KR101279313B1 - Grinder with detecting shape of slab - Google Patents

Abstract

The present invention relates to a grinding machine equipped with a slab shape measuring device, and the grinding device according to the present invention includes a work table, a slab, a first moving base, a second moving base, a grinder, a distance measuring unit, and a controller. The work table is provided on the xy plane, and a reference line is formed in the x axis direction. A slab is provided on the workbench and one side is aligned on the reference line. The first moving base is provided on a plane parallel to the work table and reciprocates in the x-axis direction. The second moving base is provided on the first moving base and reciprocates in the y-axis direction. The grinder is fixed on the second moving base to polish the slab provided on the work table. A distance measuring unit is provided on the first moving base to measure the distance to the side of the slab adjacent to the reference line. The control unit controls the first moving base to move the distance measuring unit in the x-axis direction, and controls the distance measuring unit to continuously measure the distance to the slab.
Grinding device equipped with a slab shape measuring apparatus according to the present invention can predict the work restriction area according to the shape of the slab so that a failure does not occur by the camber generated in the slab of the grinding work area.

Description

Grinding device with slab shape measuring device {Grinder with detecting shape of slab}

The present invention relates to a grinding machine equipped with a slab shape measuring apparatus, and more particularly, to a grinding machine capable of measuring the working area of the slab to be worked.

In general, slabs produced through steelmaking and casting processes are immediately rolled as hot rolled coils and cold rolled coils, but slabs that have been judged as component abnormalities, quality abnormalities, and dimension abnormalities are given a flaw generation code, that is, a cutting code, and are placed in a correction bed. When is cooled, it is melted to completely remove the flaw on the surface of the slab and then charged into a hot-rolled furnace.

The grinder machine, which is a conventional slab surface polishing machine, measures only the length of the slab, and the width data polishes the slab on the upper part of the manifold while automatically reciprocating the rail while maintaining a constant pitch by a pre-input value.

In this case, in the case of a normal slab, the upper surface of the slab is polished up to the last pitch, but the shape of the slab is not normal and may be changed in various forms due to thermal deformation. The fin of the rolled sheet is called a camber. When a camber occurs in the slab, an edge portion or an empty space of the slab may be formed on the grinding work area. If the slab is bent in this working area and the grinding stone and the slab of the grinding machine do not contact normally, the abrasive stone and the slab unexpectedly collide with each other and are broken, and the slab digging occurs.

As to solve the above problems,

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a means for predicting the shape of a slab or a part that is difficult to work due to deformation of the slab in the work area for polishing the slab.

In addition, an object of the present invention is to provide a grinding machine that can work stably and easily by providing a worker with information about a work area during grinding work.

In order to achieve the above technical problem,

The grinding device according to the present invention includes a work table, a slab, a first moving base, a second moving base, a grinder, a distance measuring unit, and a controller.

The work table is provided on the xy plane, and a reference line is formed in the x axis direction.

A slab is provided on the workbench and one side is aligned on the reference line.

The first moving base is provided on a plane parallel to the work table and reciprocates in the x-axis direction.

The second moving base is provided on the first moving base and reciprocates in the y-axis direction.

The grinder is fixed on the second moving base to polish the slab provided on the work table.

A distance measuring unit is provided on the first moving base to measure the distance to the side of the slab adjacent to the reference line.

The control unit controls the first moving base to move the distance measuring unit in the x-axis direction, and controls the distance measuring unit to continuously measure the distance to the slab.

In addition, when the distance from the slab is greater than the distance from the reference line at a specific position, the controller may set an area from the reference line to the distance of the slab at the corresponding position as a work restriction region.

The apparatus may further include an input unit configured to receive a physical standard of the slab aligned with the work table.

Further, assuming that a line parallel to the reference line from the reference line and separated by the width of the slab is a working limit line, and a value obtained by subtracting the distance from the reference line to the slab is a correction value, the control unit at a specific position When the measured distance from the slab is closer than the reference line, the work limit region may be set to the point of the distance obtained by subtracting the correction value from the work limit line.

In addition, the controller may control the grinding operation to not perform the grinding operation during the grinding operation.

Further, when the width of the work restriction area is less than or equal to a preset reference value, the controller may perform the grinding work to the corresponding work restriction area.

The apparatus may further include a work area calculated from the reference line and the slab standard, and a monitoring unit displaying the work limit area to the user.

Furthermore, an input unit may be provided to receive a progress input of a task on a specific task restriction area from a user. At this time, if the user selects the progress of the work for the specific work restriction area, the controller proceeds to the grinding work up to the work restriction area.

Grinding device equipped with a slab shape measuring apparatus according to the present invention can predict the work restriction area according to the shape of the slab so that a failure does not occur by the camber generated in the slab of the grinding work area.

In addition, according to the present invention it is possible to perform a more easy and stable grinding operation using the information on the work restriction area.

1 is a schematic plan view showing a grinding machine according to an embodiment of the present invention.
2A is a schematic plan view showing an example of a slab aligned with a baseline of the work bench.
2B is a schematic plan view showing another example of slabs aligned to the baseline of the work bench.
2C is a schematic plan view showing another example of a slab aligned with a baseline of the work bench.
2D is a schematic plan view showing another example of a slab aligned with the baseline of the work bench.
Figure 3 is a block diagram showing the electrical and control connection of the grinding machine according to an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the absence of special definitions or references, the terms used in this description are based on the conditions indicated in the drawings. The same reference numerals denote the same members throughout the embodiments. For the sake of convenience, the thicknesses and dimensions of the structures shown in the drawings may be exaggerated, and they do not mean that the dimensions and the proportions of the structures should be actually set.

The present invention can be broadly divided into an electrical configuration representing a mechanical configuration and a control flow.

First, a mechanical configuration of a grinding machine according to an embodiment of the present invention will be described with reference to FIGS. 1 to 2D. 1 is a schematic plan view showing a grinding machine according to an embodiment of the present invention, Figures 2a to 2d is a schematic plan view showing each other example of the slab aligned to the baseline of the workbench.

First, as shown in FIG. 1, the first moving base 120 includes various other components on a plate-shaped base moving in the x-axis direction so that the corresponding components can move in the x-axis direction.

An x-axis working rail 121 or the like is formed at the bottom of the first moving base 120 to move the first moving base 120 in the x-axis direction, such that the first moving base 120 can move along a predetermined track. Make sure The first moving base 120 reciprocates the x-axis under the control of the controller 200 to be described later.

The second moving base 130 is provided on the first moving base 120. That is, another working rail 131 or the like is provided on the first moving base 120 in the y-axis direction, and the second moving base 130 is fixed along the y-axis working rail 131 in the y-axis direction. It will reciprocate along the track.

Meanwhile, the above-described first moving base 120 and the second moving base 130 are preferably provided to be parallel to the xy plane in order to precisely process the slab provided on the work bench 110 to be described later.

The grinder 140 is provided on the second moving base 130. The grinder 140 includes the abrasive stone 141, the motor 142, and the like. The abrasive stone 141 is provided at the end of the grinder 140 to polish the surface of the slab aligned on the work bench 110 to be described later. The motor 142 rotates the abrasive stone 141 to enable the polishing operation.

Meanwhile, the grinder 140 may be positioned at a desired position to perform the grinding operation by controlling the first moving base 120 and the second moving base 130 moving in the x-axis direction to move to a desired coordinate value. .

The work table 110 is formed in a plate shape to perform the grinding work in a state in which the slab is stacked. The work bench 110 is provided on a plane parallel to the first moving base 120 and the second moving base 130 described above. In addition, the worktable 110 may be provided with a roller 112 or the like to facilitate the alignment and movement of the slab. In addition, a reference line 111 for aligning the slab 100 is formed at a side adjacent to the first moving base 120 side of one side of the work table 110. The reference line 111 serves to facilitate the alignment of the slab 100, and then serves as a reference line for predicting the shape of the slab 100 by measuring the distance to the slab 100. The aligned slab 100 may facilitate the alignment of the slab 100 by the slab support 113 formed to protrude.

