JPH06294628A - Profile measuring equipment for rectangular member - Google Patents

Abstract

PURPOSE:To detect the cross-sectional dimension and the central coordinate of a rectangular member accurately even if the rectangular member has a rough surface by disposing two sets of CCD units having the view range wider than the transfer shift range of the rectangular member on two adjacent sides thereof. CONSTITUTION:A CCD unit 12 comprises CCD cameras 8a, 8b having view angles 9a, 9b wider than the transfer shift ranges 7a-7d of a rectangular member 1, and parallel light sources 10a, 10b having light projecting directions 11a, 11b. When the rectangular member 1 enters into the CCD units 12, the parallel light source 10 having the width wider than the transfer shift range 7 of the rectangular member 1 and the CCD camera 8 having the view angle wider than the transfer shift range detect the position of the rectangular member 1 and delivers a position detection signal 13 to a data processor 15. The processor 15 processes the position detection signal 13 and an externally received angular member longitudinal direction distance signal to calculate the cross-sectional dimension 5 and the central coordinate 6 of the rectangular member 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-destructive inspection facility for an inspection line such as a square billet having a rod shape.

[0002]

2. Description of the Related Art FIGS. 7 and 8 are views showing a conventional corner member shape measuring apparatus, in which 1 is a corner member and 2a-2.
d is a sensor installed vertically on each surface of the corner member, 3a to 3
d is an amplifier for converting a change in the output signal of the sensor 2 into an electric signal for amplification, and 4 is a synthesis processing of the signal of the amplifier 3,
This is an arithmetic unit having means for converting an analog signal into a digital signal and outputting the cross-sectional dimension output 5 and the center coordinate output 6 of the square member 1 being conveyed.

Next, the operation will be described. In the angular member shape measuring device configured as described above, the angular member 1
When the sensor passes the sensor 2, the sensor 2 sends to the amplifier 3 the change in the output signal that occurs when the sensor 2 passes the corner member. The output signal converted into an electric signal by the amplifier is combined by the arithmetic unit 4, and the cross-sectional dimension output 5 and the center coordinate output 6 are output.
I do.

[0004]

The conventional corner member shape measuring device is constructed as described above. However, since the angular member being conveyed is a rolled material, its surface texture is rough, and the level of the reflected wave from a sensor typified by an ultrasonic sensor, etc. was not always easily correlated with the incident angle and the transmission distance. There is a big problem that the accuracy of the central coordinate output is low.

The present invention has been made in order to solve the above-mentioned problems. Even if the surface properties of the corner member are rough, accurate cross-sectional dimension output and center coordinate output of the diamond-fed corner member can be performed. An object of the present invention is to obtain a corner member shape measuring device having a function of determining whether or not the cross-sectional dimension of a corner member being conveyed and the central coordinate, which is the amount of shake of conveyance, are within allowable values.

[0006]

A corner member shape measuring apparatus according to the present invention has a CCD camera having a viewing angle which is equal to or larger than a conveyance shake range of the corner member on two sides of the corner member, and a conveyance shake range of the corner member. Two sets of light sources that emit parallel light having the above width are used, and a first data processing device having means for outputting the cross-sectional dimensions and the center coordinates of the corner member is provided.

Further, there is provided a second means for outputting the center coordinates of the tip position of the corner member at an arbitrary position after passing by using the outputs of the two corner member shape measuring devices arranged in the longitudinal direction of conveyance. The data processing device of FIG.

Further, the CRT which takes in the angular member cross-section dimension output and the corner member corner curvature dimension information input from the host computer into the image processing device and constantly displays the angular member cross-sectional shape.
It is equipped with.

Further, the square member cross section allowable dimension information and the square member allowable transport dimension deviation information inputted from the host computer are compared with the square member cross section dimension output which is the amount of deviation of the conveyance, and the cross section normal output and the cross section dimension are output. An abnormal output, a normal conveyance shake output, and a conveyance shake abnormality output means are provided.

[0010]

The square member shape measuring device according to the present invention outputs accurate conveying positions and central coordinates even with a rough square member having a surface texture by means of two sets of attached CCD cameras and a light source.

Also, by using two sets of the above-mentioned angular member shape measuring device, the center coordinate output of the angular member output from each measuring device and a predetermined distance between the two formulas are calculated to obtain the above-mentioned angular member. Outputs the tip coordinates of.

