KR20190052961A - Manufacturing apparatus for round bar - Google Patents

Abstract

The present invention relates to an apparatus for machining a round bar, which improves manufacturing efficiency in an economic aspect by suppressing waste of a material during a process of manufacturing a ring structure in an annular shape by machining a round rod, and automatizes manufacture of the ring structure in an annular shape. To this end, the present invention is configured by comprising: a fixating unit fixating a round rod; a shaping unit moving forward and backward in a longitudinal direction corresponding to the fixated round rod, and having a bite at an end portion corresponding to the round rod so as to dig a groove in an annular shape on an inner end portion of the round rod; and a cutting unit cutting a front end portion of the round rod at which the groove in an annular shape is formed by a predetermined length.

Description

Manufacturing apparatus for round bar

The present invention relates to a round bar machining apparatus, and more particularly, to a round bar machining apparatus which is capable of reducing the waste of material during manufacturing of an annular ring structure by processing a round bar and, at the same time, To a round bar machining apparatus capable of automating production.

Generally, in the production of an annular ring structure that can be utilized in various industrial fields depending on the purpose and use of the pipe, for example, there may be a method of cutting a pipe having a predetermined length.

In another example, a metal plate having a predetermined width and a length is milled so as to correspond to the length of the annular structure, and then a plurality of holes are formed in the plate through a drilling operation, cutting the plate material into a plurality of square blocks by cutting the plate into a shape in which the holes are formed and then cutting each square block by a lathe operation to form an annular ring structure There might be a way to make it.

As another example, there may be a method of cutting the outer periphery of the round bar to have a predetermined diameter, then forming a hole through a drilling operation, and cutting it to a predetermined length.

However, when cutting the above-mentioned pipe, it is impossible to increase the thickness of the annular ring structure because the pipe has to have a certain thickness range, and it is difficult to manufacture an annular ring structure having various dimensions in accordance with various use purposes and applications There was a problem.

In the case of machining the above-mentioned metal plate or round bar, the portion to be cut, that is, the surplus portion of the metal plate or the round bar, must be discarded by the cutting tip, so that waste of the material is inevitable and the abandoned cutting tip is melted again Even if recycled, the complexity of the process can not be avoided, and there is a problem that the production efficiency in terms of economy is inferior.

Korean Utility Model Publication No. 20-1992-0002217 (published Feb. 24, 1992) Korean Patent Publication No. 10-2017-0109410 (published on September 29, 2019)

It is an object of the present invention to provide a method of manufacturing a circular ring structure by processing a round bar so as to reduce the waste of material and increase the production efficiency in terms of economy while automating the manufacture of such an annular ring structure And a round bar machining apparatus.

According to an aspect of the present invention, there is provided a round bar machining apparatus comprising: a fixing part for fixing a round bar; A cutting portion for forward and backward movement in the longitudinal direction corresponding to the fixed round bar and having a boss at the end corresponding to the round bar and for digging an annular groove in the inside of the end of the round bar; And a cut section for cutting the front end of the round bar having the annular groove to a predetermined length.

The fixing unit includes: a first vise member for tightly pressing and fixing the outer circumference of a round bar disposed at the front end of the table on the rear side of the cutout; And a second vise member installed at the rear of the first vise member to grip the outer circumference of the round bar and to move forward by a predetermined length.

The first vise member may include: a fixed vise provided on one side in the width direction of the table; And a movable vise which is installed on the other side of the fixed vise and which moves in the width direction and closely presses the round bar arranged forward with the fixed vice.

And the pair of feeder vices have a shape corresponding to the outer circumference of the round bar and can be installed so as to face each other have.

The second vice member may be installed on a first rail member disposed along the longitudinal direction on the table, and may be movable forward and backward.

The cutting unit includes a body having an annular end shape and moving backward by a preset length while receiving a rotational power from a power source, A boss that protrudes rearward from a rear end of the body and cuts inside the front end of the round bar to dig an annular groove; And a discharge groove formed along the outer circumferential length direction of the body adjacent to the byte to allow discharge of the cutting tip by cutting the byte.

Wherein the one or more selected one of the plurality of bytes is protruded rearward beyond the remaining one of the plurality of bytes and that the outer circumference and the inner circumference of the body are separated from each other, And the remaining bosses may protrude inward or outward in the width direction of the thickness between the outer periphery and the inner periphery of the body.

