Involute Spline DIn 5480 - Help!!! 1

[madsd]

Hello,

I don't need if this has been answered before, but can you please tell how to calculate the min and max measurements, when you measure between to pins/balls? I have DIN 5480, parts 1, 2 and 15. In DIN 5480-2, I can find the nominal value in the tables, when you are measuring between 2 pins, but i cannot seem to find the formula to calculate to calculate the min and the max values

I have seen some earlier posts, where "gearguru" answered a similar question, but he only showed the values, not the calculations

Any help would be appreciated.

Thank you

 

[dinjin]

Involute splines and involute gears use the same
calculations. You do have to use a pin diameter
large enough to not bottom out in the roots.

 

[madsd]

Yes thank you, I know how to calculate the pin size and the measure between them. I just don't know how to specify the correct tolerance.

 

[spigor]

You need to get this:

http://www.beuth.de/langanzeige/DIN-5480-1/en/81839056.html&bcrumblevel=2&SearchID=243792795

If you click "Show contents" you will see it tells you how to calculate fits and tolerances.

 

[madsd]

I have the standard in front of me right now and either I have gone blind or looked at it too long, but I can't find the calculations.
Can anyone tell SPECIFICALLY how to calculate the tolerances.
But thanks to dinjin and spigor for the speedy replies.

 

[madsd]

Hello again,

i was looking at the new standard and it turns out that if you use the old standard DIN 5480-14, it's much easier to find

 

[carburized]

In spline calculation, it is shown in standards what is called a K value. First you calculate the nominal value of spline between pins and then multiply k with the tolerance value. Subtract and add these values to your nominal value to calculate min and mas value.

http://www.gearsandbearings.com

 

[huckelberry]

Your also going to need to know the class of fit. 9H, 8f etc.

 

[gearcutter]

Pages 23 & 24 in DIN 5480-1 clearly show how this is done. All the equations and charts are there for you to calculate the required tolerances.

Ron Volmershausen
Brunkerville Engineering
Newcastle Australia

http://www.aussieweb.com.au/email.aspx?id=1194181

 

[gearcutter]

In DIN 5480-1986 & 2006, all the equations and charts are in Part 14.
The choice of interference, transition and clearance fits are given.
The standards even show examples of how the tolerances are calculated.
Perhaps you could show us 'exactly' which parts you are having trouble with.


Ron Volmershausen
Brunkerville Engineering
Newcastle Australia

http://www.aussieweb.com.au/email.aspx?id=1194181