JP3187855U - Tap - Google Patents

Abstract

Provided is a tap that can be used by being attached to a portable electric tool that can be rotated forward and backward, such as an impact driver, without using an adapter, and that can also be attached to a manual tool such as a tap wrench.
A tap A for performing threaded hole machining on a workpiece, and a hexagonal column-shaped first mounting shaft that can be mounted on a hexagonal mounting hole 6 of a portable electric tool D at a tip end of a shank spaced from a threaded portion B 1 and a rectangular columnar second mounting shaft 2 that can be mounted in a square mounting hole of a manual tool at the end farther from the threaded portion B than the hexagonal columnar first mounting shaft 1 are provided coaxially.
[Selection] Figure 4

Description

  The present invention relates to a tap that performs threaded hole machining on a workpiece.

As a tap which is a male thread type tool for forming a female thread in a prepared hole of a workpiece, a square columnar mounting shaft (refer to Patent Document 1) is attached to the tip of a shank such as a hand tap (see Patent Document 1), a point tap and a spiral tap. In some cases, a square columnar portion 5 is formed, and the square columnar mounting shaft is inserted into a square mounting hole of a manual tool such as a tap wrench (see tap turning 15 of Patent Document 1) and a T-shaped tap holder, for example. Used in state.
Moreover, there exists what formed the hexagonal column-shaped attachment axis | shaft (refer the attachment part 214 of patent document 2) in the shank tip of the said tap (refer the tap 210 of patent document 2), and the said hexagonal column-shaped attachment shaft is an impact driver (patent), for example. It is used in a state of being fitted into a hexagonal mounting hole of a portable electric tool capable of forward and reverse rotation, such as the impact driver 101 in Document 2.

  Further, in order to use the tap having a square columnar mounting shaft formed at the tip of the shank with the portable electric tool, the tap insertion of a circular longitudinal section for inserting the handle portion of the tap (T) into the cylindrical main body (1). A tap detent hole (5) in which the hole (2) and the terminal square column part (M) of the tap (T) are fitted is formed, and the tap insertion hole (2) is formed in the thick part of the cylindrical body (1). ) Is inserted in the diameter direction, the positioning ball (6) is immersed in the ball insertion hole (7), and the ball deterrent surface (13) and the ball escape surface are inserted into the inner peripheral surface (10). A cylindrical slide cover (8) in which a cavity (11) is recessed is loosely fitted on the outer peripheral surface (9) of the cylindrical body (1), and in the positioning groove (12) which is recessed in the inner peripheral surface (10). Next, the ring spring (14) fitted in the outer peripheral surface (9) is expanded and fitted to position the slide cover (8). There is a configuration was electric tap chuck (see Patent Document 3).

Registered Utility Model No. 3084779 JP 2012-157925 A Registered Utility Model No. 3074205

In the conventional tap as described above, a tap having a hexagonal columnar mounting shaft formed at the tip of the shank is used by being attached to a portable electric tool capable of rotating in the forward and reverse directions such as an impact driver, and performs screw hole processing in a short time. be able to.
However, it cannot be used when the number of screw holes formed in the workpiece is small and it is desired to manually operate it using a manual tool such as a tap wrench.

On the other hand, a tap having a square columnar attachment shaft formed at the tip of the shank can be used by being attached to a manual tool such as a tap wrench or a tapper.
However, it cannot be used by being attached to a portable electric tool such as an impact driver, and an adapter such as the electric tap chuck of Patent Document 3 is required to use the portable electric tool for improving productivity. .

  Therefore, in view of the above situation, the present invention intends to solve the problem by using a portable electric tool such as an impact driver that can be rotated in the forward and reverse directions without using an adapter, and a manual tool such as a tap wrench. The point is to provide a tap that can be attached and used.

The inventor of the present invention pays attention to the above-mentioned problem, and intensively studied the shape of the tap that can be used for both the portable electric tool and the manual tool, and formed a hexagonal columnar mounting shaft formed at the tip of the shank separated from the screw portion. It was conceived that a rectangular columnar mounting shaft having a smaller outer cross-sectional shape than the hexagonal outer shape of the hexagonal columnar mounting shaft is coaxially formed at the end farther from the screw portion.
And since the outer shape of the cross section of the rectangular columnar mounting shaft is smaller than the hexagonal shape of the cross section of the hexagonal columnar mounting shaft, the hexagonal columnar mounting shaft is attached to the hexagonal mounting of the portable electric tool (for example, impact driver). The hexagonal mounting hole has a depth that can be mounted without interfering with the square columnar mounting shaft when fitted into the hole, and does not interfere even if the axial length of the rectangular columnar mounting shaft is a standard standard dimension. As a result, the present invention was completed.