Wherein the cutting portion comprises: a shaft member provided rotatably at a front end portion of the table so as to be movable forward and rearward, and having a second rail member; A lifting plate mounted on the second rail member and lifted and lowered and having a third rail member; The power transmission member provided on the inner side is connected to the power source to transmit rotational power to the body and is arranged to cross the inside from the front end portion, A housing having a coolant supply line; And a mount member interposed between the body and the housing.

The body may have at least one cutting oil supply hole arranged in the longitudinal direction between the inner peripheral edge and the outer peripheral edge from the front end to the rear end so as to communicate with the connecting member provided at the front end portion to be connected to the cutting oil supply line.

의 비율을 유지하면서 상호 연동하는 승강을 이루되, 상기 가동바이스가 폭 방향 일측으로 이동하면 하강하며, 상기 가동바이스가 폭 방향 타측으로 이동하면 상승할 수 있다.Wherein the fixing portion includes a first vice member for tightly pressing and fixing the outer periphery of a round bar disposed at a rear end of the cut portion at a front end portion on the table, And a movable vise which is installed on the other side of the fixed vise and which moves in the width direction and which closely presses the round bar forwardly disposed together with the fixed vise, From the front end portion of the shaft member provided at the front end portion of the barrel while maintaining an angle of 45 degrees toward the center in the width direction of the front end portion of the round bar,

While the movable vice is moved to one side in the widthwise direction, the movable vise is lowered. When the movable vise is moved to the other side in the width direction, the movable vise can be moved upward.

The cutting unit may further comprise an adjusting member for finely adjusting an elevating distance of the elevating plate.

The cutting portion is installed on a fourth rail member provided at one side in the width direction of the front end portion of the table and circularly formed with a plurality of saw blades along the circumference, and can be rotated in the gravity direction and downward while rotating to cut the round bar.

The control unit may further include a control unit connected to the fixing unit, the cutting unit, and the cut unit, the control unit being programmed to locally or integrally control the operation of the fixing unit, the cut unit, and the cut unit.

According to the above-described structure of the present invention, the annular ring structure is manufactured by cutting the round bar having the annular groove having the width and length already set through the cutting portion, so that the surplus portion cut from the round bar by the formation of the annular groove The present invention can be utilized as other round rods having a small diameter, thereby minimizing the generation of cutting tips discarded in the manufacturing process of the annular ring structure, thereby reducing the waste of the material and improving the manufacturing efficiency in terms of economy.

And, by having the control portion connected to the fixed portion, the cut portion and the cut portion and programmed to locally or integrally control the operation thereof, it is possible to adjust the dimension including the predetermined diameter, thickness or length of the annular ring structure, It is possible to automate the operation of operating the cutting part and the cut part, and it is possible to reduce the manpower due to the convenience of manufacturing the annular ring structure.

1 and 2 are perspective views schematically showing a round bar machining apparatus according to the present invention.
3 and 4 are cross-sectional views schematically showing a round bar machining apparatus according to the present invention.
5 and 6 are a perspective view and a cross-sectional view schematically showing a second vice member of the round bar machining apparatus according to the present invention.
Figs. 7 to 9 are cross-sectional views schematically showing cutting portions of a round-bar machining apparatus according to the present invention.
10 is a cross-sectional view schematically showing the interlocking operation of the movable vise and the lifting plate of the round bar machining apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The detailed description of the technical structures in the same or similar categories will be omitted. .

Before describing the present invention, the front side refers to the direction in which the round bar is cut or the direction in which the round bar is located with respect to the center in the longitudinal direction of the table, and the rear side refers to the opposite direction to the front side or the front side Will be described below.

The one side and the other side will be described based on the use state in which the fixed vise is provided on one side of the table with respect to the center of the table in the width direction and the movable vise is provided on the other side of the table.

The expression on the inner side refers to a part in the inner direction or in the direction compartmented by each constitution or each constitution and the expression on the outer side refers to a part opposite to or in the direction of the inner expression I will explain.

The present invention relates to a round bar machining apparatus capable of automating the production of such an annular ring structure while improving the production efficiency in terms of economy as well as suppressing the waste of the material in the process of manufacturing the annular ring structure by processing the round bar .

