CN114544208A - Ultrasonic welding machine stability detection device and method - Google Patents
Ultrasonic welding machine stability detection device and method Download PDFInfo
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- CN114544208A CN114544208A CN202111299961.3A CN202111299961A CN114544208A CN 114544208 A CN114544208 A CN 114544208A CN 202111299961 A CN202111299961 A CN 202111299961A CN 114544208 A CN114544208 A CN 114544208A
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- 238000003466 welding Methods 0.000 title claims abstract description 155
- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 241001580947 Adscita statices Species 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 238000013112 stability test Methods 0.000 claims 1
- 238000012430 stability testing Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010073 coating (rubber) Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000001883 metal evaporation Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a device and a method for detecting the stability of an ultrasonic welding machine, which comprise a soft film (3), a metal belt (4), a welding head (1) and a welding seat (2), wherein welding teeth are arranged on the welding head (1) and the welding seat (2), and when static detection is carried out, the soft film (3) is placed between the welding head (1) and the welding seat (2), so that the welding teeth leave traces on the soft film (3), and whether the traces are uniformly distributed or not is observed, so that whether the equipment is installed or not is judged; when the dynamic detection is carried out, the metal belt (4) is placed between the welding head (1) and the welding seat (2), and whether the depth of each welding tooth mark on the metal belt (4) is the same or not is observed after the welding is finished, so that whether the welding machine has problems or not is judged. The device further comprises a tool for clamping the test sample. The invention provides a device and a method for detecting the stability of an ultrasonic welding machine, which have the advantages that the detection method is convenient; the operation is convenient; the observation is clear and obvious; the observation cost is low; the consistency of the detected sample is good, and the like.
Description
Technical Field
The invention relates to a method for detecting the stability of a welding machine, in particular to a device and a method for detecting the stability of an ultrasonic welding machine.
Background
The ultrasonic welding machine is provided with a 'Test' function, when welding is carried out, the no-load stability (no-load loss power is less than 5% (loss power/welding machine rated power)) of an ultrasonic triple-unit system (an energy converter, an amplitude modulator and a welding head) is tested, but the actual stable condition cannot be ensured by combining with the actual welding working condition, and when the installation of the equipment is in a problem or the ultrasonic welding machine is in a problem, the actual welding effect can be influenced even if no problem is displayed by the 'Test' function, so that a detection method is needed, the installation of the equipment and whether the ultrasonic welding machine has a problem or not can be detected before batch welding is carried out, and the quality of a final product is not influenced.
Chinese patent application publication No. CN106271022B, published as 2019, 05 and 10, entitled "ultrasonic welding machine and ultrasonic welding control method thereof", discloses an ultrasonic welding machine and ultrasonic welding control method thereof; the ultrasonic welding machine comprises a rack, a main controller, an ultrasonic welding mechanism, a first workpiece pressing and fixing mechanism, a first CCD camera shooting mechanism, a second workpiece pressing and fixing mechanism and a second CCD camera shooting mechanism; the ultrasonic welding mechanism comprises a transverse translation mechanism, a vertical lifting mechanism and an ultrasonic welding head; the first workpiece pressing and fixing mechanism comprises a first longitudinal translation mechanism and a first rotating platform; the second workpiece pressing and fixing mechanism comprises a second longitudinal translation mechanism and a second rotating platform; has the advantages that: the ultrasonic welding mechanism can weld the workpiece on the first rotary platform and weld the workpiece on the second rotary platform in sequence, and the operation is repeated in such a circulating way, namely the invention can work uninterruptedly, so that the welding efficiency can be greatly improved. But the device is more complex in construction.
Disclosure of Invention
The invention provides the device and the method for detecting the stability of the ultrasonic welding machine, aiming at solving the problem that the prior art does not have equipment for detecting the installation condition of the ultrasonic welding machine or a detection device is complex, and the device and the method have the advantages of convenience in detection, good detection effect and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device and a method for detecting the stability of an ultrasonic welding machine are characterized by comprising a flexible film 3, a metal strip 4, a welding head 1 and a welding seat 2, wherein the welding head 1 and the welding seat 2 are provided with welding teeth;
further comprising the steps of:
a. static detection: the soft film 3 is placed between the welding head 1 and the welding seat 2, the welding head 1 and the welding seat 2 press the soft film 3 by setting air pressure, welding teeth leave traces on the soft film 3, and whether the traces are uniformly distributed or not is observed so as to judge whether equipment is in a problem or not;
b. dynamic detection: the metal belt 4 is placed between the welding head 1 and the welding seat 2, small parameters are adopted for welding, and whether the depth of each welding tooth mark on the metal belt 4 is the same or not is observed after welding is finished, so that whether the welding machine has problems or not is judged.