  That is, the tap according to the present invention is a tap for performing a screw hole processing on a workpiece to solve the above-mentioned problem, and is attached to a hexagonal mounting hole of a portable electric tool at a tip of a shank separated from a screw portion. A hexagonal column-shaped first mounting shaft that can be mounted, and a rectangular columnar second mounting shaft that can be mounted in a square mounting hole of a manual tool at the end farther from the threaded portion than the first mounting shaft are provided coaxially. Features.

According to such a configuration, the hexagonal columnar first mounting shaft at the tip of the shank is used when attaching to the portable power tool, and the square columnar second mounting shaft at the tip of the shank is used when attaching to the manual tool. Because it can be used by attaching to a portable power tool such as an impact driver that can be rotated in the forward and reverse directions without using an adapter, it can also be used by attaching it to a manual tool such as a tap wrench. For portable power tools and manual tools There is no need to have separate taps.
In addition, the depth of the groove for discharging chips is reduced to match the use of the portable electric tool as compared with a tap that is a standard product having a square columnar mounting shaft formed at the tip of the shank. Since it has a core thickness, durability when used in a state of being fitted into a square mounting hole of a manual tool such as a tap wrench or a T-shaped tap holder is improved.

Here, it is preferable that the hexagonal columnar first mounting shaft is formed with a circumferential groove that engages with a ball of the one-touch mounting mechanism of the portable electric tool at an intermediate portion in the axial direction.
According to such a configuration, in addition to the above-described effects, it can be used by being attached to the portable electric tool with a single touch, so that convenience during use is improved.

  As described above, according to the tap according to the present invention, it can be used by attaching it to a portable electric tool that can rotate forward and backward, such as an impact driver, without using an adapter, and it can also be attached to a manual tool such as a tap wrench. Since it can be used, there are significant effects such as no need to provide separate taps for the portable power tool and the manual tool.

It is a perspective view of a tap concerning an embodiment of the invention. It is also a front view. It is a left side view similarly (the figure seen from the end surface side of the square columnar 2nd attachment shaft). It is a partial vertical front view which shows the state with which it mounted | wore with the sleeve of a portable electric tool (impact driver). It is a front view which shows the state with which the manual tool (T-shaped tap holder) was mounted | worn.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and all the embodiments satisfying the requirements described in the claims of the utility model registration. Is included.
In the present specification, the axial direction from the shank tip C to the tip machining portion (threaded portion B) is the front, and the opposite side is the back.

As shown in the perspective view of FIG. 1 and the front view of FIG. 2, the tap A according to the embodiment of the present invention is a male screw type tool for forming a female screw in a prepared hole of a workpiece, and has a front end portion. The threaded portion B, which is the tip processed portion, is formed, and the depth of the groove for discharging chips is shallow so as to be compatible with the use of a portable electric tool described later.
In addition, a hexagonal mounting hole of a portable electric tool D that can be rotated in the forward and reverse directions (see reference numeral 6 in the front view of the partial vertical section in FIG. 4) is provided at the rear end of the tap A (the shank tip C spaced apart from the screw B). Hexagonal column-shaped first mounting shaft 1 that can be mounted on the square, and a square mounting of the manual tool E at the rear side position of the hexagonal columnar first mounting shaft 1 (the end farther from the threaded portion B than the hexagonal columnar first mounting shaft 1) A quadrangular prism-shaped second mounting shaft 2 that can be mounted in the hole 4 (see reference numeral 4 in the front view of FIG. 5) is provided coaxially.
Furthermore, a circumferential groove 3 that engages with a ball 8 (see FIG. 4) of the one-touch mounting mechanism 5 of the portable electric tool D is formed in an intermediate portion in the axial direction of the hexagonal columnar first mounting shaft 1.

