JPH06155124A - Attachement for electric drill - Google Patents

Abstract

PURPOSE:To provide a portable electric drill unit by which drilling a slanting hole to a board thickness face of a plate material is prevented and positioning of a hole machining position is carried out easily while easy portableness is accomplished. CONSTITUTION:An attachment for an electric drill consists of a clamp part 3 arranged in the front part 2 of a connecting frame 1 and a drill mounting part 5 arranged in the rear part, and the connecting frame 1 is provided with an inserting port 6 so that a drill edge part is inserted forward and backward freely, while the clamp part 3 consists of clamp plates 11, 11, which are situated in the front part, 2 of the connecting frame 1 and one of them or both of them are elevated freely via a guide post, and a fastening screw 12 elevating the clamp plates. The drill mounting part 5 consists of traveling guides 13, 13 extended to the rear side of the connecting frame 1, a mounting plate 14 arranged freely travelably in the traveling guides, and a drawing spring 15 connecting the mounting plate 14 and the rear parts of the traveling guides 13 together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attachment for an electric drill which is mainly used for drilling a plate material in the plate thickness direction in machining and woodworking processes.

[0002]

2. Description of the Related Art When drilling holes in the plate surface of conventional plate materials, it is necessary to apply a scale to the standard line in the length and thickness directions of the material. In general, the size of a hole to be drilled is measured, a center punch is punched there, and an operator drills a hole with an electric drill.

In particular, it is necessary to tap the plate thickness surface of a plate plate that serves as a base for an automatic machine and screw various components there to form a unit. The tapping in the plate thickness direction plays a very important role.

When performing the tapping, it is necessary to perform the predrilling in advance, and the performance required there directly affects the precision of the finished tapping, the assembling accuracy, the yield and the machining cost. The requirements for precision are becoming stricter in proportion to the precision of precision machinery. For example, the prepared hole diameter of M3 tap is 2.5 mm and the depth is 12 m.
If the pitch accuracy on the surface is 0.5 mm, it is 0.5 mm.
If it is tilted and a hole is formed, it will be a defective product.

At present, there is a method of processing using a horizontal milling machine, but when the outer dimension of the plate material becomes large, the mounting base is limited and it becomes impossible to set.

For this reason, a hand-type electric drill is used for processing, but in this case, it is extremely difficult to make a hole at a right angle to the plate thickness surface because the drill is held in the hand and processed.

Therefore, there has been a method of making a guide jig for the drill or a method of visually confirming the drill from the upper direction and the lateral direction by two people, but still a defective product is generated.

The dimensioning of the hole machining position is generally performed by inserting a marking line by using a scale in the plate length direction and the plate thickness direction and then punching the center punch, which takes a lot of man-hours. It was work.

[0009]

The present invention was developed in order to solve these drawbacks, and it is possible to easily make the dimension of the hole processing position without forming a hole inclined to the plate thickness surface. Another object of the present invention is to provide a portable electric drill unit that can be easily carried.

[0010]

The present invention will be described in detail with reference to the embodiment of FIG. 1, in which the center position between the clamp plates 11 and the drill cutting edge 7'are made to coincide with each other. It is composed of a clamp part 3 provided in the part 2 and a drill mounting part 5 provided in the rear part 4. The connection part 1 is provided with an insertion port 6 so that the chuck part 8 of the electric drill 7 can be inserted back and forth, and the clamp part 3 Is a vertically movable clamp plate 11 and 11 via guide posts 10 and 10 attached to the upper and lower flange portions 9 and 9 of the front portion 2 of the connecting frame 1 and a fastening screw for vertically adjusting the clamp plate 11 and 11. 12 and the clamp plates 1 of each other
Numerals 1 and 11 can be brought close to each other by rotating the knob 12 'of the fastening screw 12, and the drill mounting portion 5 is connected to the connecting frame 1
Running guides 13, 1 fixed to the rear part 4 and extended rearward
3 and a mounting plate 14 provided on the traveling guides 13 and 13 so as to be freely movable, and a rear portion 1 of the mounting plate 14 and the traveling guides 13 and 13.
It is composed of a pulling spring 15 connecting 3 ', and the drill cutting edge 7'can be freely arranged at the central position between the clamp plates 11, 11.

The fastening screw 12 is provided with a reverse screw on the upper and lower sides, and when the knob 12 'is rotated in one direction, the clamp plates 11, 11 come close to or apart from each other and sandwich the plate member 28. It is fastened freely.

Reference numeral 16 in the drawing denotes a pull-out scale attached to the side portion of the upper clamp plate 11, and the scale 17 of the pull-out scale is passed through the inside of the clamp plate 11 so that the clamp plate 11 The clamp plate 11 can be hooked on the opposite side, and a viewing window 18 is provided at the center of the clamp plate 11 and a reference mark 19 is provided at a corresponding position of the drill cutting edge 7 '.

Reference numeral 20 denotes a drill blade tip 7'fixed to the connecting frame 1.
In the scale in the depth direction, 21 and 22 are mounting plates 14, that is, stoppers for restricting the forward and backward movements of the electric drill 7 to be mounted, and 23 is a mounting hole for fixing the electric drill 7 to the mounting plate 14. .

In the embodiment shown in FIG. 2, the clamp plates 11 and 1 are used.
It is designed such that the drill cutting edge 7 ′ can correspond to any position between the two, and the lower flange 9 is used as the clamp plate 11, and only the upper clamp plate 11 is fixed to the lower side by the fastening screw 12. The plate 11 can be freely approached, and the traveling guides 13 of the drill mounting portion 5 are fixed to an upper and lower plate 25 that is vertically movable on a rear guide post 24 provided on the rear part 4 of the connecting frame 1, and the upper and lower plates 25 The vertical movement is adjustable by the adjusting screw 26 and the knob 26 '.

