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Chamfer Measurements - Do you measure the height and width or the hypotenuse?

Jim Wynne

Jim Wynne

Staff member
Admin
#11
#11
Curtis317 said:
The angle is not specified. Only the length. I have looked all through Y14.5-2009 and see nothing that notes how the chamfer should be measured. Can someone post the relevant page from ISO 13715? Thank you all for your input
Click to expand...
Is this a chamfer or a countersink? A chamfer would be on an outside edge. ISO 13715 (or any other published standard) is irrelevant unless it's specified on the print. If you could post a the part of the drawing with the chamfer callout it might be easier to give advice.
 
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Curtis317

#12
#12
I uploaded an example. I posed this question to our design engineers. However they have not provided the standard that references how the chamfer should be measures
 

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Jim Wynne

Jim Wynne

Staff member
Admin
#13
#13
Curtis317 said:
I uploaded an example. I posed this question to our design engineers. However they have not provided the standard that references how the chamfer should be measures
Click to expand...
I can see why you're perplexed. I've never seen a chamfer dimensioned that way, and there's not much tolerance. For what it's worth, ANSI/ASME Y14.5M 1994 (an obsolete version but it's all I have at hand at the moment) says:

1.8.15 Chamfers. Chamfers are dimensioned by a linear dimension and an angle, or by two linear dimensions...
Where an angle and a linear dimension are specified the linear dimension is the distance from the indicated surface
of the part to the start of the chamfer.

Like I said earlier, the standard doesn't mean much if it's not referenced on the drawing, and even if it were, the means of callout the chamfer don't follow the requirement. Best to check with the customer, designer, or whomever might be able to make a definitive call.
 
C

Curtis317

#15
#15
Thanks for the Y14.5-2009 reference. I sent that page to our design engineers. We will see whether they can learn or not. Thanks to everyone for their input!:thanks:
 
J

jager

#16
#16
Measure the height and width of it, two measurements on the layout unless the print just shows one direction.
 
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