JP2829761B2 - Cutting method of honeycomb core - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for cutting a honeycomb core. That is, the present invention relates to a honeycomb core cutting method in which a cutting target portion of a honeycomb core is cut by a cutter as predetermined.

“Prior art” A honeycomb core is a flat aggregate of hollow columnar cells in which cell walls are formed by a thin foil-shaped base material. It is widely known that it is a flexible material. Conventionally, the cutting of such a honeycomb core is generally performed by a method in which the honeycomb core is directly mounted on a work table or the like, and the cut portion is cut by a cutter.

The honeycomb core was immersed in a solution of polyethylene glycol in advance, and once cured and dried,
A method of performing a cutting process has also been performed. According to this method, it was necessary to wash and remove polyethylene glycol from the honeycomb core after the fact.

"Problems to be Solved by the Invention" The following problems have been pointed out in such conventional examples.

First, a conventional general method of cutting the above-mentioned honeycomb core as it is is as follows.

First, there is a problem in that the cut surface of the cut honeycomb core is inferior in surface accuracy.

That is, when the blade of the cutter hits the cutting target portion of the honeycomb core during the cutting process, the honeycomb core is a flexible material.In particular, when the honeycomb core has a low density, the cell wall of the portion is cut due to insufficient rigidity and strength. It is pressed carelessly and escapes and bends as if it were taken by the blade,
Eventually, the surface was cut, but the surface accuracy of the cut surface was poor. In other words, the cell wall of the cutting surface falls, crushes, burrs, and other defective deformations occur, and the sharpness and workability of the cutting surface are poor, so that high-precision cutting cannot be realized. There was also a problem with the adhesiveness.

Second, the durability of the cutter and its drive motor has been associated with these problems. That is, during the cutting process, the blade of the cutter inadvertently presses the cell wall of the honeycomb core as described above, so that the load applied to the cutter and the drive motor increases by that amount, and the temperature rise of the cutter and the remarkable burning occurs. Thus, there has been a problem in their durability.

Third, in order to avoid these first and second problems,
It was pointed out that it took a lot of time. That is,
In recent years, the operation control of cutting using a computer or the like has been widely performed in order to realize high-precision cutting, but as described above, the cutter blade inadvertently pressed the cell wall of the honeycomb core during cutting. In this case, that is, when the load on the cutter and the drive motor increases, it is necessary to change the program to reduce the number of rotations. Also, depending on the situation,
There is a problem that it takes a lot of man-hours such as switching to manual manual operation.

In the conventional general method, such first, second,
A third problem was pointed out.

Next, according to the latter method described above, the honeycomb core is immersed in a solution of polyethylene glycol once, cured, and then cut.
Although the second and third problems were considerably solved, the following problems were newly pointed out.

Fourth, the work of cleaning polyethylene glycol and the like is very troublesome, and there is a fatal defect in cost. In other words, the dipping and drying of the honeycomb core in a solution of polyethylene glycol in advance, and the washing and removal of polyethylene glycol after cutting, etc., are very troublesome.

 In the prior art, such a point was pointed out.

The present invention has been made in view of such circumstances, and has been made to solve the problems of the above-described conventional example, and performs cutting after previously filling each cell of a portion to be cut with a hard foamed plastic material. In particular, by cutting a hard foam plastic material in an integrated block shape against a thin foil cell wall, the material is finely cut into the shape of each cell, pressed into each cell and filled, and then subjected to cutting. By doing so, firstly, the surface accuracy of the cut surface is excellent, and secondly, the cutter,
Thirdly, the driving motor is excellent in durability,
Fourth, it is an object of the present invention to propose a method for cutting a honeycomb core which is excellent in cost.

"Means for Solving the Problems" The technical means of the present invention for achieving the object is as follows.

This method for cutting a honeycomb core includes the following cutting preparation step, cutting step, and removal step.

In the cutting preparation step, a hard foamed plastic material is filled in each cell of a portion to be cut into a honeycomb core which is a planar assembly of hollow columnar cells. In the cutting step, a portion to be cut of the honeycomb core is cut as specified by a cutter together with the filled hard foamed plastic material. In the removing step, the hard foamed plastic material that has been filled and remained after cutting is
Afterwards it is removed from the honeycomb core.

And in such a honeycomb core cutting method, the honeycomb core is formed of a planar aggregate of a large number of hollow columnar cells each partitioned into an independent space by a cell wall, and a thin foil of aluminum or the like. A cell wall is formed of a metal substrate having a shape, and is made of a flexible material having flexibility.
Further, the rigid foamed plastic material is excellent in lightness, workability, reinforcement, and the like.