Meanwhile, as described above, the slab 100 may generate a camber due to thermal deformation. Camber can be divided into various types according to occurrence cases. That is, as shown in FIG. 2A, a camber may be generated in the entire slab 100a to bend upward or downward. In this case, the slab 100a may be bent in the normal work area, such that an empty area A2 may occur. When the grinding work is performed in the empty space A2 (hereinafter referred to as the “work restricted area”) or the edge portion of the working area, the grinding stone may fall and the grinder may be damaged. On the other hand, the portion A1 in which the slab 100a is bent out of the work area is not a big problem since it is not a work area in which grinding work is automatically performed during normal work.

Meanwhile, as shown in FIG. 2B, camber is generated on the entire edge of the first piece or the piece of the slab 100b or camber is generated on the part of the piece of the piece or the piece of the slab 100c so that poor adhesion occurs on the reference line 111. Can be. Also in this case, the work restriction area A2 may occur, and the grinder may fall. Also, as shown in FIG. 2D, even in the case of the normal slab 100 in which the camber is not generated, when the alignment is poor, the work restriction area A2 may appear.

The distance measuring unit 150 is provided on the first moving base 120 and measures the distance L1 to the side surface of the slab 100 adjacent to the reference line 111. That is, the distance measuring unit 150 measures the distance to the side surface of the slab 100 while moving in the x-axis direction along the first moving base 120. As the distance measuring unit 150, a distance measuring device using a laser or the like may be used, and the distance data measured in this manner is converted into an electrical signal and transmitted to the controller 200 or the work system 160 to be described later.

On the other hand, the distance measuring unit 150 is preferably provided with a protective cover (not shown). The protective cover functions to protect the sensor in the distance measuring unit 150 from chips, such as chips, generated during the grinding operation of the slab 100.

Referring to Figure 3 will be described an electrical configuration showing the control flow of the grinding machine according to an embodiment of the present invention. Figure 3 is a block diagram showing the electrical and control connection of the grinding machine according to an embodiment of the present invention.

As described above, the controller 200 controls the first moving base 120 and the second moving base 130 to move the grinder 140 provided on the second moving base 130 in a desired coordinate direction. The grinder 140 is controlled to perform the grinding work.

However, in the step of measuring the shape of the slab before performing the grinding operation, after stopping the operation of the grinder, only the first moving base 120 is moved, and the distance measuring unit 150 is controlled to receive the distance data to the slab. do.

In addition, the control unit 200 predicts the work limit area by using the received distance data to the slab and transmits it to the work system 160 which will be described later. The prediction method of the work restriction area is described in detail as follows.

In most cases, it is easy to predict the shape of the entire camber by measuring the distance to the side of the adjacent slab. That is, in the case of having a generally uniform shape as shown in FIG. 2A or 2D according to continuously measured distance data while moving in the x-axis direction, the type of camber can be easily identified.

However, as shown in FIGS. 2B and 2C, when a camber is generated in part, it is difficult to determine whether the camber is generated on the opposite side where the distance is not measured. If the camber is generated and the distance from the area to the side of the slab is larger than the reference line, the opposite side of the slab is normal or protrudes out of the working area corresponding to the size of the slab. In this case, therefore, the work limiting area needs only to be set in consideration of the camber of the side whose distance is measured. On the contrary, when the distance to one side of the slab is smaller than the distance to the baseline as in the case of the left side of FIG. 2B, the grinding work is stopped or predicted by the camber on the opposite side. Allows you to determine whether work is interrupted or continued.

In other words, when the distance from the slab is greater than the distance from the reference line at a specific position, the controller 200 sets an area from the reference line to the slab distance at the corresponding position as a work restriction area. In addition, when the distance from the slab measured at a specific position is closer than the reference line, from the work limit line to the fingerprint of the distance obtained by subtracting the correction value, the work limit area A2 is set.

In this case, the working limit line refers to a line separated by the width of the slab from the reference line, and the correction value refers to a value obtained by subtracting the distance from the point to the slab from the point to the reference line. That is, the work limit line refers to an area where work can be performed on the opposite side of the reference line when the normal slabs are aligned, and the correction value refers to the size of the camber at the point where the work is performed.

