KR20130047393A - Back spot facing tool - Google Patents

Abstract

The present invention relates to a back seat digging tool, the center shaft hole is formed and the cutting piece is processed radially at least one cutting edge radially on the upper surface around the center axis hole; And a tool rod having an upper coupling portion formed at an upper end thereof so as to mutually engage with the drill apparatus, and a lower coupling portion formed at an lower end thereof so as to be coupled orthogonally to the cutting piece.

Description

Back seat digging tool {BACK SPOT FACING TOOL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back seat digging tool, and relates to a back seat digging tool that cuts a position where a bolt head is seated on a rear surface of the bolt fastening hole after inserting a tool into a bolt fastening hole of an arbitrary workpiece.

In general, there is no tool for cutting the place where the bolt head is seated on the back of the bolt fastening hole formed in the machined seat of the ship is processed by using a self-made temporary tool.

1 is a view showing a temporary tool, a cutting part 2 for rear seat digging is formed at the lower end of the tool rod 1 coupled to the drill apparatus.

However, such a temporary tool has the following problems.

That is, the temporary tool has a problem that the cutting part 2 is damaged or the machining surface state to be processed is poor when the tool rod 1 is caught on the machining surface or subjected to an operating load during use.

In addition, when the tool rod 1 and the cutting part 2 are not set correctly, there is a problem that the processing quality is reduced, such as out of the range of the prescribed dimensions associated with the rear seat digging.

In addition, after processing the bolt fastening hole using the drill device, a separate installation equipment for installing a temporary tool for digging back seats is required in the drill device, so that the number of work is increased, there is a problem that the work performance is reduced. .

In addition, when the temporary tool is detached from the drill device and then remounted to the drill device again to be installed in another bolt fastener, it is cumbersome to accurately set the same setting value as the initial setting value. There is a problem that is excessively consumed.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to axially couple a circular cutting piece having a central shaft hole that can be replaced in various dimensions depending on the size of the machining surface to the tool rod At the same time, a separate cutting tip is attached to and detached from the cutting piece so that the cutting piece is not easily broken, and at the same time, it is possible to dig back a precise dimension.

In addition, without additional equipment, to form a coupling configuration coupled to the drill device in a configuration that is easy to disassemble and to improve the workability.

Tool rods inserted into the central shaft hole of the cutting piece are formed perpendicular to each other so that a separate horizontal setting operation is not required.

In order to achieve the above object, the back seat digging tool according to the present invention includes a cutting piece in which at least one cutting edge is radially formed on an upper surface of the center axis hole and a center axis hole is formed; And a tool rod having an upper coupling portion formed at an upper end thereof so as to mutually engage with the drill apparatus, and a lower coupling portion formed at an lower end thereof so as to be coupled orthogonally to the cutting piece.

The cutting piece is characterized in that it is made of a standardized configuration so that it can be replaced in various dimensions according to the size of the processing surface.

The cutting piece is characterized in that the removable cutting tip is provided on the side surface corresponding to the rotational direction of the cutting edge.

The upper coupling portion, the coupling groove formed in the drill device; A coupling protrusion formed on the tool rod to generate a coupling force by interacting with the coupling groove; And a fixing piece which is fastened and fixed to the coupling groove and the coupling protrusion to generate a coupling force.

The lower coupling portion, the central shaft hole formed in the cutting piece; A fixed shaft formed in the tool rod and generating a coupling force by interacting with the central shaft hole; A locking step formed to face each other in a central axis direction below the central axis hole; And a corresponding catching jaw formed at a lower portion of the tool rod and corresponding to the catching jaw.

The guide bush is inserted into the tool rod and fixed to the seat to guide the lifting and lowering movement of the tool rod.

According to the tool for backseat digging according to the present invention having the above-described configuration, the cutting piece is axially coupled to the tool rod with a circular cutting piece having a central axis hole that can be replaced with various dimensions according to the size of the processing surface. By attaching and detaching a separate cutting tip, the cutting piece is not easily broken, and there is an effect capable of digging a back seat of an accurate dimension.

In addition, without additional equipment, it is possible to improve the workability by forming a coupling configuration coupled to the drill device in a configuration that is easy to disassemble and assembly.

Since the tool rods inserted into the central shaft holes of the cutting piece are formed perpendicular to each other, a separate horizontal setting operation is not required, thereby improving workability.

1 is a cross-sectional view showing a rear seat digging tool according to the prior art.
Figure 2 is an exploded perspective view showing a back seat digging tool according to the present invention.
3 is a cross-sectional view showing a coupling portion of the drill device and the rear seat digging tool according to the present invention.
4 is an operation diagram showing a coupling state of the tool rod and the cutting piece of the back seat digging tool according to the present invention.
5 is a mounting view showing a state in which a rear seat digging tool is mounted on the drill apparatus according to the present invention.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view showing a rear seat digging tool according to the present invention, Figure 3 is a cross-sectional view showing a coupling portion of the drill device and the rear seat digging tool according to the present invention, Figure 4 is a rear seat digging according to the present invention It is an operation | movement figure which shows the engagement state of the tool rod of a tool, and a cutting piece.

5 is a mounting view showing a state in which a rear seat digging tool is mounted on the drill apparatus according to the present invention.

As shown in FIG. 2, the rear seat digging tool according to the present invention is mounted to a drill device 50 for processing the bolt fastening hole 110 to the seat 100, and the cutting tool 10 is used as a medium. It is a tool for cutting the position where the bolt head is seated on the rear surface of the bolt fastening hole (110).

