WO2017002604A1 - 被管理個体および刻印方法 - Google Patents
被管理個体および刻印方法 Download PDFInfo
- Publication number
- WO2017002604A1 WO2017002604A1 PCT/JP2016/067652 JP2016067652W WO2017002604A1 WO 2017002604 A1 WO2017002604 A1 WO 2017002604A1 JP 2016067652 W JP2016067652 W JP 2016067652W WO 2017002604 A1 WO2017002604 A1 WO 2017002604A1
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- WO
- WIPO (PCT)
- Prior art keywords
- dot
- managed
- recess
- managed individual
- code
- Prior art date
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/06121—Constructional details the marking having been punched or cut out, e.g. a barcode machined in a metal work-piece
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0853—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/3568—Modifying rugosity
- B23K26/3576—Diminishing rugosity, e.g. grinding; Polishing; Smoothing
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/06159—Constructional details the marking being relief type, e.g. three-dimensional bar codes engraved in a support
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/06—Cast-iron alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0068—Brake calipers
Definitions
- the present invention relates to a managed individual (part to be managed) and a marking method.
- a stamp code that can be detected well is desired.
- the present invention aims to provide a managed individual having a well-detectable marking code and a marking method.
- the present invention is provided with a flat surface extending obliquely toward the bottom of the dot around the dot of the marking code having a plurality of dots.
- the stamp code can be detected satisfactorily.
- Sectional drawing which shows the managed individual
- the top view which shows the movement locus
- Sectional drawing which shows the dot recessed part after the coating of the managed individual of 1st Embodiment.
- the top view which shows a part of stamp code after the coating of the managed individual of 1st Embodiment.
- the perspective view which shows the dot recessed part after the coating of the management subject of 1st Embodiment.
- the top view which shows the dot recessed part after the coating of the management subject of 1st Embodiment.
- the top view which shows a part of stamp code of the managed individual of 2nd Embodiment The perspective view which shows the dot recessed part of the managed individual of 2nd Embodiment.
- the managed individual (managed component) 10 of the first embodiment has a stamp code 11.
- the stamp code 11 is a reading code (two-dimensional code) read by the reading device, and indicates various information regarding the managed individual 10 on which it is formed.
- the information indicated by the stamp code 11 includes, for example, the identification of the manufacturing company that manufactures the managed individual 10, the identification of the manufacturing factory, the product model, the manufacturing date, the manufacturing lot number, and the like.
- the two-dimensional code may be a two-dimensional code defined by various standards. Although other cords may be used, the present invention is particularly effective when the cord has a square marking.
- the marking code 11 of the present embodiment includes a rectangular flat base surface 14 and a plurality of dot recesses 15 formed within the range of the base surface 14.
- the marking code 11 in the illustrated example is a matrix code of 12 rows ⁇ 12 columns and has a size of 4 to 5 mm per side. That is, the engraved code 11 has twelve horizontal lines arranged in parallel with each other at equal intervals, and twelve vertical lines arranged in parallel with each other at equal intervals. Each intersection position with the line is set as a dot arrangement possible position, and the dot recess 15 is arranged at a position selected and set from these dot arrangement possible positions. In the case of a 12-row ⁇ 12-column matrix code, there are 144 dot placement positions.
- the base surface 14 is formed by cutting the surface 18 of the managed individual 10 to form a flat surface, and is formed at a position recessed from the surface 18 around the base surface 14. ing.
- arc-shaped convex portions 18 ⁇ / b> A are written on the surface 18, but this is a schematic representation of minute irregularities such as the surface of cast iron, which is actually random. It is uneven.
- the dot recess 15 is formed to be further recessed than the base surface 14.
- the dot recess 15 is formed to be recessed from the base surface 14 in a direction perpendicular to the base surface 14, and as shown in FIG. 3, it is a tapered quadrangular pyramid hole that becomes narrower on the back side, that is, the bottom side.
- the dot recess 15 has a regular quadrangular pyramid shape.
- a protruding portion 21 that protrudes from the base surface 14 is formed so as to surround the entire periphery of the dot recess 15.
