KR20180064102A - Inspection apparatus for welding tip of spot welding gun - Google Patents

Inspection apparatus for welding tip of spot welding gun Download PDF

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Publication number
KR20180064102A
KR20180064102A KR1020160164296A KR20160164296A KR20180064102A KR 20180064102 A KR20180064102 A KR 20180064102A KR 1020160164296 A KR1020160164296 A KR 1020160164296A KR 20160164296 A KR20160164296 A KR 20160164296A KR 20180064102 A KR20180064102 A KR 20180064102A
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South Korea
Prior art keywords
welding tip
welding
tip
inspection apparatus
camera module
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KR1020160164296A
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Korean (ko)
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KR101926635B1 (en
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정명환
장주용
전현환
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오토아이티(주)
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Priority to KR1020160164296A priority Critical patent/KR101926635B1/en
Priority to PCT/KR2017/009210 priority patent/WO2018105853A1/en
Publication of KR20180064102A publication Critical patent/KR20180064102A/en
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Publication of KR101926635B1 publication Critical patent/KR101926635B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/36—Auxiliary equipment
    • 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
    • G01N21/88—Investigating the presence of flaws or contamination
    • 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
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • 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
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0296—Welds

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The present invention relates to a welding tip inspection apparatus of a spot welding gun, inspecting a pollution level of a welding tip without causing damage to components even when the welding tip transferred by a welding tip transferring gun is inserted into and pressurized in a predetermined insertion position with an error of several millimeters. Moreover, the apparatus comprises: a pressure plate; a center guide unit; a cover case; and an upper housing and a lower housing.

Description

TECHNICAL FIELD [0001] The present invention relates to a welding tip inspection apparatus for a spot welding gun,

The present invention relates to an apparatus for inspecting a welding tip of a spot welding gun. More particularly, the present invention relates to an apparatus for inspecting a welding tip of a spot welding gun, To a welding tip inspection apparatus for a spot welding gun capable of inspection.

Generally, spot welding is a type of resistance welding technique in which two or three sheets of metal sheet for welding are stacked and placed between a pair of spot welding guns and pressed with a pair of spot welding guns A method of applying a current to a spot welding gun and welding a metal plate using resistance heat generated therefrom. Such spot welding is also called spot welding, but it is widely used for thine plate welding because of its advantage of short welding time.

In spot welding, part of the base material after welding is deposited on the tip of the spot welding gun, so that the spot welding gun can not be used for a long time. To prevent this, the spot welding gun is protected by attaching a welding tip of copper material to the end of the spot welding gun.

The condition of the welding tip is important for good quality welding to be performed. However, the welding tip tip is contaminated during 100 ~ 200 times of welding and can not be used. At this time, the end of the welding tip is polished by using a dresser (ATD: Auto Tip Dresser). Using a dresser (ATD), the tip of the contaminated welding tip is cut off and the welding tip inspection device is used to inspect the welding tip section for foreign matter. If the test result is bad, transfer the welding tip to the dresser (ATD) with the welding tip transfer gun (GUN) to polish the welding tip. Typically, the dresser (ATD) and the welding tip inspection apparatus are combined and installed in one package.

On the other hand, an inspection apparatus using a color sensor and an inspection apparatus using a camera have been known as a welding tip inspection apparatus. The inspection apparatus using the color sensor measures the spectrum of the light reflected on the end face of the welding tip after irradiating the white LED to judge whether or not the welding tip is contaminated. Although the measurement speed is fast, there is a problem that it can not be measured properly depending on the environmental part such as the distance and angle of the welding tip.

As shown in FIG. 9, an inspection apparatus using a camera disclosed in Korean Patent No. 10-1385922 (the name of the invention: spot welding electrode inspection apparatus) photographs a cross section of a welding tip with a 2D camera, It is judged whether or not the tip section is contaminated. 9, the apparatus for inspecting an electrode for spot welding according to Korean Patent No. 10-1385922 has a structure in which an electrode (welding tip) is fixed to a fixing hole 72a of an electrode fixing plate 72, And the cross section of the projected electrode (welding tip) is photographed by a CCD camera 91 supported by a plate-like camera base 92, 93.

However, the conventional spot welding electrode inspection apparatus is embodied such that the welding tip transporting gun inspects the welding tip by using the camera while feeding the welding tip and inserting it into the fixing hole 72a and pressing it. There arises a problem that when the welding tip is inserted or pressed in a state in which the welding tip is not correctly aligned with the fixing hole 72a, the part is damaged and the inspection is not performed.