Further, the corner member shape output is used by arithmetically synthesizing the corner member sectional dimension information output from the first data processing device and the corner member corner curvature dimension information input by the host computer by the image processing device. CRT always dimension and shape of square member
indicate.

Furthermore, by comparing the above-mentioned square member cross-section dimension output with the square member cross-section allowable dimension information and allowable transport shake information input by the host computer, normal cross-section dimension output, cross-section abnormal output and normal transport shake are obtained. Outputs and abnormal conveyance shake output.

[0014]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a structural and functional explanatory diagram, and FIG. 2 is a block diagram. In FIG. 1, 1 is a corner member, 7a, 7b,
Reference numerals 7c and 7d denote the swinging ranges of the corner members, and 8a and 8b denote CCD cameras having the viewing angles 9a and 9b.
Reference numerals a and 10b are parallel light sources having the light projecting directions shown in 11a and 11b, and 12 is arranged on the same plane of the corner member 1 in the transport orthogonal direction, and the CCD camera 8 and the parallel light source 1 are arranged.
This is a CCD unit equipped with two sets of 0s. The corner member 1 detected by the CCD unit 12 in FIG.
The first position data signal processing 13 has a function of performing a cross-sectional dimension output 5 and a center coordinate output 6 of the corner member 1 being conveyed by arithmetic processing with the corner member longitudinal direction distance signal 14 supplied from the outside. It is a square member shape measuring device including a device 15.

In the angular member shape measuring device constructed as described above, when the angular member 1 enters the CCD unit 12, the parallel light source 10 and the angular member having a width of the carrier deflection range 7 or more. CC with a viewing angle of 7 or more
The D camera 8 detects the position signal 13 of the corner member. The detected signal is sent to the first data processing unit 15 together with the corner member longitudinal direction distance signal 14 supplied from the outside, and is subjected to arithmetic processing to perform the cross-sectional dimension output 5 and the center coordinate output 6 of the corner member 1. .

Example 2. 3 and 4 are views showing another embodiment of the present invention. In the figure, two CCD units 2a and 12b having the same function are arranged at arbitrary intervals, and center coordinate outputs 6a and 6b of the corner member 1 at respective positions are performed. The distance 16 between the center coordinate outputs 6a and 6b detected as described above and the predetermined two equations 16
For example, a corner formed by the second data processing device 20 having a function of outputting the tip center coordinate output 19 of the corner member 1 at an arbitrary distance 18 after passing through the CCD unit 12 by calculating and It is a member shape measuring device.

In the corner member shape measuring device configured as described above, the corner member 1 has two sets of CCD units 12a and 12a.
When passing b, the center coordinate output 6a, 6b of the corner member at each position is performed. The coordinate positions 6a and 6b, a predetermined distance 16 between the two equations, and an arbitrary distance 18 from the CCD unit 12b are sent to the second data processing device 20 and are subjected to arithmetic processing, whereby the corner member 1 is processed. The tip center coordinate output 19 is performed.

Example 3. FIG. 5 is a diagram showing another embodiment of the present invention. In addition to the CCD unit 12 and the first data processing device 15 that perform the same operations as in the first embodiment, the cross-sectional dimension output 5 output from the above data processing device and the corner member corner curvature dimension input from the host computer The image processing device 22 for synthesizing the information 21 and performing image processing, and the angular member shape output 23 output from the image processing device 22 are used as the CRT 2
4 is a corner member measuring device having a function of displaying in FIG.

The corner member shape measuring device configured as described above performs the following operation in addition to the operation shown in the first embodiment. Section size output 5 output from the first data processing device 15
Is an image processing device 22 that performs a combined arithmetic processing of the corner member corner curvature dimension information 21 to continuously output the corner member shape output 23 to the CRT 24 in real time in a continuous manner with respect to the sectional size and the carrying position of the corner member. To do.

Example 4. FIG. 6 is a diagram showing another embodiment of the present invention. In addition to the CCD unit 12 and the first data processing device 15 that perform the same operations as in the first embodiment, the cross-sectional dimension output 5 output from the above data processing device and the square-member cross-section allowable dimension information input from the host computer 25 and the square member conveyance allowable dimension shake information 26 are compared to each other, and the square member shape measuring device is provided with a comparison device 31 for performing a normal cross section dimension output 27, a cross section dimension abnormal output 28, a normal transport shake output 29, and a normal shake shake output 30. Is.

