KR101670851B1

KR101670851B1 - revision apparatus and measurement for flatness of plate

Info

Publication number: KR101670851B1
Application number: KR1020150069490A
Authority: KR
Inventors: 손준길
Original assignee: (주)가온솔루션
Priority date: 2015-05-19
Filing date: 2015-05-19
Publication date: 2016-10-31

Abstract

The present invention relates to a flatness measurement and correction apparatus for a plate.
The present invention relates to a work table comprising a work table main body in which a transfer line on which a plate as a workpiece is transferred to the left and right is formed in a lateral direction and a control section on which a set program is installed is installed; A first guide plate downwardly mounted on a frame provided on the upper side of the main body corresponding to the upper side of the transfer line and having a pair of first guide rails on both sides; A second guide plate mounted upward on a frame provided on a lower side of the main body corresponding to a lower side of the transfer line and having a pair of second guide rails on both sides; The first and second guide rails are disposed parallel to the first and second guide rails. The first and second guide rails are disposed between the first and second guide rails. The first and second guide rails are mounted on the first and second servomotors. First and second shafts having threads formed therein; A first and a second compensation jigs supported on the first and second guide rails and having a central portion divided on both sides with respect to a central portion of the first and second shafts; Third and fourth servomotors provided on both outer sides of the first and second correction jigs; And third and fourth guide rails disposed in pairs on both sides of the first and second correction jigs, respectively, and interlocked with the third and fourth servomotors to receive power of the third and fourth servomotors, And first and second push blocks operated simultaneously or individually by the control.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flatness measuring apparatus,

The present invention relates to a plate flatness measuring and correcting apparatus, and more particularly, to a plate flatness measuring and correcting apparatus which irradiates a surface of a plate, which is a workpiece to be fed, with a laser beam, And then the workpiece is transferred. The laser beam is repeatedly irradiated to the surface of the workpiece to find an arbitrary position that is larger or smaller than the set reference value, and the plate is corrected within a standard tolerance range that does not deviate significantly from the reference value And more particularly to a flatness measuring and correcting apparatus for a flatness of a plate.

Generally, various types of metal plates (or steel plates) manufactured with a purpose or an independent function or purpose for use as parts of machines mounted on various machines are manufactured to various sizes.

Metal plates (or steel plates) manufactured with various purposes and uses are usually manufactured in a flat shape regardless of the purpose and use of the metal plate, so that the conditions for satisfying the purpose of the metal plates are satisfied.

Therefore, various flatness measuring devices for measuring the flatness of the produced plate have been developed.

Most known flatness measuring apparatuses have a flatness measuring apparatus for measuring the flatness of the surface of a metal plate with a taper gauge. However, such a flatness measuring apparatus can not be continuously inspected and thus it is difficult to detect partial defects However, there was a problem that it was impossible to respond promptly to defects.

Also, due to the nature of the metal material to measure the flatness of plates and steel plates made of metal products, workers are exposed to dangerous environment and there is a concern about safety accidents.

In order to solve such a problem, a flatness measuring apparatus which can continuously measure the flatness of the steel sheet produced on-line and measures the flatness using a laser device and a CCD camera in a non-contact manner has been actively developed A flatness measuring apparatus having such a structure is disclosed in Korean Patent Publication No. 2006-0117679, Korean Patent Publication No. 2004-0059198, and Korea Registered Utility Model No. 20-0377553.

However, in such flatness measuring apparatus according to the conventional art, in general, a general-purpose line laser, which is commercially available on the market, is used in an apparatus for measuring the flatness by a laser irradiation apparatus, .

KR 10-2006-0117679 A

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an apparatus and a method for measuring a surface flatness of a plate by irradiating a laser beam onto a surface of a plate, And a flatness measuring and correcting device for flattening and correcting the bending portion so as to extend into the error range.

It is another object of the present invention to provide a method of manufacturing a metal plate which can continuously measure the flatness of a metal plate to be machined and accurately locate the defective portion, that is, the bent portion, And to provide a flatness measurement and correction apparatus for a plate having a flatness.

