KR101758784B1 - Plastic deforming device and method using the repeated torsion - Google Patents

Abstract

The present invention relates to a firing part composed of at least one fired body and continuously arranged at regular intervals in the longitudinal direction of the metal material and performing twisting processing of the material; A motor for rotating the firing unit in an axial direction, and a power transmitting unit for connecting the firing unit and the motor to each other; A traction part for recovering the continuous supply of the material and the processed material; And a control unit for controlling the driving unit and the pulling unit, wherein the sintering body includes: a hollow hydraulic cylinder; a hollow chuck for pressing the material through the hydraulic cylinder or releasing the pressing through the hydraulic cylinder; And a driving unit installed between the hydraulic cylinder and the hollow chuck to rotate the hollow chuck in the axial direction.
The present invention can be expected to increase the workability of the workpiece by continuously arranging the workpieces in the longitudinal direction at regular intervals and twisting the workpieces in the forward and backward directions at regular intervals to ultrafine the grain.

Description

Technical Field [0001] The present invention relates to a plastic deformation device and a plastic deformation method using repeated twisting,

The present invention relates to a plastic deformation device for cutting a metal material, and more particularly, to a plastic deformation device for cutting a metal material by continuously arranging the materials at regular intervals in the lengthwise direction of the workpiece and twisting the material in forward and reverse directions at regular intervals, And to a plastic deformation apparatus and a plastic deformation method using repetitive twisting which can improve workability.

In the case of metal materials, the casting structure of the material is destroyed by using the rolling process during the post-casting process, and the strength and conductivity are ensured through the annealing process. However, since the dense casting structure is difficult to process, the rolling process for destroying the casting structure must be repeatedly performed to facilitate the processing.

In order to destroy the casting structure, the rolling process must be repeatedly performed. However, since the size of the material is reduced in this process, the manufacturing cost is increased due to the need of procuring the quantitative scale of the material in consideration of the large material. However, the casting structure remains, which results in weakness in strength, toughness, and electrical conductivity.

In addition, in order to repeatedly perform the rolling process, rolling rollers of a sufficient size must be arranged in parallel in a continuous state, thereby increasing the size of the equipment and causing a costly spatial burden.

On the other hand, the Equal Channel Angular Pressing (ECAP) process has been proposed as a method that can cause large deformation without reducing the diameter of the metal material. However, it is impossible to carry out the continuous operation which is the limit of the compression process, ECAP Conforming process, which is a method of applying shear deformation to the material by passing through a channel with 90 ° and 140 ° bends after sucking the material using a rotating roll, was proposed.

However, the above process is problematic due to asymmetric deformation (the upper and lower strain rates of the final material are distributed differently and are not homogeneous), peeling of the material surface, and warping of the material.

In addition, the drawing process is applied, and a drawing die is connected in series, and the position of the outlet of each step is not placed on the same line, and the process of folding the material between the exit of each step and the entrance of the next step, Drawing also has the problem of reducing the diameter of the workpiece, warping of the workpiece, and non-uniform wear of the exit of the die, thereby shortening the life of the die.

Therefore, it is necessary to provide a technical solution that can perform continuous plastic working without decreasing the diameter, can impart uniform deformation to the center axis symmetry, and is economical for the process.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a semiconductor device by continuously arranging a material at regular intervals in the longitudinal direction and twisting the material in forward and reverse directions at regular intervals, And a plastic deformation apparatus and a plastic deformation method using repetitive twisting which can increase the workability of the plastic deformation apparatus.

Another object of the present invention is to reduce the number of repetitive rolling processes and thus to prevent the reduction of the diameter of the material by a continuous rolling process, Apparatus and method of plastic deformation.

Still another object of the present invention is to provide a plastic deformation apparatus and a plastic deformation method using repetitive twisting which can reduce the rolling facility and improve the productivity of a metal material because the rolling process can be reduced and replaced There is.

It is a further object of the present invention to provide a metal material having a total twist angle of 0 degrees through forward and reverse rotation of a metal material so that the metal material to be finally drawn is similar to a metal material without apparent twist, And to provide a plastic deformation apparatus and a plastic deformation method using repetitive twisting which can secure a desired shape.

