Design calculation of the conical springs

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Question Spring Newbie 2018/7/18(Wed) 8:50

I have a question about the design calculation of the conical springs.

In the calculation examples, when compressed by 7.56 mm, the spring’s coils come into contact because -0.5>0. Could you confirm this? I thought the greater-than sign is not correct.
Also, could you please tell me the formula for calculating the solid height of the conical springs?

Answer Tokai Spring 2018/7/18(Wed) 15:22

Spring Newbie, thank you for posting!

Thank you for pointing out the greater-than sign in the calculation example. It should be -0.5<0.

Regarding the solid height of the conical springs, I will demonstrate the contact-type as an example!
Solid height = Free height - Total deflection = 16 x Solid load x Number of active coils x ((Maximum mean diameter / 2) ^ 4- (Minimum mean diameter / 2) ^ 4 / Lateral elastic coefficient x Wire diameter ^ 4 x (Maximum mean diameter / 2-Minimum mean diameter / 2))

The calculation formulas for conical springs are complicated, so if you need a detailed calculation method, contact us and we will send you a separate document ♪ Thank you!!!

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