KR101500221B1 - Apparatus for manufacturing slot of casting roll and Method for the same - Google Patents

Abstract

According to an embodiment of the present invention, an apparatus for working a slot of a casting roll comprises: a measurement unit imaging a rotating casting roll to generate an image information; an image processing unit processing the image information to analyze an actual rotational amount of the casting roll; a control unit generating a rotational signal in accordance to a reference rotational amount as an angle on which the casting roll is intended to be rotated; comparing the actual rotational amount with the reference rotational amount, calculating a correction value to correct a preset slot machining origin, and generating a work signal in accordance to the correction value; a working unit correcting the slot machining origin in response to the work signal, and working the slot to the corrected slot machining origin; and a roll rotating unit rotating the casting roll by the reference rotational amount in response to the rotational signal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slot forming apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for slotting a casting roll, and more particularly, to a slotting apparatus and method for casting a casting roll to form a slot in a side surface of a casting roll used in a thin plate manufacturing process.

Generally, a twin roll laminate casting machine is provided with an edge dam to prevent molten metal contained between two cylindrical casting rolls from escaping to the side of the casting roll. The edge dam is brought into close contact with both sides of the casting roll by a constant back pressure.

The twin roll type thin plate casting machine rotates the pair of casting rolls in a direction to be engaged with each other to draw molten steel contained in the molten steel pool formed between the casting roll and the edge dam into a nip portion formed between the casting rolls, Are continuously cast. In this case, on the side of the casting roll and the contact surface of the edge dam, the wear of the edge dam, which is a refractory, is inevitably generated due to the rotation of the casting roll and the vibration of the edge dam. If such abrasion powder can not be discharged smoothly, the performance of the edge dam is deteriorated and the durability of the casting roll is deteriorated.

Therefore, in order to uniformly and smoothly discharge the abrasive powder, various types of slots are formed on the side of the casting roll. Conventionally, in machining such a slot, a method of machining a slot while rotating the casting roll at a constant speed has been used. However, in the conventional case, there is a limit to the minimum speed for rotating a heavy casting roll at a constant speed, and a time for machining one slot is limited in order to process a slot in a rotating casting roll. Therefore, there has been a problem in that the size, position and shape of the slot can not be precisely processed in the conventional case.

Korean Patent Publication No. 10-2009-0128188 (December 15, 2009)

SUMMARY OF THE INVENTION The present invention is directed to a slotting apparatus and method for casting a casting roll which can precisely and precisely process a slot having a specific shape on a side surface of a casting roll used in a thin plate manufacturing process.

A slot machining apparatus for a casting roll according to an embodiment of the present invention includes a measuring unit for photographing a rotating casting roll to generate image information; An image processing unit for image-processing the image information to analyze an actual rotation amount of the casting roll; A rotation signal is generated in accordance with a reference rotation amount which is an angle at which the casting roll is to be rotated, and a correction value to be corrected for a predetermined slot machining origin is calculated by comparing the actual rotation amount and the reference rotation amount, A control unit for generating a signal; A machining unit for correcting the slot machining origin in response to the machining signal and machining the slot at the corrected slot machining origin; And a roll rotation unit for rotating the casting roll by the reference rotation amount in response to the rotation signal.

Here, the controller senses the stop of rotation of the casting roll to generate the machining signal, and may generate the rotation signal when machining of the one slot is completed.

Here, the controller may set the reference rotation amount according to the number of the slots to be machined in the casting roll.

Here, the roll rotating unit may include a magnet brake for preventing rotation of the casting roll.

A method for machining a slotted casting roll according to an embodiment of the present invention includes: a first machining step of machining a first slot at a predetermined slot machining origin; A casting roll rotating step of rotating the casting roll by a reference rotation amount when the machining of the first slot is completed; An image information generating step of photographing the rotating casting roll to generate image information; A rotation amount analysis step of image-processing the image information to analyze an actual rotation amount of the casting roll; A correction value generation step of calculating a correction value for correcting the slot machining origin by comparing the actual rotation amount and the reference rotation amount; A machining point correction step of correcting the slot machining origin according to the correction value; And a second machining step of machining the second slot at the corrected slot machining origin.

The slot processing method of a casting roll according to an embodiment of the present invention includes a slot setting step of setting the shapes and the number of slots to be machined in the casting roll before the first slot is machined; And a reference rotation amount setting step of setting the reference rotation amount according to the number of the slots.

In addition, the means for solving the above-mentioned problems are not all enumerating the features of the present invention. The various features of the present invention and the advantages and effects thereof will be more fully understood by reference to the following specific embodiments.