1 to 10, the structure of the present invention includes a fixing part 100 provided on a table 10, a cutting part 200 provided at a front end of the table 10, (300).

Further, as shown in Figs. 1 to 4, the table 10 is the same as or similar to the installation of machine tools for machining a substrate in a typical lathe, and a more detailed description of the shape, function, It will be omitted.

However, the table 10 in the present invention is not limited to a table (not shown) having a front end portion extending forwardly, another table having a low height continuing at the front end portion, or extending in front of the table 10 Thereby preventing the annular ring structure as well as the structures constituting the round bar machining apparatus from being damaged or broken.

1 to 5, the table 10 is provided with a first rail member 11 disposed along the longitudinal direction on the rear side of the cut portion 300 to be described later, and a second rail member 11 is provided on the first rail member 11, It is possible to allow the second vice member 120 to move forward or backward on the table 10 by allowing the vise member 120 to be installed and the fourth rail member 12 on one side in the widthwise direction of the front end, As the cutouts 300 are provided on the fourth rail member 12, the cutouts 300 are rotated to move upward or downward in the gravity direction so that the round bar B can be cut.

1 to 5 and 10, the fixing part 100 of the present invention is provided on the table 10 and is fixed in a state in which the round bar B is disposed in the longitudinal direction so as to be cut will be.

The fixing unit 100 includes a first vise 100 which is provided at the front end of the table 10 at the rear of the cutter 300 to be described later and fixes the outer circumference of the round bar B, And a second bead member 120 installed at the rear of the first bead member 110 to catch the outer circumference of the round bar B and move it forward by a predetermined length.

The first vise member 110 includes a fixed vise 111 fixed on one side in the width direction of the table 10 and a second fixed vise 111 mounted on the other side of the fixed vise 111, And a movable vise 112 for tightly pressing the round bar B arranged in a forward direction together with the movable vise 111.

10A, the movable vise 112 moving in the width direction on the table 10 includes a rack R provided inside the table 10 and a gear R of a pinion P connected to a separate power source, 10B, a conventional ball screw S connected to a separate power source M or a rotating body O connected to the power source M may be used to move the movable vise 112 So that it is possible to make the movement in the width direction possible.

When the movable barb 112 is positioned on the other side in the widthwise direction of the front end of the table 10 and the round bar B is advanced to a position suitable for the predetermined length by the operation of the second bevelling member 120 , And moves to one side in the width direction and fixes the outer circumference of the round bar (B) together with the stationary vise (111).

When cutting of the round bar B through the cut portion 300 to be described later is completed, the front bar is moved to the other side in the widthwise direction of the front end of the table 10 to maintain the state of waiting for forward placement of the round bar B, The movement of the movable vise 112 may be performed in conjunction with the lifting and lowering of the lifting plate 203 of the cutting unit 200.

The pair of feeder vias 121 are formed of a pair of feeder vias 121 arranged to be movable in the width direction on the table 10, And may be disposed so as to face each other.

The second vise member 120 is mounted on the first rail member 11 disposed along the longitudinal direction on the table 10 and can be moved forward or backward as described above, It is possible to implement the forward arrangement of the continuous round bar B in the course of work.

5, a pair of feeder vice 121 moving in the width direction on the table 10 are connected to a rack R installed to face the pair of feeder vias 121 so as to face each other in the gravity direction, , And the pinion P connected to the power source (M).

The second weft member 120 is configured such that the cutting of the round bar B is completed in a state in which the pair of feeder vias 121 are spread at intervals exceeding the diameter of the round bar B in the width direction The pair of feeder vias 121 move in the width direction and the outer circumferential edge of the round bar B is tightly pressed To form a catch.

The pair of feeder vias 121 are advanced in the longitudinal direction along the first rail member 11 with the outer circumference of the round bar B held, And at the same time as the first weft member 110 holds the round bar B whose forward positioning has been completed and the pair of feeder vias 121 again spread in the width direction at an interval exceeding the diameter of the round bar B The first rail member 11 is retracted in the longitudinal direction to maintain the state of waiting for the cutting of the round bar B.

It goes without saying that the movement of the second bead member 120 may be performed in conjunction with the movement of the first bead member 110 described above.