Then, in the cutting preparation step, the continuous rigid block of the foamed plastic material is pressed against each of the cell walls from the cell end face side against the honeycomb core. Accordingly, each of the thin-walled cell walls of the honeycomb core is finely cut into the shape of each of the cells, and each of the finely cut pieces is filled into each of the cells in an independent state by press-fitting. You.

Therefore, in the honeycomb core made of a flexible material having flexibility, the rigidity / strength of each cell wall is improved by filling each of the cells with the hard foamed plastic material,
It is in a state where the flat shape is firmly held,
It proceeds to the above-mentioned cutting process.

"Operation" The present invention operates as follows because it is constituted by such means.

First, a hard foamed plastic material is filled in each cell of a portion to be cut of a honeycomb core in a cutting preparation process, and then cut by a cutter in a cutting process, and then the hard foamed plastic remaining in a removing process is removed. The material is removed.

Therefore, first, even though the honeycomb core is a flexible material, even if the honeycomb core has a low density, the portion to be cut is filled with a hard foamed plastic material, so that the rigidity of the cell wall forming the cell is reduced. The strength is remarkably improved, and the honeycomb core firmly holds a flat shape. When the blade of the cutter hits in the cutting process, the cell wall of the portion to be cut is cut smoothly. In other words, the cell wall is not pressed inadvertently, does not escape and bend as if it were carried by the blade, and does not fall, crush, burrs, or other defective deformations.

Second, since the blade of the cutter does not inadvertently press the cell wall in the cutting process, the load on the cutter and the drive motor is small, and the temperature rise is low.

Thirdly, according to the first and second aspects, when controlling the operation of cutting using a computer or the like, it is not necessary to change the program to reduce the number of revolutions on the way when the load on the cutter and the drive motor increases. . Also, switching to manual manual operation according to the situation becomes unnecessary.

Fourth, the filling of each cell with the hard foamed plastic material in the cutting preparation step and the removal thereof in the removal step are extremely easy.

This fourth point will be described in more detail. First, in the cutting preparation step, a continuous integral block-shaped hard foamed plastic material is pressed against a cell wall of a honeycomb core made of a thin foil-shaped metal base, so that the hard foamed plastic material is pressed into each of the honeycomb cores. It is finely cut into the shape of a cell and pressed into each cell.

As described above, in the cutting preparation step, the filling of the hard foamed plastic material into each cell is performed very easily without any trouble, and thus the cost is excellent.

In the removing step, the hard foamed plastic material that has been filled in each cell in the cutting preparation step and that has not been removed even after cutting in the cutting step is removed as follows. .

That is, as described above, since the rigid foamed plastic material is cut into small pieces in an integrated block and filled in each cell by press-fitting, it can be easily removed from the honeycomb core by, for example, blowing air or applying impact. The cleaning operation is not particularly required.

Thus, in the post-removal step, the removal of the rigid foamed plastic material does not involve difficulty and troublesomeness.
It is very easy to perform without any hassle, and is thus excellent in cost.

"Example" Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 1 and FIG. 2 are provided for explaining an embodiment of the present invention. FIG. 1 is a plan view of a honeycomb core and the like for explaining the cutting preparation process. FIG. 2 is an enlarged side view of a honeycomb core and the like for explaining a cutting process.

First, a method of cutting the honeycomb core will be described in the order of a cutting preparation step, a cutting step, and a removing step.

 The cutting preparation process is as follows.

As shown in FIG. 1, in the cutting preparation step, a rigid foamed plastic material A is filled in each cell 1 of a portion 3 to be cut into a honeycomb core 2 which is a planar assembly of hollow columnar cells 1. .

To describe these in detail, first, the honeycomb core 2
The cell walls 4 are formed using a thin foil-like metal base material such as aluminum, and a large number of hollow columnar cells are formed by dividing the cell walls 4 into independent spaces and forming, for example, regular hexagons and other various shapes as shown in the drawing. It consists of one planar assembly.
The honeycomb core 2 is a flexible material which is excellent in weight ratio strength, has rigidity and strength as well as lightness and is flexible, and also has excellent fluid rectification effect and flatness accuracy, is easy to mold, and is cost-effective. Excellent and other properties are widely known. And it is widely used for various structural materials, rectifying materials and other uses.