Korean Registered Patent No. 10-1385922 (Registered on April 4, 2014)

The present invention has been made in view of the above background and it is an object of the present invention to provide a welding apparatus and a welding method for welding a welding spot, A welding tip inspection apparatus for a welding gun is provided.

The present invention also relates to a welding tip inspection apparatus for a spot welding gun capable of promptly and conveniently processing a replacement operation of a camera module by a user.

According to another aspect of the present invention, there is provided an apparatus for inspecting a welding tip of a spot welding gun including a plurality of camera illumination light sources, a camera module for photographing a tip of the welding tip, A main circuit board on which a main circuit module for analyzing the degree of contamination of the welding tip is mounted through an image of the tip of the welding tip;

A pressing plate having a first penetrating portion through which the welding tip to be inspected passes; A center guide portion in which a mounting portion in which the pressure plate is mounted is formed; A protective case having an insertion portion into which a welding tip is inserted at a position corresponding to the first through-hole of the pressing plate;

And a housing detachably connected to the main circuit board and having a second penetrating portion connected to the first penetrating portion of the pressing plate and a seating portion on which the pressing plate and the center guide portion are seated.

The pressing plate of the welding tip inspection apparatus of the spot welding gun according to the present invention is provided with a first light passage portion through which light reflected from the welding tip passes, a housing extending from the second penetration portion, And a second light passage portion through which light reflected by the second light passage passes.

A connector for connecting a camera module is formed on a main circuit board of a welding tip inspecting apparatus for a spot welding gun according to the present invention. The housing has an insertion portion for inserting a circuit board on which the camera module is mounted, Is formed.

The apparatus for inspecting a welding tip of a spot welding gun according to the present invention is characterized in that it further comprises a protection member coupled to the housing so as to be attachable to the housing, and protecting the insertion portion of the protective case by being rotated by the air cylinder during forward movement.

As described above, the apparatus for inspecting a welding tip of a spot welding gun according to the present invention has the following advantages.

First, even if the welding tip transferred by the welding tip transfer gun is inserted and pressed with an error of several millimeters at the reference insertion position, the contamination of the welding tip can be inspected without damaging the part.

Second, the user can quickly and conveniently process replacement of the camera module.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view for explaining a welding tip inspection apparatus for a spot welding gun according to the present invention; FIG.
FIGS. 2A and 2B are views for explaining a protective member for a welding tip inspection apparatus of a spot welding gun according to the present invention.
3 is an exploded view of components of a welding tip inspection apparatus for a spot welding gun according to the present invention.
4 is a cross-sectional view of a welding tip inspection apparatus for a spot welding gun according to the present invention.
5A and 5B are diagrams for explaining a change in the position of a pressing plate of a welding tip inspection apparatus for a spot welding gun according to the present invention.
6 is a view for explaining a process of replacing a camera module of a welding tip inspection apparatus of a spot welding gun according to the present invention.
FIG. 7 illustrates a process of photographing a cross section of a welding tip through a camera module and a reflector used in a welding tip inspection apparatus for a spot welding gun according to the present invention.
8 is an exemplary view for explaining a process of photographing a cross section of a welding tip with a camera module and judging whether or not the cross section of the welding tip is contaminated through image processing.
9 is an exemplary view for explaining a welding tip inspection apparatus of a conventional spot welding gun.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

FIG. 1 is an exemplary view for explaining a welding tip inspecting apparatus for a spot welding gun according to the present invention, FIGS. 2a and 2b are illustrations for explaining a protecting member for a welding tip inspecting apparatus of a spot welding gun according to the present invention, FIG. 3 is an exploded view of components of a welding tip inspection apparatus for a spot welding gun according to the present invention, and FIG. 4 is a sectional view of a welding tip inspection apparatus for a spot welding gun according to the present invention.

1, 2A, 2B, 3, and 4, the welding tip inspection apparatus 100 for a spot welding gun according to the present invention includes a PLC cable port 110, an Ethernet port 120, And a protective member 160 for blocking foreign matter from penetrating through the upper and lower housings 130 and 170 and the insertion portions 131 and 171 of the lower housing 150 and the protective cases 130 and 170 .

The protection member 160 is detachably coupled to the upper housing 140 and the lower housing 150, as shown in FIGS. 2A and 2B. The protective member 160 includes a lid portion 162 for opening and closing the insertion portions 131 and 171 of the protective cases 130 and 170 when the hinge member is rotated forward by the air cylinder 161.

