benensky
Mechanical
- Dec 15, 2003
- 14
Hi,
I am new to this forum. Hope you can help me.
We were bought by a European company and I work with ISO drawings at times and they tolerance there shafts 10 -2/-4. I have never seen double negative dimensioning. In the USA I was taught that if the fit of a 10unit shaft is -2 to -4 to draw it at 8 units and tolerance it at 0/-2. Likewise for holes. Is this standard for ISO drawings to double negative or double positive tolerances on features?
I would like to get this right since soon we are to draw to ISO standards and the guidebook they gave us is not really clear on this.
I am new to this forum. Hope you can help me.
We were bought by a European company and I work with ISO drawings at times and they tolerance there shafts 10 -2/-4. I have never seen double negative dimensioning. In the USA I was taught that if the fit of a 10unit shaft is -2 to -4 to draw it at 8 units and tolerance it at 0/-2. Likewise for holes. Is this standard for ISO drawings to double negative or double positive tolerances on features?
I would like to get this right since soon we are to draw to ISO standards and the guidebook they gave us is not really clear on this.