In order to achieve the above object, the present invention provides a firing unit comprising at least one fired body and continuously arranged at predetermined intervals in a longitudinal direction of a metal material, the firing unit performing twisting processing of a workpiece; A motor for rotating the firing unit in an axial direction, and a power transmitting unit for connecting the firing unit and the motor to each other; A traction part for recovering the continuous supply of the material and the processed material; And a control unit for controlling the driving unit and the pulling unit, wherein the sintering body includes: a hollow hydraulic cylinder; a hollow chuck for pressing the material through the hydraulic cylinder or releasing the pressing through the hydraulic cylinder; And a driving unit installed between the hydraulic cylinder and the hollow chuck to rotate the hollow chuck in the axial direction.

The driving unit includes: a driving gear connected to the motor through the transmitting unit; A hollow connecting flange provided between the driving gear and the hollow hydraulic cylinder; And a hollow socket provided between the connection flange and the hollow chuck.

It is preferable that the transmission means is any one selected from a gear, a belt pulley, and a chain corresponding to the drive gear.

Wherein the connection flange is a hollow tube having a plurality of stages, the tube having a plurality of fastening holes formed radially to engage with the hydraulic cylinder and having a first end; A second end provided between the first end and the hollow and having a plurality of radial fastening holes to be engaged with the driving gear; And an inner part that forms an inner circumference corresponding to one outer circumference of the socket and to which the socket is coupled.

The socket includes a small diameter portion which is formed on one side and is coupled with the inner diameter portion; And a large diameter portion coupled with the hollow chuck.

Wherein the hollow chuck comprises: a hollow main body having one surface joined to the large diameter portion; And a vise provided on the other surface of the main body for pressing the workpiece in accordance with the hydraulic pressure control.

The vice may include a slider installed at a predetermined distance in a radial direction and moving toward the center of the body from an outer periphery in accordance with the hydraulic pressure control of the cylinder; And a pressing roller which is rotatably installed on the slider and presses the material or releases the pressing according to the movement of the slider.

It is preferable that the pressure roller has a supporting portion formed at an outer periphery contacting with the work, and the supporting portion is a curved surface corresponding to the work or a polyhedron.

The firing unit may further include a stand installed through the bearing to maintain the idle state with the rotation unit and to support the ground surface of the firing unit. The stand may include a bearing disposed between the drive gear and the socket .

The fired body may include: a first fired body installed on one side to which a material is supplied; A second fired body provided on the other side from which the material is discharged; And at least one third firing body provided between the first firing body and the second firing body, wherein the firing bodies rotate in a direction opposite to the firing bodies adjacent to each other.

And a stopper for fixing both sides of the material with the firing portion interposed therebetween,

Preferably, the stopper is a vise that restricts movement of an outer periphery of a workpiece, and the vise is operated by gravity or fixed or released by pneumatic or hydraulic pressure, and is controlled by the controller .

The pulling portion is for pulling the leading end of the workpiece so as to continuously supply the workpiece to the firing portion and to recover the workpiece processed in the firing portion and to pull the workpiece by reciprocating movement by a cylinder or a rail, It is preferable to make it pulled.

In addition, the present invention provides a method for manufacturing a semiconductor device, comprising: a first step of supplying a material to the firing portion; A second step of continuously rotating the sintered body of the firing portion in the forward or reverse direction or intermittently rotating by a predetermined rotation pattern so that the torsion processing of the material proceeds; And a third step of recovering the twisted material through the traction unit.

The firing portion, the first firing body provided on one side to which the material is fed, A second fired body provided on the other side from which the material is discharged; And at least one third fired body provided between the first fired body and the second fired body, wherein when the third fired body exists in an odd number, the first fired body and the second fired body, The sintered body rotates in the same direction, and when the rotational speed of the first sintered body and the rotational speed of the second sintered body are equal, the third sintered body rotates at a rotational speed of the first sintered body and the second sintered body It is preferable to rotate by about 2 times.

The firing portion, the first firing body provided on one side to which the material is fed, A second fired body provided on the other side from which the material is discharged; And at least one third fired body provided between the first fired body and the second fired body, when the third fired body is present in an odd number, the first fired body and the second fired body, When the rotation angle of the first fired body is equal to the rotation angle of the second fired body, the rotation angle of the third fired body is the same as the rotation angle of the first fired body and the second fired body, 2 times the rotation angle of the sintering body.

