JPS59192498A - Boring device for composite material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to composite materials, particularly hard members (metal plates, synthetic resin plates, etc.)-foams (synthetic resin foams, inorganic foams), or hard members-foams-flexible members ( The present invention relates to a device for drilling a through hole of an appropriate diameter in a composite material which is laminated and integrated in the order of sheets (sheet-like materials, etc.), beautifully and without damaging the foam material, etc.

Generally, when drilling a through hole in a composite material in which different materials are laminated, a drill or a press (with a punch as an upper blade and a die as a lower blade) is usually used. However, if the foreign member is made of a hard material/elastic material or a slightly brittle foam/flexible material, etc., and the elastic material is bulky, even if the above-mentioned tools and devices are used to make the hole, the flexible material will not be able to cushion the foam. Due to the nature of the material, the shearing force does not act sufficiently and it only compresses, and then the hard material is punched out as if it were to be peeled off, so the size of the through hole may be uneven or it may not be possible to drill the desired through hole. There were drawbacks such as. Furthermore, the wall surface of the through hole is rough, and the cutting tool is not sharp enough, resulting in the formation of burrs on the outer periphery of the hard phase of the hole. Of course, there was a drawback that the product could not be produced without deburring before use, and the number of man-hours was increased.

In order to eliminate such drawbacks, the present invention has a cutting tool configured to cut in two stages, so that the cutting tool can freely reciprocate on the same axis, and the cutting tool in the first stage can be moved freely on the same axis, and the cutting tool in the first stage can be used to easily cut foams and flexible materials. In addition, the structure is simplified and miniaturized, and the through hole is made into a beautiful cut (cut end) and wall surface of the through hole, and the through hole of a specified diameter is ensured. This paper proposes a device that can be installed in

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a perforating device for composite materials according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view showing a typical example of the above-mentioned device, and 1 is a worker holder mounting part (hereinafter simply referred to as the mounting part).
The tool holder A is connected to a mechanism (not shown) that reciprocates linearly by a set distance (stroke), such as a ram, etc.
It can be easily attached and detached. The tool holder (simply referred to as a boulder) has a mounting shaft 3 at one end and a support portion 4 at the lower end, and the mounting shaft 3 is fitted and fixed into the mounting portion 1. Further, the support portion 4 has a mounting hole 5 in the center thereof, and a threaded hole 6 is bored in the outer wall of the mounting hole 5 into which a threaded hole 6 for fixing the upper end of the punching blade described below is screwed. moreover,
A ring-shaped mounting groove 7 is provided in the lower end surface of the support portion 4 around the mounting hole 5 . The blade is a punching blade made of a columnar body (stepped columnar body in the figure), and has an upper end 8 that fits into the mounting hole 5.
an intermediate portion 8 that functions in conjunction with the axis of the elastic body, which will be described later as a;
b, and a lower end portion 8C having an upper blade 9 on the lower end surface for punching a hard member B of a composite material A as shown in FIGS. To explain further, a guide groove 10 as shown in FIGS.
is engraved. This is for rotating the rotary blade, which will be described later, by seven to several rotations by descending the punching blade in a straight line in order to easily bite into the workpiece surface. Therefore, the guide groove 10 is formed of a columnar axis, a vertical groove part 10a provided in the W row, and a bright line groove part 10b connected to the lower end of the vertical groove part 10a. Further, a step, a so-called small diameter portion, is formed from the intermediate lower end to the upper end of the lower end portion 8C. Furthermore, this small diameter portion is formed to have the same diameter up to the lower end surface of the lower end portion 8G, the so-called upper blade 9. This is the upper blade 9 that is drilled into the hard member B.
The purpose of this invention is to easily form a rotary blade, reduce the contact friction with the inner wall of the rotary blade, provide a stroke relief for the punching blade, and facilitate assembly.

