关键词: 紧固件；扭矩；夹紧力

Abstract: In automobile assembly, the assembly quality of threaded fasteners will directly affect the assembly quality and driving reliability of the whole vehicle, so the calculation and check of its torque is very important. This paper discusses the calculation method and theory of clamping force and torque, combined with different tightening scenarios, this paper puts forward the torque calculation method and verification are proposed, which can be used for the anti loosing design of new products and the anti loosing check of known threaded fasteners, so as to effectively improve the design efficiency and ensure the tightening quality of products.

Key words: Fastener; Torques; Clamping force