: draft angles with cylindrical corner radius
RE: draft angles with cylindrical corner radius
"Just look for the lowest number on the screen..." is their mode of operation these days.
Proud Member of the Reality-Based Community..
To the Toolmaker, your nice little cartoon drawing of your glass looks cool, but your solid model sucks. Do you want me to fix it, or are you going to take all week to get it back to me so I can get some work done?