In the technical scheme, the detection of the stability of the ultrasonic welding machine is divided into two parts, firstly, static detection is carried out, the soft film 3 is placed between the welding head 1 and the welding seat 2 under the condition that welding is not carried out, the soft film 3 is pressed between upper welding teeth and lower welding teeth in a mode of setting air pressure, after the soft film is compressed, welding tooth marks on the soft film 3 are observed, if the welding tooth marks are uniformly distributed, the problem of equipment installation is solved, if the condition that the welding tooth marks are non-uniformly distributed, the problem of equipment installation or screws are loosened is explained, and the flatness of the equipment in the x direction and the y direction can be specifically judged according to the weight of the marks on the soft film 3. After the static detection is finished, dynamic detection is carried out, the metal belt 4 is placed between the welding head 1 and the welding seat 2, small parameters are adopted for welding, the depth of each welding tooth mark on the metal belt 4 is observed after the welding is finished, if the welding tooth marks are smooth, the welding machine has no problem, if the welding tooth marks are uneven, the welding machine has problems, and the batch production of products cannot be carried out.
Preferably, the step a, the static detection and the step b, the dynamic detection are not in sequence, the step a, the static detection and the step b, the step b and the step c can be carried out first, and the steps are independent of each other, so that the detection is more convenient.
Preferably, an observation platform 5 is provided, the observation platform 5 comprises a parallel light source 6, a projection plate 7 and a rotating platform 8, the welded metal strip 4 can be placed on the rotating platform 8 during dynamic detection, whether the depth of each welding tooth mark on the metal strip 4 is the same or not is judged by observing whether the light spot distribution of the parallel light source 6 irradiated on the metal strip 4 and reflected on the projection plate 7 is uniform or not, and then the stability of the ultrasonic welding machine is judged, if the depth of each welding tooth mark on the metal strip 4 is the same, the distance of each light spot on the projection plate 7 is also the same, if the depth of each welding tooth mark on the metal strip 4 is different, the distance of each light spot on the projection plate 7 is also different, the rotating platform 8 can observe the metal strip 4 from different angles, so that the observation result is more accurate, the difference of each welding tooth mark can be amplified by the mode, and the device has a simple structure, is convenient for observation.
Preferably, the parallel light source 6 is disposed opposite to the projection plate 7, and the rotation stage 8 is disposed between the parallel light source 6 and the projection plate 7 to facilitate the light to irradiate the metal strip 4 and then reflect to the projection plate 7.
Preferably, the turntable 8 is provided with fixing means for fixing the metal strip 4 to the turntable 8.
Preferably, the surface of the metal strip 4 subjected to the b. dynamic inspection except for the weld tooth mark is subjected to a roughening treatment by sandpaper, and metal evaporation is carried out on the welding tooth print position, the parallel light source 6 irradiates the metal strip 4, not only the reflection is generated at the welding tooth print position, reflection is generated on the surface of the metal strip 4, and the reflected light is displayed on the projection plate 7, the observation is greatly disturbed, the surface of the metal belt 4 except the welding tooth print is roughened, the light can only reflect at the welding tooth print, the surface of the metal belt 4 except the welding tooth print can only diffuse reflection, carry out metal coating by vaporization to welding tooth seal department, guarantee to weld tooth seal department and can carry out specular reflection, only shine the light that produces specular reflection on welding tooth seal can reach projection board 7 finally, and the operation of roughening is eliminated and is disturbed and let the observation result more accurate.
Preferably, the used flexible film 3 is an aluminum plastic film, the aluminum plastic film is soft in material, low in cost and common in use, and the flexible film can be used for static test to display imprinting and is convenient for judging a test result.
Preferably, the flexible film 3 used is a pressure-sensitive paper which is white and shows red color when subjected to pressure, and the pressure distribution can be more visually shown by performing a static test using the pressure-sensitive paper.
Preferably, the metal belt 4 is a copper belt, the ultrasonic welding machine can generate a temperature of 500 ℃ to 525 ℃ during welding, if the metal belt 4 with a lower melting point is used for dynamic test, the metal belt 4 can be melted and adhered to a welding head or a welding seat, the melting point of the copper belt is higher, the problem cannot be caused, and the copper material is convenient to obtain.
The invention has the beneficial effects that: (1) the detection method is convenient; (2) the observation is clear and obvious; (3) the observation cost is low.
Drawings
FIG. 1 is a schematic illustration of a static detection configuration of the present invention;
FIG. 2 is a schematic diagram of the dynamic detection architecture of the present invention;
FIG. 3 is a schematic view of the structure of the observation stage of the present invention;
FIG. 4 is a top view of the viewing platform structure of the present invention;
FIG. 5 is a schematic view of a clamping film of the welding detection device of the present invention;
FIG. 6 is a schematic view of the welding detection device of the present invention clamping a metal strip.