The firing portion, the first firing body provided on one side to which the material is fed, A second fired body provided on the other side from which the material is discharged; And at least one third fired body provided between the first fired body and the second fired body, when the third fired body exists in an even number, the first fired body and the second fired body, It is preferable that the fired bodies rotate in directions opposite to each other, and the second fired bodies and the third fired bodies of the first fired bodies rotate at the same speed with each other.

The firing portion, the first firing body provided on one side to which the material is fed, A second fired body provided on the other side from which the material is discharged; And at least one third fired body provided between the first fired body and the second fired body, when the third fired body exists in an even number, the first fired body and the second fired body, It is preferable that the fired bodies rotate by a predetermined angle in the directions opposite to each other and that the first fired body, the second fired body, and the third fired body rotate by the same angle.

It is preferable that the sum of twist angles of the metal material in the firing portion is 0 DEG.

It is preferable that the metal material is twisted at a twist angle of 0.9 to 3.6 degrees per 1 mm of the length of the material.

According to the embodiments of the present invention as described above, it is possible to expect the effect of increasing the workability of the workpiece by continuously arranging the workpieces at regular intervals in the longitudinal direction thereof, and by twisting the workpieces in the forward and backward directions at regular intervals, have.

Further, the present invention can reduce the repeated rolling process, and therefore, it is possible to prevent the reduction of the diameter of the material by the continuous rolling process, thereby preventing the deterioration of the merchantability of the material.

Further, since the rolling process can be reduced and substituted, the present invention can reduce rolling facilities and improve the productivity of metal materials.

Further, in the present invention, the total sum of the torsional angles is 0 ° in the metal material through forward / reverse rotation so that the metal material to be finally drawn out is made similar to the metal material without apparent twist, The effect can be expected.

1 is a whole view for explaining a plastic deformation apparatus according to a preferred embodiment of the present invention,
2 is a detailed view for explaining an example of a motor according to a preferred embodiment of the present invention,
FIG. 3 is a perspective view illustrating a sintered body according to a preferred embodiment of the present invention,
FIG. 4 is a perspective view illustrating a driving unit according to a preferred embodiment of the present invention.
FIG. 5 is a perspective view illustrating a hollow chuck according to a preferred embodiment of the present invention, FIG.
6 is a front view of a pressurizing roller for explaining an example of a support according to a preferred embodiment of the present invention,
7 is a side view for explaining a traction unit according to a preferred embodiment of the present invention,
8 is a flowchart illustrating a plastic deformation method according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the present invention, the defined terms are defined in consideration of the function of the present invention, and it can be changed according to the intention or custom of the technician working in the field, and the definition is based on the contents throughout this specification It should be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a whole view illustrating a plastic deformation apparatus according to a preferred embodiment of the present invention; FIG.

As shown in the figure, the plastic deformation apparatus 100 is for realizing miniaturization of crystal grains by breaking down a dense casting structure of a metal material produced by a casting method to a certain level, and more specifically, Thereby increasing the workability of the workpiece.

The plastic deformation apparatus 100 includes a firing unit 120 for inducing plastic deformation of the material 230, a power unit 110 for allowing the firing unit 120 to rotate in the axial direction, And a control unit 210 for controlling the power unit 110 and the traction unit 200. The control unit 210 controls the power unit 110 and the traction unit 200,

The power unit 110 includes a motor 111 and a transmission unit 117 that connects the motor 111 and the firing unit 120.

The motor 111 is provided with a plurality of power gears 115 connected to the firing portion 120 through transmission means between the power shafts. At this time, it is preferable that the power gear 115 is any one selected from a gear, a sprocket, and a pulley, and the transmission means 117 is a gear corresponding to the power gear 115, chain, or belt.

The firing portion 120 is a structure for generating plastic deformation of the workpiece 230 by receiving power from the motor 111. The firing portion 120 is composed of a plurality of fired bodies and is disposed at a predetermined interval in the longitudinal direction of the workpiece 230 as shown in FIG.