The square member shape measuring device configured as described above performs the following operation in addition to the operation shown in the first embodiment. Section size output 5 output from the first data processing device 15
And the corner member allowable dimension information 25 are compared with each other by the comparison device 31, and if the range is within the range, the cross-section dimension normal output 27 is output, and if it is out of the range, the cross-section dimension abnormal output 28 is performed. The comparison device 31 compares the ranges of the cross-sectional dimension output 5 and the corner member permissible conveyance dimension deviation information 26, and if they are within the range, the conveyance deviation normal output 2
If 9 is out of the range, the conveyance shake abnormality output 30 is performed.

[0022]

As described above, according to the present invention, the following effects can be obtained. (1) Compared with the conventional square member shape measuring device, the number of constituent parts is small and the structure is simple, so that the assembly is easy and the measurement accuracy is high. (2) Since the center coordinates of the tip of the corner member can be known, it is also effective as a sensor of a copying apparatus of a nondestructive inspection device. (3) Since the cross-sectional size of the corner member can be monitored by CRT,
It is effective for operation management of mill equipment. (4) Since the cross-sectional dimensions can be known, it is effective as an abnormal material detection device for nondestructive inspection equipment, and the reliability of nondestructive inspection data can be improved.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram of a corner member shape measuring device showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a signal flow of the corner member shape measuring apparatus according to the first embodiment.

FIG. 3 is a diagram showing a second embodiment of the present invention and showing a schematic structure at the time of outputting tip center coordinates.

FIG. 4 is a block diagram showing a signal flow of the second embodiment.

FIG. 5 is a block diagram showing a signal flow during CRT display according to the third embodiment of the present invention.

FIG. 6 is a block diagram showing a signal flow at the time of detecting an abnormal material according to the fourth embodiment of the present invention.

FIG. 7 is a view showing a schematic structure of a conventional corner member shape measuring device.

FIG. 8 is a block diagram showing a signal flow of the corner member shape measuring device.

[Explanation of symbols]

 1 Corner member 2 Sensor 3 Amplifier 4 Arithmetic device 5 Cross-sectional dimension output 6 Center coordinate output 7 Transport shake range 8 CCD camera 9 Viewing angle 10 Collimated light source 11 Projection direction 12 CCD unit 13 Position signal 14 Corner member longitudinal direction distance signal 15 First data processor 16 Distance between two CCD units 17 Straight line connecting two CCDs 18 Arbitrary distance from CCD unit 19 Tip center coordinate output 20 Second data processor 21 Corner member corner curvature dimension information 22 Image processing device 23 Square member shape output 24 CRT 25 Square member cross-section allowable dimension information 26 Square-member transport allowable run-out information 27 Cross-section dimension normal output 28 Cross-section dimension abnormal output 29 Transport run-out normal output 30 Transport run-out abnormal output 31 Comparison device

Claims (4)

[Claims] 1. In a line for conveying a square member such as steel or aluminum to be fed by diamond, the two sides of the four sides of the square member in an arbitrary plane orthogonal to the conveying direction of the square member are adjacent to each other. A CCD camera vertically arranged at a position having a viewing angle that is equal to or larger than the conveyance shake range of the corner member, and a CCD camera that is disposed opposite to the CCD camera sandwiching the corner member and that is larger than the conveyance shake range of the corner member. A light source that emits parallel light having a width, a position signal that is a pixel signal that is output from a CCD camera, and an angular member longitudinal direction distance signal that is supplied from the outside are arithmetically processed, and the angular member that is being conveyed. 1st to output the center coordinates of the
An apparatus for measuring the shape of a square member, comprising: 2. Two corner member shape measuring devices having the above-mentioned function are arranged at arbitrary intervals, and the center coordinate output of the corner member at each position and the predetermined distance between the two formulas are set. 2. The angular member shape measuring device according to claim 1, further comprising a second data processing device for performing a calculation process for outputting the angular member tip coordinate at an arbitrary position after passing through the angular member measuring device. 3. An image processing device for performing image processing by synthesizing corner member cross-sectional dimension output output from a first data processing device and corner member corner curvature dimension information input from a host computer, and The angular member shape measuring device according to claim 1, further comprising a function of displaying an angular member shape output output from the image processing device on a CRT. 4. A cross section normal output, a cross section abnormal output and a square member cross section allowable dimension information and a corner member allowable transport shake information input from a host computer are compared with the square member cross section dimension output by a comparison device. The square member shape measuring device according to claim 1, further comprising: a normal conveyance shake output and a abnormal conveyance shake output means.