unusual drawing symbol on German drawing
unusual drawing symbol on German drawing
(OP)
Has anyone ever come across the symbol-usually is pointing to a corner of a part?
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unusual drawing symbol on German drawing
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RE: unusual drawing symbol on German drawing
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: unusual drawing symbol on German drawing
RE: unusual drawing symbol on German drawing
This may help you:
http://files.engineering.com/getfile.aspx?folder=0...
The snapshot is from ISO 13715:2000 "Edges of Undefined Shape". I am pretty sure there is German version of that standard too.
RE: unusual drawing symbol on German drawing
----------------------------------------
The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: unusual drawing symbol on German drawing
http://files.engineering.com/getfile.aspx?folder=0...
RE: unusual drawing symbol on German drawing
ISO defines an undercut as any deviation from ideal form which removes material from a corner, either external or internal.
So, yes they are per ISO's definition.
Though I would agree that using the term 'undercut' to describe an external fillet or chamfer is not intuitive at first glance.
RE: unusual drawing symbol on German drawing
https://res.cloudinary.com/engineering-com/image/upload/v1504853183/tips/ISO_workpiece_edges_symbol_elements_bccrzy.pdf
https://res.cloudinary.com/engineering-com/image/upload/v1504853205/tips/ISO_workpiece_edges_examples_o4gdhn.pdf
Season
RE: unusual drawing symbol on German drawing
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: unusual drawing symbol on German drawing
As I said I agree that it's not an intuitive definition- but if you work in ISO a lot (as I do) it becomes a very convenient-- as any reduced-material corner/edge form error uses the same terminology, regardless of the surrounding geometry. This makes explaining what you want, and defining problems across language barriers, much easier than it might otherwise be.
On some types of parts, it can also make dimensioning drawings much cleaner than the equivalent part would be if dimensioned per ASTM- every corner can use the same symbols and conventions, and that one symbol can contain a lot of information.
The root of the usage of 'undercut' to describe lesser material deviations from ideal geometric form is from the design of casting tools.
RE: unusual drawing symbol on German drawing