JP2869003B2 - Thin plate surface roughness measuring device and laminated state detecting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for measuring the surface roughness of a thin steel sheet, which can achieve automation of a surface roughness test of the thin steel sheet.

[0002]

2. Description of the Related Art Conventionally, press formability of thin steel sheets has been improved.
Because of the great influence of the surface properties on the coating film sharpness and the like, there is a high need for a two-dimensional surface roughness process shipping test, especially for automobile users. On the other hand, conventionally, since the surface roughness measurement was manually performed, skill was required to increase the test accuracy, and much labor and time were required. For this reason, recently, attempts have been made to automate the surface roughness measuring device.

[0003]

However, when the measurement of the two-dimensional surface roughness of a thin steel plate is automated, if the size of the test piece is different, a shape error occurs due to a burr or warpage of the end face of the test piece, or the test piece is dispensed. In addition, there are many problems in measuring standard pieces, and there is a problem that practical use is difficult.

[0004] The present invention, wherein those solve such conventional problems, differences or specimen size, the end of the test piece
An object of the present invention is to provide a technique for measuring the surface roughness of a thin steel sheet, which can achieve automation of the surface roughness test of the thin steel sheet irrespective of surface burrs and warpage .

The present invention relates to an apparatus for measuring the surface roughness of a thin plate.
Te, a test strip supply means for supplying a test piece, and the standard piece housing means for housing a material measure for use in the measurement, the test piece or
Scan the surface of the standard piece in one or two dimensions
Tilt adjustment to correct the tilt of the test piece to measure the shape
It has a mechanism to perform pre-scanning and to minimize the inclination of the test specimen measurement surface.
The test piece is obtained by the small square method, and the tilt adjustment mechanism is used.
Slope on corrected for the, a measuring unit for performing the scanning, measurement
And dispensing means to dispensing the test piece after completion of the test piece supplied from the specimen supply section gripped, <br/> a robot having a robot hand for moving the specimen into the respective means , at least the test strip supply means, a material measure housing means and measuring means, the arrangement to isosamples along the pivot trajectory of each of the robot hand, is also <br/> had achieved the above object.

According to the present invention, preferably, the measuring means absorbs the test piece.
It has a function to draw and fix it on the receiving table surface,
If suction is not confirmed, do not perform suction.
By doing so, the above-mentioned object is also achieved.
The present invention also relates to a measuring apparatus, wherein
By having a base surface, the above-mentioned object is also achieved.
It is. In the present invention, the measuring means may include a stylus type surface roughness.
The standard piece storage means has a height magnification.
Confirmation of two-axis scale calibration standard piece and stylus wear degree
Achieve the same purpose as above by juxtaposing standard pieces
It was done . The present invention further provides a stacking apparatus for stacking and storing test pieces determined to be defective as a result of the measurement .
A light source having an optical axis that forms a predetermined angle of inclination with a plate surface,
A plurality of light-shielded lights arranged side by side in the stacking direction by the stack height
An electric sensor and a window serving as an optical path of the photoelectric sensor are provided on both sides.
And, storage means and a carrier shell ceiling and the front is open, by this <br/> and be disposed on a pivot trajectory of the robot hand, is obtained by achieving the aforementioned object.

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

[0013]

The present invention is also directed to an apparatus for detecting the state of lamination of thin plates.
Light having an optical axis forming a predetermined angle of inclination with the plate surface to be laminated
Sources and multiple sheets arranged side by side in the stacking direction by the stacking height
A light-shielding photoelectric sensor and a window serving as an optical path of the photoelectric sensor.
It has a ceiling and a frame with an open front, which is on both sides.
By obtaining, to accurately detect the stack height of the sheet
Is made possible .

[0015]

[0016]