It is still another object of the present invention to provide a plate flatness measuring and correcting device which prevents a worker from being exposed to a dangerous environment and thereby preventing a concern about safety accidents.

In order to accomplish the above object, according to an embodiment of the present invention, there is provided a work table comprising: a work table main body having a control unit mounted with a set program in which a transfer line for transferring a plate as a work to left and right is formed in a lateral direction; A first guide plate downwardly mounted on a frame provided on the upper side of the main body corresponding to the upper side of the transfer line and having a pair of first guide rails on both sides; A second guide plate mounted upward on a frame provided on a lower side of the main body corresponding to a lower side of the transfer line and having a pair of second guide rails on both sides; The first and second guide rails are disposed parallel to the first and second guide rails. The first and second guide rails are disposed between the first and second guide rails. The first and second guide rails are mounted on the first and second servomotors. First and second shafts having threads formed therein; A first and a second compensation jigs supported on the first and second guide rails and having a central portion divided on both sides with respect to a central portion of the first and second shafts; Third and fourth servomotors provided on both outer sides of the first and second correction jigs; And third and fourth guide rails disposed in pairs on both sides of the first and second correction jigs, respectively, and interlocked with the third and fourth servomotors to receive power of the third and fourth servomotors, A flatness measuring and correcting device for a plate including first and second push blocks operated simultaneously or individually by control.

In a first modification for effectively implementing the object of the embodiment, a beam is emitted inside the first push block on the surface of the plate, which is fed at a predetermined speed for a predetermined time through the transfer line, It is effective that the flatness measuring unit is further provided.
In order to effectively realize the object of the embodiment, it is effective that a pressure measuring part for measuring the pressure by applying pressure to the bottom surface of the plate by the fourth servomotor is further provided on the inside of the second push block to be.

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The present invention having the above-described configuration has the following effects.

First, the laser beam is irradiated to the surface of the plate, which is the workpiece to be transferred, to quickly find and correct the upper and lower bent portions, which are nonuniform flatness, to maintain the flatness within the tolerance range.

Secondly, there is also an effect of preventing defective products by accurately and promptly locating and correcting the position where the flatness of the plate as the workpiece is defective.

Third, there is an effect that the worker is not exposed to the dangerous environment and accordingly, the problem of the safety accident is prevented in advance.

1 is a perspective view of an apparatus for measuring and correcting flatness of a plate according to the present invention;
2 is a front view of a flatness measuring and correcting apparatus according to the present invention;
FIG. 3 is a front view showing a state where the plate flatness measuring and correcting apparatus according to the present invention corrects a portion bent to the lower side
FIG. 4 is a front view showing a state in which a plate flatness measuring and correcting device according to the present invention corrects a portion bent upward; FIG.
FIGS. 5A to 5C are enlarged views of essential parts of the flatness measuring and correcting device of the plate according to the present invention, according to the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a state in which a plate flatness measuring and correcting apparatus according to the present invention is roughly installed in a main body, and FIG. 2 is a front view of a plate flatness measuring and correcting apparatus according to the present invention. .

As shown in the drawing, the apparatus for measuring and correcting the flatness of a plate according to the present invention is characterized in that a conveying line in which a plate P, which is a workpiece, And installed on a work table main body 10 provided with a control unit (not shown) equipped with a set program.

A first guide plate 20 having a pair of first guide rails 21 is mounted downward on both sides of the frame 11 provided on the upper side of the main body 10 corresponding to the upper side of the transfer line.

A second guide plate 30 having a pair of second guide rails 31 is mounted on both sides of the frame 12 provided below the main body 10 corresponding to the lower side of the transfer line.

That is, the first and second guide plates 20 and 30 are installed facing up and down.

The first and second shafts 22 and 32 are disposed between the first and second guide rails 21 and 31 so as to be parallel to the first and second guide rails 21 and 31, One side of the first and second shafts 22 and 32 is mounted on the first and second servomotors 23 and 33 while the other side is axially supported on the first and second bearings 24 and 34.