In the figure: the device comprises a welding head 1, a welding seat 2, a soft film 3, a metal belt 4, an observation platform 5, a parallel light source 6, a projection plate 7, a rotating platform 8, a mirror surface 9, a buckling clamp 10, a handle 11, an upper buckling plate 12, a lower buckling plate 13, a test sample position 14 and a rubber coating piece 15.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and 2, the device and method for detecting the stability of the ultrasonic welding machine comprises a flexible film 3, a metal belt 4, a welding head 1 and a welding seat 2, wherein welding teeth are arranged on the welding head 1 and the welding seat 2, the flexible film 3 is an aluminum plastic plate or pressure-sensitive paper, and the metal belt is a copper belt.
In the technical scheme, when static detection is carried out, the soft film 3 is placed between the welding head 1 and the welding seat 2, the soft film 3 is pressed by setting air pressure, welding teeth leave traces on the soft film 3, whether the traces are uniformly distributed is observed, whether equipment installation has problems is judged, if the welding teeth are uniformly distributed, the equipment installation has no problems, if the welding teeth are non-uniformly distributed, the equipment installation problems or screws are loosened, and the flatness of the equipment in the x direction and the y direction can be specifically judged according to the weight of the traces on the soft film 3; when dynamic detection is carried out, the metal belt 4 is placed between the welding head 1 and the welding seat 2, small parameters are adopted for welding, and whether the depth of each welding tooth mark on the metal belt 4 is the same or not is observed after welding is finished, so that whether the welding machine has problems or not is judged. The mantle 3 that uses is plastic-aluminum membrane or pressure-sensitive paper, and the plastic-aluminum board material is soft, and is with low costs, and pressure-sensitive paper pressurized discolours, and the effect is obvious, and the strap 4 that uses is the copper strips, and the melting point of copper is high, can not glue on bonding tool 1 or welding seat 2 because of melting when the welding, and the convenience of drawing materials.
Example 2:
as shown in fig. 5 and fig. 6, based on embodiment 1, a welding detection apparatus is designed, which includes an upper fastening plate 12, a fastening clip 10, a handle 11, a rubber coating 15, a test sample site 14, and a lower fastening plate 13, wherein the surface of the lower fastening plate 13 is roughened, and the roughening treatment can be performed by: the welding teeth are designed by electric spark, chemical etching or machinery, the upper buckling plate 12 is encapsulated by silica gel or foam cotton with gum attached to the surface.
In the technical scheme, when static and dynamic detection is carried out, a sample (a flexible film 3 or a metal belt 4) is placed at a test sample position 14 on a lower buckling plate 13, an upper buckling plate 12 is buckled, a buckling clamp 10 is locked, then a handle 11 is manually held, and the sample and the whole welding detection device are moved to a proper test position between a welding head 1 and a welding seat 2 of a welding machine to be pressed or welded. The surface of the lower buckling plate 13 is roughened, so that a sample can be stably clamped, the upper buckling plate 12 is encapsulated by silica gel or foam cotton with gum attached to the surface, and when pressure is applied, the soft film 3 can be tightly fixed and attached and the clamping is more stable. The welding detection device is adopted for clamping operation, so that the problem that different test results are caused due to different sample placing positions caused by operation of different personnel can be avoided, the welding part of the welding machine does not need to be contacted by the operator in a short distance, and the safety of the operator is protected.
Example 3:
as shown in fig. 3, in addition to embodiment 1, an observation stage 5 is provided, the observation stage 5 includes a collimated light source 6, a projection plate 7 and a rotary table 8, the collimated light source 6 is disposed opposite to the projection plate 7, the rotary table 8 is disposed between the collimated light source 6 and the projection plate 7, the rotary table 8 is provided with a fixing device, the surface of the metal strip 4 subjected to the b. dynamic detection, excluding the welding tooth mark, is roughened by a sand paper, and the welding tooth mark is subjected to metal deposition.