According to the present invention, at least a test piece supply means,
Since the standard piece storing means, the measuring means and the payout means are respectively arranged along the turning trajectory of the robot hand, the robot hand receives the test piece from the test piece supply means and moves the test piece to the measuring means. When performing a series of operations to move the test piece to the dispensing means, or take out a standard piece from the standard piece storage means and move it to the measuring means, measure the standard piece, When the work of returning the standard piece to the standard piece storage means is performed again, the movement of the robot hand can be reduced, so that a series of these operations can be performed efficiently. Automation and labor saving can be easily achieved. In particular, the measuring means
Has a tilt adjustment mechanism to correct the tilt of the test piece.
Measurement enables accurate measurement regardless of the condition of the test piece.
Noh. In addition, during measurement, a preliminary scan is performed to measure the test piece.
Obtain the slope of the fixed surface by the least squares method, and calculate the slope of the test piece.
The main scanning is performed after correcting the
Degree measurement is possible. Further, the measuring means absorbs the test piece.
It has a function to draw and fix it on the receiving table surface,
Even if suction is not confirmed, do not perform suction.
If the test piece is bent and bent,
Be able to withstand vibration of stylus pressure
The test table with sufficient rigidity and the measuring table
When the suction is continued, the vibration of the specimen due to the suction air flow is
Can be prevented. Further, the measuring means is provided on the back of the test piece.
If you have a cradle surface smaller than
The test piece is securely received without being affected by burrs on one end.
It can be fixed on a table. Further, the measuring means is
Needle type surface roughness measurement shall be performed, and said standard piece storage means
Is a standard piece for biaxial scale calibration for height
When two of the standard pieces for checking the degree of needle wear are placed side by side
By regularly measuring the standard piece,
Measurement accuracy can be kept constant.

Further , when the storage means for stacking and storing the test pieces determined to be defective as a result of the measurement is arranged on the swivel path of the robot hand, the work of separating the defective test pieces is performed. Can be performed efficiently, and the defective test piece can be stored separately from the payout means, so that the retest can be easily performed.

[0018] Further, in the storage means, a storing portion of the test piece was laminated, when a carrier shell ceiling and the front is open, it is easy to remove.

The transport frame has windows on both sides, and irradiates light at a predetermined angle to the plate surface to be laminated from the windows, and detects the stacking height of the test pieces by a light-shielding photoelectric sensor. If this is set, the stacking height of the test piece must be accurately detected.
In addition to the above, when storing the test piece determined to be defective as a result of the measurement in the storage means by the robot hand,
The test piece can be gently dropped from an appropriate height above the stacked test pieces, and damage to the test piece can be prevented.

[0020]

[0021]

[0022]

[0023]

[0024]

[0025]

[0026]

[0027]

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view schematically showing an entire surface roughness measuring apparatus according to one embodiment of the present invention.

This apparatus was manufactured by Myojin Koki Co., Ltd. and Japan Technology Center Co., Ltd.

In FIG. 1, reference numeral 10 denotes a surface roughness measuring apparatus according to the present embodiment, which is entirely covered with an acrylic cover so that dust and the like do not enter from the periphery. Reference numeral 12 denotes a robot that moves the test piece, 14 denotes a test piece input unit that supplies the test piece, 16 denotes a measuring unit, 18 denotes a measuring device, and 20 denotes a vibration isolation table that prevents vibration. Reference numeral 22 denotes an OK stocker for dispensing a test piece determined to be good (OK) as a result of the measurement, and reference numeral 24 denotes an NG stocker for dispensing a test piece determined to be poor (NG) as a result of the measurement. Reference numeral 26 denotes a standard piece storage unit, and the standard pieces stored therein are measured periodically. Reference numeral 28 denotes a microcomputer for controlling the measurement apparatus.

FIG. 2 is a flowchart showing the flow of the processing of the surface roughness measurement test according to this embodiment.

Hereinafter, the processing of the measurement test will be described in detail with reference to this flowchart.

In step 100 of FIG. 2, a test piece to be subjected to a measurement test is registered. Step 102
Then, the microcomputer 28 operates the microcomputer 28 to set test conditions and the like.
Set to 4.

The test piece loading section 14 has a configuration as shown in FIG. 3 and is configured to horizontally stack and set the test pieces 30 in a size determining guide 32. By turning the decision handle 34,
The position can be changed according to the size of the test piece.

The above operation is manually performed manually. When the microcomputer 28 instructs the start of the test in the next step 106, the processing is automatically performed thereafter by the control of the microcomputer 28.

In step 108, the test piece is transported from the test piece loading section 14 to the measuring section 16 by the robot 12. Specifically, in FIG.
The uppermost sheet is sucked and lifted by the suction board 36, and the robot 12 grips and transports the lifted test piece 30. At this time, the top sheet is lifted by the repulsion of the magnetic force by the magnet floater 38 so as not to lift the two sheets together. Also, the presence or absence of the test piece is confirmed by a photoelectric sensor (not shown).

As shown in FIG. 4, the robot 12 has a robot hand 12B at the tip of an arm 12A, and each part can freely rotate as shown by an arrow in the figure. FIG. 2 is an enlarged view of the robot hand 12B. The urethane rubber 12C is press-fitted into the hand portion.
The structure is such that the test piece does not drop when transporting or reversing the test piece.