- the protrusion 21 has a quadrangular peripheral shape, more specifically, a square shape.
- the protruding portion 21 is a protruding portion that is formed when the dot recess 15 is processed, and the protruding portion 21 is not necessary if the protruding portion 21 cannot be formed.
- the opening peripheral edge 22 located at the opening end of the dot recess 15 is the inner peripheral edge of the protrusion 21.
- the opening peripheral edge portion 22 of the dot recess 15 has a quadrangular shape in which square concave portions 25 that are recessed acutely diagonally outward are formed at four corner positions of the quadrilateral, and more specifically, the four corner positions of the square. It is a square shape in which a corner recess 25 that is recessed diagonally outward is formed.
- the opening peripheral edge portion 22 is a straight intermediate edge portion 26 between the corner concave portions 25 adjacent in the circumferential direction.
- the intermediate edge portions 26 adjacent to each other in the circumferential direction are arranged so as to be perpendicular to each other.
- the projecting portion 21 has V-shaped angular convex portions 27 projecting diagonally outward at four corners of the square so that the opening peripheral portion 22 serving as the inner peripheral portion has the above-described shape.
- a linear intermediate extending portion 28 is formed between the angular protrusions 27 that are formed and adjacent in the circumferential direction.
- the intermediate extending portions 28 adjacent to each other in the circumferential direction are arranged so as to be perpendicular to each other.
- the dot recess 15 has four inclined plane (flat surfaces) wall surfaces 30 shown in FIG. 4 that are inclined with respect to the depth direction (the plane is any two points above it). A plane that always has a straight line through it).
- the above-described four intermediate edge portions 26 of the opening peripheral edge portion 22 of the dot recess 15 are upper end edge portions of the four wall surfaces 30.
- two wall surfaces 30a of one set of two wall surfaces 30 facing each other out of these four wall surfaces 30 can be arranged in the same row (lateral direction in FIG. 5).
- the two wall surfaces 30b of the other set that face each other and are opposed to each other (vertical direction in FIG. 5) are along the alignment direction of dot arrangement possible positions arranged in the same row (vertical direction in FIG. 5).
- the dot recess 15 is a dot arrangement in which one of the two intermediate edge portions 26 of the two intermediate edge portions 26 facing each other among the four intermediate edge portions 26 of the opening peripheral edge portion 22 is arranged in the same row.
- the other two intermediate edge portions 26b of the two sets of intermediate edge portions 26 that face each other along the arrangement direction of the possible positions are along the arrangement direction of the dot arrangement possible positions arranged in the same row.
- the four wall surfaces 30 of the dot recess 15 shown in FIG. 3 are inclined at the same angle with respect to the base surface 14.
- the dot recess 15 constitutes a peripheral wall surface 31 having a shape obtained by cutting off the apex side of the quadrangular pyramid by connecting these four planar wall surfaces 30a, 30b, 30a, 30b.
- the bottom surface 32 of the dot recess 15 is curved in a spherical shape and connects the back side of the four wall surfaces 30. In other words, the bottom surface 32 of the dot recess 15 is formed so as to close the back side of the peripheral wall surface 31.
- the dot recess 15 has a quadrangular pyramid shape, and the bottom surface 32 on the back side thereof has a spherical shape.
- the spherical surface of the bottom surface 32 is a shape that can be formed when the later-described dot recess 15 is processed.
- the spherical surface should have a small radius of curvature, and is theoretically not a spherical surface but a perfect quadrangular pyramid shape. That is good.
- the depth of the bottom 32 is substantially constant. Conventionally, it is known that dots on a cone are formed by engraving dot pins. However, when dot pins are imprinted, the depth becomes uneven and the apparent shading of the dots changes, making it well. I can't read it.
- the dot placement possible position is set so that the dot recesses 15 are separated from each other when the dot recesses 15 are formed at adjacent positions in both the row direction and the column direction.
- the protruding portions 21 including the opening peripheral edge portion 22 are also set to be separated from each other.
- the stamped code 11 including the base surface 14, the protruding portion 21, and the dot recess 15 is formed by performing a stamped code forming step of performing laser processing on the managed object 10.