In the front view of FIG. 2, for example, the total length L of the tap A is 70 mm, the length L0 from the front end to the rear end of the threaded portion B is 20 mm, the axial length L1 of the hexagonal column-shaped first mounting shaft 1 is 17 mm, The axial length L2 of the second mounting shaft 2 is 7 mm, the length L3 from the rear end surface (shank tip surface) to the circumferential groove 3 is 14 mm, and the axial length L2 of the square columnar second mounting shaft 2 is the hand. It may be larger than the standard standard size such as a tap.
In addition, in the left side view of FIG. 3 (viewed from the rear), for example, the hexagonal columnar first mounting shaft 1 has a two-surface width W1 of 6.35 mm (1/4 inch) and the quadrangular columnar second mounting shaft 2. Although the width across flats W2 is 4.5 mm, the cross section of the square columnar mounting shaft 2 is larger than the hexagonal outer shape of the cross section of the hexagonal columnar first mounting shaft 1 (cross section perpendicular to the front-rear direction (axial direction)). It is only necessary that the outer shape is reduced and the hexagonal columnar first mounting shaft 1 can be fitted into the hexagonal mounting hole 6 (see FIG. 4) of the portable electric tool D.

Next, attachment of the tap A to an impact driver, which is an example of a portable electric tool D that can rotate forward and reverse, will be described with reference to a partially longitudinal front view of FIG.
By pulling the sleeve 7 of the impact driver's one-touch mounting mechanism 5 so as to move forward, the ball 8 can move radially outward, so that the hexagonal columnar first mounting shaft 1 of the tap A is inserted into the hexagonal mounting hole 6. The front end surface (rear surface) of the square columnar second mounting shaft 2 abuts against the inner wall surface of the hexagonal mounting hole 6.
When the hand is released from the sleeve 7, the sleeve 7 returns to the original position due to the restoring force of the compression coil spring 9, so that the ball 8 is engaged in the circumferential groove 3 of the tap A.
Therefore, the tap A is attached to the impact driver in a state where it is prevented from coming off.
The tap A is attached not only to the portable electric tool D capable of rotating in the forward / reverse direction provided with the one-touch attachment mechanism 5 but also to the portable electric tool D capable of rotating in the forward / reverse direction including a chuck mechanism such as a three-jaw chuck. be able to.

Next, attachment of the tap A to a T-shaped tap holder which is an example of the manual tool E will be described with reference to the front view of FIG.
By inserting the square columnar second mounting shaft 2 at the rear end of the tap A into the square mounting hole 4 of the T-shaped tap holder, the tap A is mounted on the T-shaped tap holder.

According to the tap A configured as described above, the hexagonal columnar first mounting shaft 1 of the shank tip C is used when attaching to the portable electric tool D, and the shank tip C of the shank tip C is attached when attaching to the manual tool E. Because it uses the square columnar second mounting shaft 2, it can be used with a portable power tool D such as an impact driver that can be rotated in forward and reverse directions without using an adapter, and it can also be used with a manual tool E such as a tap wrench. Therefore, it is not necessary to provide separate taps for the portable power tool D and the manual tool E.
In addition, the depth of the groove for discharging chips is reduced to match the use of the portable electric tool D compared to a tap that is a standard product having a square columnar mounting shaft formed at the shank tip C. Due to the core thickness, durability is improved when used in a state where it is inserted into the square mounting hole 4 of the manual tool E such as a tap wrench and a T-shaped tap holder (the number of times of use until the tap A is broken increases). ).
Further, the hexagonal columnar first mounting shaft 1 is formed with a circumferential groove 3 that engages with the ball 8 of the one-touch mounting mechanism 5 of the portable electric tool D in the middle portion in the axial direction. Since it can be used by being attached to the portable electric tool D, convenience during use is improved.

A Tap B Threaded part C Shank tip D Portable electric tool E Manual tool L Full length L0 Length from front end to threaded part rear end L1 Axial length of hexagonal columnar first mounting shaft L2 Square columnar second mounting shaft Axial length L3 Length from shank tip surface to circumferential groove W1 Width across flats of hexagonal columnar first mounting shaft W2 Width across flats of square columnar second mounting shaft 1 Hexagonal columnar first mounting shaft 2 Square columnar second mounting Shaft 3 Circumferential groove 4 Square mounting hole 5 One-touch mounting mechanism 6 Hexagonal mounting hole 7 Sleeve 8 Ball 9 Compression coil spring

Claims (2)

A tap for threading a workpiece,
A hexagonal columnar first mounting shaft that can be mounted in a hexagonal mounting hole of a portable electric tool at the tip of the shank spaced from the threaded portion, and a square of the manual tool at the end farther from the threaded portion than the first mounting shaft A tap characterized by being provided coaxially with a square columnar second mounting shaft that can be mounted in the mounting hole. 2. The tap according to claim 1, wherein the hexagonal columnar first mounting shaft is formed with a circumferential groove that engages with a ball of the one-touch mounting mechanism of the portable electric tool at an intermediate portion in the axial direction thereof.

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