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Decimal Places required with Basic Angles

Decimal Places required with Basic Angles

Decimal Places required with Basic Angles

(OP)
How is it determined as to the number of decimal places when using basic angles and decimal parts of degree?

(Are trailing zeroes necessary?)

RE: Decimal Places required with Basic Angles

By the application.
Use as many places as necessary. (Rarely more than 2)
Do not use trailing zeros.

RE: Decimal Places required with Basic Angles

If you have 7 features equally spaced you can just show the quotient in the box [360°/7] to specify the basic angle.

Paul
 

RE: Decimal Places required with Basic Angles

I always match the basic dim decimal places to its tolerance decimal places, regardless of trailing zeros.

Chris
SolidWorks/PDMWorks 08 3.1
AutoCAD 06/08
ctopher's home (updated Jul 13, 2008)

RE: Decimal Places required with Basic Angles

ringman,

   I would rather the trailing zeros were not displayed, but SolidWorks does not have a setting for that.   Usually, I set it to one decimal place, just in case the decimal is something other than zero.

                         JHG

RE: Decimal Places required with Basic Angles

I would use only as many decimal places as necessary.  While Y14.5 specifies that basic inch dimensions contain the same number as the FCB, it does not address basic angle dimensions.

Believe it if you need it or leave it if you dare. - Robert Hunter
 

RE: Decimal Places required with Basic Angles

SW does have a setting to remove trailing zeroes.

Since basic dimesnsions have no tolerance, one only needs as many decimal places as necessary to get the precision one needs.  Trailing zeroes have no effect on tolerances in feature control frames.

RE: Decimal Places required with Basic Angles

On most drawings it does not matter because the angle tol is driven by the title block,  I normily keep it set to one place.  The only time that I might see it mattering if there is a ± to the angle.  If it does matter I would use a slop of some other way of dim the part.

Chris

"In this house, we obey the laws of thermodynamics." Homer Simpson

RE: Decimal Places required with Basic Angles

MotorVib, the OP is talking about 'Basic' dimensions so the title block tol isn't relevant, it's also not +-.

KENAT, probably the least qualified checker you'll ever meet...

RE: Decimal Places required with Basic Angles

TheTick,

   On SW2007, I can remove trailing zeros from metric dimensions, which allows me to conform to ASME Y14.5M-1994.  It does not seem to allow the removal of trailing zeros from angles.  

                       JHG

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