The fired portion 120 includes a first fired body 121 provided at one side to which the material 230 is supplied, a second fired body 123 and a first fired body 121 provided at the other side from which the material 230 is discharged, And at least one third sintered body 125 provided between the first sintered body 123 and the second sintered body 123.

Each of the fired bodies 121, 123 and 125 is connected to the motor 111 through the transmission means 117 and rotates in the axial direction and is rotated by a single motor 111 or two motors 111 as shown in FIG. It will rotate.

The first fired body 121 and the second fired body 123 are rotated in the same direction as each other. Therefore, the first fired body 121 and the second fired body 123 are rotated in the same direction, Since the third sintered body 125 rotates in the opposite direction to the first and second sintered bodies 121 and 123, the conventional transducer c is interposed between the transmission means 117 as shown in the drawing, So that the plastic deformation apparatus 100 can be driven only by a single motor 111. [

FIG. 2B shows a case where the plastic deformation apparatus 100 is driven by using a pair of motors 111 rotating in the forward direction and the reverse direction.

As described above, the motor 111 can be composed of a single or a pair of motors, and the motor 111 drives the fired bodies 121, 123, and 125 in various rotation patterns to cause plastic deformation of the material 230. Hereinafter, Explain the pattern.

There are various patterns in the rotation pattern depending on the process, and the process is classified into a continuous process and an intermittent process, and the continuous process continues the processing of the material 230 continuously without stopping.

In this continuous process, the interference of the stopper 220 is eliminated, and the continuous rotation of the first to third fired bodies 121, 123, and 125 is continued while the continuous supply and recovery of the material 230 through the draw part 200 is started do.

The rotation patterns of the first to third fired bodies 121, 123 and 125 have various patterns depending on the number of the third fired bodies 125, and these patterns are determined by one rule, So that the total sum of the torsions is 0 °. The strength of the material 230 is improved and the uniformity of processing is ensured, which is the core of the present invention.

Hereinafter, an embodiment of a rotation pattern according to a continuous process will be described. The pattern of rotation is different depending on the number of the third sintered bodies 125, and therefore, the pattern is described about the number of the third sintered bodies 125, and the angle and direction and the number of rotations are expressed Yes, but it should not be limited to this.

[Example 1-1]

The first sintered body 121 rotates in the forward direction and the single third sintered body 125 adjacent thereto rotates in the opposite direction and the second sintered body 123 rotates in the opposite direction, The third sintered body 125 is rotated twice as fast as the first and second sintered bodies 121 and 123 so that the total sum of twist angles applied to the workpiece 230 is 0 °.

In detail, if the material 230 passing through the first fired body 121 is twisted by 180 degrees in the forward direction by rotation, even when the second fired body 123 passes, the material 230 is rotated A torsion of 180 deg. In the normal direction occurs. Therefore, in order to make the total sum of the torsional angles equal to 0 degrees, the third sintered body 125 should rotate at a speed corresponding to twice as much as that of the first sintered body 121 to generate a torsion of 360 degrees in the reverse direction At this time, the rotation of the third fired body 125 is controlled by the control unit 210.

As described above, according to the present embodiment, the rotation speed of the third fired body 125 is increased by about twice as much as that of the third fired body 125, so that the material 230 can be recovered by simply passing the fired portion 120 So that it can proceed continuously without stopping.

For reference, the value of 2 should be determined by taking some errors into consideration. That is, error values that can inevitably occur due to mechanical structural or operational limitations such as 2.01 times, 2.02 times, 2.10 times, 2.11 times, etc., should be interpreted as being within the scope of the present invention. In the case of a rotation angle described later, such an error should be considered, and such error ranges should be interpreted as being within the scope of the present invention. This is the same in the following.

[Example 1-2]

When the number of the third sintered bodies 125 is one or more (for example, two), the first sintered body 121 rotates in the forward direction, one of the third sintered bodies 125 is in the reverse direction, And the second sintered body 123 rotates in the opposite direction, so that the total sum of twist angles applied to the workpiece 230 is 0 °.

Specifically, the material 230 passing through the first fired body 121 is 180 ° in the forward direction, 180 ° in the reverse direction in any one of the third fired bodies 125, 180 ° in the forward direction 180 ° in the third fired body 125, When passing through the second fired body 123, twisting in the opposite direction of 180 degrees is applied, and the total sum of torsion is 0 DEG. Therefore, unlike the first embodiment, the speed of the firing portion 120 is not limited The plastic deformation against the workpiece 230 can be continued without the control of the controller 210 only by using the motor 111 of the same specification (number of revolutions).