The second bead member 120 is provided with a pair of feeder vias 121 connected to each other and connected to the rack R in accordance with gear engagement of the rack R and the pinion P above or below the gravity direction, And a support member 122 for supporting the rack R may be further provided.

6A, the second bead member 120 is formed so that the pair of feeder vias 121 are connected to separate power sources in a state in which the above-described gear R and pinion P are not meshed, Direction screw (D) rotated by the rotation of the rotating body (O) provided thereon, for example, through a rotator (O) provided at the center in the width direction, and a right screw is provided on one side in the width direction, Directional screw D constituting the above-described width direction movement.

6B, the second weft member 120 is moved in the width direction by connecting the pair of feeder vias 121 together with the bidirectional screw D having the rotating body O, It is needless to say that it is also possible to adopt a configuration employing a conventional ball screw S connected to the power source M or the rotating body O provided to connect with the power source M.

1 to 4 and 7 to 10, the cutting portion 200 of the present invention includes a round bar B fixed to the front end of the table 10 at the front end of the table 10, An annular groove H having a width and a length already set at the inner end of the round bar B is provided with a bite 220 at the rear end corresponding to the round bar B, And the other round bar of the surplus portion, which is the cutting tip formed on the round bar B, is provided by forming the annular groove H by piercing.

As a result, the annular ring structure is manufactured by cutting the round bar B formed with the annular groove H having the predetermined width and length, so that the annular ring H is formed by cutting the round bar B by the formation of the annular groove H The surplus portion can be utilized as another round bar having a small diameter, so that generation of a cutting tip that is discarded in the process of manufacturing an annular ring structure is minimized, waste of the material is suppressed, and production efficiency in terms of economy can be improved.

The cutting part 200 includes a body 210 having an annular short tube shape and moving backward to the round bar B by a predetermined length while receiving the rotational power from the power source M, A bite 220 protruding rearward from the bore 220 and cutting the inside of the front end of the round bar B by rotation of the body 210 to dig an annular groove H and a body 220 adjacent to the bite 220, And a discharge groove 230 formed along the outer circumferential length direction of the bobbin 220 and facilitating discharge of the cutting tip except the other round bar which is an excess portion of the round bar B generated by the bite 220. [ have.

That is, when the body 210 rotates toward the round bar B and retreats, the bite 220 cuts the inner end of the round bar B into an annular shape. At this time, the diameter of the round bar B is smaller than that of the round bar B Another round bar is produced, and at the same time, when the cut round bar B is cut, an annular ring structure is manufactured.

In this case, the bite 220 may have a shape that is inclined toward the round bar B and protruded point-wise to be wedged at the inner end of the round bar B, Three or more intervals may be provided.

As shown in FIGS. 7 and 8, the selected one 221 of the bytes 221, 222, and 223 is protruded rearward beyond the remaining bytes 222 and 223, And the remaining bosses 222 and 223 may protrude inward or outward in the width direction of the thickness formed by the outer periphery and the inner periphery of the body 210 .

As a result, the longest protruding bite 221 located at the central portion in the width direction of the thickness formed by the outer periphery and the inner periphery of the body 210 is first inserted into the inner end of the round bar B, The bite 221 protruding the longest bite 222 or 223 protruding inward or outward in the width direction of the thickness formed by the outer periphery and the inner periphery of the body 210 has a width in the width direction (B) cutting can be ensured with high precision by cutting the outer side and the inner side with the center, so that it is possible to manufacture an annular ring structure having a predetermined dimension, and a round bar B or the bite 220 can be prevented from being damaged or cracked, and it is possible to increase the cutting efficiency by dispersing the overload which may be caught by one byte.

The cutting portion 200 includes a shaft member 201 provided with a second rail member 202 that is rotatable at the front end of the table 10 and is movable forward and backward, A lifting plate 203 installed on the second rail member 202 and lifted and lowered and provided with a third rail member 204 and a second lifting plate 203 provided on the third rail member 204 so as to be movable forward and backward, A housing 206 having a cutting oil supply line 205 arranged in such a manner that a power transmitting member such as a bevel gear is connected to the power source M to transmit rotational power to the body 210 and cross the inside from the front end, And a mount member 207 interposed between the body 210 and the housing 206.

The body 210 may be coupled with the housing 206 or the mount member 207 through a bolt fastening to a plurality of fastening holes 213 formed in the front end portion of the body 210 Can be made detachable and can be replaced with bodies having various diameters and lengths, so that the annular ring structure can be manufactured to have various thicknesses and lengths.

