JPH02143809A - Apparatus for drilling work for aerated light weight concrete - Google Patents

Abstract

PURPOSE:To perform a drilling work with excellent work accuracy and good hole finishment, and enable discharge on chips to be carried out at the same time of a drilling work by providing a needle having a tip for hitting ALC, a driving part for vibrating the needle in an axial direction, blades provided on the top part of a cylindrical member arranged around the needle, and a sucking and discharging device for chips. CONSTITUTION:The hitting surface 8 of a needle 2 vibrated by a needle driving part 3 is put on the drilling part of an ALC panel 7. The hitting surface 8 of the needle 2 may act to destroy the surface of the ALC panel 7 through hitting in an axial direction in order to form a hole thereon. Following this, the blades 5 of a cylindrical member 4 is put on the periphery of same hole. Since the cylindrical member 4 also vibrates passively in an axial direction through the vibration of the needle 2, it may cut the periphery of the same hole by the blades of the top end, and form a smooth circular hole therein. And, at the same time of formation of the hole, chips 16 are sucked and discharged from the top end of the cylindrical member 4 by a sucking and discharging device 6 via a through hole. The needle 2 can be constituted of a needle 2a equipped with an approximately flat hitting surface 8 and a needle 2b equipped with a sharp hitting point 19 as a tip end part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a drilling device for lightweight cellular concrete (hereinafter referred to as ALC).

[Prior Art] Conventionally, in order to drill a hole in an ALC panel, a so-called twist drill tool, which has a cutting edge formed at the tip and an outer periphery carved with a twist pattern, was rotated and fed by a motor.

[Problem to be solved by the invention] However, when a nut for attaching the ALC panel to a structural frame is embedded in the ALC panel, it is necessary to drill a hole to the embedded position of the nut and expose the end face of the nut. There is. In this case, the above twist drill tool for drilling holes in ALC panels has a problem in that when the blade hits an embedded nut or reinforcing bar, the cutting edge, nut, etc. are damaged. In addition, when a deep hole is required, the chips from the ALC clog the groove of the twist drill tool, reducing the drilling ability, so the twist drill tool must be removed from time to time to remove the chips before resuming machining. This resulted in poor processing efficiency.

Therefore, the present inventor developed a multi-needle system that vibrates multiple needles in the axial direction and hits and destroys the workpiece with the tip of the needle. We focused on air chisel technology (for example, Nitto Kohki's high-speed multi-needle air chisel) and came up with the idea of applying this to drilling holes in ALC panels. There was a problem in that the dimensional accuracy of the machined hole deteriorated because the hole opened. Furthermore, since the edges of the holes drilled in the ALC panel were uneven due to the impact of the needle, a separate process was required to smooth the edges. Furthermore, a separate process was required to remove the ALC chips.

The purpose of the invention is directly to provide an ALC panel drilling device that can achieve good processing accuracy and finish of the machined holes in the processing of ALC panels, and can also discharge the ladle at the same time as the drilling process. It is about providing.

However, the technical concept of the present invention can be widely applied not only to the drilling of ALC panels, but also to the drilling of various ALC products in general.

[Means for Solving the Problems] In order to achieve the above object, the ALC drilling device according to claim 1 also includes a plurality of needles each having a tip for striking the ALC, and a plurality of needles each having a tip for striking the ALC. A drive unit for vibrating in the axial direction, a cylindrical member provided around the needle, a blade portion provided at the tip of the cylindrical member, and suction and discharge of chips communicated with the cylindrical member. The configuration includes a device.

In addition, the ALC drilling device of Claim 2 is Claim 1.
In the ALC drilling device, some of the plurality of needles were configured to have sharp tips.

[Function] According to the ALC drilling device of claim 1, the ALC is struck from the axial direction by a plurality of needles, and the edge of the hole formed by the striking is smoothly ground and accommodated by the tip blade of the cylindrical member. It also has the effect of sucking and discharging the generated chips. Further, the cylindrical member has the effect of preventing the tip of the needle from opening.