As described above, in this embodiment, by applying a rotation pattern in which the number of the third fired bodies 125 is two and the speeds of the fired bodies 121, 123, and 125 are the same, only the material 230 passes the firing unit 120, It is possible to continue the recovery of the deformed material 230 without stopping. In particular, it is possible to reduce the interference of the controller 210, thereby doubling the convenience of the device setup.

[Examples 1-3]

When the number of the third sintering bodies 125 is one or more and the number of the third sintering bodies 125 is an odd number (for example, three), the first sintering body 121 rotates in the forward direction, The other one of the third fired bodies 125 rotates in the forward direction and the other rotates in the reverse direction, and then the second fired body 123 rotates in the forward direction.

At this time, either one of the third fired bodies 125 rotating in the opposite direction and the other one rotate about 1.5 times faster than the fired bodies 121 and 123 rotating in the forward direction, or one of the third fired bodies 123 And the other is turned twice faster than the respective fired bodies 121 and 123 rotating in the forward direction so that the total sum of twist angles applied to the work 230 becomes 0 degrees.

As described above, when the fired portion 120 exists in an odd number, the rotational speed of any one of the third fired body 125 or the third fired body 125 is increased by 1.5 to 2 times, 230). However, when the firing portion 120 is an even number, it is possible to adjust the sum of twist angles even if the same speed is maintained in the forward direction in the reverse direction.

The material 230 formed by the continuous process has a torsion of 0.9 to 3.6 degrees per 1 mm of the length of the material. Therefore, when the interval between the fired bodies 121, 123, and 125 is 100 mm, the material is twisted by 90 to 360 degrees, and 360 ° torsion occurs at one end adjacent to the fired bodies 121, , The machining by the twist is canceled and the metal material to be finally drawn out is made identical to the metal material which is not apparently twisted to thereby eliminate the unevenness of the machining process.

Therefore, the material 230 is subjected to strong plastic deformation due to continuous torsion generated in a forward / reverse direction while passing through the first to third fired bodies 121, 123 and 125 in a straight line, and the crystal grains of the material can be made ultra-fine.

In the intermittent process, an interference is generated by the stopper 2200 and an element for limiting the rotation angle of the firing portion 120 is further added. However, as in the case of the continuous process, the total twist sum of the material is 0 DEG, .

The rotation pattern 1 has a different pattern depending on the number of the third sintered bodies 125, and thus the pattern will be described mainly about the number of the third sintered bodies 125.

The stopper 220 restricts the movement of the workpiece 230 in response to the operation of the drawer 200 or releases the movement of the workpiece 230 so that the drawer 200 can be smoothly operated. Are omitted.

Here, the stopper 220 is a vise that restricts the movement of the outer circumference of the workpiece 230. The vise may be operated by gravity, the workpiece may be fixed or released by pneumatic or hydraulic pressure, As shown in FIG.

[Example 2-1]

The material 230 is rotated 90 degrees in the forward direction and 90 degrees in the reverse direction in the third sintered body 125 as shown in FIG. 180 DEG and 90 DEG in the normal direction in the second fired body 123, and the total sum of the twist angles was 0 DEG.

More specifically, the material is guided to the drawing portion 200, and the first fired body 121, the third fired body 125, and the second fired body 123 are sequentially twisted by rotation.

This material 230 is twisted in the forward direction by 90 degrees in the first fired body 121 by rotation, and this causes twisting in the forward direction of 90 degrees even in the second fired body 123 rotating in the same direction and angle . Accordingly, in order to make the sum of the torsional angles equal to 0 degrees, the third sintered body 125 should rotate at an angle of about twice the first sintered body 121 to generate a torsion of 180 degrees in the reverse direction. At this time, The rotation angle of the third sintering body 125 is preferably controlled by the control unit 210.

As described above, in this embodiment, by applying a rotation pattern of twice the rotation angle of the third fired body 125, the unit of the plastic-deformed material is limited to the area between the fired bodies, So that the recovery can be progressed step by step.