The welding tip inspection apparatus 100 of the spot welding gun according to the present invention is protruded from the protective cases 130 and 170 to protect the camera module 330 and 360 in FIG. The protrusions 135 and 175 are formed. Reflectors 340 and 370 are shown in front of the lenses of the camera modules 330 and 360 to facilitate understanding in FIG. 3, but are actually mounted on the inner surfaces of the projections 135 and 175 as shown in FIG.

As shown in Fig. 3, the internal components of the welding tip inspection apparatus of the spot welding gun according to the present invention include a main circuit board 350, first penetration portions 311 and 391 through which the welding tip to be inspected passes, 390, the camera modules 330 and 360, the reflectors 340 and 370, the upper housing 140, and the first and second light passing portions 312 and 392 through which the light reflected from the tip passes. A lower housing 150, and center guide portions 320 and 380.

The center guide portions 320 and 380 are formed with mounting portions 321 and 381 in which the pressing plates 310 and 390 are mounted. The center guide portions 320 and 380 are formed of a material having elasticity (rubber, for example). The center guide portions 320 and 380 prevent the welding tip transferred by the welding tip transferring gun from being damaged even if it is inserted and pressed with an error of several millimeters at the reference insertion position. The center guide portions 320 and 380 may be made of a metal material, for example, using a urethane material.

In Fig. 3, the upper housing 140 and the lower housing 150 are detachably coupled. The upper housing 140 includes a seating part 141 on which the pressing plate 310 and the center guide part 320 are seated and a second penetrating part 142 connected to the first penetrating part 311 of the pressing plate 310. [ And a second light passing portion 143 extending from the second penetrating portion 142 and radiating from a light source for camera illumination (reference numeral 391 in FIG. 4) and passing through the light reflected from the welding tip.

The lower housing 150 includes a seating part on which the center guide part 380 is seated and a second penetrating part 152 connected to the first penetrating part 391 of the pressing plate 390, And a second light passing portion 153 extending from the second penetrating portion 152 and radiating from a light source for camera illumination (reference numeral 351 in FIG. 4) to pass light reflected from the welding tip.

3, the main circuit board 350 includes a plurality of camera lighting light sources 351 disposed around an inspection space, and a display device (not shown) for receiving a display control signal corresponding to the determination result of the welding tip pollution degree from the main circuit module 352). The display device 352 is realized by a three-color LED element, and is displayed in green when the pollution degree determination result is 'normal', yellow when it is 'Caution', and red when it is 'poor' And the results of the contamination test.

The main circuit board 350 is formed with a camera module connecting portion 353 to which the circuit board on which the camera module including the lens module and the image sensor is mounted is detachably attached. The upper housing 140 and the lower housing 150 are formed with inserting portions 144 and 154 for inserting a circuit board on which the camera module is mounted at positions corresponding to the camera module connecting portions 353 of the main circuit board 350 . Accordingly, the user can quickly and conveniently perform the replacement operation of the camera module.

4, the welding tip is inserted between the insertion portions 131 and 171 of the protective cases 130 and 170, the first penetration portions 311 and 391 of the pressure plates 310 and 390, and the upper housing 140 and the lower housing 150 through the second through-holes 142, 152 in order.

The protrusions 135 and 175 protrude from the protective cases 130 and 170 to protect the camera modules 330 and 360. Reflectors 340 and 370 are mounted on the inner surfaces of the protrusions 135 and 175.

5A and 5B are diagrams for explaining a change in the position of a pressing plate of a welding tip inspection apparatus for a spot welding gun according to the present invention. The center guide part 320 has a deformation distance of ± 3 mm and the center guide part 320 is mounted on the pressing plate 310 so that the welding tip is inserted into the first penetrating part 311 of the pressing plate 310 So that the position of the pressure plate 310 is not changed by more than ± 3 mm.

6 is a view for explaining a process of replacing a camera module of a welding tip inspection apparatus of a spot welding gun according to the present invention.

The protrusion 135 protrudes from the protective case 130 to protect the camera module 330. A reflecting mirror 340 is mounted on the inner surface of the protrusion 135. The presser plate 310 and the center guide unit 320 are mounted on the upper housing 140. The protective case 130 and the upper housing 140 are detachably coupled by a coupling member 611.

The apparatus for inspecting a welding tip of a spot welding gun according to the present invention is characterized in that an image of a cross section of a pair of welding tips 11 and 12 is irradiated through reflectors 340 and 370 and camera modules 330 and 360 Can be obtained. A welding tip inspection apparatus for a spot welding gun according to the present invention is implemented such that a pair of welding tips (11, 12) are spaced, for example, 20 mm.