- the engraved code forming process will be described by taking as an example the case where the managed individual 10 is made of cast metal.
- the stamp code formation is formed immediately after the casting is manufactured.
- the stamped code 11 that is, before the stamped code forming step is performed, as shown in FIG. 6A
- the surface 18 of the managed object 10 is in a state of casting surface and is rough and has unevenness 18A. It has a shape.
- the marking code forming step first, the surface 18 of the managed individual 10 in this state is leveled by laser processing, and the base processing is performed to form the flat base surface 14 as shown in FIG. 6B.
- the base processing is repeatedly performed by moving the laser beam linearly in the horizontal direction while sequentially shifting the position in the vertical direction.
- the intensity of the laser beam can be controlled according to the unevenness state. In this way, the planar base surface 14 that is flatter than the cast skin state is formed on the managed object 10.
- a marking process is performed in which a dot recess 15 that is recessed in a direction perpendicular to the base surface 14 is formed by laser processing.
- the irradiation trajectory of the laser beam forming one dot recess 15 is a trajectory X that draws a rectangular spiral from the outside to the inside as shown in FIG. 7, for example.
- the outermost locus X1 of the spiral is a shape in which each corner of the rectangle protrudes diagonally outward, and the inner locus X2 has a shape in which the corner is bent at a right angle. ing.
- the density in the inner and outer directions differs depending on the position in the inner and outer directions.
- the range in which the four wall surfaces 30 are formed is set to be dense so that the flatness of the wall surface 30 is increased and the range in which the bottom surface 32 that does not require flatness is formed is rough.
- the laser beam is controlled in intensity and moving speed according to the position, and at least one of the movement from the outside to the inside and the movement from the inside to the outside of the trajectory while controlling the depth. Then, the object to be managed 10 is melted by performing the movement a plurality of times as appropriate, and as shown in FIGS. 3 and 4, there are four planar wall surfaces 30 and one spherical bottom surface 32 and four. One dot concave portion 15 is formed by forming the corner concave portion 25 at a location. At this time, the movement trajectory, movement speed, and intensity of the laser light are appropriately set according to conditions such as the material of the managed individual 10.
- the surplus of the managed individual 10 melted when forming the dot recess 15 is discharged outside the dot recess 15, and outside the base surface 14 around the opening of the dot recess 15. It becomes the protrusion part 21 which protrudes.
- the dot recess 15 has a quadrangular pyramid shape and is recessed from the protrusion 21. As shown in FIG. 1, a plurality of such dot recesses 15 are formed at positions that are selected and set in advance from dot disposition positions. Thereafter, the cleaning of removing the wrinkles on the base surface 14 is performed by repeatedly moving the laser beam, for example, in the horizontal direction linearly while sequentially shifting the position in the vertical direction.
- the above stamp code forming process is executed, and the stamp code 11 is formed on the managed individual 10. If the bottom 32 is uneven, a bottom smoothing process may be performed in which the bottom unevenness is irradiated with laser light.
- the marking code 11 formed in the marking code forming process includes a base surface 14, a plurality of protrusions 21 protruding outward from the base surface 14, and the inner sides of the protrusions 21 corresponding to each. It has a plurality of dot recesses 15 that are recessed from the protrusion 21 at a position.
- the stamped code 11 is read with respect to the managed individual 10 on which the stamped code 11 is formed in the stamped code forming process, and an appropriate post-process is executed while performing component management based on the stamped code 11. become.
- this post-process for example, a processing process for cutting each part, a coating process for forming a coating layer such as a plating layer such as electroplating or an electrodeposition coating layer such as cationic coating, and a combination for assembling other components.
- FIG. 7 the irradiation locus of the laser beam is drawn from the outside to the inside as shown in FIG. 7, and then the other dot recesses 15 are similarly shown in FIG. As shown in Fig.