 [Example 2-2]

It is possible to rotate the firing unit 120 bidirectionally while the third firing body 125 is present singly and the material 230 is rotated 90 ° in the forward and reverse directions and the third fired body 125 in the first and second firing bodies 121, And 180 ° in the forward / reverse direction and 90 ° in the forward / reverse direction in the second fired body 123, so that the total sum of the twist angles is 0 °.

Specifically, the first fired body 121, the third fired body 125, and the second fired body 123, which are engaged with the work 230, rotate at the same time to beat the work 230 simultaneously, The first sintered body 121 and the second sintered body 123 are twisted by 90 ° in the forward direction and 90 ° in the reverse direction and the third sintered body 125 is twisted 180 ° in the reverse direction and 180 ° in the forward direction So that the total twist sum of the material becomes 0 DEG, thereby enabling a batch plastic deformation of the material of the area between the stoppers 220. [ At this time, the rotation of the third fired body 125 is controlled by the control unit 210.

As described above, in this embodiment, the rotational direction of each of the sintered bodies 121.123.125 and the third sintered bodies 125 is twice as large as the rotational angle of the sintered bodies 125, The recovery unit is limited to the area between the stoppers 220 so that the recovery of the material 230 can be progressed step by step.

[Example 2-3]

When the number of the third fired bodies 125 is two, the sum of the fired bodies 121, 123, and 125 is an even number, and only the fired bodies 121, 123, and 125 adjacent to each other rotate at the same angle in the direction opposite to each other, Can be set to 0 deg. At this time, the rotation of the firing portion 120 may be a single direction as in the 2-1 embodiment, or both directions as in the 2-2 embodiment.

More specifically, the first fired body 121 is 90 ° in the forward direction, one of the third fired bodies 125 is 90 ° in the reverse direction, the other is 90 ° in the forward direction, and the second fired body 123 The total twist sum of the material becomes 0 DEG, and therefore, unlike the examples 2-1 and 2-2, rotation is further added to the specific firing portion 120, It is possible to perform the plastic deformation against the material without using the control unit 210 only by using the motor 111 of the same specification (the number of revolutions).

As described above, in the present embodiment, by applying a rotation pattern in which the third fired bodies 125 are two and the angles of the fired bodies 121, 123, and 125 are the same, the unit of the plastic- 121, 123, and 125, or restricted to the area between the stoppers 220, so that the recovery of the material 230 can be progressed step by step.

Thus, dense casting structure inside the workpiece 230 can be broken, and a large number of fine grains can be generated in the workpiece, and workability is facilitated. However, when plastic deformation is accompanied by plastic deformation by a torsional process, work hardening occurs, so that the hardness is ensured and therefore the mechanical properties of the final product are not deteriorated.

The sintered body inducing the plastic deformation by causing the twisting of the material as described above will be described with reference to Figs. 3 to 6. Fig.

FIG. 3 is an exploded perspective view for explaining a sintered body according to an embodiment of the present invention, and FIG. 4 is an exploded view for explaining a driving part.

First, the first to third fired bodies 121, 123, and 125 have the same configuration, and therefore, the first fired body 121 will be mainly described, and the omitted configurations will be described together with reference to FIG.

As shown in the drawing, the fired body 121 includes a hollow chuck 150 for pressing or releasing the material 230 through the hollow hydraulic cylinder 140 and the hydraulic cylinder 140, And a driving unit 106 installed between the hydraulic cylinder 140 and the hollow chuck 150 to rotate the hollow chuck 150 in the axial direction.

The sintered body 121 has a center hollow structure so that the material 230 can pass through the center of the sintered body 121. In this case, the hollow is not designated with a separate reference numeral but only hollow.

The hydraulic cylinder 140 has a hollow structure, and a prefabricated product is used, and a description thereof will be omitted.

The driving unit 160 includes a driving gear 161 connected to the motor 111 via the transmitting unit 117, a connecting flange 163 provided between the driving gear 161 and the hydraulic cylinder 140, a connecting flange 163 And a hollow socket (171) installed between the hollow chuck (150).