The mouth is a rotary blade, and a large diameter hollow part lea and a small diameter hollow part 11b are formed in a stepped shape, and a middle part 8h and a lower end part 8c for the punching blade are reciprocatably built in. A perforating blade 12 is provided at the top. Moreover, the hollow part 11a
A fitting hole +1.1 for mounting the bearing 13 is formed in the end face of the upper end portion 11c, and the outer periphery of the hole +1.1 connects the punching blade and the rotary blade opening, and also connects the punching blade and the rotary blade opening. A mounting hole 11e is formed in which a pin 14 for obtaining a driving force for rotating the rotary blade is mounted. Further, the hollow portion 11t) is formed as a cylinder of a predetermined diameter for drilling a through hole E in the flexible member of the foam C1 to the composite plate, and the cylinder end surface of the lower end surface thereof is formed, for example, as shown in FIG. (a)-(e
) A punching blade 12 as shown in K is formed. In other words, (al and (b)) show the lower end surface of the cylinder formed into a cutting edge 12a, and (O) to (eJ) show the lower end surface of the cylinder formed into a serrated cutting edge 12b. The shape of the cut surface by the cutting edge is the wood end as shown in Figures 5 (ta, ), fb), and the shape of Figure fb1 is similar to that shown in Figures 4 (al, (bl, (d),
tel, and the fb1 diagram corresponds to the fOJ in Figure 4. Reference numeral 15 denotes an elastic body, such as a coil spring, which is interposed so as to be in contact with the middle 7 for the punching blade.

This elastic body 15 is mainly used to cut the composite material A smoothly with the rotary blade, and also buffers the driving force of punching and gives elasticity. This is for the purpose of reinstatement. A stopper 16 defines the lower limit in the vertical direction of the rotary blade U, and is fixed to a pedestal or the like of the punching device itself (not shown). Of course,
The height can be changed in the vertical direction depending on the thickness of the composite plate A.

17 is a die, which has a lower blade 18 having a so-called punching edge property;
This is for mounting on a composite board. In addition, the lower blade 18
is the butt end of the through hole having the same diameter as the upper blade 9, and the inner circumferential wall below it is formed in a tapered shape, so that chips of the composite material A can be easily removed.

Next, the operation of the apparatus and the drilling method will be briefly explained.

For example, assume that a composite material (soffit) as shown in FIG. 2 is to be manufactured. Part, so-called composite material A
The structure is as follows: hard member B is a 027 dragon color steel plate, flexible member is a sheet made of kraft paper laminated with aluminum foil, and foam material (core material) C is polyurethane foam, which is integrated using an on-site foaming method. It is formed into a closed cell structure with a thickness of 16 mm and a density of 30 kg/7d.

Further, the through-holes E are circular and have a diameter of .about.1 mm. In addition, SL is the stroke of the upper blade 9, S2 is the stroke of the rotating blade mouth, and H'' is the stroke of the upper blade 9.
Distance from the end face of the blade tip to the tip of the rotating blade, H2
is the distance from the sheet-like material of the composite material A to the tip of the perforating blade 12, and the stopper 16 is attached to a press machine (not shown) so that the interval can be adjusted. Therefore, the first
As shown in the figure, it is assumed that the composite material A is placed horizontally on the lower blade 18 with the sheet-like material facing upward. At this time, ram 1
is set so that the upper blade 9 is located at a position H3 from the lower blade (die) 18, and the drilling operation is started by descending linearly from this position in the direction of arrow A. Ram 1
The upper blade 9 descends linearly in accordance with the descent of the ram 1, and the tool holder lowers in accordance with the descending speed of the ram 1 until the perforating blade 12 of the rotary blade comes into contact with the sheet material. , the upper blade 9, the rotary blade J], and the elastic body 15 are lowered in a connected state to the position shown in FIG. When the perforating blade 12 comes into contact with the sheet material, the cutting edge of the cylindrical end face lowers the ram 1 and the force relationship between the coil spring 15 and the sheet material, so-called a rotary blade, causes the perforating blade 12 to move linearly. forced to descend.

When the perforating blade 12 descends, a part of the foam C is cut with a cross-sectional area of the inner diameter do of the rotary blade mouth, and when it is filled into the hollow part 1+b of the rotary blade mouth and comes into contact with it, the foam C has a thickness t. Sections are cut and drilled. That is, the punching of the sheet-like material D and the polyurethane foam C was completed in a stroke of 52=H29-t. In addition, drilling blade 1
There is a △ between the tip of 2 and the color steel plate 8 to protect the cutting edge.
It is set to have a gap of 11. After the rotary blade has penetrated the sheet-like material and the foam C, the upper blade 9 cuts the above-mentioned chips in the small hollow part with the lower end surface of the upper end of the rotary blade in contact with the stopper 16. While compressing the material, the punching material is gradually lowered. When the punching blade further descends, the upper blade 9 and the lower blade 18 work together to punch out the color steel plate B, and the upper blade 9 moves △12 as shown in FIG.
The die 17 descends to a position where chips are discharged from the die 17.

