Method and mould for manufacturing floor spring rotating shaft head

Abstract

The invention provides a method and a mould for manufacturing a floor spring rotating shaft head, belonging to the technical field of mechanical engineering. The method solves the problems such as low production efficiency, high cost, weak market competitive power of products and the like in the existing method for manufacturing a rotating shaft. The method for manufacturing the floor spring rotating shaft head includes the steps of blank tooling, cold extrusion, surface treatment, etc. A mould for forming the floor spring rotating shaft head comprises a lower die, an upper die, a pedestal, aradial positioning mechanism and an axial positioning mechanism. A mould for trimming concave shoulder bottom surfaces of the floor spring rotating shaft head comprises a positioning mould and a forming mould, wherein flattening surfaces capable of corresponding to the concave shoulder bottom surfaces in position and structure one by one are arranged on one end of the forming mould, and a placinghole through which a workpiece head can penetrate is also arranged on the forming mould. The floor spring rotating shaft produced by the manufacturing method has the advantages of being low in production cost, beautiful in appearance and strong in market competitive power. The mould for forming the floor spring rotating shaft head has the advantages of being reasonable in design and convenient inuse.

Description

Technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a floor spring, in particular to a method for manufacturing the head of a floor spring shaft. The invention also relates to a molding die, in particular a molding die for the head of a floor spring shaft and a smoothing die for the bottom surface of the concave shoulder of the head of the floor spring shaft. Background technique [0002] The floor spring is also a hydraulic door closer, which can be applied to almost all wooden, steel, aluminum alloy doors and frameless glass doors using glass door clips. [0003] At present, there are many types of floor springs on the market. The Chinese patent document once published a floor spring sealing structure [Chinese Patent No.: ZL200620116212.7; Authorized Announcement No.: CN2900733Y]. The local spring includes key components such as camshaft, upper cover, base and bearings. All floor springs have a rotating shaft whose head ...

AI Technical Summary

Problems solved by technology

A comprehensive analysis of the above production methods shows that for the processing of this product, the use of friction press forging has the problem of high processing costs

The milling process has the defects of slow processing speed and low precision. If the surface roughness and precision need to be improved, multiple milling or polishing treatments are required.

Therefore, there are problems such as low production efficiency, high cost, and weak product market competitiveness.

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