In the technical scheme, the metal strip 4 subjected to the b-stage dynamic detection is more accurately observed, the specific observation method comprises the steps of fixing the welded metal strip 4 on a rotating table 8, turning on a parallel light source 6, irradiating light rays onto welding tooth prints on the metal strip 4 and reflecting the welding tooth prints onto a projection plate 7, judging whether the depths of the welding tooth prints are different or not by observing the light spot distribution on the projection plate 7 as the surfaces of the metal strip 4 except the welding tooth prints are roughened and the metal evaporation is carried out on the welding tooth prints, so that the surfaces of the metal strip 4 except the welding tooth prints cannot reflect the light rays onto the projection plate 7, judging whether the depths of the welding tooth prints are different or not by observing the light spot distribution on the projection plate 7, judging that the depths of the corresponding welding tooth prints are different if the light spots are uniformly distributed, observing the metal strip 4 from various angles by rotating the rotating table 8, the observation result is more accurate, if the light spot distance on the projection plate 7 is too small, the observation is inconvenient or unobvious, the distance between the projection plate 7 and the rotating platform 8 can be adjusted, a concave lens can be arranged on the path of the parallel light source 6 irradiating the metal belt 4 or the path of the light reflected to the projection plate 7 from the metal belt 4, the light spot distance is enlarged, the depth difference of each welding tooth mark is further enlarged, and the observation is convenient.
Example 4:
as shown in fig. 4, in example 3, a plurality of mirror surfaces 9 are provided on the observation stage 5, and the mirror surfaces 9 are distributed obliquely.
Among the above-mentioned technical scheme, if shine the light spot distribution on projection board 7 still observe difficulty or unclear, can set up a plurality of mirror surface 9, mirror surface 9 slope distributes, the purpose is in order to increase the distance that light arrived the projection board through the reflection of a plurality of slope mirror surface 9 from the light that metal band 4 welded tooth seal department reflection come, final reflection is to projection board 7 on, because the distance increase of light arrival projection board 7, the distance between the light spot can be bigger, more do benefit to the observation, increase the distance that light arrived projection board 7 with this kind of mode simultaneously, need not increase the distance between projection board 7 and the revolving stage 8, can save the space that observation platform 5 occupy.
The invention has the beneficial effects that: (1) the detection method is convenient; (2) the observation is clear and obvious; (3) the observation cost is low.
Claims (9)
1. A device and a method for detecting the stability of an ultrasonic welding machine are characterized by comprising a soft film (3), a metal belt (4), a welding head (1) and a welding seat (2), wherein welding teeth are arranged on the welding head (1) and the welding seat (2);
further comprising the steps of:
a. static detection: the soft film (3) is placed between the welding head (1) and the welding seat (2), the welding head (1) and the welding seat (2) press the soft film (3) through setting air pressure, welding teeth leave traces on the soft film (3), whether the traces are uniformly distributed or not is observed, and whether equipment installation has problems or not is judged;
b. dynamic detection: the metal belt (4) is placed between the welding head (1) and the welding seat (2), small parameters are adopted for welding, and whether the depth of each welding tooth mark on the metal belt (4) is the same or not is observed after welding is finished, so that whether the welding machine has problems or not is judged.
2. The ultrasonic welding machine stability detection device and method as claimed in claim 1, wherein the step a, static detection and the step b, dynamic detection are not in sequence.
3. The ultrasonic welder stability detection device and method according to claim 1, characterized by comprising a viewing platform (5), wherein the viewing platform (5) comprises a parallel light source (6), a projection plate (7) and a rotating platform (8).
4. The ultrasonic welding machine stability detection device and method according to claim 2, wherein the collimated light source (6) is disposed opposite to the projection plate (7), and the rotary table (8) is disposed between the collimated light source (6) and the projection plate (7).
5. The ultrasonic welding machine stability detection device and method according to claim 2, characterized in that the rotating table (8) is provided with a fixing device.
6. The ultrasonic welding machine stability detection device and method according to claim 1, 2, 3 or 4, characterized in that the surface of the metal strip (4) after b.
7. An ultrasonic welder stability testing device and method according to claim 1 or 2 or 3 or 4, characterized in that the soft film (3) used is an aluminium plastic film.
8. An ultrasonic welder stability test device and method according to claim 1 or 2 or 3 or 4, characterized in that the flexible film (3) used is a pressure sensitive paper.
9. The ultrasonic welder stability detection device and method according to claim 2 or 3 or 4, characterized in that the metal strip (4) used is a copper strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299961.3A CN114544208A (en) | 2021-11-04 | 2021-11-04 | Ultrasonic welding machine stability detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111299961.3A CN114544208A (en) | 2021-11-04 | 2021-11-04 | Ultrasonic welding machine stability detection device and method |
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| CN114544208A true CN114544208A (en) | 2022-05-27 |
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2021
- 2021-11-04 CN CN202111299961.3A patent/CN114544208A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1839671A (en) * | 2004-03-15 | 2006-09-27 | 松下电器产业株式会社 | Method and equipment for inspecting mounting accuracy of component |
| TW201441604A (en) * | 2013-04-25 | 2014-11-01 | Hon Hai Prec Ind Co Ltd | System and method for detecting shape flaw |
| CN107850422A (en) * | 2016-05-23 | 2018-03-27 | 新日铁住金株式会社 | Shape measuring apparatus and process for measuring shape |
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