The body 210 has at least one cutting oil supply hole 211 arranged in the longitudinal direction between the inner peripheral edge and the outer peripheral edge from the front end to the rear end so that the cutting oil supply hole 211 is communicated with the above- The cutting fluid can be supplied during the cutting process of the round bar B through the bite 220 by connecting the connection member 212 provided at the front end portion to the connection member 212. [

The cutting portion 200 can be rotated forward of the table 10 through the rotation of the shaft member 201. This is because when the annular ring structure is completed and the movable vise 112 described above is moved in the width direction It is assumed that the body 210 or the bite 220 can be raised to a position where the body 210 or the bite 220 interferes with the drawing of the manufactured annular ring structure as the lifting plate 203, which will be described later, The body 210 or the bite 220 can be prevented from being damaged or damaged by making it possible to rotate the ring 10 from the front side of the table 10 to one side or the other side in the width direction, To be able to do.

In this case, the shaft member 201 is provided with a separate stopper (not shown) so that the cutting unit 200 can be rotated only to the predetermined position Or to prevent excessive rotation of the cutting portion 200. [0051] As shown in FIG.

In addition, the cutting portion 200 is configured such that the lifting plate 203 having the housing 206 connected to the third rail member 204 is lifted and lowered along the second rail member 202 to lift and lower the body 210 (B) in accordance with a change in diameter of the circular bar (B) to be cut, so as to be positioned at a position corresponding to the coaxial line in front of the center of the round bar (B) .

의 비율을 유지하면서 상호 연동하는 승강을 이루게 되는 것이고, 이때 가동바이스(112)가 폭 방향 일측으로 이동하면 하강하며, 가동바이스(112)가 폭 방향 타측으로 이동하면 상승할 수 있다.That is, the lifting plate 203 extends from the front end portion of the shaft member 201 provided on one side in the width direction of the front end of the table 10 toward the position coaxial with the center in the width direction of the front end portion of the round bar B, And the moving distance of the movable vise 112

The movable vise 112 is lowered when the movable vise 112 moves to one side in the width direction and can be raised when the movable vise 112 moves to the other side in the width direction.

The reason why the lifting plate 203 is lifted and lowered at an angle of 45 degrees is that the cutting section 300 moves to the lower side in the direction coinciding with the gravity direction and cuts the round bar B, So that it can be moved to a position corresponding to the center of the round bar B by moving while maintaining the inclination at an angle of 45 DEG toward the center of the round bar with reference to an imaginary line perpendicular to the gravity direction.

의 비율을 유지하는 것이 불가피한 것이고, 이는 환봉(B)의 직경 변화에 대응한 가동바이스(112)의 이동과 승강플레이트(203) 승강의 정밀도를 더욱 향상시키기 위함이다.At this time, the moving distance of the movable vise 112 moving in the width direction perpendicular to the gravity direction and the moving distance of the lifting plate 203,

This is to further improve the movement of the movable vise 112 corresponding to the diameter change of the round bar B and the accuracy of the lifting and lowering of the lifting plate 203.

If the center of the body 210 due to the lifting and lowering of the lifting plate 203 is not disposed at a position coaxial to the center of the round bar B, The moving distance of the lifting plate 203 can be finely adjusted so that the movement of the movable vise 112 and the precision of the lifting and lowering of the lifting plate 203 are further strengthened Thus, reliability of the manufacturing process of the annular ring structure can be ensured.

For example, the lifting and lowering of the lifting plate 203 can be performed by raising and lowering the rack R provided on the inner side of the table 10 or the second rail member 202 and the gears of the pinion P connected to a separate power source, Can be moved by engagement.

As described above, the lifting and lowering of the lifting plate 203 can be interlocked with the lateral movement of the movable vise 112. For example, the lifting plate 203 is provided with a relay gear connected to a separate power source to move the movable vise 112 The pinion P and the pinion P for lifting and lowering the lifting plate 203 are engaged with each other at the same time so that they can be moved and lifted according to the interlocking operation.