Thereafter, as the ram 1 rises, the upper blade 9 and rotary cutting edge move up in conjunction with each other, and are smoothly returned to their original positions as shown in FIG. 1 by the action of the coil spring 15. In addition, when drilling a plurality of through holes E in the composite material A, it is sufficient to perform the above operation for each number of through holes E. FIG. 9 is a diagram for explaining the operation of the above device.
10- is a characteristic diagram showing the relative relationship between distance (horizontal axis) and vertical distance (vertical axis). In the figure, the solid line corresponds to the upper blade 9, and the soil line indicates the locus corresponding to the rotary blade opening. In addition,
In Fig. 9, the range W] is the time required for perforating the sheet-like material by rotation with the perforating blade 12, the point ■ is the cutting point of the collar steel plate B by the upper blade 9, and the perforating blade ]2 is the polyurethane foam. W3 is the time for cutting and perforating C, W3 is the time for the upper blade 9 of the punching tool to compress the chips of the sheet D and polyurethane foam C in the small hollow part, r is the time for discharging all the chips, W4 is W5 indicates the return (rise) time of the punching date, W5 indicates the return (rise) time of the rotary blade U, and W6 indicates the time during which the rotary blade mouth is in contact with the guide 16 and is fixed.

What has been described above is only one embodiment of the composite material drilling device according to the present invention, and the tool holder may have a chuck structure or a multi-axis support structure capable of simultaneously mounting a large number of combinations of punching blades and rotary blades. It is also possible to do this. Furthermore, depending on the diameter of the punching blade and the rotary blade U, especially the diameter of the upper blade 9, it is also possible to set the punching blade and the rotary blade U to have the same outer diameter.

As described above, according to the perforation device for composite materials according to the present invention, two types of composite materials made by combining materials with completely different properties, such as a hard member, a core material of foam tissue, and a soft flexible member, can be used. The rotary blade and punching blade are each responsible for cutting,
It is possible to drill holes and obtain beautiful cut edges and side walls. That is, in order to cut and perforate by rotating a sawtooth-like thin-walled cutting edge that has a flexible member that is relatively flexible and easily torn or crushed and a foam-like core formed on the end surface of the cylinder, the above-mentioned When both parts are sheared, they are not pulled and the area near the cut ends are torn, and when the core material is processed, it is not crushed, and the core material is cut into a cross-sectional shape of a predetermined size.
It has the feature of being punchable. In addition, the cut and punched waste is stored in the rotary blade and is finally discharged outside while being completely isolated from the so-called core material, so the side walls of the hole are beautiful and the hole of a predetermined size can be formed. Furthermore, since the hard member is punched using a normal body die, it can be reliably sheared without warping, deformation, or scratches, and it is also possible to make beautiful, crisp-free cuts. Furthermore, the device is small, inexpensive, and has a simple structure, making it convenient for it to be attached to existing devices.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of a drilling device for composite materials according to the present invention, FIG. 2 (al, (bl is a perspective view showing an example of a composite material), and FIG. 1 of the device according to the invention
An explanatory diagram showing an example of the punching blade, which is the main part of the
A cross-sectional view taken along line F, and FIGS. 4(a-1-e) are explanatory diagrams showing an example of the cutting edge (perforating blade) of a rotary blade, which is another essential part of the device according to the present invention, and FIG. al, (b) is an explanatory diagram showing the cross section of the composite phase after drilling, FIGS. 6 to 8 are explanatory diagrams showing the operating state of the device according to the present invention, and FIG. 9 is an explanatory diagram showing the operation of the device according to the present invention. -13- 110. Tool holder attachment part, 0. Punching knife, 901. Upper blade, mouth 119 rotary blade, 1260. Punching blade, 151., Elastic body. z Figure (0,) (b) Number 3 Figure (α) (b) Figure 4 (K) ζ1)) (G) (Fu) (eJ) Figure S ((1) (b) Number B "? 1 Fishing Y Figure F Figure

Claims (1)

[Claims] (1) A columnar body has an upper blade at its lower edge, a holder is fixed at its upper end, and a vertical groove and a bright line groove are formed in succession at the center of the outer periphery of the middle part. 1. Punching with a guide groove A blade, a lower end portion and an intermediate portion of the punching blade are built in so as to be able to reciprocate, and a pin for connecting the lower end portion, which has a perforating blade with a serrated tip or the like, and the punching blade is implanted. , a rotary blade having an upper end portion with a bearing fixed to the upper end surface; an elastic body having a punching blade interposed as a shaft between the holder and the bearing; and the rotating H.
A composite material comprising: a height-adjustable stopper for regulating the stroke in the direct downward direction; and a die having a lower blade that places the composite material below the stopper and cooperates with the upper blade. Drilling device for wood.