- a rectangular spiral is drawn from the outside to the inside, and first the first step is shaved. While the other dot recesses 15 are being shaved, the dot recesses 15 shaved before are cooled. This is repeated twice and three times. In the second and third times, the size of the rectangular spiral is gradually reduced, and the second and third steps are deeply cut to form an inverted pyramid-shaped hole. At this time, since the steps of the slope are slightly melted by the laser beam, a flat inclined wall surface 30 is formed.
- the reading device that reads the marking code 11 includes a light source that irradiates the base surface 14 with light from the vertical direction, and a CCD camera that detects an image of the marking code 11 irradiated with light from the light source in the vertical direction of the base surface 14. It has a detection device and an analysis device for analyzing the image detected by the detection device and determining the shape of the marking code 11.
- the inclined wall surface 30 of the dot recess 15 reflects the reflected light from the light source in a direction different from that of the detection device.
- the concave portion 15 becomes a black dot having the same square shape as the opening shape inside the peripheral edge portion 22 of the opening, and the portion other than the dot concave portion 15 becomes white.
- the analysis device detects the shape of the black dot aggregate as the shape of the stamp code 11.
- the managed object 10A after the coating layer 40 is formed has the surface 18 coated with the coating layer.
- the coating layer 40 is formed with a substantially constant thickness.
- the base surface 14 formed as a previous stage of the coating process is covered with the coating layer 40 having a substantially constant thickness, and the coating layer 40 covering the base surface 14 is covered.
- the surface is a flat base surface 14A.
- the stamped code 11A after coating is a square pyramid-shaped dot recess 15 which is a previous-stage recess including the opening peripheral edge 22 which is the previous-stage opening peripheral edge formed in the previous-stage stamp code forming process of the coating process. Is coated with a coating layer 40 having a substantially constant thickness.
- the surface of the coating layer 40 covering the rectangular opening peripheral edge 22 is a square opening peripheral edge 22A
- the surface of the coating layer 40 covering the dot concave 15 is a quadrangular pyramid dot concave 15A. More specifically, the surface of the coating layer 40 covering the square opening peripheral edge 22 becomes the square opening peripheral edge 22A, and the surface of the coating layer 40 covering the dot concave 15 is a regular quadrangular pyramid dot concave 15A. It has become.
- the stamp code 11A has the same number of dot recesses 15A at the same position as before coating.
- the dot recess 15 ⁇ / b> A is formed by covering the surface of the dot recess 15 with the coating layer 40 having a substantially constant thickness. It is a small size. That is, in the dot recess 15A, the surface of the wall surface 30 is covered with the coating layer 40 having a substantially constant thickness, and the surface of the coating layer 40 covering the wall surface 30 is a planar wall surface 30A. The surface of the bottom surface 32 is covered with a coating layer 40 having a substantially constant thickness, and the surface of the coating layer 40 covering the bottom surface 32 is a spherical bottom surface 32A of the dot recess 15A.
- the dot recess 15A has four planar wall surfaces 30A that are inclined with respect to the depth direction, and each of these four planar wall surfaces 30A is equivalent to the base surface 14A. It is inclined at an angle of.
- These four planar wall surfaces 30A constitute a peripheral wall surface 31A having a shape obtained by cutting off the apex side of the quadrangular pyramid.
- the bottom surface 32A of the dot recess 15A is formed so as to be curved in a spherical shape and close the back side of the peripheral wall surface 31A.
- each corner recess 25 is filled with the coating layer 40 and disappears as shown in FIGS. 3 and 4.
- the coating material that easily collects at the four corner positions of the opening peripheral edge portion 22 of the dot recess 15 is allowed to escape to each corner recess 25, thereby suppressing excessive accumulation of the coating material at the corner positions.
- the opening peripheral edge 22 ⁇ / b> A of the dot recess 15 ⁇ / b> A has a square shape closer to the square than the opening peripheral edge 22 before coating.
- the coating layer such as electroplating or electrodeposition coating is thin (to the extent that the marking code is not filled with the coating layer).
- the electric field at the corners becomes strong, so that the electroplating or electrodeposition coating becomes thick at this portion.
- the opening peripheral edge 22A of the dot recess 15A after coating is composed of four linear edges 26A, and the edges 26A adjacent in the circumferential direction are arranged perpendicular to each other.