The first and second shafts 22 and 32 are threaded in opposite directions with respect to the center in the longitudinal direction.

The first and second guide rails 21 and 31 and the first and second shafts 22 and 32 are provided on both sides with respect to the center of the first and second shafts 22 and 32, 1,2 compensation jigs 40 (40 ') 50 (50') are arranged in pairs.

The third and fourth servomotors 41, 41 ', 51 and 51' are vertically installed on both sides of the first and second correction jigs 40, 40 ', 50 and 50' And third and fourth guide rails 43, 43 ', 53 and 53' are disposed on both sides of the inner sides of the first and second correction jigs 40, 40 ', 50 and 50' The power of the third and fourth servo motors 41, 41 ', 51 and 51' is transmitted to the third and fourth guide rails 43, 43 ', 53 and 53' The first and second push blocks 42, 42 ', 52 and 52', which are operated simultaneously or individually, under the control of the control unit 50, are mounted in pairs.

The power of the third and fourth servo motors 41, 41 ', 51 and 51' is transmitted to the first and second push blocks The first and second push blocks 42, 42 ', 52 and 52' are operated upward and downward, respectively, while the first and second push blocks 42, 42 ', 52 and 52'

It is effective that the front end of the first and second push blocks 42, 42 ', 52 and 52' which are in contact with the plate P which is the workpiece and are pressed is formed as a curved surface so as not to damage the workpiece .

On the other hand, a beam is emitted to the inside of any one of the first push blocks 42 and 42 'constituted by pairs to transmit the beam to the surface of the plate P, And a flatness measuring unit 60 for measuring the flatness of the surface by the height difference and transmitting the measured value, that is, the position of the bent portion to the control unit.

The flatness measuring unit 60 measures the flatness of the plate by measuring the arrival distance of the laser beam, which varies with the surface of the plate P being moved by irradiating the laser beam.

In addition, a servo motor of any one of the fourth servomotors 51 and 51 'is provided on the inner side of any one of the pair of the second push blocks 52 and 52' And a pressure measuring unit 70 for measuring the pressure and transmitting the measured pressure value to the control unit.

It is effective that the pressure measuring unit 70 is provided with a pressure sensor for measuring a pressure value after the pressure is applied for a predetermined period of time, and transmitting the pressure value to the control unit.

The operation of the present invention configured as described above will be described.

First, the pre-operation state of the present invention is in a state as shown in Figs.

The above state is obtained by repeatedly feeding the plate P, which is the workpiece, through the transfer line for a preset time at a speed set by the control of the control unit, The surface of the plate P is irradiated with a laser beam and the flatness is measured.

For example, if the moving speed of the plate P is 50 mm / sec and the reading speed of the flatness measuring unit 60 is 10 times / sec, the line is checked at intervals of 5 mm to check the bending state.

More specifically, the control unit checks the plate P to which the flatness measuring unit 60 is fed at intervals of 5 mm, and transmits the checked information to the control unit.

That is, assuming that the reference value "0" is the allowable error "±" 0.1 mm, the control section measures the flatness degree measurement section 60 in a period of 0.3 mm lower than the reference value " 0 " In the other section that is curved and measured, 0.3 mm is smaller than the reference value "0 ", and a position where the curve is curved upward is memorized.

The above measuring operation proceeds over several times.

Meanwhile, in the state where the measurement of the flatness measuring unit 60 is completed as described above, the controller corrects the section of the plate P out of the tolerance.

For example, as shown in FIG. 3, when the section measured by the flatness measuring section 60, that is, the section to be corrected is curved downward by 0.3 mm from the reference value " 0 " 1 and 2 servomotors 23 and 33, respectively.

Therefore, when the first and second servomotors 23 and 33 are operated by a command from the control unit, the first and second shafts 22 and 32 The first and second correction jigs 40, 40 ', 50 and 50' are opened or closed to the left or right and the gap is adjusted.

