JP2000061728A - Cutting tool to chamfer hole inlet and outlet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool to easily and quickly work with even when a position to work is in a narrow place though disposal and chamfering of burrs is carried out as these burrs are produced at an outlet and inlet of a hole at the time of drilling a work. SOLUTION: A chamfering tooth 2 having a cutting edge in an inclined state is axially supported on a holder 1 in a state free to fit with a play, and rotation of the chamfering tooth 2 is carried out by inserting and rotating a wrench. Consequently, as it is possible to speedily and easily carry out disposal and chamfering of burrs even in a narrow place in the case when hole depth is large by using this cutting tool for chamfering, it is useful for improvement of working efficiency and improvement of quality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for treating and chamfering burrs and burrs formed at the entrance and exit of a hole during hole processing.

[0002]

2. Description of the Related Art In the hole shape or groove shape part of a work,
Since burrs and burrs are generated at the entrance and exit of the holes when drilling is performed, the burrs and burrs are treated and chamfered. As a method of this, the holes on the outer peripheral side are chamfered cutters, polishing tools, etc. Can be done easily. On the other hand, on the inner side of the hole, sanding, sandpaper, or scraper is used. Then, it is conceivable to work with a tool for removing tartar used by the dentist, and a small tool used for treating teeth.

[0003]

In the conventional technique, the chamfering work of the hole in the hole-shaped portion is easy to scratch the portion other than the chamfered portion in a narrow place, and the work is not easy. There is a problem such as spending labor. For these reasons, there is a need for tools that can be easily used even in tight spaces.

[0004]

In order to solve the above-mentioned problems, in the cutting tool of the present invention, the chamfering portion of the hole to be chamfered is directly chamfered while the cutting edge (5) is pressed against the chamfered portion. By rotating the blade (2), it is possible to process burrs and burrs and chamfer, and by using a wrench according to the hole depth, chamfering work is possible even if the hole depth is long In addition, there is a cutting tool for chamfering as described below, depending on the chamfered portion.

A chamfering blade (2) having an inclined cutting blade (5) at one or more places at the shaft end and a wrench hole (6) provided at the shaft center, and the chamfering blade is the tip of a holder (1). A cutting tool for chamfering the entrance and exit of a hole, which is incorporated in the state of loose fitting.

[0006] A chamfering blade (3) having an inclined cutting blade (5) at one or more places at the shaft end and a wrench hole (6) provided at the shaft center, and the chamfering blade is the tip of a holder (1). A cutting tool for chamfering the entrance and exit of a hole, which is incorporated in the state of loose fitting.

[0007] One or more inclined cutting blades (5) are attached to both shaft ends, and a wrench hole (6) is provided in one shaft center portion.
A chamfering blade (4) provided with a chamfering blade, and a chamfering blade having a chamfering blade incorporated into the tip of a holder (1) in a loosely fitted state to chamfer the entrance and exit of a hole.

The shape of the wrench hole may be square, hexagonal, star-shaped, or any other type.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described based on examples with reference to the drawings. As shown in FIG. 7, while pressing the cutting edge (5) of the chamfering blade (2) against the chamfered portion at the inner side of the hole, the wrench (11) is then passed through the machined hole and the wrench hole (6) provided in the chamfering blade (6). Insert into. Then turn the wrench and rotate the chamfer blade,
It treats burrs and chamfers.

When using the cutting tool of the present invention, a lightweight work piece can be efficiently worked by fixing it with a vise or a vise.

[0011]

As described above, when the hole diameter is thin and long, work can be performed even in a narrower area, and since the cutting edge of the chamfering blade is applied only to the chamfered portion, other areas are damaged. The burrs and burrs are quickly and easily treated and chamfered. Therefore, it is possible to provide a cutting tool for chamfering a hole entrance / exit that can improve work efficiency and can be useful for quality improvement.

[Brief description of drawings]

FIG. 1 is an overall front view of a chamfering blade (2) assembled to a holder (1), and the vicinity of the mounting of the chamfering blade is a sectional view.

FIG. 2 is a front view of a chamfering blade (2).

FIG. 3 is a front view of a chamfering blade (3).

FIG. 4 is a front view of a chamfering blade (4).

FIG. 5 is a front view showing an embodiment in which the chamfering blade (4) is attached to the holder (1).

FIG. 6 is a horizontal sectional view showing an embodiment in which the chamfering blade (4) is attached to the holder (1).

FIG. 7 is an explanatory view showing a state of the embodiment of the cutting tool of the present invention.

[Simple explanation of symbols]

1 holder 1A anti-slip handle 2 chamfering blade 3 chamfering blade 4 chamfering blade 5 cutting edges 6 wrench hole 7 Shaft 8 retaining ring groove 9 retaining ring 10 Work (workpiece) 10A tap hole 10B through hole 11 wrench 12 retaining pin

Claims (3)

[Claims] 1. A chamfering blade (2) having an inclined cutting blade (5) at a shaft end and a wrench hole (6) provided at a shaft center, and a chamfering blade at a tip of a holder (1). A cutting tool that chamfers the hole entrance and exit that is axially supported in the loose fitting state. 2. A chamfering blade (3) having an inclined cutting blade (5) at the shaft end and a wrench hole (6) provided at the shaft center, and a chamfering blade at the tip of the holder (1). A cutting tool that chamfers the hole entrance and exit that is axially supported in the loose fitting state. 3. A chamfering blade (4) having inclined cutting blades (5) at both shaft ends, wherein a wrench hole (6) is provided in one shaft center portion, A cutting tool for chamfering a hole entrance / exit, which is axially supported in a free-fitting state at the tip of a holder (1).