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Can anybody tell me the minimum thinkness at the top of RIBS in plastic part

By vinoth on 31 May 17:39 4 answers 0 comments

Can anybody tell me the minimum thinkness at the top of RIBS in plastic part. We should maintain root thickness 50 to 60% of nominal, but in some case we need to increase the height of rib,that time what should be the minimum thickness we should maintain at the top of the RIB

4 answers

  • k.nagaraj
    k.nagaraj over 1 year ago

    Rib thickness should never exceed 66% of the nominal wall thickness.if we maintain between 50 to 66 % then we will never have problem of sinkmark...and rib ht should never exceed 3 times the nominal wallthickness

  • Vinay Kumar
    Vinay Kumar over 1 year ago

    Sorry for the late reply. The minimum thickness as far as I know for the top of any engineering feature should be a minimum of 0.8mm.

  • Sunny Sonzz
    Sunny Sonzz about 3 years ago

    min rib height must be btw. 1.5t and maximum 5t according to that you can give your rib thickness w.r.t the draft angle 0.5 - 2 degrees normally

  • k.nagaraj
    k.nagaraj over 1 year ago

    Rib thickness should be 50% of part thickness that is if part thickness is 2.5 mm than rib thickness at the bottom should be 1.25 and by applying a draft to this rib it becomes 0.8 to 0.9 mm at the top

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