The rear seat digging tool has a circular horizontal hole in which a central axis hole 11 is formed and at least one cutting edge 12 capable of radially precise depth and surface processing on the upper surface of the central axis hole 11 is processed. The cutting piece 10 having a cross section is included.

In particular, the cutting piece 10 is standardized to be replaced with various dimensions according to the size of the working surface, and is made of chromium molybdenum steel resistant to impact.

In addition, the cutting piece 10 is provided with a detachable cutting tip 13 on one side of the cutting edge 12, that is, a side surface corresponding to the rotational direction of the cutting edge 12. Accordingly, the cutting tip 13 is easily replaceable when broken during use.

In addition, the back seat digging tool, an upper coupling portion is formed at the upper end to engage with the drill device 50, a tool rod 20 having a lower coupling portion formed at the lower end to be coupled to the cutting piece 10 It will include.

Here, the upper coupling portion, as shown in Figure 3, the coupling groove 51 formed in the drill device 50, the tool rod 20 is formed in the coupling groove 51 and interact with the coupling force It includes a coupling protrusion 21 for generating.

Here, the upper coupling portion further includes a fixing piece 40 which is fastened and fixed to facilitate the assembly and disassembly of the coupling groove 51 and the coupling protrusion 21.

In addition, the lower coupling portion, as shown in Figure 4, the central shaft hole 11 formed in the cutting piece 10, and the tool rod 20 is formed in the interaction with the central shaft hole 11 It includes a fixed shaft 22 for generating a coupling force.

Here, the lower coupling portion, the locking jaw 14 formed to face each other in the central axis direction and the tool at the lower portion of the central shaft hole 11 of the cutting piece 10 so as to improve the fixing force and facilitate the disassembly assembly It is formed in the lower portion of the rod 20 and further includes a corresponding catching jaw 23 corresponding to the catching jaw (14).

That is, when the cutting piece 10 is rotated approximately 90 degrees while the central shaft hole 11 of the cutting piece 10 is inserted into the fixed shaft 22 of the tool rod 20, the locking jaw The tool rod 20 and the cutting piece 10 are firmly fixed while the 14 and the corresponding catching jaw 23 overlap in a straight line.

This fixing work is called 'shank fitting'.

The cutting piece 10 and the tool rod 20 is not limited to the coupling between the engaging jaw 14 and the corresponding engaging jaw 23 as described above, for example, may also be screwed.

When the tool rod 20 and the cutting piece 10 are coupled to each other, the tool rod 20 and the cutting piece 10 may be formed to be orthogonally coupled to each other, and thus, may be cut into another cutting piece 10. There is no difficulty to reset horizontally when replacing.

On the other hand, the tool rod 20 is naturally smaller than the bolt fastening hole 110 is processed by the drill device 50 is formed naturally.

As a result, when the tool rod 20 is inserted into the bolt fastening hole 110, the tool rod 20 may not move to the center while swinging from side to side while performing the rear seat digging operation. The guide bush 30 is inserted into the outside of the tool rod 20 so as to be centered without shaking, and fixed to the seat 100 to guide the lifting and lowering movement of the tool rod 20.

As shown in FIG. 5, the guide bush 30 has a cylindrical structure having a flange 31 formed thereon, and the outer diameter thereof is approximately similar to the inner diameter of the bolt fastening hole 110, so that the guide bush 30 is closely coupled to each other. The inner diameter of the tool rod 20 is approximately similar to the outer diameter of the tool rod 20 in a state where it is closely coupled to each other, so that the tool rod 20 can be guided in the vertical direction.

Accordingly, due to the guide bushing 30 coupled to the bolt fastening hole 110, the tool rod 20 is guided up and down by the drill device 50 without shaking.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Various modifications to the embodiments are also within the scope of the claims of the present invention.

10: cutting piece 11: center axis hole
12: cutting edge 13: cutting tip
14: Jam Jaw 20: Tool Rod
21: engaging projection 22: fixed shaft
23: countermeasure jaw 30: guide bush
31: flange 32: cylinder
40: fixed piece 50: drill device
51: coupling groove

Claims (6)

A cutting piece in which a central axis hole is formed and at least one cutting edge is radially processed on an upper surface of the central axis hole; And
And a tool rod having an upper coupling portion formed at an upper end thereof so as to mutually engage with a drill device and having a lower engaging portion formed at a lower end thereof so as to be orthogonal to the cutting workpiece.
The method of claim 1,
The cutting piece is a rear seat digging tool, characterized in that the configuration consisting of a standardized configuration so that it can be replaced in various dimensions according to the size of the processing surface.
The method of claim 1,
The cutting piece is a rear seat digging tool, characterized in that the removable cutting tip is provided on the side corresponding to the rotation direction of the cutting edge.
The method of claim 1,
The upper coupling portion,
A coupling groove formed in the drill apparatus;
A coupling protrusion formed on the tool rod to generate a coupling force by interacting with the coupling groove; And
The rear seat digging tool, characterized in that it comprises a fixing piece which is fastened and fixed to the coupling groove and the coupling protrusion to generate a coupling force.
The method of claim 1,
The lower coupling portion,
A central shaft hole formed in the cutting piece;
A fixed shaft formed in the tool rod and generating a coupling force by interacting with the central shaft hole;
A locking step formed to face each other in a central axis direction below the central axis hole; And
It is formed in the lower portion of the tool rod, the rear seat digging tool, characterized in that it comprises a corresponding catching jaw corresponding to the catching jaw.
The method according to any one of claims 1 to 5,
And a guide bush inserted into the outside of the tool rod and fixed to the seat to guide the lifting and lowering of the tool rod.

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