According to the slot making apparatus and method of a casting roll according to an embodiment of the present invention, slots of a desired specific shape can be precisely machined on the side of the casting roll.

According to the apparatus and method for slotting a casting roll according to an embodiment of the present invention, the actual rotation amount of the casting roll is obtained by image processing of image information obtained by photographing the casting roll, and the actual rotation amount and the reference rotation amount The error can be corrected.

According to the slot forming apparatus and method of the casting roll according to the embodiment of the present invention, it is possible to stably produce and improve the quality of the product due to the slot machining of the precise casting roll.

1 is a view showing a configuration of a slot machining apparatus for a casting roll according to an embodiment of the present invention.
2 is a view showing an example of a slot in which a slot machining apparatus of a casting roll according to an embodiment of the present invention is machined.
Fig. FIG. 5 is a flowchart of a slot machining method of a casting roll according to an embodiment of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments 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 the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

1 is a view showing a configuration of a slot machining apparatus for a casting roll according to an embodiment of the present invention.

1, a slot processing apparatus for a casting roll according to an embodiment of the present invention includes a measuring unit 10, an image processing unit 20, a control unit 30, a machining unit 40, and a roll rotation unit 40 .

Hereinafter, a slot machining apparatus for a casting roll according to an embodiment of the present invention will be described with reference to FIG.

The measuring section 10 can photograph the rotating casting roll 1 to generate image information (i). Specifically, the measuring unit 10 may include a camera for photographing the casting roll 1. The camera may be any known one as long as it can capture a continuous image. The camera may be located on the side of the casting roll 1. In this case, the camera may be spaced a certain distance from the casting roll 1 so that the entire side surface of the rotating casting roll 1 is measured.

The measuring unit 10 may photograph the side surface of the casting roll 1 when the casting roll 1 rotates and end the shooting when the casting roll 1 stops rotating. The measurement unit 10 may transmit the image information i to the image processing unit 20.

The image processing unit 20 can analyze the actual rotation amount w_real of the casting roll 1 by image processing the image information i. Here, the actual rotation amount w_real may be an angle at which the casting roll 1 actually rotates. Specifically, the image information (i) may include a shape in which a machined slot is rotated on a side surface of the casting roll 1. [ In this case, the image processing unit 20 may analyze the actual rotation amount w_real with reference to one of the slots shown in the image information (i) or a specific position of the side of the casting roll 1 . The image processing unit 20 may transmit the actual rotation amount w_real to the control unit 30. [

The control unit 30 can generate the rotation signal s according to the reference rotation amount w_ref, which is an angle at which the casting roll 1 is rotated. Here, the reference rotation amount w_ref may be a reference angle for rotating the casting roll 1 to adjust the interval between the slots. That is, the reference rotation amount w_ref may indicate the interval between the slots to be processed. For example, when the reference rotation amount w_ref is 30 degrees, the slot processing apparatus of the casting roll 1 according to the embodiment of the present invention may be configured such that after the slot is processed one time, And then repeating the process of machining one slot next to the slot. The rotation signal s may be a signal for instructing the roll rotation unit 40 to rotate the casting roll 1 by the reference rotation amount w_ref. The control unit 30 may generate a rotation signal s containing information on the reference rotation amount w_ref and transmit the rotation signal s to the roll rotation unit 40. [

The controller 30 may calculate the correction value by comparing the actual rotation amount w_real with the reference rotation amount w_ref. The correction value may be a value for correcting the preset slot machining origin. The slot machining origin may be a predetermined point on the side surface of the casting roll 1, and the point at which the machining portion 40 starts machining the slot may be preset by the user. Specifically, even when the user tries to rotate the casting roll 1 only by the reference rotation amount w_ref, an error may occur in the distance that the casting roll 1 actually rotates. In this case, the controller 30 compares the reference rotation amount w_ref and the actual rotation amount w_real to obtain an error. The control unit 30 may calculate the correction value for correcting the error and generate the processed signal e according to the correction value. The machining signal e may be a signal instructing the machining section 40 to start machining by correcting the slot machining origin by the correction value. The control unit 30 can transmit the machining signal e to the machining unit 40. [

The control unit 30 may sense the rotation state of the casting roll 1. Specifically, the control unit 30 may detect that the rotation of the casting roll 1 is stopped and generate the machining signal e. In addition, the controller 30 may generate the rotation signal s when one slot is machined. Therefore, when one slot is formed in the casting roll 1, the control unit 30 may repeat the process of rotating the casting roll 1 by the interval between the slots and generating the next slot. In this case, the controller 30 may not generate the rotation signal s and the machining signal e when machining of all the slots is completed by the number of slots to be created by the user.