In addition to the above, the ALC drilling device of the second aspect has the function of piercing the ALC with a needle with a sharp tip to form a small hole, and crushing the ALC with a needle with a blunt tip.

[First Embodiment] Hereinafter, a first embodiment embodying the present invention will be described with reference to FIGS. 1 and 2.

The drilling device 1 used in this embodiment includes a plurality of needles 2 and a needle drive unit 3 that drives the needles 2.
, a cylindrical member 4 provided around the needle 2, a blade portion 5 formed at the tip of the cylindrical member, and a suction/discharge device 6 communicated with the cylindrical member 4. .

Each needle 2 is formed of a linear rigid material of approximately equal length, and is constructed by combining a plurality of these into a bundle, and the tip of each needle is used as a tip for damaging the ALC panel 7 by impact. A substantially flat striking surface 8 is formed. On the other hand, the other end of the needle 2 is connected to a needle drive unit 3 provided in a grippable needle drive unit case 9, and the needle drive unit 3 allows each needle 2 to vibrate with a constant width in the axial direction. It is designed to be driven.

The needle drive unit 3 includes a known crank, a piston (not shown), and the like.

The cylindrical member 4 is screwed onto an attachment 10 inserted into the front end of the needle drive unit case 9, and the cylindrical member 4 surrounds the outer periphery of the needle 2 so as to slightly touch the striking surface 8 of the needle 2. It is formed into a substantially cylindrical shape with a protrusion. A blade portion 5 is formed on the periphery of the distal end of the cylindrical member 4, and the blade portion 5 is sharpened into a knife shape. A plurality of through holes 14 are provided in the outer peripheral wall of the cylindrical member 4 .

The suction and discharge device 6 includes a mounting member 11 attached to the cylindrical member 4, a discharge pipe 12, and a suction and discharge pump (not shown). The mounting member 11 is fitted onto the outer periphery of the cylindrical member 4 so as to cover the through hole 14, and is configured to form a space 15 that communicates with the inside of the cylindrical member 4. The space 15 is kept airtight except for the inside of the cylindrical member 4 by the seal ring 13 between the cylindrical member 4 and the mounting member 11, and the space 15 is kept airtight by the discharge pipe 12 fitted into the 1-inch member 11. It is connected to the suction and discharge pump.

In order to make a hole in the ALC panel 7 using the drilling device 1 configured as described above, first, the striking surface 8 of the needle 2 vibrated by the needle drive unit 3 is applied to a location on the ALC panel 7 where the hole is to be made.

The striking surface 8 of the needle 2 destroys the ALC pie luer surface by striking in the axial direction to form a hole. In this case, ALC
The holes on the 7th side of the panel have uneven edges.

Subsequently, the blade portion 5 of the cylindrical member 4 provided around the needle 2 comes into contact with the edge of the same size. This cylindrical member 4 also has a needle 2
Since it passively vibrates in the axial direction due to the vibration, the blade portion 5 at the tip scrapes off the edge of the same size to form a smooth circular hole.

ALC chips 16 are generated in the process of forming these holes.

In parallel with the formation of the hole, the chips 16 are inserted into the cylindrical member 4.
is suctioned and discharged from the tip of the tube through the through hole 14 by the suction and discharge device 6 .

According to the drilling device of this embodiment configured as described above, the ALC panel surface is destroyed by a blow in the axial direction, and not by a cutting operation with a rotating cutting edge like a drill tool. Even if the nuts 17 and reinforcing bars 18 are embedded inside the panel 7, the cutting edge may be damaged or the nuts etc.
The end face of the nut 17, etc. can be exposed without damaging the nut 7.18.

Further, the cylindrical member 4 prevents the bundle of needles 2 from opening outward due to the impact of the blow, so that the dimensional precision of the holes formed can be improved.

Furthermore, following rough drilling with the needle 2, the edge of the hole can be finished with the blade portion 5 of the cylindrical member 4.

