KR101672297B1

KR101672297B1 - Apparatus for cutting a hrsa

Info

Publication number: KR101672297B1
Application number: KR1020150185431A
Authority: KR
Inventors: 박광수; 김숙환
Original assignee: 주식회사 포스코; 재단법인 포항산업과학연구원
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2016-11-03

Abstract

In order to prevent breakage of the carbide insert tip during machining of a hard machining of high hardness, a cutting tool body so as to easily adjust the angle of the cutter according to cutting conditions of the hard machining material; At least one cutter having a cemented carbide insert fixed to an end of the cutting tool body; An angle adjuster installed in an inner space of the cutter to adjust the angle of the cutter by opening or closing the cutter; And an angle regulating portion power transmitting means connected to the angle regulating portion.

Description

{APPARATUS FOR CUTTING A HRSA}

Disclosed is a cutter device capable of machining a hard material.

Generally, in the case of a cutter for cutting incombustible materials such as inconel, titanium, and high manganese steel, a phenomenon that a carbide insert tip of a cutter is damaged by high hardness of a material frequently occurs.

To compensate for this, carbide tool makers are controlling the fracture phenomenon of carbide due to increase of toughness of carbide itself or change of cutting edge due to cobalt amount control of carbide. However, this is not the best solution for cutting high hardness materials.

In addition, in the case of the above-mentioned cemented carbide insert, it is usually possible to use the cemented carbide tip four or more times if the carbide tip is machined by turning it to the other side even if one side is worn.

Provided is a cutter device for machining a hard material which can easily adjust the angle of the cutter in accordance with cutting conditions of the hard material in order to prevent breakage of the carbide insert tip when machining a hard material having a high hardness.

A cutter device for machining a difficult material includes: a cutting tool body; At least one cutter having a cemented carbide insert fixed to an end of the cutting tool body; An angle adjuster installed in an inner space of the cutter to adjust the angle of the cutter by opening or closing the cutter; And an angle regulating unit power transmitting means connected to the angle regulating unit.

The angle regulating portion power transmission means includes a bevel gear connected to a lower portion of the angle regulating portion.

The cutter is rotatably mounted to the cutting tool body via a hinge.

The angle adjusting unit includes a wedge member installed between the cutters and opening the cutter according to the amount of movement, a feed screw rotatably installed at the center of the cutting tool body, and a feed screw movably coupled to the feed screw, As shown in Fig.

The bevel gears are engaged with each other at right angles to each other so that one gear is connected to the lower end of the feed screw and rotated like a feed screw, and the other gear is rotatably disposed toward the cutting tool body.

And the other gear of the bevel gear is formed with a wrench groove into which the other gear rotating tool is inserted.

The wedge member further includes a guide groove formed along a moving direction at a side portion of the wedge member in contact with the cutter.

The cutter further includes a guide bar inserted and guided in the guide groove of the wedge member.

And an ELM guide installed between the cutter and the wedge member to guide the wedge member up and down.

The LM guide includes a rail fixed to the cutter or the wedge member, and a conveying member moved along the rail.

The wedge member has a center hole formed at its center portion and the transfer block is inserted into the center hole.

And the feed screw is configured to press the cutter member to adjust the angle through the rotation of the wedge member.

The wedge member has a structure in which at least one fixing pin is inserted in a direction perpendicular to the conveying screw so that the rotational force of the conveying screw is transmitted to the wedge member.

According to this apparatus, the cutting angle of the cutter can be easily adjusted by opening the cutter outwardly by a simple operation, and the machining of the hard material can be performed conveniently by adjusting the angle of the cutter. It is possible to prevent breakage of the carbide tip.

1 is a view schematically showing a cutter apparatus for machining a difficult-to-cut material according to the present embodiment.
Fig. 2 is a view schematically showing a structure of a cutter apparatus for machining a difficult-to-cut material according to the present embodiment.
3 is a view schematically showing the inside of a cutter apparatus for machining a difficult-to-cut material according to the present embodiment.
Fig. 4 is a view schematically showing the outer side of the cutter apparatus for machining a difficult-to-cut material according to the embodiment.
FIG. 5 is a view schematically showing an angle adjusting unit of the cutter apparatus for machining a difficult-to-cut material according to the present embodiment.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 is a view schematically showing a cutter apparatus for machining a difficult-to-cut material according to the present embodiment.