- the four edge portions 26A are upper edge portions of the four wall surfaces 30A.
- the protrusion 21A after coating the protrusion 21 also protrudes from the base surface 14A so as to surround the entire periphery of the dot recess 15A.
- the projecting portion 21A has an opening peripheral portion 22A serving as an inner peripheral portion thereof having the above-described shape.
- angular convex portions 27A that protrude acutely outward in the diagonal direction are formed at the four corner positions of the square so that the outer peripheral edge portion has the same shape as before coating, and the angular convex portions adjacent in the circumferential direction are formed. Between 27A is a linear intermediate extending portion 28A. The intermediate extending portions 28A adjacent in the circumferential direction are arranged perpendicular to each other.
- one set of two wall surfaces 30A facing each other is along the arrangement direction of the dot arrangement possible positions arranged in the same row.
- the other two wall surfaces 30A of the set facing each other are along the arrangement direction of the dot arrangement possible positions arranged in the same row.
- the dot placement possible position is set so that the dot concave portions 15A are separated from each other when the coated dot concave portions 15A are formed at adjacent positions in both the row direction and the column direction.
- the protrusions 21A after coating are also set apart from each other.
- the wall surface 30A of the dot recess 15A reflects the reflected light of the light from the light source in a direction different from that of the detection device.
- the image detected by the device is a black with the dot recess 15A having the same square shape as the opening formed inside the opening peripheral portion 22A (a square shape closer to the square than when the dot recess 15 before coating is detected). It becomes a dot, and the part other than the dot recess 15A becomes white.
- the analysis device recognizes the shape of the black dot aggregate as the shape of the stamp code 11A.
- the angles of the wall surface 30 and the wall surface 30A hardly change before and after coating, the function of reflecting the reflected light in a direction different from that of the detection device is the same. Therefore, the reading accuracy hardly changes before and after coating.
- the marking code is composed of a plurality of conical dot holes, when this marking code is detected optically, it is detected as an aggregate of circular dots. If the marking code is detected as an aggregate of circular dots in this way, the possibility of erroneous detection increases. Therefore, it is necessary to perform a correction process for correcting a circular dot into a quadrangle by an analysis device.
- This correction process corrects two misrecognition elements, ie, a process of making a circle into a square and a part that is diffusely reflected by a cone and recognized as white, so that the possibility of erroneous detection is high.
- the dot recesses 15 are arranged between the pair of wall surfaces 30 along the alignment direction of the dot recesses 15 constituting the same row and the arrangement of the dot recesses 15 constituting the same row. It has a quadrangular pyramid shape having a pair of wall surfaces 30 along the direction.
- the dot recesses 15A are along the direction of the arrangement of the pair of wall surfaces 30A along the arrangement direction of the dot recesses 15A constituting the same row and the arrangement of the dot recesses 15A constituting the same row. It has a quadrangular pyramid shape having a pair of wall surfaces 30A.
- the marking codes 11 and 11A of the first embodiment are optically detected, a pair of sides along the direction of the arrangement of the dots constituting the same row and the arrangement of the dots constituting the same column are detected. It is detected as an aggregate of square dots having a pair of sides along the direction. Therefore, the possibility of erroneous detection is reduced as compared with the case where the marking code is detected as an aggregate of circular dots, and the marking codes 11 and 11A are detected well. Therefore, it is not necessary to perform a correction process for correcting a circular dot into a quadrangle or a correction process for recognizing white by irregular reflection by an analysis device such as Patent Document 1 (even if correction is performed to increase accuracy). Good).
- the dot recesses 15 and 15A can be easily formed.
- the dot recess 15 is formed by laser processing, the dot recess 15 can be easily formed.
- the dot recess 15A is formed by laser processing and coating, the dot recess 15A can be easily formed.