Since the chips 16 generated by forming the hole are constantly discharged by the suction/discharge device 6, a separate process for removing the chips 16 is not required, and drilling can be performed simply and efficiently. Further, since it is possible to prevent the worker from inhaling the cut pieces 16, the environmental hygiene of the workplace can be improved.

[Second Embodiment] A second embodiment embodying the present invention will be described with reference to FIGS. 3 and 4.

The needle 2 has a needle 2a with a substantially flat striking surface 8 as a tip and a sharp striking point 19 as a tip.
(1;+1) and the needle 2b.

In Fig. 3, the three central needles are pointed needles 2b,
Among the surrounding needles 2, one out of every three needles 2b is sharp.

The rest of the structure is the same as that of the first embodiment.

ALC panel 7 using the drilling device 1 of this embodiment
When making a hole in the ALC panel 7, first, a small circular hole is formed in the surface of the ALC panel 7 using the sharp impact point 19 of the needle 2b, thereby weakening the surface.

At the same time, the flat striking surface 8 of the needle 2a shreds the ALC panel starting from the small hole.

Here, only the flat needle 2a of the striking surface 8 used in the first embodiment is sufficiently effective in crushing the surface of the ALC panel 7, but in the configuration of the second embodiment, the piercing force and the crushing force are Since a synergistic effect is produced by this, hole drilling can be performed efficiently. In addition, if the needle 2b with a sharp striking surface 8 is used, the efficiency will be poor because only a narrow range will be pierced.

Other functions and effects are the same as in the first embodiment.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and may be modified and embodied as desired without departing from the spirit of the invention, for example, as described below.

(1) The cross-sectional shape of the needle 2 may be a polygon such as a quadrangle.

(2) The striking surface 8 of the needle 2 may be formed in a hemispherical shape.

(3) The cylindrical member 4 may have a polygonal cylindrical shape.

(4) The needle drive section 3 may be based on an electric system.

(5) In this embodiment, a shallow hole is formed to expose the end face of the nut 17 embedded in the ALC panel 7, but the protrusion of the needle 2 and the cylindrical member 4 is made longer to make the hole deeper. It may also be configured to form a hole.

[Effects of the Invention] Since the ALC drilling device according to claim 1 is configured as described above, it exhibits the following excellent effects.

Since only the tip of the needle remains open, it is possible to drill holes with high dimensional accuracy, and it is also possible to perform drilling and trimming the edges of the hole at the same time.

In addition, since the chips are discharged in parallel with the generation of chips during processing, it is possible to improve processing efficiency without requiring a separate process to remove the chips, and to improve the environmental hygiene of the workplace. .

In particular, even when holes are made in an ALC panel in which nuts or the like are embedded to expose the nuts or the like, no damage is caused to the blades, nuts, or the like.

According to the ALC drilling device of the second aspect, in addition to the above effects, the drilling efficiency can be further improved.

[Brief explanation of the drawing]

1 and 2 show a first embodiment embodying the present invention, FIG. 1 is a sectional view from all sides showing the ALC processing device of the present invention in use, and FIG. 2 is a front view of the device. , 3 and 4 show a second embodiment of the same device, FIG. 3 is a front view of the same device, and FIG. 4 is a partially sectional view of the same device. 1...Drilling device, 2...Needle, 3...
・Needle drive part, 4... Cylindrical member, 5... Blade part, 6... Suction and discharge device, 7... Lightweight cellular concrete panel as lightweight cellular concrete, 8... As tip part Impact surface, 19... impact point as the tip.

Claims (1)

[Claims] 1. A plurality of needles (2) each having a tip (8) for striking lightweight aerated concrete (7), and a drive for vibrating the needles (2) in the axial direction. (3); and a cylindrical member (4) provided around the needle (2).
, a blade section (5) provided at the tip of the cylindrical member (4), and a swarf suction and discharge device (
6) A lightweight aerated concrete drilling device (1) comprising: 2. In the lightweight aerated concrete drilling device (1) of claim 1, some of the plurality of needles (2) have sharp tip portions (1).
9) A lightweight aerated concrete drilling device (1) characterized by comprising: