JPH06320313A - Drilling device - Google Patents

Abstract

PURPOSE:To provide a drilling device with no drilling preparation work or the like required by simplifying handling. CONSTITUTION:A drill main unit 4 is arranged to be mounted capable of coming into contact and separating relating to a base 2 to a pole 3 of a drill stand 1, to provide a recessed part 9 opened downward to a lower part of the base, drill insertion hole 10 for loosely inserting a drill 7, mounted to the drill main unit, in an upper wall of the recessed part 9 and a cutting chip discharging duct hole 11 connected to a dust collector.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device used for punching a hard material such as concrete or stone.

[0002]

2. Description of the Related Art A drill (blade) for drilling a hard material such as concrete or stone (hereinafter referred to as a body to be drilled) has a shank at the upper end and has a sharp tip on the peripheral surface of the lower end of a core body. There is a Dunyamond core drill to which multi-edged Danyamond particles are fixed.

When piercing the surface of the body to be pierced by this type of core drill, many chips are produced by cutting.
Such chips have hitherto been applied by applying the dust suction opening of the dust collecting hose of the dust collector to the vicinity of the hole opening in the hole to prevent the chips coming out from the hole from being sucked and scattered. .

[0004]

As described above, when dust is sucked by applying the dust suction opening of the dust suction hose to the vicinity of the hole opening, the dust suction hose has a large opening to the outside. However, the dust will be sucked together with a large amount of air, and the dust collection efficiency will be extremely poor. Also,
When drilling a small diameter, the chips are not discharged from the holes, which hinders the drilling.However, as described above, the dust suction hose is applied to the vicinity of the mouth of the hole to suck the chips. However, the chips cannot be properly discharged from the hole. Further, every time the drilling location changes, a preparatory work before drilling is required to fix the dust suction opening of the dust suction hose near the drilling location so as not to interfere with the drilling, which complicates the work.

The present invention has been made in view of the above points, and an object of the present invention is to provide a punching device which is easy to handle, does not require a drilling preparation work, and has a high drilling efficiency.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the gist of the present invention is that a pole is erected on a base to form a drill stand, and the pole of the drill stand is attached to the base. The drill body is installed so that it can be moved in and out freely, and a concave portion that is opened downward is provided at the bottom of the base.
A drilling hole is provided in the upper wall of the recess, through which a drill attached to a drill body is loosely inserted, and a chip discharge duct hole connected to a dust collector.

[0007]

The drill stand is placed on the surface of the body to be drilled, and the drilled portion is covered by the recess of the base. The drill is lowered together with the drill body, and the drill is loosely threaded through the drill through hole for drilling. Air is sucked into the recess through the gap between the drill through hole and the drill by the dust collector to create a strong air flow that flows toward the chip discharge duct hole, and the chip is also positively sucked out from inside the hole during drilling. Do not leave chips in the holes that would interfere with the drilling.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view in which a part of the present invention is cut away,
FIG. 2 is a plan view of the base portion.

In the figure, reference numeral 1 is a drill stand, in which a pole 3 is erected on a base 2. Reference numeral 4 denotes a drill body mounted on the pole 3, which has a built-in motor (not shown), a drive shaft 5 projecting toward the base 2, a drill 7 is attached via a chuck 6, and a handle 8 is operated. The drill 7 is configured to be movable in and out of contact with the base 2, and a diamond core drill or the like is used as the drill 7.

Reference numeral 9 denotes a concave portion which is provided in the lower portion of the base 2 and which is opened downward. A drill through hole 10 through which the drill 7 attached to the drill body 4 is loosely inserted, and a dust collector (not shown) on the upper wall of the concave portion. No. 1) is provided with a chip discharge duct hole 11 connected via a hose 12.

In the above structure, when the drill stand 1 is placed on the surface A to be drilled, the base 2 is placed on the surface A to be drilled.
A space covered by the recess 9 is formed.

The drilling portion and the drill 7 are aligned in this space. Then, when the handle 8 is operated and the drill 7 is lowered together with the drill body 4, the drill 7 passes through the drill through hole 10 loosely, and the surface A to be drilled is drilled. The chips cut here are sucked out from the inside of the recess 9 by the dust collector. For sucking out the chips, the air sucked into the recess 9 through the gap between the drill through hole 10 and the drill 7 is used for discharging the chips. Since a strong airflow flowing toward the duct hole 11 is produced, the chips are positively sucked out from the inside of the hole regardless of the hole diameter.

[0014]

According to the present invention having the above-mentioned structure, the following effects can be obtained.

(1) The vicinity of the perforated portion on the surface of the body to be perforated is covered by the concave portion of the base, and the chips generated during the perforation are sucked out by the strong airflow flowing in the concave portion, so that the chips are scattered to the outside. Moreover, during the drilling, the chips are positively sucked out from the inside of the holes and the chips that hinder the drilling are not left in the holes to enhance the drilling efficiency.

(2) Since the drill stand is placed on the surface of the body to be drilled for drilling, the stability of the drill body is high, and even when drilling a small diameter hole, breakage of the drill due to fluctuation of the drill body, etc. Can be reduced.

(3) Since the drill stand is placed on the surface of the body to be drilled and the drilling work is immediately performed only by aligning the position of the drill with the surface of the body to be drilled. Eliminates the need for complicated pre-drilling work such as fixing near the location
Easy to handle.

[Brief description of drawings]

FIG. 1 is a side view in which a part of a punching device of the present invention is cut away.

FIG. 2 is a plan view of a base portion.

[Explanation of symbols]

 1 ... Drill stand 2 ... Base 3 ... Pole 7 ... Drill 9 ... Recess 10 ... Drill through hole 11 ... Chip discharge duct hole

Claims (1)

[Claims] 1. A pole is erected on a base to form a drill stand, and a drill main body is mounted on the pole of the drill stand so as to be movable toward and away from the base, and is opened downward at the lower part of the base. A drill through hole through which a drill attached to the drill body is loosely provided, provided with a recess, and an upper wall of the recess,
A perforating device, characterized in that a duct hole for discharging chips connected to a dust collector is provided.