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Method for making spring shaft mounted in eyeglass elastic hinge

A technology of elastic hinges and manufacturing methods, which is applied in glasses/goggles, optics, instruments, etc., can solve problems such as large diameter errors, deformation of hinge holes, and product performance degradation, and achieve long service life, tight fit, and good performance. Effect

Inactive Publication Date: 2006-10-25
浙江康华眼镜有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The hinge shaft in the current spring shaft is generally formed by stamping. Because the diameter of the hinge hole is very small, the stamping process is very demanding. However, the current stamping technology level is not high, so the processing thickness of the hinge shaft is limited.
Moreover, the hinge hole of the hinge shaft formed by stamping will have deformation, burrs and fracture marks on the surface of the inner hole after stamping. The cylindrical tail also has the disadvantages of large diameter error and polygonal angle. Therefore, the spring shaft After assembly, there will be unsmooth fit and heavy wear, resulting in product performance degradation and directly affecting the service life of the glasses

Method used

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  • Method for making spring shaft mounted in eyeglass elastic hinge
  • Method for making spring shaft mounted in eyeglass elastic hinge
  • Method for making spring shaft mounted in eyeglass elastic hinge

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Embodiment Construction

[0027] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0028] As shown in the figure, a metal material plate 26 with a high material utilization rate is prepared. The single-process blanking die and the feeder are installed on the blanking machine, and then the blank of the hinge shaft 1 is punched out from the metal plate 26 along the closed contour at one time, so that the shape of the blank is the same as the finished hinge shaft, except for the tail. 13 has not yet been formed, at this time the tail 13 is in the shape of a square column, the head 21 and the body 22 have been formed at one time, and the surface of the shearing surface 25 has no traces of multiple punching. Then use ordinary metal cutting machine tools, such as small bench drills and instrument milling with a drill die, and then use the good drilling performance of the drill bit to drill the hinge hole 20 that meets the technical require...

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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.

Description

technical field [0001] The invention belongs to the technical field of glasses accessories manufacturing, and particularly relates to a method for manufacturing a spring shaft installed in an elastic hinge of glasses. Background technique [0002] As is known to all, elastic hinges are widely used in spectacle frames due to their good performance, which improves the convenience and comfort for users to wear spectacles. The spring shaft is the key component of the elastic hinge, and the rationality and scientificity of its production method will directly affect the cost performance of the elastic hinge. [0003] The hinge shaft in the current spring shaft is generally formed by stamping. Due to the small diameter of the hinge hole, the stamping process is very demanding, and the current stamping technology level is not high, so the processing thickness of the hinge shaft is limited. In addition, the hinge hole of the hinge shaft formed by stamping w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C5/22
Inventor 高克胡林友
Owner 浙江康华眼镜有限公司
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