When the job limiting area A2 is detected, the control unit 200 may automatically prevent the camber from grinding the area where the corresponding camber is detected or expected, that is, the job limiting area A2. In order to receive the input, the corresponding information may be transmitted to the working system 160 which will be described later.

Meanwhile, the controller may transmit only the measured distance data to a work system to be described later, and the calculation of the work limit area may be performed by a separate work system to be described later.

The work system 160 is electrically connected to the above-mentioned grinding machine and is configured to receive data from the above-described control unit 200 at a remote location or to transmit specific data and commands to the above-described control unit 200. The working system 160 may be configured as a general computer system or a server, and may be formed as a system that is physically the same as the configuration of the control unit 200 or the like. It is also possible to be provided.

The work system 160 may include a monitoring unit 161 and an input unit 162. The monitoring unit 161 displays the work area calculated from the reference line and the slab standard and the work limit area to the user so that the progress of the work can be monitored.

The input unit 162 receives a command from the operator such as the physical specifications of the slab aligned with the work table or the start, stop, or resume of work. That is, when the work limiting area A2 is predicted as described above and the worker is configured to select whether to resume or stop the work, the grinding work is received through the control unit 200 by receiving such a selection command from the worker. This can be stopped or continued.

In this way, it is possible to control the driving operation of the grinding machine by predicting the work limit region from the deviation between the distance measurement data value to the slab and the reference value which is the distance to the reference line. According to the present invention, by knowing the shape of the slab form due to thermal deformation using the distance difference from the reference point, the operator can take action such as determining whether to grind according to the shape of the slab, and thus equipment damage due to the grinding machine wheel damage and side slab feeding Can prevent abnormality of slab surface quality, such as stamping.

Although the preferred embodiments of the present invention have been described above, the technical spirit of the present invention is not limited to the above-described preferred embodiments, and various slab shape measuring devices in a range not departing from the technical spirit of the present invention specified in the claims. It may be implemented as a grinding device provided with.

100: slab 110: workbench
111: baseline 112: roller
113: slab support 120: first moving base
121: x-axis moving rail 130: second moving base
131: y-axis moving rail 140: grinder
141: abrasive stone 142: motor
150: distance measuring unit 160: working system
161: monitoring unit 162: input unit
200:

Claims (8)

a work table provided on the xy plane and having a reference line formed in the x-axis direction;
A slab provided on the work table and having one side aligned with the reference line;
A first moving base provided on a plane parallel to the work table and reciprocating in the x-axis direction;
A second moving base provided on the first moving base and reciprocating in the y-axis direction;
A grinder fixed to the second moving base to grind the slabs provided on the work table;
A distance measuring unit provided on the first moving base to measure a distance to a side surface of the slab adjacent to the reference line; And
And a control unit controlling the first moving base to move the distance measuring unit in an x-axis direction and controlling the distance measuring unit to continuously measure the distance to the slab.
And the control unit sets the area from the reference line to the slab distance at the corresponding position as the work restriction area when the distance from the slab at the specific position is greater than the distance from the reference line.
delete The method of claim 1,
Grinding apparatus further comprises an input unit for receiving the physical specifications of the slab aligned with the worktable.
The method of claim 3,
Assuming that a line parallel to the reference line from the reference line and separated by the width of the slab is a working limit line, a value obtained by subtracting the distance from the reference line to the slab is a correction value,
And the control unit sets a work limit region to a point of a distance obtained by subtracting the correction value from the work limit line when the distance from the slab measured at a specific position is closer than the reference line.
The method according to claim 1 or 4,
The control unit is a grinding device for controlling not to grind the work restriction area during the grinding operation.
The method of claim 5,
And the control unit performs a grinding operation to the corresponding job limiting area when the width of the job limiting area is equal to or less than a preset reference value.
The method of claim 5,
And a work area calculated from the reference line and the slab standard, and a monitoring unit for displaying the work limit area to the user.
The method of claim 7, wherein
It has an input unit for inputting the progress of the operation on the specific job restriction area from the user,
The control unit is a grinding device for performing a grinding operation to the work restriction area when the user selects the progress of the work for a specific job restriction area.

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