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[CN 201910090072.2] Fastening device and method for mechanical press
[CN 201910090072.2] A Fastening Device and Method for Mechanical Press Title: A Fastening Device and Method for Mechanical Press Application Number: CN 201910090072.2 Applicant: Rongcheng East China Forging Machine Tool Co., Ltd. Application Date: 2019-1-30 Patent Type: Invention Application for a Fastening Device and Method for Mechanical Press to Connect a First Component and a Second Component, the first member and the second member each have an internal thread hole, including a connecting piece, with an external thread of the internal thread hole corresponding to the specification, a heating unit for heating the connecting piece, and a stretching unit for stretching the connecting piece along the axial direction of the connecting piece, the fastening steps of which are as follows: the connecting piece is connected to the first member and the second member by mating the external thread with the internal thread hole; the connecting piece is heated by the heating unit; the connecting member is stretched in an axial direction of the connecting member by a stretching unit. By heating the connecting piece, the principle of thermal expansion and contraction of metal and the mechanical stretching prestress deformation technology work together to increase the pre-tightening force between the connecting piece and the screw sleeve. In addition, the fan-shaped locking pressure block is set to reduce Damage to the thread teeth of the double-ended stud, the locking key plate connects and locks the connecting rod cover and the nut, which enhances the fastening effect.
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