According to the slot machining apparatus of the casting roll 1 according to the embodiment of the present invention, the controller 30 can set the reference rotation amount w_ref according to the number of slots to be machined. Specifically, when the user sets the number of slots and slots to be machined in the casting roll 1, the controller 30 controls the operation of the casting roll 1 so that the slots are machined at regular intervals in accordance with the size of the casting roll 1, The total amount (w_ref) can be set.

The machining section 40 can process the slot at the slot machining origin in response to the machining signal e. Specifically, the processing unit 40 may include a laser device for etching a slot. The laser apparatus may be any one as long as it can etch a pattern or the like on the casting roll 1. The laser device may be located on the side of the casting roll (1). In this case, the slot machining origin may be a position at which the laser device emits the laser. For example, the slot machining origin may be an upper point in the middle of the side circle of the casting roll 1. [ In this case, the machining portion 40 always processes the slot at the same position (slot machining origin), but as the casting roll 1 rotates, all the slots surrounding the front side portion of the casting roll 1 are processed .

The machining unit 40 can correct the slot machining origin in response to the machining signal e. Specifically, the machining section 40 corrects the previously set slot machining origin by the correction value each time the casting roll 1 stops rotating, so that the actual turning amount w_real of the casting roll 1 becomes The slot can be machined precisely at a position desired by the user even when it is different from the reference rotation amount w_ref.

The processing unit 40 may have a storage unit in which various types of slot shapes are stored in advance. In this case, the user can select one of the slot types stored in the machining unit 40 and process the desired slot.

The roll rotation unit 40 can rotate the casting roll 1 by the reference rotation amount w_ref in response to the rotation signal s. The roll rotation unit 40 may be located on the side of the casting roll 1 and connected to the center axis of the casting roll 1. [ The roll rotation unit 40 can rotate the casting roll 1 by rotating the central axis of the casting roll 1 connected thereto.

The roll rotation unit 40 may include a speed reducer for adjusting the degree of rotation of the casting roll 1. The roll rotation unit 40 may include a magnet brake for preventing rotation of the casting roll 1. The magnet brake can apply braking to the rotation of the central axis of the casting roll 1 using an electromagnetic force. The magnet brake can stop the casting roll 1 more quickly and accurately after it rotates by the reference rotation amount w_ref. In addition, the magnet brake can keep the casting roll 1 in a stopped state when the machining portion 40 processes a slot in the casting roll 1. In addition to the magnet brake, the roll rotation unit 40 may include any known braking unit.

Fig. 2 is a view showing an example of a slot machined by the slot machining apparatus of the casting roll 1 according to the embodiment of the present invention.

Referring to FIG. 2, there is shown an example of the slots processed in a part of the casting roll 1, and the left and right sides indicate that separate slots are machined.

According to the slot machining apparatus of the casting roll 1 according to the embodiment of the present invention, slots of various and precise shapes can be machined according to the setting of the user. In this case, a plurality of slot shapes may be stored in the processing unit 40 or a separate storage space. Accordingly, the user can select any one of the pre-stored slot shapes before slot machining to set the slot shape to be machined.

Fig. FIG. 5 is a flowchart of a slot machining method of a casting roll according to an embodiment of the present invention. FIG.

Referring to FIG. 3, a method of forming slots of a casting roll according to an embodiment of the present invention includes a slot setting step S10, a reference turning amount setting step S20, a first machining step S30, S40, image information generation step S50, rotation amount analysis step S60, correction value generation step S70, machining point correction step S80 and second machining step S90.

Hereinafter, a slot machining method of a casting roll according to an embodiment of the present invention will be described with reference to FIG.

In the slot setting step S10, the shape and the number of slots to be machined can be set in the casting roll 1. [ In the slot setting step (SlO), the shape and the number of the slots can be inputted from the user. Specifically, in the slot setting step (S10), the user can select any one of the shapes of the slots stored in the machining unit 40 and set it as a slot to be machined.

In the reference rotation amount setting step S20, the reference rotation amount w_ref may be set according to the number of slots. In the reference rotation amount setting step S20, the control unit 30 can set the reference rotation amount w_ref so that the slots are processed at predetermined intervals in the casting roll 1 according to the number of the slots.

In the first machining step (S30), the first slot can be machined at the preset slot machining origin. Specifically, in the first machining step S30, the control unit 30 can generate the machining signal e. In this case, the machining signal e may be a signal instructing the machining section 40 to process one slot without changing the slot machining origin. In the first machining step S30, the machining section 40 can process one slot (first slot) at a predetermined slot machining origin in the side surface of the casting roll 1 first.

