Machining method of thin-wall honeycomb core material curve machining molded surface

Abstract

The invention discloses a machining method of a thin-wall honeycomb core material curve machining molded surface, and aims to provide a honeycomb machining method with high milling efficiency and capable of prolonging the life of a special honeycomb combined milling tool. The machining method is realized through the following technical scheme: when a double sided tape fixing state at the earlier stage of honeycomb machining is good, the special honeycomb combined milling tool with a conical disc return milling tool is changed for cutting; the rotating direction of the special honeycomb combined milling tool is changed; the conical disc return milling tool for feeding by a wedged angle of 30-45 degrees through high-speed rotation is used for cutting roughing; according to an anticlockwise tool rotating mode in the tool rotating direction, the downward pressure is applied to a honeycomb thin-edge area (1) through anticlockwise rotation; the part, easy to be pulled and damaged, of the thinnest honeycomb edge of the honeycomb bottom cutting profile is firstly machined; and after the honeycomb thin-edge area (1) of a NOMEX honeycomb part blank is machined, the sequential gradient machining is performed in (2-6) thickness direction of the thick-edge area cutting profile layer by layer, and the other parts are machined.

Description

technical field

[0001] The invention relates to a processing and manufacturing process of a honeycomb core material Nomex honeycomb part in the mechanical field, in particular to a processing method of a thin-walled aramid paper-based honeycomb core.

[0002] technical background

[0003] As a kind of porous material, honeycomb material is very different from solid material. Its mechanical properties depend not only on the properties of the matrix material itself, but also on the geometric topology of the microscopic pores of the honeycomb material and the shape of the honeycomb cells. The structural parameters of the local characteristic units affect the macroscopic mechanical properties of the honeycomb, and the honeycomb core materials of different cells have different properties. Aluminum honeycomb foam or glass cloth sandwich is usually used as the core material in aircraft structure. The honeycomb has the advantages of high compression modulus and light weight. They are...

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