The lifting and lowering of the lifting plate 203 can be achieved by disposing a separate power source M or a plurality of power sources M connected to the lifting plate 203 in a state in which the gear R of the rack R and the pinion P are excluded, It is also possible to adopt a configuration in which a conventional ball screw S connected to the entire body O is employed and connected to the lifting plate 203. In this case, The screw S and the ball screw S connected to the lifting plate 203 are interlocked or one ball screw S is connected to the movable vise 112 and the lifting plate 203 at the same time, The movement of the vise 112 and the lifting and lowering of the lifting plate 203 can be interlocked.

When the diameter of the round bar B, that is, the diameter of the round bar B to be processed, is large, the movable vise 112 and the lifting plate 203 are moved in the width direction The movable lifting plate 203 moves up to the other side and the movable vise 112 moves to one side in the width direction when the diameter of the round bar B to be worked is small and the lifting plate 203 descends will be.

The body 210 is connected to the housing 206 through the third rail member 204 so as to be movable forward or backward by the lifting plate 203. In addition, By implementing the rearward movement, it is possible to manufacture an annular ring structure having various lengths by adjusting the formation length of the annular groove H in the round bar (B).

That is, when the length of the annular ring structure to be manufactured is long through the rotation of the body 210 having the limited length and the route and the backward movement toward the round bar B, the housing 206 is moved along the third rail member 204, The annular groove H corresponding to the length of the annular ring structure that has been previously set can be obtained by moving the housing 206 forward and arranging the body 210 in the forward direction when the annular ring structure is short, Can be performed.

The length of the annular groove H formed in the round bar B through the cut portion 200 may be equal to or greater than the sum of the length of the annular ring structure and the thickness of the cut portion 300, .

The reason for enabling the forward and backward movement of the body 210 in this manner is that the shaft member 201 described above is mounted on the table 10 in a state in which the front and rear movements of the housing 206 via the third rail member 204 are eliminated, Or may be inserted into the front end of the table 10 as shown in FIG.

1 to 4, the cut portion 300 of the present invention cuts the front end portion of the round bar B formed with the annular groove H into a preset length, and a plurality of saw blades 310 Is formed on the fourth rail member 12 provided on one side of the front end of the table 10 in the widthwise direction of the table 10 and connected to the power source M and moves in the upward and downward directions of gravity while rotating, Which is the same as or similar to a circular saw which is a conventional machine tool for cutting a workpiece B, and a detailed description thereof will be omitted.

The cut portion 300 may be replaced by various types of cutters, such as a conventional band saw, as well as the shape of the circular saw described above.

The round bar machining apparatus according to the present invention having such a configuration is provided with the fixing portion 100, the cutting portion 200, and the cut portion 300 connected to the fixing portion 100, the cutting portion 200, and the cut portion 300, And a control section that is programmed to locally or integrally control the operation of the microcomputer.

That is, the movement of the movable vise 112 and the second bead member 120, the rotation of the shaft member 201, the lifting and lowering of the lifting plate 203, the movement of the housing 206 or the movement of the cut- The control unit controls the detailed operation of each of the constituent components including the fixing unit 100 and the cutter unit 200 so as to adjust the dimensions including the predetermined diameter, So that it is possible to reduce manpower due to the convenience of manufacturing the annular ring structure.

The present invention is not limited to the above-described embodiments. Anything having substantially the same constitution as the technical idea described in the claims of the present invention and achieving the same operational effect is included in the technical scope of the present invention.

10: Table 11: First rail member
12: fourth rail member 100:
110: first vise member 111: fixed vise
112: movable vise 120: second vise member
121: feeder vise 122: support member
200: cutting section 201: shaft member
202: second rail member 203: lifting plate
204: third rail member 205: cutting oil supply line
206: housing 207: mount member
208: adjusting member 210: body
211: Coolant supply hole 212: Connecting member
213: fastening hole 220: bite 221, 222, 223,
230: discharge groove 300:
310: saw blade B: round bar
D: Bi-directional screw H: Home
M: power source O: rotating body
P: Pinion R: Rack
S: Ball Screw

Claims (13)