The connection flange 161 is a hollow tubular member having a plurality of layers and has a first end 165 formed as an outer periphery and coupled to the hydraulic cylinder 140, a first end 165, And a second end portion 167 provided with a plurality of radial fastening holes to be coupled with the socket 171 and an inner portion corresponding to the outer periphery of one side of the socket 171 and to which the socket 171 is coupled.

The first end portion 165 has the shape of a disk corresponding to the outer periphery of the hydraulic cylinder 140 and has a plurality of fastening holes radially formed between the outer periphery and the second end portion 167. At this time, the fastening hole is a hole through which the normal fastening means passes.

The second end 167 forms a monolayer protruding from the first end 165 and is smaller in diameter than the first end 165 as shown and engaged with the drive gear 161 through the fastener.

The interposing part 169 is for fixing one side of the socket 171 to maintain the mutual engagement state and the engagement can be achieved by press fitting or by a set screw or by a power lock, . Here, since the set screw or the power lock is used as a normal auxiliary fastening means, a description and a drawing thereof are omitted.

The driving gear 161 is a driving force that is connected to the motor 111 through the transmission means 117 and rotates in one direction or both directions and is driven by any one of gears, belt pulleys, and chains corresponding to the transmission means 117 . At this time, it is preferable that the transmitting means 117 is any one of a gear, a chain and a belt.

The socket 171 includes a small diameter portion 173 formed on one side and coupled to the inner diameter portion and a large diameter portion 175 coupled with the hollow chuck 150.

The small diameter portion 173 is a tube having a diameter corresponding to the interpolation portion 169 and has a length corresponding to the predetermined length, that is, the width of the stand 180, so that the stand 180 between both ends is installed.

The large diameter portion 175 has a diameter corresponding to the outer periphery of the hollow chuck 150, and a plurality of fastening holes are radially formed between the outer periphery and the hollow.

The stand 180 is provided to support the ground surface of the firing portion 120. The stand 180 is supported by bearings 183 between both ends of the small diameter portion 173 of the socket 171, As shown in FIG. At this time, the bearing 183 is installed through a seating groove 181 provided in the stand 180.

The driving unit 160 is further provided with a hollow tube 190 passing through the hollows of the connecting flange 163, the driving gear 161 and the socket 171. The hollow tube 190 is connected to each component So that smooth movement of the workpiece 230 is possible by excluding a step generated in the section.

FIG. 5 is a perspective view illustrating a hollow chuck according to a preferred embodiment of the present invention, and FIG. 6 is a front view of a pressure roller for explaining an example of a support.

And a vise 153 installed on the other surface of the main body 151 for pressing the workpiece 230 under the control of the hydraulic pressure.

The vise 153 includes a slider 155 installed radially at regular intervals and a pressure roller 157 rotatably installed on the slider 155.

The slider 155 moves from the outer periphery to the center of the main body 151 through the hydraulic pressure control of the hydraulic cylinder 140 or to the outer periphery from the center of the main body 151 and presses the workpiece 230 by the pressure roller 157 Or to release the compression.

The pressing roller 157 is rotatably installed on the slider 155 via the pin p and a supporting portion 159 is formed on one surface of the material 230 to be pressed.

The support portion 158 is provided to smoothly pressurize the workpiece 230 and is preferably a curved surface corresponding to the workpiece 230 or one or more polyhedrons as shown in FIG.

6A, the supporting portion 159 of the polyhedron may form the three-sided body as shown in FIG. 6B or the four-sided body as shown in FIG. 6C.

After plastic deformation of the material 230, the material is supplied and recovered by the drawing unit 200 as shown in FIG.

7B, the pulling unit 200 may be configured to pull the tip of the workpiece 230 while reciprocating the cylinder or the rail as shown in FIG. 7A, or to wind the end of the workpiece 230 on one side And the pulling portion is rotated in the axial direction so that the material can be forcedly pulled.

As described above, according to the present invention, by applying a strong shear-plastic deformation to the surface and the deep portion of a metal material, the crystal grains of the surface and the deep portion are miniaturized, thereby not only improving the strength of the material but also improving the workability, It is possible to prevent the problem that the diameter of the workpiece is excessively reduced and further reduce the rolling process, thereby improving the productivity and reducing the equipment.

In the plastic deformation apparatus of the present invention, as shown in FIG. 8, the plastic deformation and the recovery of the material can be performed by the plastic deformation method. Referring to FIG. 8, .