As shown in FIG. 8, the process of determining whether the welding tip cross-section is contaminated by photographing a cross-section of the welding tip according to the present invention with a camera module and performing image processing includes an image obtaining step S811, a channel dividing step S812, (Step S813), a projection conversion step S814, an automatic contrast enhancement step S815, an edge detection step S816, a pressing plate inner diameter detection step S817, a welding tip section detection step S818, , And a contamination degree detection step S819.

The image acquiring step (S811) is a step of receiving the RGB image of the welding tip front end from the camera module. In this case, the RGB image contains various color information. In order to omit unnecessary color information review in the process of analyzing the contamination degree of the welding tip, the RGB image is converted into the YCbCr image including the luminance information, the blue information and the red information .

In the present specification, the RGB image is input and then converted into a YCbCr image. However, the present invention is not limited thereto, and a YCbCr image can be input directly from the camera module.

In the channel segmenting step S812, the tip region is detected based on the luminance information, the blue information, and the red information. In addition, in order to detect the front end face using only the Y image including the luminance information, the YCbCr image includes luminance information A Cb image including a Y image, luminance information, and blue information, luminance information, and a Cr image including red information.

In the ROI selection step S813, an area corresponding to the preset tip color information may be extracted from the YCbCr image to detect the welding tip area, and the detected welding tip area may be designated as the area of interest.

The projection conversion step S814 is a step of projecting a point in the three-dimensional space onto the image plane. The automatic contrast enhancement step (S815) may binarize the welding tip image based on a preset reference value to obtain welding tip binarization data. For example, the welding tip binarization data can be obtained by digitizing an area lower than a preset reference value in the welding tip image to 0 and mapping an area higher than a preset reference value to 255.

The edge detection step S816 may extract the welding tip edge based on the welding tip binarization data. For example, by detecting the boundary region between 0 and 255 on the basis of the welding tip binarization data, the outer edge portion of the shape of the welding tip, that is, the edge of the welding tip can be extracted.

The pressing plate inner diameter detecting step (S817) is a step of detecting a region corresponding to the first penetrating portion 311 of the pressing plate (reference numeral 310 in Fig. 3). The pressing plate inner diameter detecting step S817 may perform an ellipse detecting step of detecting an ellipse based on the edge information detected in the edge detecting step and the shape information of the welding tip region. When each edge pixel coordinate is detected in an edge image and an ellipse is detected based on the detected pixel coordinates and extracted shape information, an ellipse can be detected using a known Hough based Ellipse detection algorithm.

In the welding tip section detection step (S818), a plurality of ellipses are detected in the ellipse detection step, and the diameter of each ellipse detected and the height ratio of the detected tip area are compared with a predetermined reference ratio to determine an ellipse It is possible to perform a line section determination step of determining the line section. In this case, the diameter of each ellipse detected and the height ratio of the detected interest region are compared with a preset reference ratio, and an ellipse having a minimum error among the ellipses contained within the allowable range of the plurality of ellipse reference ratios is determined as the front end face .

The contamination level detection step (S819) can compare the color information of each pixel in the detected front cross section with preset reference color information to measure the contamination degree of the front end face. The contamination degree detection step S819 may include a pixel counting step and a pollution degree measuring step. Counting the number of all the pixels located inside the edge detected from the differentiated tip area detection image and counting black pixels having low brightness among the pixels located inside the edge as a contaminated pixel and counting them. The number of contaminated pixels counted can be divided by the total number of pixels for the front end face to calculate the contamination ratio for the welding tip front end, and the contamination degree can be measured according to the level value of each contaminated pixel.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined only by the appended claims.

11, 12: Welding tips
100: Welding tip inspection tool for spot welding gun
110: PLC cable port
120: Ethernet port
130, 170: Protective case
131, 171:
135, 175:
140: upper housing
141:
142: second through-
143: second light passage portion
144:
150: Lower housing
151:
152: second through-
153: second light passage portion
154:
160: Protection member
161: Air cylinder
162:
310, 390: pressure plate
311, 391:
312, 392: a first light-
320, 380: center guide portion
330, 360: Camera module
340, 370: reflector
350: main circuit board
351: Light source for camera illumination
352: Display device
353: Camera module connection part

Claims (5)

