JPS6352964A - Method of cutting honeycomb structure - Google Patents

Abstract

PURPOSE:To make it possible to cut a honeycomb structure in a short time without producing burrs on the cut surface thereof and without deforming cells therein, by cutting the honeycomb structure with the use of a diamond grind stone which is rotated at a high speed while the honeycomb structure is moderately rotated. CONSTITUTION:A honeycomb structure 2 in which, for example, a corrugated sheet and a flat plate are rounded into a roll shape is moderately rotated at a speed of 200 rpm. while a diamond grind stone having a thickness of about 1.3 mm and a diameter of 200 mm or the like is rotated at a high speed of about 1,740 rpm. for cutting the honeycomb structure. Thus, it is possible to cut the honeycomb structure in an extremely short time at a low cost, and it is possible to prevent burrs from being produced on the cut surface of the honeycomb structure and to prevent cells in ths honeycomb structure from being deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for cutting a honeycomb structure, and more particularly, to a cutting method that can cut a honeycomb structure in a short period of time without causing any cracks.

[Prior Art 1 A honeycomb is a honeycomb-like tII structure in which hexagonal columns and other cell shapes are assembled. Honeycomb may be used as a body or as a core material for sandwich panels.

Honeycombs can have various properties depending on how they are used, and the former type of honeycomb, when used as a single core, has the characteristic that it has a particularly excellent rectifying effect when placed in a fluid. Because it is partitioned into small cells, its wall area is much larger than its volume, allowing for a large contact area with air and water, which gives it properties as a catalyst. When used as the latter sandwich panel, it has the characteristics of being lightweight and having high rigidity as a structural material.

The present invention mainly relates to the case where the former honeycomb is used as a single core.

Two methods are used to manufacture honeycomb: the expanded method and the corrugated method. The stretching method involves applying adhesive to the material in a line, cutting it to an appropriate length, stacking it in several pieces, applying pressure and heat to harden the adhesive, slicing it to an appropriate thickness and stretching it.
The honeycomb is formed into a desired shape. The corrugating process is usually applied to produce dense honeycombs that cannot be expanded.

First, the material is folded using a corrugated roll, adhesive is applied to the crest of the corrugation, and after stacking a large number of corrugated sheets, they are bonded by heating in a laminated manner with a load applied in the stacking direction. Furthermore, in the corrugation method, flat plates of the same width are stacked on top of a corrugated sheet that has been folded with a corrugate roll, and the corrugated sheets are rolled into a roll shape, with the corrugated peaks and troughs touching the flat plate. There is a method of manufacturing honeycomb.

The honeycomb structure manufactured in this way is cut to the required length, but the corrugation method, especially the honeycomb structure manufactured by overlapping corrugated sheets and flat plates and rolling them into a roll, is very difficult. Since a thin plate is used, conventional cutting methods would deform it or cause cracks on the cut surface, so conventionally it was cut by wire electrical discharge machining.

However, when cutting a honeycomb structure using wire electrical discharge machining, stress is not applied to the honeycomb structure and the honeycomb structure can be cut without deforming the structure, but it takes time to cut and the wire electrode The drawbacks are that it is highly consumable and very expensive.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems of the conventional cutting method for honeycomb structures. An object of the present invention is to provide a method for cutting a honeycomb structure that can cut a honeycomb structure in a short time without causing deformation of the honeycomb structure.

[Means for Solving the Problems] The gist of the method for cutting a honeycomb structure of the present invention is to cut the honeycomb structure with a diamond grindstone that rotates at high speed while rotating slowly.

[Operation] In the method of the present invention, since the honeycomb structure is rotated slowly, the diamond grindstone removes the burr on the cut surface. Furthermore, since the honeycomb structure is cut with a diamond grindstone that rotates at high speed, the honeycomb structure is not deformed and can be cut in a short time.

[Example] Examples of the present invention will be described to clarify the effects of the present invention.

As samples for cutting, a honeycomb structure was prepared by rolling a corrugated sheet and a flat plate into a roll lock, and the honeycomb structure was housed in a cylindrical case with an inner diameter of 130 mm and a wall thickness of 3III11. Cutting was carried out by the invention method, and the cutting time of each was measured. In addition, wire cut electric discharge machining uses a 0.2 mm diameter copper wire as a wire electrode, a power supply voltage of 150 V, and a wire feed speed of 5 I/s.
I went in.

In addition, in the method of the present invention, as shown in FIG.
The rotation speed of sample 2 is 2 Orpm, and the diamond grinding wheel is 1.
Cutting was performed at a rotational speed of 1740 rpm. After cutting the honeycomb structure sample, it was examined whether there were any cracks on the cut surface and whether or not the cells of the honeycomb structure were deformed. The results of 0 or more are shown in Table 1.

Table 1 From the results shown in Table 1, it was confirmed that the method of the present invention was able to cut a honeycomb structure in an extremely short time compared to the conventional method, and that there was no deformation of pars or cells on the cut surface. .

[Effects of the Invention] As explained above, the method for cutting a honeycomb structure of the present invention is to cut a honeycomb structure using a diamond grindstone that rotates slowly and at high speed, and is extremely efficient compared to conventional methods. It has the excellent effect of being able to cut a honeycomb structure in a short period of time, cutting costs are low, and there is no deformation of cracks or cells on the cut surface.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a honeycomb structure being cut with a diamond grindstone. 1...Diamond grindstone, 2...Honeycomb structure

Claims (1)

[Claims] (1) A method for cutting a honeycomb structure, which comprises cutting the honeycomb structure with a diamond grindstone that rotates slowly and at high speed.