JPH075928Y2 - Auxiliary tool for vertical hole drilling in rotary drill tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vertical hole drilling auxiliary tool for a rotary drill tool capable of drilling an accurate vertical hole in a workpiece.

[Problems to be solved by conventional techniques and devices]

Conventionally, electric drills that are commercially available generally hold the main body in a vertical state with respect to the work piece by hand and perform the drilling work. There was a problem that it was very difficult to do.

The present invention has solved the above problems, and it is a technical object to provide an auxiliary tool for vertical hole drilling in a rotary drill tool capable of accurately drilling a vertical hole in a workpiece. This is an issue.

[Means for Solving the Problems] The gist of the present invention will be described with reference to the accompanying drawings.

A fastening portion 4 attached to the rotary drill tool 1 is provided, a mounting frame 12 is fixed to the fastening portion 4, and a drill blade 2 is detachably mounted on the mounting frame 12 at the tip of the rotary drill tool 1. The support rod 3 is provided in parallel with the axis of the support rod 3, the mounting frame 12 is provided slidably with respect to the support rod 3, the spring 23 is fitted on the support rod 3, and the fastening portion 4 is attached to the support rod 3. Is provided so that when it is slid in the direction, the fastening portion 4 is returned by the restoring force of the spring 23, and an abutting plate 5 orthogonal to the supporting rod 3 is attached to the tip of the supporting rod 3 and the corresponding abutting plate. 5 is provided with a window hole 6 through which the tip of the drill blade 2 is inserted, and a stopper rod 8 is provided to prevent the drill blade 2 from entering the workpiece 7 when the drill blade 2 enters the workpiece 7. Provided in parallel with the tip of the drill blade 2 and the stopper rod 8
A measuring rod 9 for measuring the difference from the tip of the tool is provided slidably in parallel with the stopper rod 8 and the drill blade 2, and relates to an auxiliary tool for vertical hole drilling in a rotary drill tool. is there.

[Action]

The product is fastened and fixed to the rotary drill tool 1 by using the fastening portion 4.

The support rod 3 is slid with respect to the mounting frame 12 according to the length of the drill blade 2, and the distance between the tip of the drill blade 2 and the contact plate 5 is set.

Next, the measuring rod 9 is slid to set the stopper rod 8 at a desired position while measuring the distance between the tip of the stopper rod 8 and the tip of the drill blade 2 by the measuring rod 9. The distance between the tip of the stopper rod 8 and the tip of the drill blade 2 is the maximum distance for the drill blade 2 to enter the workpiece 7.

In this state, the contact plate 5 orthogonal to the support rod 3 is attached to the workpiece 7
, The rotary drill tool 1 is operated, the grip portion of the rotary drill tool 1 is gripped, the rotary drill tool 1 is pressed against the spring 23, and the drill blade 2 is moved to the workpiece 7 As the contact plate 5 in contact with the workpiece 7 is at a right angle to the support rod 3 and the drill blade 2 is maintained in a state parallel to the support rod 3, The drill blade 2 enters the workpiece 7 in an orthogonal state, and therefore the workpiece 7
The holes that are drilled in are exactly vertical holes.

When the drill blade 2 enters the workpiece 7 by the set predetermined distance, the tip of the stopper rod 8 abuts the workpiece 7, so that the drill blade 2 does not enter the workpiece 7 any more.

When the pressing of the rotary drill tool 1 is stopped, the restoring force of the rib 23 acts and the rotary drill tool 1, that is, the drill blade 2 returns to the original position.

〔Example〕

The drawings illustrate one embodiment of the present invention, which will be described below.

On the side surface (the surface on the left side in FIG. 1) of the mounting frame 12 having the rising pieces 11 and 11 'having the insertion square holes 10 at both ends, the chuck mounting portion 24 of the rotary drill tool 1 is tightened and fastened. An annular fastening portion 4 whose one end is open is provided.

A butterfly screw 13 is screwed to the open portion of the fastening portion 4 when the fastening portion 4 is fitted into the chuck mounting portion 24 of the rotary drill tool 1.

The chuck mounting portion 24 has various sizes depending on the rotary drill tool 1. To ensure that the embodiment is securely attached to the chuck mounting portion 24 of any diameter, the chuck mounting portion 24
It is desirable to prepare, for example, a rubber ring or the like to be fitted into the.

Two through holes 14a and 14b are formed in parallel in the upper part of the annular fastening portion 4, and a stopper rod 8 is slidably inserted into one through hole 14a and the other through hole is formed. A measuring rod 9 with a scale is inserted into 14b so as to be rotatable and slidable.

In the figure, reference numeral 15 is a restricting butterfly screw for restricting the sliding of the stopper rod 8, and reference numeral 16 is a guide piece.

