chamfer
chamfer
(OP)
I have a cylindrical part with a chamfer at each end.
Is the correct callout for this "2X 0.031 X 45°" or does each chamfer need to be noted individually?
Thanks.
Is the correct callout for this "2X 0.031 X 45°" or does each chamfer need to be noted individually?
Thanks.





RE: chamfer
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Heckler
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RE: chamfer
RE: chamfer
Chris
Sr. Mechanical Designer, CAD
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ctopher's home site (updated 06-21-05)
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RE: chamfer
RE: chamfer
RE: chamfer
Chris
Sr. Mechanical Designer, CAD
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ctopher's home site (updated 06-21-05)
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RE: chamfer
It is implicit that the chamfer goes "all around" on a cyl.
Wes C.
RE: chamfer
You have two pipes to need to be welded end to end. You would call that weld out on the drawing with an all around weld symbol in the leader line. Now why would you call out an all around symbol there? If this drawing is a Section View and it displays the weldmet the customer who reads this drawing will clearly understand that the weld is all around due to the fact that the V-Grove (standard pipe weld) points to the axis (two V-Groves one above and below axis). This example is much like the chamfer. The end user in both examples can tell the outcome without the all around symbol. If you can use the all around symbol with the weld symbol you should be able to use it with the chamfer. It keeps drawing continuity makes the drawing look esthetically pleasing.
RE: chamfer
The objective is to keep a drawing as simple as possible while clearly and fully defining the item to be made.
RE: chamfer
RE: chamfer
This is why a little knowledge of machining is helpful when creating drawings. If you want to chamfer a pipe, would you chamfer a part of it? No, it would be chamferred with a tool all around. It is obvious the chamfer is all around. A weld can be welding in sections, therefor you probably want to call out all around if that is what the design calls for. I have seen pipe that was tack welded in 4 places around the O.D., but was not used for structural support or fluids, but most of the time would be welded all around.
If you want to add a countersink callout/dim, would you add "all around"? No.
I use SolidWorks. On a dwg, if you want to dim a chamfer, there is not an option to add an "all around" symbol, because it is not standard.
Chris
Sr. Mechanical Designer, CAD
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ctopher's home site (updated 06-21-05)
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RE: chamfer
Flores
RE: chamfer
For instance. I would typically show a view with hidden lines to show a thru hole. Then when dimensioning the diameter or thread callout on the whole I wouldn't have to include any information about the depth because it's right there in plain sight.
Another. For a chamfer around a circular profile, as long as it's visually represented in way that implies a full run all the way around the diameter of the part only the size of the chamfer is neccessary.
That's the way I was taught to do drafting. Be thorough, be clear, but concise. Do not be redundant.
RE: chamfer
Also, If the hole or thd does not go thru, it would need a depth called out...if it shows going thru or not.
Chris
Sr. Mechanical Designer, CAD
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RE: chamfer
I have to disagree with your last post. Para 1.8.9 states "Where it is not clear that a hole goes through, the abbreviation THRU follows a dimension." This leads me to believe that if the drawing clearly shows a hole going through, then "THRU is not required.
RE: chamfer
I believe he's saying that if you've got a thru hole that is partially threaded that you need some indication of the depth of the thread even though the picture might show a thru hole... In which case he's correct.
RE: chamfer
I'm having a very busy morning.
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
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RE: chamfer
RE: chamfer
Chris
Sr. Mechanical Designer, CAD
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ctopher's home site (updated 06-21-05)
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RE: chamfer
RE: chamfer
The goal of any drawing is clear, concise communication. Views, dims, tols, notes, etc should be chosen with that in mind. After doing your best to accomplish that including the application of industry and company standards, there is a simple test to see how well you've done. If the fabricator doesn't understand the drawing and calls with a question, the drawing is incorrect or incomplete.
Regards,
RedPen
Senior Designer/Lead Checker
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RE: chamfer
RE: chamfer
Chris
Sr. Mechanical Designer, CAD
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ctopher's home site (updated 06-21-05)
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RE: chamfer
I will agree with that statement (sheet metal being an exception)... with the stipulation that even if solidworks DOES like it, sometimes it CAN'T be machined either.
Wes C.
RE: chamfer
The model can work, but depends on how the drawing is dimensioned if some features can be machined or inspected.
sorry, I'm not thinking straight today...too much going on...1 more hour
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716