When the test piece is conveyed to the measuring section 16 and placed on the measuring table, in the next step 110, the test piece is fixed on the measuring table by vacuum suction. At this time, since the measuring table is designed to be smaller than the minimum test piece size, the end of the test piece is not affected by burrs.

FIG. 5 shows the configuration of the measuring section 16. Measuring table 4
The vacuum suction ports 42 are arranged in two rows of five on the surface 0, and the center hole is larger than the others. Therefore, the test piece is securely fixed by suction. Also, the presence or absence of the test piece is confirmed by the proximity switch 44.

FIG. 6 is a sectional view showing the state of vacuum suction of the test piece. The measuring table according to the present embodiment has a function of holding a test piece by vacuum suction in order to stably measure a thin plate having low rigidity.

When the bent test piece 30 is placed on the measuring table 40, a state shown in FIG. 6A or 6B is obtained. If the roughness measurement is performed in this state, the vibration due to the measurement needle pressure may adversely affect the measurement accuracy for a test piece having a small rigidity. Therefore, when vacuum suction is applied from the vacuum suction port 42 formed on the measurement table 40, the test piece 30 adheres to the measurement table 40 as shown in FIG. be able to.

If a thick test piece does not adhere to the measuring table as shown in FIG. 4C even when vacuum suction is applied, it is considered that the test piece has sufficient rigidity to withstand the vibration of the needle pressure. . If vacuum suction is continued while the test piece and the measuring table are not in close contact with each other, the air flow caused by the suction causes the test piece to vibrate, and the suction is confirmed by a vacuum switch (not shown).
If the suction confirmation signal does not turn on during vacuum suction, control is performed so that vacuum suction is turned off.

The measuring table 40 includes a rotary pulse stage 46.
In step 112, the measuring table 40 can be rotated by the rotating pulse stage 46 to change the measuring direction.

The stylus 1 at the head of the measuring instrument 18
At 8A, preliminary measurements are made and the data is processed by the least squares method. If the test piece is tilted, tilt correction is performed by the tilt stage 48 in step 114.

In step 116, a roughness measurement is performed. This is performed in an appropriate combination in the three directions of the vertical direction, the horizontal direction, and the diagonal direction based on the initial condition setting. The measurement is performed a plurality of times in the same direction at the same pitch by the Y-axis pulse stage 50.

After the measurement, a primary determination is made in step 118, and if OK, the process proceeds to step 120, where the result is displayed.
Printing and higher-order transmission are performed, and in step 122, the vacuum suction is released. Then, in step 124, the robot hand 12
B again holds and transports the test piece, and the OK stocker 2
2 and go to step 134.

On the other hand, if the determination in step 118 is NO, the process proceeds to step 126, and after displaying the result and printing, the vacuum suction is released in step 128. At step 130,
The test piece is held by the robot hand 12B, transported to the NG stocker 24, and collected for a retest.

The NG stocker 24 is, as shown in FIG. 7, a cassette 5 for stacking and storing test pieces on a cassette table 52.
4, the structure is easy to remove and move. Windows are opened on both sides of the cassette 54. The height of the stacked test pieces is detected by a light-shielding photoelectric sensor 56, and the test pieces are held by the robot hand 12B to an appropriate height (for example, 10 mm). And drop it without impact. At this time, if the optical axis of the photoelectric sensor 56 is horizontal, light may penetrate a gap formed between the test pieces due to burrs at the end of the test piece, and the correct height may not be detected. As shown, the photoelectric sensor 56 is disposed at a slight angle (for example, 10 °).

Further, the bottom surface of the cassette 54 is provided with an inclination θ so that the depth is lower, so that the test piece is slidably accommodated. In this embodiment, θ =
15 °.

Next, in step 132, it is determined whether or not the measurement of the first registered test piece has been completed. If any test piece remains, the process returns to step 108 to continue the measurement. Confirmation of whether or not the test piece still remains is performed by the photoelectric sensor of the test piece input unit 14.

When the measurement is completed for all the test pieces,
At step 134, it is checked whether or not there is a defective (NG) product. If there is, the process returns to step 102, and the defective product is measured again. When measuring an NG product, the Y-axis pulse stage 50 is moved +1.0 mm, and the measurement is performed in a slightly different place from the previous measurement.

If there is no NG product in the judgment at step 134, the test is terminated at step 136.

In order to keep the measurement accuracy constant, the measurement of the standard piece is performed periodically. The standard pieces are stored in the upper and lower tiers in the standard piece storage section 26 as shown in FIG. 8, the upper standard piece I 58 is for checking the magnification, and the lower standard piece II 60
Is for checking stylus wear. Also, with the photoelectric sensor,
The presence or absence of the standard piece is checked, and the entire area other than the outlet is covered with an acrylic cover to prevent dust and dirt from adhering to the reference surface.