Fig. 2 is a view schematically showing a structure of a cutter apparatus for machining a difficult-to-cut material according to the present embodiment.

3 is a view schematically showing the inside of a cutter apparatus for machining a difficult-to-cut material according to the present embodiment.

Fig. 4 is a view schematically showing the outer side of the cutter apparatus for machining a difficult-to-cut material according to the embodiment.

1 to 4, a cutter apparatus for machining a difficult-to-cut material according to the present embodiment includes a cutting tool body 10 and at least one cemented carbide insert 10 disposed on the cutting tool body 10, An angle adjuster 30 installed in an inner space of the cutter 20 to adjust the angle of the cutter 20 by opening or closing the cutter 20, And an angle regulating unit power transmitting means connected to the angle regulating unit 30.

The angle regulating portion power transmitting means may include a bevel gear 40 connected to a lower portion of the angle regulating portion 30. [

That is, the cutting device for machining a difficult-to-cut material has an optimal cutting condition by changing the angle of incision by adjusting the angle of the cutting tip 21, so that it can be conveniently used for machining a rough material.

The cutter 20 is rotatably mounted on the cutting tool body 10 via a hinge 22 to adjust the angle of the cutter 20 through the operation of the angle adjusting unit 30, The angle of the cemented carbide tip 21 fixed to the cutter 20 can be adjusted through the movement of the cutter 20.

The angle adjusting unit 30 includes a wedge member 31 installed between the cutters 20 to widen the cutter 20 according to the movement amount of the wedge member 31 and a wedge member 31 disposed between the cutter 20 and rotatably installed at the center of the cutting tool body 10 A transfer screw 32 and a transfer block 33 movably coupled to the transfer screw 32 and coupled to the wedge member 31.

The angle adjusting unit 30 includes the wedge member 31, the feed screw 32 and the feed block 33. The feed block 33 is moved through the rotation of the feed screw 32, The wedge member 31 coupled with the transfer block 33 moves in contact with the cutter 20 as the transfer block 33 moves and the cutter 20 is moved through the movement of the wedge member 31, Or to open or close.

The bevel gear 40 is engaged with the bevel gear 40 at right angles to each other so that one gear 41 is connected to the lower end of the feed screw 32 and rotated as the feed screw 32, And is rotatably disposed toward the side of the body 10.

The other gear 42 of the bevel gear 40 is formed with a wrench groove 42a into which a tool for rotating the other gear 42 is inserted.

That is, the wedge member 31 can be moved by inserting a tool into the wrench groove 42a and rotating the feed screw 32. [ The feed screw 32 rotates the wedge member 31 to press the cutter 20 to adjust the angle.

For example, when the other gear 42 of the bevel gear 40 is rotated forward by the tool, one gear 41 of the bevel gear 40 connected to the conveying screw 32 is rotated to rotate the conveying screw 32 So that the wedge member 31 moves in the direction of the cemented insert tip 21 of the cutter 20 to cause the cutter 20 to be opened.

When the other gear 42 of the bevel gear 40 is reversely rotated by the tool, one gear 41 of the bevel gear 40 connected to the conveying screw 32 reversely rotates the conveying screw 32, So that the wedge member 31 moves in the direction of the cutting tool body 10 so that the cutter 20 can be dislocated.

FIG. 5 is a view schematically showing an angle adjusting unit of the cutter apparatus for machining a difficult-to-cut material according to the present embodiment.

5, the wedge member 31 further includes a guide groove 31a formed along a moving direction at a side portion of the wedge member 31 in contact with the cutter 20, And guide bars 20a which are inserted and guided in the guide grooves 31a of the guide grooves 31a and 31a.

The cutter 20 and the wedge member 31 are assembled such that the wedge member 31 is slidably engaged with the cutter 20 by the engagement of the guide bar 20a and the guide groove 31a, The wedge member 31 is slid along the cutter 20 by the rotation of the screw 32 to push the cutter 20 so that the wedge member 31 presses the cutter 20, 20) can be opened.

