Mirror Parts
Mirror Parts
(OP)
Hello,
What is the proper way to Dimension and Tolerance "Mirror" parts? Should Mirror Parts need to be completed D&T as any other part or is it sufficient to show only D&T that is different from the Original Part or is it somewhere in between.
Thanks in advance
What is the proper way to Dimension and Tolerance "Mirror" parts? Should Mirror Parts need to be completed D&T as any other part or is it sufficient to show only D&T that is different from the Original Part or is it somewhere in between.
Thanks in advance





RE: Mirror Parts
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: Mirror Parts
RE: Mirror Parts
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: Mirror Parts
If there are differences between the parts, they are not true mirrors. In this case, I have seen it done in a similar way, with the different details noted as XXXX-1 only or XXXX-2 only (-1 and -2 being the preferred method for numbering opposite parts). I don't know how closely this follows the latest standard.
RE: Mirror Parts
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: Mirror Parts
That method is classic aerospace. I have a copy of a LMAO design standards that lists this (suffix indentifier) method, or mirrored componets.
It is also common to our companies drawing practices. Based on Mil-std-100 (now ASME Y14.100-2000.)
Wes C.
RE: Mirror Parts
Do you know what section in Y14.1? I must have overlooked it.
thanks
Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
RE: Mirror Parts
In this case, can I just specify three datums for the first one and put a note on the mirrored one?
Or do I need to exculsively define my 6 datums (3 for each). And dimesions everything of that.
Thank you all
RE: Mirror Parts
GunT - If you are drawing the mirrored part, then specify the datums directly, if you are only calling out (-2 OPP) Then obviously there would be no need to define the datums for the second part.
If the part is a true mirror, there is no need to draw again. This comes from the "don't duplicate work" idea behind these drawing practices. I say, feel free to call it out as:
-1 PART / -2 PART (OPP)
Wes C.
RE: Mirror Parts
RE: Mirror Parts
It would be redundant to do so, from what I can tell of the situation. Unless your symetry is very unusual, the mechanic making the part would be just fine with the callout.
Wes C.