The hard foamed plastic material A is made of polyurethane foam, for example, and is excellent in lightness, workability, reinforcement, etc.
Each cell 1 of the cutting target portion 3 of the honeycomb core 2 is filled by press fitting or the like. This filling is performed by adding a continuous integral block-shaped hard foamed plastic material A to the honeycomb core 2.
This is performed by pressing each cell wall 4 from the cell end face side, finely cutting into the shape of each cell 1 by each cell wall 4, and then press-fitting each cell 1 in an independent state. The filling range of the hard foamed plastic material A may be set for each cell 1 in a slightly wider range than each cell 1 of the cutting target portion 3 of the honeycomb core 2. The filling thickness of the hard foamed plastic material A may be the same as the height of the cell 1, that is, the thickness of the honeycomb core 2, or may be slightly thicker or slightly thinner. When the thickness is increased, the rigid foamed plastic material A protrudes from the inside of the cell 1. Conversely, when the thickness is decreased, the rigid foamed plastic material A sinks into the cell 1 to form a slight recess.

 The cutting preparation process is as described above.

 Next, the cutting process will be described.

For example, as shown in FIG. 2, in the cutting step, the cutting target portion 3 of the honeycomb core 2 is cut by the cutter 5 together with the filled hard foamed plastic material A in a predetermined manner.

These will be described in detail. The cutter 5 performs cutting by rotating a rotary shaft 6 and a blade 7 by driving of a drive motor (not shown). Recently, a computer or the like is used to realize high-precision cutting. In many cases, such operation control is performed. With such a cutter 5, for example, the hard foamed plastic filled in the cell wall 4 of the portion 3 to be cut of the honeycomb core 2 mounted on a work table (not shown) in the above-described cutting preparation step. Along with material A,
It is cut as specified. Unnecessary portions that are removed by cutting are discarded. In the example shown in FIG. 2, cutting is currently performed on the inclined surface 8, and then cutting is performed on the step surface 9.

 The cutting process is as described above.

 Next, the removing step will be described.

In the removing step, the hard foamed plastic material A that has been filled and remains after cutting is removed from the honeycomb core 2 after the fact.

More specifically, the hard foamed plastic material A filled in each cell 1 in the cutting preparation step and remaining without being removed even after the cutting in the cutting step.
Is removed from each cell 1 after cutting, that is, from the honeycomb core 2. Note that, as described above, the hard foamed plastic material A is not formed into a continuous integral block shape, but is cut into small pieces and filled by press-fitting or the like in an independent state for each cell 1, so that, for example, air blowing or The honeycomb core 2 can be easily removed from the honeycomb core 2 by applying an impact or the like.

 The removal process is as described above.

The method for cutting the honeycomb core includes the above-described cutting preparation step, cutting step, and removing step.

 Therefore, it becomes as follows.

That is, in this cutting method, the hard foamed plastic material A is first filled in each cell 1 of the cutting target portion 3 of the honeycomb core 2 in the cutting preparation step, and then the cutting is performed by the cutter 5 in the cutting step. Then, the hard foamed plastic material A remaining in the removing step is removed. Therefore, the following first, second, third,
It becomes the fourth.

First, the honeycomb core 2 is a flexible material having flexibility, and even if the honeycomb core 2 has a low density, the cutting target portion 3 is filled with the hard foamed plastic material A so that the cells 1 The rigidity and strength of the cell wall 4 forming the honeycomb core 2 are remarkably improved, and the honeycomb core 2 firmly holds a flat shape. Thus, when the blade 7 of the cutter 5 hits the cutting target portion 3 in the cutting process, the cell wall 4 in that portion is not carelessly pressed without being cut. That is, the cell wall 4 of the portion 3 to be cut is smoothly cut as intended, and unlike the conventional general example, the cell wall 4 is not carried away by the blade 7 so that the cell wall 4 is cut off at the cut surface. No collapse, burrs, burrs or other defective deformations of No. 4 occur.

Secondly, since the blade 7 of the cutter 5 does not inadvertently press the cell wall 4 in the cutting process, the load on the cutter 5 and its driving motor is small, and the temperature rise is low. That is, as in the conventional general example, no increase in the load and no remarkable temperature rise is observed, and no burning occurs.

Third, since cutting is performed smoothly in this way and the load on the cutter 5 and the drive motor is small, when controlling the operation of cutting using a computer or the like,
It looks like this: That is, there is no need to change the program for reducing the number of revolutions on the way, which is conventionally performed when the load on the cutter 5 and the drive motor increases. Also, switching to manual manual operation according to the situation becomes unnecessary.