Reference numeral 27 in FIG. 2 is a scale for the plate thickness direction.

[0016]

The present invention is embodied as described above,
In order to use the one shown in FIG. 1, first, the electric drill 7 is fixed in the hole 24 of the mounting plate 14 via a bolt, a collar or the like, and the central portion between the clamp plates 11 and 11 and the drill cutting edge 7'are aligned.

Clamp plates 11, 11 are inserted into the side portions of the plate material 28 to be drilled next to a predetermined depth, and the pull-out scale 17, the peep hole 17, and the reference mark 19 are used for positioning, and then the knobs 12 are tightened. The clamp screw 11 is rotated to clamp and clamp the clamp plates 11, 11 to the plate material 28.

After that, the electric drill 7 is turned on, the power is turned on, and the plate material 28 is pressed against the extension spring 15 so that the drill cutting edge 7'perforates the plate material 28.
When it reaches a predetermined depth, it stops at the stopper-21.

By inserting an auxiliary plate (not shown) inside one of the clamp plates 11, 11, the plate material 2
8 can be drilled at any deviated position in the plate thickness direction.

To use the one shown in FIG. 2, the plate material 2 is used.
8 is the same as that shown in FIG. 1 until it is sandwiched, but the adjustment of the plate material 28 to an eccentric position is carried out by the knob 26 'and the adjusting screw 26.
The upper and lower plates 25 are moved up and down in accordance with the scale 27 by the rotation of, and the drill blade tip 7'is positioned and drilled at the drilling point.

[0021]

As described above, the present invention is composed of the clamp portion 3 provided on the front portion 2 of the connecting frame 1 and the drill mounting portion 5 provided on the rear portion thereof. The clamp portion 3 is made to be insertable in the front and rear direction, and the clamp portion 3 is provided on the front portion 2 of the connecting frame 1 and one or both of which are vertically movable via guide posts, and clamps 11 for vertically moving the clamp plates. The drill mounting portion 5 is composed of a screw 12, and the drill mounting portion 5 connects the traveling guides 13 and 13 extending to the rear of the connection frame 1, the mounting plate 14 movably provided on the traveling guide, and the mounting plate and the rear portion of the traveling guide. Since it is composed of the pulling spring 15, the clamp portion is clamped at a predetermined position on the plate thickness side of the plate material 28 and fastened, and an electric drill is operated to easily and accurately perform drilling. It is possible to work in a narrow place where humans cannot enter, It is convenient because anywhere can walk equity.

In the invention of claim 2, the clamp plate 1
Since the central position between 1 and 11 and the cutting edge 7'of the electric drill 7 are always aligned, it is convenient to punch in the central position of the plate thickness of the plate material and an auxiliary plate of a predetermined thickness is clamped separately. By interposing it inside the plate 11, it is possible to perforate at any position in the plate thickness direction.

In the invention of claim 3, the drill mounting portion 5
Since the height can be adjusted to any height,
This is convenient for perforating any part of the torch material 28 in the plate thickness direction.

[Brief description of drawings]

FIG. 1 is an explanatory plan view of an attachment for an electric drill of the present invention.

FIG. 2 is a partial cross-sectional side view diagram of the same.

FIG. 3 is an explanatory plan view of an attachment for an electric drill according to another embodiment.

FIG. 4 is a side sectional view of the same partial section.

[Explanation of symbols]

 1 Connection Frame 3 Clamping Part 5 Drill Mounting Part 6 Insertion Port 7 Electric Drill 7'Drill Blade Edge 8 Chuck Part 10 Guide Post 11 Clamp Plate 12 Tightening Screw 13 Travel Guide 14 Mounting Plate 15 Pull Spring 24 Rear Guide Post 25 Upper and Lower Plates 26 Adjusting screw 28 Plate material

Claims (3)

[Claims] 1. A clamp portion 3 provided on a front portion 2 of a connecting frame 1.
And a drill mounting portion 5 provided at the rear part, and an insertion port 6 is provided in the connection frame 1 to allow the drill chuck part to be inserted back and forth, and a clamp part 3 is provided at the front part 2 of the connection frame 1 and Clamp plate 1 both of which can move up and down via guide posts
1, 11 and a fastening screw 12 for moving the clamp plate up and down, and the drill mounting portion 5 has travel guides 13 and 13 extending to the rear of the connecting frame 1 and a mounting plate movably mounted on the travel guide. An attachment for an electric drill, which is composed of 14 and a tension spring 15 which connects the mounting plate and the rear portion of the traveling guide. 2. The mutual clamp plates 11 of the clamp part 3,
11 and the traveling guides 13 and 13 of the drill mounting portion 5 are connected to each other by the connecting frame 1
Fixed to the rear part 4 and the drill blade tip 7 ′ is clamp plate 11,
The attachment for an electric drill according to claim 1, wherein the attachment can be arranged at a central position between the parts 11. 3. The clamp part 3 integrally or fixes the lower clamp plate 11 to the connecting frame 1, and makes the upper clamp plate 11 accessible to the lower clamp plate by a tightening screw 12, and a drill. The running guides 13, 13 of the mounting portion 5 are fixed to the upper and lower plates 25 provided on the rear guide posts 24, 24 provided at the rear of the connecting frame 1 so as to be vertically movable, and the upper and lower plates 25 are vertically moved by an adjusting screw 26. The attachment for an electric drill according to claim 1, which is dynamically adjustable.