In addition, the tip of the measuring rod 9 is also used as a retaining piece which is locked to the guide piece 16 and which is locked to the tip of the drill blade 2 when the measuring rod 9 is slid to the contact plate 5 side. Plate 19 is the measuring rod 9
It is attached in a state orthogonal to.

In addition, the measuring rod 9 has a spring 20 which also serves as a retainer for the measuring rod 9.
The spring 20 is supported by the locking ring 17 fixed to the base end of the measuring rod 9 and one side surface (the upper surface in FIG. 1) of the annular fixing portion 4. .

The angular support rod 3 is a rising piece 11, 11 'of the mounting frame 12.
Are provided so as to penetrate through the respective insertion square holes 10, and a regulation ring 21 is fitted on the angular support rod 3.
An adjusting butterfly screw 22 is screwed on the. The restriction ring 21 is located inside the rising piece 11 of the mounting frame 12.

Further, the bearing rod 3 is fitted with a spring 23.
23 is supported by the inner surface of the rising piece 11 and the inner surface of the restriction ring 21.

The abutting plate 5 shown in the drawing is disk-shaped, and has a window hole 6 in the center and four window holes 6 ′ around the window hole 6 so that the workpiece 7 can be seen.

In the figure, reference numeral 18 is a cradle on which the embodiment is mounted, reference numeral 25 is a stand-up mounting portion, and reference numeral 26 is a chuck receiving recess.

Since the embodiment has the above-mentioned structure, first, the wing screw 13 is tightened and the fitting portion 4 is fitted and fixed to the chuck mounting portion 24 of the rotary drill tool 1, and then the adjusting wing screw 22 is attached. Loosen and slide the support rod 3 according to the length of the drill blade 2 and tighten the adjusting butterfly screw 22 to fix the contact plate 5 in place. The distance between the tip of the drill blade 2 and the abutment plate 5 may be set to a distance that does not hinder the measurement plate 19 described later from being locked to the tip of the drill blade 2. Subsequently, the measuring rod 9 is slid against the bar 20 to lock the measuring plate 19 on the tip of the drill blade 2, and in this state, the restricting butterfly screw 15 is loosened to slide the stopper rod 8 for measurement. While reading the scale of the rod 9, set the tip of the stopper rod 8 to the desired length position from the measuring plate 19, tighten the regulating butterfly screw 15, and lock the measuring plate 19 with the drill blade 2 to rotate the measuring plate 19. Move and release. The measuring rod 9 moves back by the restoring force of the spring 20.

The length between the tip of the stopper rod 8 and the tip of the drill blade 2 becomes the maximum penetration length with which the drill blade 2 enters the workpiece 7.

In this state, the contact plate 5 is brought into contact with the workpiece 7, the grip portion of the rotary drill tool 1 is gripped, and the rotary drill tool 1 is pressed in the direction in which the drill blade 2 approaches the workpiece 7. Then, the rotary drill tool 1, that is, the drill blade 2 slides while being guided by the support rod 3 against the spring 23, and the drill blade 2 moves through the window hole 6 of the contact plate 5.
A vertical hole is formed in the workpiece 7 through the hole.

The entry of the drill blade 2 into the workpiece 7 is stopped when the stopper rod 8 contacts the workpiece 7 (or the contact plate 5).

From the above, when this embodiment is used, it is possible to very easily form a hole having a desired depth and perpendicular to the workpiece 7.

[Effect of device]

Since the present invention is constructed as described above, it is possible to very easily form a vertical hole having an accurate desired depth by using the rotary drill tool provided with the present invention.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a perspective view of the present invention, and FIGS. 2 and 3 are explanatory views showing the usage state of the present invention.
FIG. 4 is a plan view of the present invention, and FIG. 5 is a side view when the present invention is mounted on a cradle. 1 ... Rotating drill tool, 2 ... Drill blade, 3 ... Support rod, 4 ... Fastening part, 5 ... Contact plate, 6 ... Window hole, 7 ...
Work piece, 8 …… Stopper rod, 9 …… Measuring rod, 12 ……
Mounting frame, 23 ... start.

Claims (1)

[Scope of utility model registration request] 1. A fastening portion attached to a rotary drill tool,
A mounting frame is fixed to this fastening part, and a mounting rod is provided parallel to the axis of the drill blade that is detachably attached to the tip of the rotary drill tool, and the mounting frame slides on the mounting rod. The support rod is provided so that it can be returned by the restoring force of the spring when the retaining rod is fitted to the supporting rod and the retaining portion is slid in one direction with respect to the supporting rod. A contact plate orthogonal to the support rod is attached to the tip of the, and a window hole through which the tip of the drill blade is inserted is provided in the corresponding contact plate, and when the drill blade enters the workpiece, A stopper rod that prevents entry is provided parallel to the support rod, and a measuring rod that measures the difference between the tip of the drill blade and the tip of the stopper rod is provided slidably in parallel with the stopper rod and the drill blade. An auxiliary tool for drilling a vertical hole in a rotary drill tool.