JPS59201799A - Drilling 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 an apparatus capable of neatly drilling a through hole of an appropriate diameter in a composite plate made by laminating materials together without destroying the flexible member.

For example, a composite plate with a diameter of s
In order to drill a through hole of mmφ, either of the following methods are used: (1) using a drill from the metal plate surface, (2) punching the metal plate with a press. However, the above-mentioned method (1) has the disadvantage that it is not possible to perforate the synthetic resin foam neatly. In addition, method (2) had drawbacks such as deformation of the synthetic resin foam over a wide area other than the perforated portion, and the fragile synthetic resin foam was destroyed.

In order to eliminate these drawbacks, the present invention has a blade having a two-step cutting structure depending on the object to be drilled, which eliminates deformation and destruction of the object to be drilled, and allows for a beautiful finish on the end and inner wall. The purpose of the present invention is to propose a compact and inexpensive drilling device for composite materials that can accurately drill holes of a predetermined diameter.

An embodiment of the apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an embodiment of the above-mentioned apparatus, and 1 is a punch, for example, as shown in FIG. It works together with a die to be described later to form a through hole of a predetermined diameter in a hard member, and also functions as a drive mechanism for the cutting blade. That is, the punch 1 has a mounting part 2 for fixing it to a ram etc., a guide groove 3 for driving the cutting blade, and a hard member perforating blade (hereinafter simply referred to as the upper blade) 4 at the upper end of the columnar body, in the middle. The diameter dO may be determined separately depending on the purpose.

Further, the guide groove 3 connects the punch 1 and the cutting blade Z, and is used to linearly reciprocate the cutting blade Z. Furthermore, a locking portion or an implanted locking piece 6 is disposed at, for example, the boundary between the upper end and the middle portion. The cutting blade (E) is used to cleanly perforate the flexible member (B) and the sheet-like material (C) without affecting the outside of the predetermined range at all. To explain specifically, the cutting blade 2 has an upper, upper end cylindrical body 8.
9 and its hollow part 10, 11 and the flexible part 12 (
(hereinafter simply referred to as the perforating blade), the storage groove 13 and the connecting pin 14
, a bearing 15, and a stopper receiver 16 provided between the cylindrical bodies 8 and 9.

Furthermore, to explain, the upper end cylinder 8 houses the middle part and lower end of the punch ↓, and houses and guides a hollow part 10 that is reciprocatably mounted and the lower end of an elastic body to be described later on the upper end surface. A storage groove 13 and a connecting pin 14 installed near the upper end and connecting the cutting blade 1 and the punch 1 are provided. Further, the upper end cylinder 9 is formed with a hollow portion 1 for reciprocatingly housing the upper blade 4, and a perforating blade 2 formed on the tip end surface.

Furthermore, the bearing 15 is fitted into the hollow portion 10 and is provided to allow the punch 1 to move smoothly. The stopper receiver 16 is for limiting the moving distance (stroke) of the cutting blade 1, and as shown in the figure, the stopper receiver 16 is used to limit the movement distance (stroke) of the cutting blade.
An end face formed by a zero dimensional difference may also be used.

The structure of the cutting edge 12a of the punching blade 12 is shown in FIG.
It is formed as shown in (d).

The cross section of the end of the through hole E thus drilled is shown in Fig. 3 (a), and in the case of the drilling blade shown in (0), Fig. 4 (al
In the case of the punching blade shown in FIGS. 3(bJ and d), the cross section is as shown in FIG. 4(b).

Reference numeral 17 is an elastic body, such as a spring body, which is interposed between the connecting portion of the punch top and the cutting blade 1, and provides a buffering effect, a smooth movement effect, an elasticity spacing maintenance effect, and a return effect between these two parts. It is. Furthermore, when the punching blade 12 contacts the flexible part B and the sheet material C1 or the flexible member B and makes a hole, the elastic body 17 instantaneously imparts elasticity to the cutting blade 1 to make the end of the wood beautiful. It is also useful for cutting. 18
is a slideable stopper that limits the stroke of the cutting blade E, and is a through hole or notch (
(not shown) 19 are bored. Of course, stopper 18
is fixed on the punch separately from the cutting blade. A die 20 functions as a lower blade on the punch, and a receiver on which the composite material is placed functions as a stand. Note that the die 20 is provided with a tapered through hole 2 through which the upper blade 4 passes, and expels chips from the hollow portion 11 to the outside.

Next, the operation of the above device will be explained.