Fourth, the filling of the hard foamed plastic material A into each cell 1 in the cutting preparation step and the removal thereof in the removal step are extremely easy. In particular, the removal of the hard foamed plastic material A is extremely easy by blowing air, applying an impact, etc., in comparison with the difficulty and labor of cleaning and removing work after cutting in the method using polyethylene glycol, which has been conventionally attempted. It is.

This fourth point will be described in more detail. First, in the cutting preparation step, the rigid foamed plastic material A is pressed against the cell wall 4 of the honeycomb core 2 made of a thin foil-shaped metal base by pressing the continuous integral block-shaped rigid foamed plastic material A. The core 2 is finely cut into the shape of each cell 1, pressed into each cell 1, and easily filled.

In the subsequent removal step, the hard foamed plastic material A that has been filled in each cell 1 in the cutting preparation step and remained without being removed even after the cutting in the cutting step is as follows. Is removed.

That is, as described above, since the rigid foamed plastic material A is finely cut into an integral block and is filled into each cell 1 by press-fitting, the honeycomb core is formed by, for example, blowing air or applying impact. 2 is easily removed.

"Effect of the Invention" As described above, the cutting method of the honeycomb core according to the present invention is performed by filling each cell of the portion to be cut in advance with the hard foamed plastic material and then performing the cutting, thereby It is effective.

In particular, one-piece block-shaped hard foam plastic material,
The following effects are exhibited by pressing the thin foil-shaped cell wall to finely cut into the shape of each cell, press-fitting and filling each cell, and then performing cutting.

First, the surface precision of the cut surface is excellent. That is, the cell wall of the cut surface of the honeycomb core does not fall, crush, burrs, and other defective deformations do not occur, the cut surface is sharply finished, workability is improved, and smooth, high-precision cutting is realized. Therefore, for example, it is also excellent in adhesiveness to other members after the fact.

Second, the durability of the cutter and the drive motor is also excellent. That is, the load on the cutter and the drive motor is small, the temperature rise is low, and seizure is prevented.

Third, man-hours are also reduced. That is, in the operation control of the cutting process using a computer or the like, it is not necessary to change the program for reducing the rotation speed of the cutter and the drive motor on the way. In addition, there is no need to switch to manual manual operation, and no man-hours are required.

Fourth, cost is also excellent. That is, the filling and the subsequent removal of the rigid foamed plastic material are extremely easy and do not take much time.

As described above, the effects exhibited by the present invention are remarkable and large, for example, the problems existing in this type of conventional example are eliminated.

[Brief description of the drawings]

FIG. 1 and FIG. 2 are provided for describing an embodiment of a honeycomb core cutting method according to the present invention. FIG. 1 is a plan view of a honeycomb core and the like for explaining the cutting preparation step. FIG. 2 is an enlarged side view of a honeycomb core and the like for explaining a cutting process. DESCRIPTION OF SYMBOLS 1 ... Cell 2 ... Honeycomb core 3 ... Part to be cut 4 ... Cell wall 5 ... Cutter 6 ... Rotating shaft 7 ... Blade 8 ... Slope surface 9 ... Step surface A ... Hard foam plastic Lumber

Claims (1)

(57) [Claims] 1. A hard foamed plastic material is filled in each cell of a portion to be cut into a honeycomb core, which is a planar aggregate of a large number of hollow columnar cells partitioned into independent spaces by cell walls. A cutting preparation step for cutting; a cutting step for cutting a portion to be cut of the honeycomb core together with the filled hard foamed plastic material by a cutter as predetermined; A removing step of removing a plastic material from the honeycomb core afterwards, wherein the honeycomb core has a cell wall made of a thin foil-shaped metal base material such as aluminum. Is formed of a flexible material having flexibility, and the rigid foamed plastic material has light weight,
In the above-mentioned cutting preparation step, the hard foamed plastic material is a continuous, integral block-shaped material, which is pressed against each of the cell walls from the cell end face side with respect to the honeycomb core, The thin foil-shaped cell walls of the honeycomb core are finely cut into the shapes of the cells, and the finely cut pieces are individually filled into the cells by press-fitting, thereby improving flexibility. The honeycomb core made of a pliable flexible material has the rigidity / strength of each cell wall improved by filling each of the cells with the hard foamed plastic material, so that the flat shape is firmly held. And a process for cutting the honeycomb core.