Anti-loose internally threaded fastener
An internal thread and fastener technology, applied in the field of anti-loosening internal thread fasteners, can solve problems such as affecting assembly quality and efficiency, unreasonable design parameters, reducing contact stress, etc., so as to reduce manufacturing costs and prevent loosening reliability. Good, reduce the effect of plastic deformation
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[0007] Hereinafter, the present invention will be further explained with the drawings and embodiments.
[0008] Reference figure 1 , An anti-loosening internal threaded fastener, including an internal thread base, the internal thread shape provided on the internal thread base is: when the internal thread profile bevel angle is 38o, the diameter D 2 =D-0.42P, bevel inflection point diameter φD=D-0.48P, minor diameter D 1 =D-0.90P, the theoretical interference width is 0.12B, the theoretical interference height is 0.22Td, the theoretical failure distance is 0.098P, the pitch diameter position is 0.215P, the inflection point position is 0.24P; when the internal thread profile is 40o, Pitch diameter D 2 =D-0.43P, the diameter of the bevel inflection point φD=D-0.50P, the minor diameter D 1 =D-0.91P, the theoretical interference width is 0.12B, the theoretical interference height is 0.22Td, the theoretical failure distance is 0.098P, the middle diameter position is 0.215P, and the infle...
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