That is, the first and second shafts 22 and 32 have the first and second correction jigs 40 and 40 ', respectively, via a shaft idling by a structure in which threads are formed in opposite directions with respect to the center of the first and second shafts 22 and 32, ) 50 and 50 'are widened or narrowed left and right.

When the position to be corrected is determined by the above operation, the first push block 42 or 42 'installed on the first correction jig 40 or 40' is downward and the plate P is bent downward And the second servo motor 41 is operated and the second push block 52 'is positioned between the first push block 42 and the second push block 42' .

At the same time, the third servomotors 41 and 41 'are operated and the first push blocks 42 and 42' are lowered to support the starting and ending points of the bent portions of the plate, respectively, 51 'are operated and the second push block 52' is operated upward to apply a pressure to the downward bent portion to be unfolded (see FIG. 5A). (See FIG. 5A)

At this time, the first and second push blocks 42, 42 ', 52 and 52' are connected to each other via the third and fourth guide rails 43, 43 ', 53 and 53' Sliding operation.

On the other hand, the above operation is repeatedly performed so as not to deviate greatly from the pressure value measured by the pressure measuring unit 70. When the correction is completed, the first inspection is performed as described above. The above operation is repeated.

Similarly, when the position 0.3 mm is "-" smaller than the measured reference value "0" and the upward curved position is the same as that in FIG. 4, the operation is reversed to the operation described above and the curved portion is unfolded as shown in FIG. do.

5C, when the curvature is formed on the edge portion of the plate P, the second push block 52 'and the second push block 52' upwardly support the flat lower portion of the plate P, The push block 42 downwardly supports the center point of the upwardly supporting second push block 52 or 52 'to firmly support the plate P and the other first push block 42' And can be corrected by flatly spreading the edge portions of the upper spreading plate.

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is therefore to be understood that the embodiments described above are to be considered in all respects as illustrative and not restrictive and the scope of the invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10; Main bodies 11 and 12; frame
20, 21; First and second guide rails 22 and 32; First and second shafts
23, 33; First and second servo motors 24 and 34; First and second bearings
40, 40 '; First correction jigs 41, 41 '; Third servo motor
42, 42 '; A first push block 43, 43 '; Third guide rail
50, 50 '; Second correction jigs 51, 51 '; 4th servo motor
52, 52 '; A second push block 53, 53 '; The fourth guide rail
60; A flatness measuring unit 70; Pressure measuring unit
P; plate

Claims

A work table main body in which a transfer line in which a plate as a workpiece is transferred to the left and right is formed in a lateral direction and a control section equipped with a set program is installed;
A first guide plate downwardly mounted on a frame provided on the upper side of the main body corresponding to the upper side of the transfer line and having a pair of first guide rails on both sides;
A second guide plate mounted upward on a frame provided on a lower side of the main body corresponding to a lower side of the transfer line and having a pair of second guide rails on both sides;
The first and second guide rails are disposed parallel to the first and second guide rails. The first and second guide rails are disposed between the first and second guide rails. The first and second guide rails are mounted on the first and second servomotors. First and second shafts having threads formed therein;
A first and a second compensation jigs supported on the first and second guide rails and having a central portion divided on both sides with respect to a central portion of the first and second shafts;
Third and fourth servomotors provided on both outer sides of the first and second correction jigs; And
The first and second compensation jigs are supported by the third and fourth guide rails arranged in pairs on both sides of the first and second compensation jigs, and are interlocked with the third and fourth servomotors, The first and second push blocks being operated simultaneously or individually by the first and second push blocks.

The method according to claim 1,
And a flatness measuring unit for measuring a flatness due to a height difference of the surface of the plate by emitting a beam to a surface of the plate, which is transported at a predetermined speed for a predetermined time through the transfer line, to the inside of the first push block Flatness measuring and correcting device for a flat plate.

The method according to claim 1,
And a pressure measuring unit for measuring pressure by applying pressure to the bottom surface of the plate by the fourth servomotor on the inner side of the second push block.