Title: Method for making spring shaft mounted in eyeglass elastic hinge
Application Number: 200610050838 Application Date: 2006.05.19
Publication Number: 1851529 Publication Date: 2006.10.25
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G02C5/22
Applicant(s) Name: Zhejiang Kanghua Glasses Co., Ltd. Address: 317604
Inventor(s) Name: Gao Kehua
Attorney & Agent: xu guanshou
Abstract:
     The present invention refers to manufacture method for spring shaft fit on spectacle elastic hinge, belonging to spectacle fittings technique of manufacture field. Said spring shaft consists of at least one hinge axis, one fixed part, and one elastic piece. The manufacture process contains 1, blanking: blanking out hinge axis outline on metal sheet, 2, drilling: drilling hinge hole at hinge axis header, 3, turning: turning hinge axis tail into cylinder shape, 4, heading: cold heading hinge axis tail end. The obtained spring shaft hinge hole has no deformation, burr and surface fracture phenomena, with high performance, long service life, convenient and comfort for user.
Time: 10