The apparatus according to the present embodiment is manufactured by Myojin Koki Co., Ltd. and Japan Technology Center Co., Ltd.

The present invention is not limited to the above embodiment. For example, a method of holding a test piece by a robot hand may be vacuum suction, in addition to mechanical force. Also, the detection target of the lamination state is not limited to the test piece.
No.

[0057]

As described above, the surface roughness of the present invention is as follows.
According to the measurement technique , the surface roughness measurement can be automated, and there is an excellent effect that labor can be saved, efficiency can be improved, and measurement accuracy can be enhanced and stabilized. or,
According to the lamination state detection technology of the present invention, the lamination height of a thin plate is
Has an excellent effect of being able to detect accurately
You.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing the entire surface roughness measuring apparatus of the present embodiment.

FIG. 2 is a flowchart illustrating a flow of a process of measuring surface roughness according to the present embodiment.

Oblique view <br/> view showing the FIG. 3 arrangement of a test piece insertion portion according to the embodiment

Oblique view showing the robot according to the embodiment [4]

Oblique view showing the measuring unit according to FIG. 5 embodiment

FIG. 6 is a side view including a partial cross section showing a state of adsorption of a test piece in the measurement unit.

[7] oblique view showing the storing NG stocker re specimens of this embodiment

Oblique view showing the standard piece housing part according to this embodiment [Fig. 8]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Surface roughness measuring device 12 ... Robot 14 ... Test piece input part 16 ... Measuring part 18 ... Measuring instrument 20 ... Isolation table 22 ... OK stocker 24 ... NG stocker 26 ... Standard piece storage part 28 ... Computer (CPU)

Continuation of front page (56) References JP-A-2-38838 (JP, A) JP-A-53-105258 (JP, A) JP-A-2-184701 (JP, A) JP-A-2-249910 (JP, A) JP-A-53-105261 (JP, A) JP-A-60-76204 (JP, U) JP-A-48-91964 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB G01B 5/00-5/30 G01B 21/00-21/32

Claims (6)

(57) [Claims] 1. A test piece supply means for supplying a test piece, a standard piece storage means for storing a standard piece to be used for measurement, and a one-dimensional or two-dimensional scan of the surface of the test piece or the standard piece.
To correct the inclination of the test piece to measure the surface properties
It has a tilt adjustment mechanism, performs pre-scanning, and measures the test specimen
Is obtained by the least squares method, and the inclination adjustment mechanism
After correcting the inclination of the test piece, a measuring means for performing a main scan, a dispensing means for discharging the test piece after the measurement is completed , and a test piece supplied from the test piece supplying means is gripped, the a robot having a robot hand for moving the above means, at least the test strip supply means, that the material measure housing means and the measuring means are arranged respectively along the pivot trajectory of the robot hand Characteristic device for measuring surface roughness of thin plates. Wherein Oite to claim 1, wherein the measuring means, to suck the specimen have a function of adsorbing fixed to pedestal surface, suction
If suction is not confirmed even after performing, do not perform suction.
Surface roughness measuring apparatus of the sheet, characterized that you have been sea urchin. 3. The method of claim 1 or 2, wherein the measuring means, the surface roughness measuring apparatus of the sheet characterized by having a smaller pedestal surface specimen backside. 4. A any one of claims 1 to 3,
Said measuring means, and performs a stylus-type surface roughness measurement, the standard piece housing means, and two-axis scale calibration standard piece of high magnification for confirmation, the stylus wear degree confirmation target Junkata collocated An apparatus for measuring the surface roughness of a thin plate. 5. according to any one of claims 1 to 4,
Furthermore, as a result of the measurement, a test piece determined to be defective is laminated.
At a predetermined angle to the plate surface to be stacked for storage
A light source having an optical axis , in the test piece stacking direction, by the stacking height,
A plurality of light-shielding photoelectric sensors arranged in parallel, and the photoelectric sensors
Windows on both sides, the ceiling and front are open
And storage means comprising a carrier shell which is a surface roughness measuring apparatus of the sheet, characterized in that it is arranged on the turning trajectory of the robot hand. 6. An optical axis having an inclination angle with a plate surface to be laminated.
Light source and a plurality of light shields arranged side by side in the lamination direction
Type photoelectric sensor, and a window serving as an optical path of the photoelectric sensor on both sides, the ceiling and the front
Stacked state detecting device of the thin plate, characterized in that it and a frame body surface is open.