The cutter 20 is connected to the cutting tool body 10 and the hinge 22 so that the angle of the cutting tool body 10 can be changed.

The apparatus may further include an ELM guide 50 installed between the cutter 20 and the wedge member 31 to guide the wedge member 31 up and down. 50 is composed of a rail 51 fixed to the cutter 20 or the wedge member 31 and a conveying member 52 moved along the rail 51.

That is, the wedge member 31 can move along the LM guide 50 provided on the tapered inclined surface of the wedge member 31 so that the angle of the cutter 20 can be adjusted by opening or closing the cutter 20, As the angle is adjusted, the cutting angle of the cemented carbide insert 21 provided at the end of the cutter 20 can be changed.

The wedge member 31 has a center hole 31b formed at the center of the wedge member 31 and the transfer block 33 is inserted into the center hole 31b. And the wedge member 31 presses the cutter 20 to adjust the angle.

2 and 5, at least one fixing pin 60 is inserted into the wedge member 31 in a direction perpendicular to the conveying screw 32 so that the rotational force of the conveying screw 32 is transmitted to the wedge member 31). The wedge member 31 can be fixed through the fixing pin 60.

Therefore, the cutting angle of the cutter 20 can be easily adjusted by opening the cutter 20 outwardly with a simple operation, and the machining of the hard material can be easily performed through the adjustment of the angle of the cutter 20, It is possible to prevent breakage of the cemented carbide insert tip 21 when machining a difficult-to-grind material.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

10: cutting tool body 20: cutter
20a: Guide Bar 21: Carbide Insert Tips
22: hinge 30: angle adjusting portion
31: wedge member 31a: guide groove
31b: center hole 32: feed screw
33: Feed block 40: Bevel gear
41: one side gear 42: the other side gear
42a: Wrench 50: LM Guide
51: rail 52:
60: Fixing pin

Claims

A cutting tool body;
At least one cutter having a cemented carbide insert fixed to an end of the cutting tool body;
An angle adjuster installed in an inner space of the cutter to adjust the angle of the cutter by opening or closing the cutter; And
And an angle regulating unit power transmitting means connected to the angle regulating unit,
The angle adjusting portion includes a wedge member installed on the cutter and opening the cutter according to the movement amount, a feed screw rotatably installed in the center of the cutting tool body, and a feed screw movably coupled to the feed screw and coupled to the wedge member Cutter device for machining hard materials.

The method according to claim 1,
And the angle regulating portion power transmitting means includes a bevel gear connected to a lower portion of the angle regulating portion.

The method according to claim 1,
Wherein the cutter is rotatably mounted to the cutting tool body via a hinge.

delete

3. The method of claim 2,
Wherein the bevel gear is engaged with the bevel gear at right angles to each other so that one gear is connected to the lower end of the feed screw and rotated like a feed screw and the other gear is rotatably disposed toward a side of the cutting tool body.

6. The method of claim 5,
And the other gear of the bevel gear is formed with a wrench groove into which the other gear gear is inserted.

The method according to claim 1,
Wherein the wedge member further comprises a guide groove formed along a moving direction at a side portion of the wedge member in contact with the cutter.

8. The method of claim 7,
Wherein the cutter further comprises a guide bar inserted and guided in the guide groove of the wedge member.

The method according to claim 1,
And an LM guide installed between the cutter and the wedge member to guide the wedge member up and down.

10. The method of claim 9,
Wherein the LM guide includes a rail fixed to the cutter or the wedge member, and a conveying member moved along the rail.

The method according to claim 1,
Wherein the wedge member is formed with a center hole at a central portion of the wedge member, and the transfer block is inserted into the center hole.

The method according to claim 1,
Wherein the feed screw presses the cutter to adjust an angle by rotating the wedge member.

The method according to claim 1,
Wherein at least one fixing pin is inserted into the wedge member in a direction perpendicular to the conveying screw so that the rotational force of the conveying screw is transmitted to the wedge member.