In the casting roll rotation step S40, the casting roll 1 can be rotated by the reference rotation amount w_ref. Specifically, in the casting roll rotating step S40, the controller 30 can detect that the first slot has been machined and generate the rotation signal s. In the casting roll rotating step S40, the roll rotating unit 40 may rotate the casting roll 1 in response to the rotation signal s.

In the image information generating step (S50), the rotating casting roll 1 can be photographed to generate image information (i). Specifically, in the image information generating step S50, the measuring unit 10 can photograph the side surface of the rotating casting roll 1. [ In the image information generating step S50, when the rotation of the casting roll 1 is stopped, the measuring unit 10 can stop shooting. In the image information generating step S50, the image information i generated by the measuring unit 10 may be transmitted to the image processing unit 20. [

In the rotation amount analysis step (S60), the actual rotation amount (w_real) of the casting roll (1) can be analyzed by image processing of the image information (i). Specifically, in the rotation amount analysis step S60, the image processing unit 20 calculates the actual rotation amount w_real of the casting roll 1 using the rotation image of the casting roll 1 contained in the image information i Can be analyzed. The actual rotation amount w_real may be an angle at which the casting roll 1 is rotated. In the rotation amount analysis step S60, the image processing unit 20 can transmit the actual rotation amount w_real to the control unit 30. [

In the correction value generation step S70, the control unit 30 compares the actual rotation amount w_real and the reference rotation amount w_ref to calculate a correction value to correct the slot machining origin. Here, the correction value may be a difference value between the actual rotation amount w_real and the reference rotation amount w_ref. In the correction value generation step S70, the control unit 30 may generate the machining signal e in accordance with the correction value.

In the machining point correction step (S80), the slot machining origin can be corrected according to the correction value. Specifically, in the machining point correction step S80, the machining unit 40 can correct the slot machining origin in response to the machining signal e. In this case, the machining unit 40 may correct the slot machining origin by adjusting the direction of the output portion from which the laser for machining the slot is ejected by the correction value.

In the second machining step (S90), the second slot can be machined at the corrected slot machining origin. Specifically, in the second machining step S90, the machining unit 40 may output a laser to the corrected slot machining origin in response to the machining signal e. Here, the second slot may be a slot having the same size and shape as the first slot.

The slot machining method of the casting roll 1 according to an embodiment of the present invention is characterized in that the steps are repeated until all the slots to be machined in the casting roll 1 are machined, The slots can be machined precisely.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: casting roll
10: Measuring section 20: Image processing section
30: control unit 40:
50:
i: Image information w_real: Actual rotation amount
w_ref: Reference rotation amount e: Machining signal
s: rotation signal
S10: Slot setting step
S20: Reference rotation amount setting step
S30: First machining step
S40: Casting roll rotation step
S50: image information generation step
S60: Rotation amount analysis step
S70: correction value generation step
S80: Machining point correction step
S90: 2nd machining step

Claims (6)

A measuring unit for photographing a rotating casting roll to generate image information;
An image processing unit for image-processing the image information to analyze an actual rotation amount of the casting roll;
A rotation signal is generated in accordance with a reference rotation amount, which is an angle at which the casting roll is to be rotated, and a correction value to be corrected for a preset slot machining origin is calculated by comparing the actual rotation amount and the reference rotation amount, A control unit for generating a signal;
A machining unit for correcting the slot machining origin in response to the machining signal and machining the slot at the corrected slot machining origin; And
And a roll rotation unit for rotating the casting roll by the reference rotation amount in response to the rotation signal,
The control unit
And detecting a stop of the rotation of the casting roll to generate the machining signal and generating the rotation signal when machining of the one slot is completed.
delete The apparatus of claim 1, wherein the control unit
And sets the reference rotation amount in accordance with the number of the slots to be machined in the casting roll.
2. The apparatus as claimed in claim 1,
And a magnet brake for preventing rotation of the casting roll.
A method of machining a slot of a casting roll,
A first machining step of machining a first slot at a preset slot machining origin;
A casting roll rotating step of rotating the casting roll by a reference rotation amount when the machining of the first slot is completed;
An image information generating step of photographing the rotating casting roll to generate image information;
A rotation amount analysis step of image-processing the image information to analyze an actual rotation amount of the casting roll;
A correction value generation step of calculating a correction value for correcting the slot machining origin by comparing the actual rotation amount and the reference rotation amount;
A machining point correction step of correcting the slot machining origin according to the correction value; And
And a second machining step of machining a second slot at the corrected slot machining origin.
6. The method of claim 5, wherein before machining the first slot
A slot setting step of setting the shape and the number of slots to be machined in the casting roll; And
And setting a reference rotation amount in accordance with the number of the slots.

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