A fixing part (100) for fixing the round bar (B);
The bobbin 220 provided at the end portion corresponding to the round bar B is rotated so as to rotate in the longitudinal direction corresponding to one longitudinal surface of the fixed round bar B, A cutting part 200 for cutting the groove H; And
And a cut portion (300) for cutting the front end of the round bar (B) formed with the annular groove (H) to a predetermined length. The method according to claim 1,
The fixing part (100)
A first vise member 110 for tightly pressing and fixing the outer circumference of the round bar B disposed at the front end of the table 10 on the rear side of the cutting portion 300; And
And a second bead member (120) installed at the rear of the first bead member (110) to hold the outer periphery of the round bar (B) and to move forward by a predetermined length. 3. The method of claim 2,
The first bead member (110)
A fixed vise 111 provided at one side in the width direction of the table 10; And
And a movable vise 112 installed on the other side of the fixed vise 111 and moving in the width direction to closely contact and press the round bar B arranged forward with the fixed vise 111. [ . 3. The method of claim 2,
The second bead member 120 is composed of a pair of feeder vias 121 provided so as to be movable in the width direction on the table 10,
Wherein the pair of feeder vias (121) have a shape corresponding to the outer periphery of the round bar (B) and are disposed to face each other. 3. The method of claim 2,
Wherein the second weir member (120) is installed on a first rail member (11) arranged along the longitudinal direction on the table (10) and is movable forward and backward. The method according to claim 1,
The cutting portion 200 may be formed by cutting,
A body 210 having an annular short tube shape and receiving a rotational power from the power source M and rotating backward by a preset length;
A bite 220 protruding rearward from the rear end of the body 210 to cut the inside of the front end of the round bar B to dig an annular groove H; And
And a discharge groove 230 formed along the outer peripheral length direction of the body 210 adjacent to the bite 220 to allow the cutting tip to be discharged by cutting the bite 220 . The method according to claim 6,
The bobbins 220 are disposed at equal intervals along the rear end of the body 210,
One of the selected one of the bytes 221, 222 and 223 is protruded rearward from the remaining bytes 222 and 223 and at the same time a width direction of the thickness between the outer circumference and the inner circumference of the body 210 And the remaining bosses (222, 223) protrude inward or outward in the width direction of the thickness between the outer periphery and the inner periphery of the body (210). The method according to claim 6,
The cutting portion 200 may be formed by cutting,
A shaft member (201) provided on the front end of the table (10) so as to be rotatable and movable forward and rearward, and having a second rail member (202);
A lifting plate 203 mounted on the second rail member 202 and lifted and lowered and having a third rail member 204;
The power transmission member provided inside the first and second rail members 204 and 204 is connected to the power source M to transmit rotational power to the body 210, A housing (206) having a cutting oil supply line (205) forming an arrangement across the inside from the portion; And
And a mount member (207) interposed between the body (210) and the housing (206). 9. The method of claim 8,
The body 210 may include at least one cutting oil supply hole 211 formed in the longitudinal direction between the inner peripheral edge and the outer peripheral edge from the front end to the rear end of the body 210 so as to be connected to the cutting oil supply line 205, So as to communicate with the connecting member (212). 9. The method of claim 8,
The fixing part 100 includes a first bead member 110 for tightly pressing and fixing the outer circumference of the round bar B disposed at the front end of the table 10 on the rear side of the cutting part 300 and,
The first vise member 110 includes a fixed vise 111 provided at one side in the width direction of the table 10 and a fixed vise 111 provided at the other side of the fixed vise 111, And a movable vise (112) for closely pressing the round bar (B)
The lifting plate 203 maintains an angle of 45 degrees from the front end of the shaft member 201 provided on one side in the widthwise direction of the front end of the table 10 toward the center in the widthwise direction of the front end of the round bar B And the moving distance of the movable vise 112

Wherein the movable vise (112) is lowered when it is moved to one side in the width direction, and is raised when the movable vise (112) is moved to the other side in the width direction. Device. 11. The method of claim 10,
Wherein the cutting unit (200) further comprises an adjusting member (208) for finely adjusting an elevating distance of the lifting plate (203). The method according to claim 1,
The cut portion 300 is installed on a fourth rail member 12 provided at one side in the width direction of the front end portion of the table 10 in the form of a circle formed with a plurality of saw blades 310 along the circumference, So as to cut the round bar (B). 13. The method according to any one of claims 1 to 12,
A control section which is connected to the fixing section 100, the cutting section 200 and the cutout section 300 and is programmed to locally or integrally control the operation of the fixing section 100, the cutting section 200 and the cutout section 300 Further comprising:

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