First, the composite phase has the structure shown in Fig. 2, and the hard member A is a colored steel plate of 0.27 m, and the synthetic resin foam B is
A polyurethane foam (with a density of 30 and an open cell structure) was used as the material, and a 190g77z kraft paper was used as the sheet-like material C, which is a composite material in which both members were bonded together when forming the polyurethane foam. In addition, as shown in FIG. 5, the through hole E is dl = 10 mmφ, t (If)
Assume that m is drilled one by one as shown. In addition,
In Fig. 1, S] is the stroke of the upper blade 4, S2 is the stroke of the cutting blade 2, and S3 is the drilling blade from the tip of the upper blade 4]2
S4 is the distance between the composite material sheet C and the punching blade tip 12a, and the stopper 8 is fixed to the press body (not shown). Furthermore, die 20
A composite material was placed on top as shown, and the ram (not shown) of the press machine was set to a stroke of 85 mm. Then, the punch L at the starting point shown in Figure 6 descends linearly in the direction of arrow A, and following this, the cutting blade E descends and strikes the sheet material C as shown in Figure 7. Then, the sheet material C is perforated and the polyurethane foam B is also perforated, and the stopper receiver 16 hits the stopper 8 and stops. In other words, the cutting blade E stops at the position shown by the two-dot chain line, and the through hole E is bored in the sheet material C and the polyurethane foam B. Furthermore, even if the cutting blade 1 stops descending, the punch 1 continues descending, moves by a distance S5, and punches the collar steel plate A, as shown in Fig. 8.
It further descends and discharges the chips into the tapered through hole 21. Note that the movement limit of the punch J- is defined by the movement distance of the ram itself. Next, as the ram moves upward in the direction of the arrow, the cutting edge of the punch after drilling also rises via the elastic body 17 and the pin 4, and returns to its original position. Therefore, in order to drill a plurality of through holes E, it is sufficient to perform the above-described operations in sequence. In addition, FIG. 9 is an explanatory diagram showing the locus of the movement of the punch and the cutting blade (e), where the solid line corresponds to the bonchie, and the soil kneading corresponds to the cutting blade (e). In addition, the point ■ is the point at which the sheet-like material C is cut, the range of ■ is the cutting time of the polyurethane foam B, and the range of ■ is the cutting of the cut sheet-like material C and the polyurethane foam B when the upper blade cuts the cut sheet-like material C and the polyurethane foam B. 4 is the compression time, and 2 is the time when the upper blade 4 punches out the color steel plate A.

What has been described above is only one embodiment of the perforation device for composite materials according to the present invention, and for example, as shown in FIGS. 11, and a corresponding through hole E can be formed.Alternatively, as shown in FIG.
It is also possible to attach a large number of through holes E to a large number and drill a large number of through holes E at one time. Furthermore, as shown in FIG.
．． 9 can also be formed by a cylindrical body 8 having the same diameter. In the figure, +6a has the same function as the stopper receiver 16, and the pin 23 functions as a locking pin for the elastic body 17. Figures 13(a) and 13(b) show other embodiments of the upper blade 4 and the perforating blade 12, (Figure 81 shows one in which a portion of the lower end of the upper blade is replaced and hung. , (bj) The lower end cylindrical body 9 is made into the same hollow part as the hollow part 10, so that a large diameter through hole can be drilled with the same device.

As described above, according to the perforation device for composite materials according to the present invention, two types of composite phases are formed by combining materials with completely different properties, such as a hard member, a core material of foam tissue, and a soft flexible member. The upper blade and the cutting blade are responsible for cutting and drilling, respectively, and it is possible to obtain beautiful cut edges and side walls. That is, in order to cut and perforate the flexible member, which is relatively soft and easy to tear or crush, and the core member, which has a foam-like structure, with the serrated thin-walled cutting edge formed on the end surface of the cylinder, both of the above-mentioned members can be cut and punched. It can be cut and punched into a cross-sectional shape of a predetermined size without causing damage to the vicinity of the cut end due to tension when shearing it, or crushing the core material when shearing it.

In addition, the cut and punched waste is stored in the punching blade and is finally discharged to the outside while being completely isolated from the cutting core, so the side wall of the hole is beautiful and a hole of a predetermined size can be formed. Furthermore, hard parts warp due to the normal punch-die relationship.
It is possible to reliably shear without deformation or abrasion, and it is also possible to make a beautiful, crisp-free cut. Furthermore, the device has the advantage of being small, inexpensive, and simple in structure, and can be attached to existing devices.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing one embodiment of a drilling device according to the present invention, Fig. 2 is a perspective view showing an example of a composite material, and Fig. 3 (al.
~(dl, and FIG. 4(al, (bl) is an explanatory drawing showing an example of a piercing blade for a flexible member, etc., and a longitudinal cross-sectional view showing the cross-sectional shape of the through hole E drilled by it, and FIG. 5 is a Figures 6 to 8 are explanatory diagrams showing the operation of the punch and cutting blade, Figure 9 is an explanatory diagram showing the locus of the cutting blade on the punch, and Figure 10 is an explanatory diagram showing the trajectory of the cutting blade on the punch. +3) ~ (fl is a perspective view showing other embodiments of the cutting blade 2, FIG. 11 is a perspective view showing a device equipped with a plurality of devices according to the present invention, FIG. 12, and FIG. 13 (al, (BL is an explanatory diagram showing other embodiments. Lo, punch, L6. cutting blade, No. !
! L Figure 51211 District 6 Figure 7 (0) (b) (0) ('l'
) (e/)
f1000) No./l Figure

Claims (1)

[Claims] (1) A column-shaped punch having a hard member drilling blade formed at the lower end and a guide groove provided at the middle part, and a hollow part housing the lower end and the middle part of the punch in a slidable state, and the lower end A cutting blade having a perforating blade such as a flexible member formed at the tip of the partial body, a connecting pin for causing the cutting blade to follow the movement of the punch via the guide groove, and a connecting pin interposed between the punch and the cutting blade to control the movement. A punching device for a composite material, comprising: an elastic body for controlling, a stopper for restricting movement of a cutting blade, and a die of the punch provided below the stopper.