A camera module for photographing a tip end of a welding tip inserted into the inspection space, a reflector for reflecting the light reflected from the welding tip to the camera module, And a main circuit module mounted on the main circuit module for analyzing the degree of contamination of the welding tip through an image of the welding tip of the spot welding gun,
A pressing plate having a first penetrating portion through which the welding tip to be inspected passes;
A center guide part having a mounting part on which the pressing plate is mounted;
A protective case having an insertion portion into which a welding tip is inserted at a position corresponding to the first through-hole of the pressing plate;
A second penetrating portion to which the main circuit board is mounted, a second penetrating portion connected to the first penetrating portion of the pressing plate, a seating portion on which the pressing plate and the center guide portion are seated, housing;
Wherein the welding tip inspection apparatus comprises: The method according to claim 1,
Wherein the center guide portion is formed of a material having an elastic force. The method according to claim 1,
The pressure plate may include:
A first light passage portion through which light reflected by the welding tip passes is formed,
The housing includes:
A second light passage portion extending from the second penetration portion and being irradiated from the light source for camera illumination to reflect light reflected from the welding tip,
Wherein the welding tip inspection apparatus comprises: The method of claim 3,
A camera module connecting portion is formed on the main circuit board,
The housing includes:
An insertion portion for inserting a circuit board on which the camera module is mounted is formed at a position corresponding to the camera module connection portion of the main circuit board,
Wherein the welding tip inspection apparatus comprises: The method according to claim 1,
A protection member coupled to the housing in a manner capable of being mounted in a tower, the protection member rotated during forward movement by an air cylinder to prevent foreign matter from penetrating through the insertion portion of the protection case;
Further comprising a welding tip for welding the spot weld gun.
KR1020160164296A 2016-12-05 2016-12-05 Inspection apparatus for welding tip of spot welding gun KR101926635B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020160164296A KR101926635B1 (en) 2016-12-05 2016-12-05 Inspection apparatus for welding tip of spot welding gun
PCT/KR2017/009210 WO2018105853A1 (en) 2016-12-05 2017-08-23 Apparatus for inspecting welding tips of spot welding guns

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Application Number Priority Date Filing Date Title
KR1020160164296A KR101926635B1 (en) 2016-12-05 2016-12-05 Inspection apparatus for welding tip of spot welding gun

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KR101926635B1 KR101926635B1 (en) 2018-12-07

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR20200142693A (en) 2019-06-13 2020-12-23 아진산업(주) Apparatus and method for inspecting contamination of welding tip based on fisheye camera

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KR102420519B1 (en) * 2020-05-15 2022-07-15 (주)엔정보기술 Non­destructive inspection device using 60GHz radar of the welding part of the ship

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JP2009285725A (en) * 2008-06-02 2009-12-10 Toyota Auto Body Co Ltd Welding electrode inspection device and welding electrode inspection method
KR101385922B1 (en) 2009-10-27 2014-04-15 가부시키가이샤 키렉스 Electrode inspection device for spot welding
US20140333756A1 (en) * 2012-02-01 2014-11-13 Keylex Corporation Electrode inspection apparatus for spot welding
KR20160066086A (en) * 2014-12-01 2016-06-10 아진산업(주) Test apparatus for tip of spot wellding gun
JP2016525690A (en) * 2013-08-01 2016-08-25 シンテルレーゲ・エス．アール．エル．ＳＩＮＴＥＲＬＥＧＨＥ Ｓ．ｒ．ｌ． Optical device for detecting the quality of welding gun electrodes
KR20160113792A (en) * 2015-03-23 2016-10-04 주식회사휴비스 Verification apparatus for electrode tip of spot welding device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009285725A (en) * 2008-06-02 2009-12-10 Toyota Auto Body Co Ltd Welding electrode inspection device and welding electrode inspection method
KR101385922B1 (en) 2009-10-27 2014-04-15 가부시키가이샤 키렉스 Electrode inspection device for spot welding
US20140333756A1 (en) * 2012-02-01 2014-11-13 Keylex Corporation Electrode inspection apparatus for spot welding
JP2016525690A (en) * 2013-08-01 2016-08-25 シンテルレーゲ・エス．アール．エル．ＳＩＮＴＥＲＬＥＧＨＥ Ｓ．ｒ．ｌ． Optical device for detecting the quality of welding gun electrodes
KR20160066086A (en) * 2014-12-01 2016-06-10 아진산업(주) Test apparatus for tip of spot wellding gun
KR20160113792A (en) * 2015-03-23 2016-10-04 주식회사휴비스 Verification apparatus for electrode tip of spot welding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200142693A (en) 2019-06-13 2020-12-23 아진산업(주) Apparatus and method for inspecting contamination of welding tip based on fisheye camera

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