8 is a flowchart illustrating a plastic deformation method according to an embodiment of the present invention.

As shown in the figure, a first step of supplying a material to a firing portion, a second step of continuously rotating the fired body of the firing portion in a forward or reverse direction, or intermittently rotating by a predetermined rotation pattern, And a third step of recovering the twisted workpiece from the towing portion.

The first step is to extend the extruded metal material to be continuously fed to the plastic body or to transport the extruded material directly to the plastic body.

The second step is to apply various rotation patterns to the firing portion so that the twisting of the material proceeds.

The rotation pattern includes various patterns depending on the rotation direction, speed and angle of the firing portion, and will be described in detail below.

When the first sintered body and the second sintered body are rotated in the same direction and at the same speed of the first sintered body and the second sintered body, if the at least one third sintered body exists in an odd number in the continuous process, And a pattern in which the third sintered body rotates at a speed about twice that of the third sintered body is applied.

If there is at least one third sintered body in the continuous process, the first sintered body and the second sintered body rotate in directions opposite to each other, and if the second sintered body and the second sintered body rotate in opposite directions, Adults rotate in the same pattern.

If at least one third sintered body is present in the intermittent process but exists in an odd number, the first sintered body and the second sintered body rotate in the same direction and a predetermined angle, and the angle of the first sintered body and the angle of the second sintered body When it is the same, the third sintered body is applied with a pattern that rotates twice as much as the second sintered body.

When at least one third sintered body is present in the intermittent step and an even number of sintered bodies exist, the first sintered body and the second sintered body rotate in a direction opposite to each other by a predetermined angle, and the second sintered body and the second sintered body The third sintered body is applied with a pattern that rotates by the same angle with each other.

As described above, the sintered body can cause plastic deformation of the material by various rotation patterns.

The third step is to recover the plastic-deformed material, which is to continuously or intermittently recover the material while reciprocating or rotating the drawing part.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: plastic deformation device 110:
111: Motor 113: Power shaft
115: power gear 117: transmission means
120: firing portion 121: first fired body
123: second sintered body 125: third sintered body
140: Hydraulic cylinder 150: Hollow chuck
151: main body 153: vise
155: Slider 157: Pressure roller
159: Support part 160:
161: driving gear 163: connecting flange
165: first end 167: second end
169: Interpolation part 171: Socket
173: Small diameter neck 175: Large diameter neck
180: stand 181: seat groove
183: Bearing 190: Hollow pipe
200: pulling unit 210:
220: Stopper 230: Material

Claims (3)

At least one hollow cylinder including a hollow hydraulic cylinder, a hollow chuck for pressing or releasing the pressurized material through the hydraulic cylinder, and a driving unit installed between the hydraulic cylinder and the hollow chuck to rotate the hollow chuck in the axial direction A firing part composed of a fired body and continuously arranged at regular intervals in the longitudinal direction of the metal material and performing twisting processing of the material;
A motor connected to the driving unit and including a motor for rotating the firing unit in an axial direction and a transmission unit for connecting the firing unit and the motor;
A traction part for recovering the continuous supply of the material and the processed material;
A control unit for controlling the power unit and the tow unit; And
And a stopper for fixing both sides of the material with the firing portion interposed therebetween,
Wherein the stopper is a vise that restricts movement of the outer periphery of the workpiece and the vise is operated by a gravity force or fixed or released by pneumatic or hydraulic pressure and is controlled by the control section A plastic deformation device using repetitive twisting. The method according to claim 1,
The sintered body may be,
A first fired body installed on one side to which a material is supplied;
A second fired body provided on the other side from which the material is discharged; And
And at least one third fired body disposed between the first fired body and the second fired body,
Wherein the plastic bodies are rotated in a direction opposite to the fired bodies adjacent to each other. A plastic deformation apparatus according to any one of claims 1 to 3,
A first step of supplying a material to the firing portion;
A second step of continuously rotating the sintered body of the firing portion in the forward or reverse direction or intermittently rotating by a predetermined rotation pattern so that the torsion processing of the material proceeds; And
And a third step of recovering the twisted material through the traction unit. The plastic deformation method using repetitive twist.

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