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Limits and Fits
jack_lavender
Member Posts: 4 ✭✭
In my line of work (machine design) I really miss limits and fits.
There is a standard way of dimensioning things. The standards are SO 286-1 and ANSI B4.2 and are recognised worldwide. They are widely appliccable, speed up dimensioning and reduce errors a great deal. They would also be very simple to add to the dimensioning toolbar.
Basically, attached to your nominal size (eg10mm) you have a letter and a number and that defines whether that dimension should be interference/ in-between/ or clearance and how wide the acceptable range is. For example an off-the-shelf ground g6 pin will fit beautifully into an H8 reamed hole. Doesn't matter what size, if you specify those limits the job of tolerancing is done for you and the parts will fit.
There is a standard way of dimensioning things. The standards are SO 286-1 and ANSI B4.2 and are recognised worldwide. They are widely appliccable, speed up dimensioning and reduce errors a great deal. They would also be very simple to add to the dimensioning toolbar.
Basically, attached to your nominal size (eg10mm) you have a letter and a number and that defines whether that dimension should be interference/ in-between/ or clearance and how wide the acceptable range is. For example an off-the-shelf ground g6 pin will fit beautifully into an H8 reamed hole. Doesn't matter what size, if you specify those limits the job of tolerancing is done for you and the parts will fit.
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Comments
https://forum.onshape.com/discussion/comment/43593
https://forum.onshape.com/discussion/18331/hole-wizard-including-iso-286-2-tolerances
https://forum.onshape.com/discussion/18601/iso-286-tolerances-in-drawings