- the corner recesses 25 that are recessed acutely outward along the diagonal direction are formed at the four corner positions on the opening side of the dot recesses 15 before the coating layer 40 is formed, the coating material is applied during coating. It is possible to enter the corner recess 25. Accordingly, it is possible to suppress the protrusion of the dot recess 15A after coating to the inside of the coating layer 40 at the corner position. Therefore, the opening shape inside the opening peripheral edge 22A of the dot recess 15A can be made closer to a quadrangle. Therefore, the dot recess 15 is detected as a dot closer to a quadrangle when optically detected.
- the angle ⁇ formed with the surface orthogonal to the direction is the same.
- the angle ⁇ was changed, and the state of reading the marking codes 11 and 11A by a commercially available reading device was examined. The results are shown in Table 1 below. There was no difference in the results between the marking code 11 having the dot recess 15 before coating and the marking code 11A having the dot recess 15A after coating, and similar results were obtained.
- the necessity of correction in Table 1 is based on the result of examining whether reading is possible without performing the correction processing as described above when the marking codes 11 and 11A are read by a commercially available reading device. is there. If correction processing is not required, the reading time can be shortened.
- the angle ⁇ is 32 degrees or more, the stamp code 11 can be read, but correction processing is necessary, and a delay in the reading time (decoding time) is recognized. Therefore, the angle ⁇ is set to 25 degrees or less. As a result, the marking code 11 can be read, and the reading time delay can be suppressed.
- the managed individual 10B of the second embodiment has a marking code 11B having a shape that is partially different from the marking code 11 of the first embodiment.
- the first embodiment The dot recess 15 has a plurality of dot recesses 15B that are partially different in shape.
- the dot recess 15 ⁇ / b> B has an opening peripheral edge 22 ⁇ / b> B that is different from the opening peripheral edge 22 of the first embodiment.
- the corner recesses 25 of the first embodiment are not formed at the four corner positions of the opening peripheral edge 22B.
- the dot recess 15B has the same shape as the dot recess 15 of the first embodiment except for the opening peripheral edge 22B.
- the dot recess 15 ⁇ / b> B has four planar wall surfaces 30 ⁇ / b> B that are inclined with respect to the depth direction, and each of these four planar wall surfaces 30 ⁇ / b> B is equivalent to the base surface 14. It is inclined at an angle of.
- These four wall surfaces 30B constitute a peripheral wall surface 31B having a shape obtained by cutting off the apex side of the quadrangular pyramid.
- the opening peripheral part 22B of the dot recessed part 15B is an upper end edge part of the surrounding wall surface 31B, and has a shape closer to the square than the opening peripheral part 22 of the dot recessed part 15 of the first embodiment.
- the opening peripheral edge 22B of the dot recess 15B is composed of four linear edges 26B, and the edges 26B adjacent in the circumferential direction are arranged at right angles to each other.
- the protruding portion 21B protruding from the base surface 14 so as to surround the entire periphery of the dot recess 15B has an inner peripheral edge portion serving as an opening peripheral edge portion 22B.
- the protruding portion 21B includes four linear extending portions 28B in accordance with the shape of the opening peripheral edge portion 22B, and the extending portions 28B adjacent in the circumferential direction are arranged at right angles to each other.
- the protruding portion 21B has a shape closer to a square than the protruding portion 21 of the first embodiment.
- the dot recess 15B that is recessed in the vertical direction with respect to the base surface 14 formed in a flat shape as described above is formed by laser processing in the marking code forming step. .
- each corner portion of the outermost locus of the spiral of the irradiation locus of the laser light has a shape projecting into an acute angle having a larger angle than that of the first embodiment.
- an appropriate subsequent process is executed while reading the marking code 11B with a reader and performing component management.
- the coating layer 40 is formed on the managed individual 10B after the stamp code forming process as shown in FIG. 15 in the coating process
- the managed individual 10C after the coating layer 40 is formed is shown in FIG.
- a marking code 11C having a shape in which the marking code 11B is covered with the coating layer 40 is formed.
- the marking code 11C after coating has a dot recess 15A similar to that of the first embodiment in which the surface made of the coating layer 40 has a quadrangular pyramid shape.
- the protruding portion 21C that protrudes from the base surface 14A so as to surround the entire periphery of the dot recessed portion 15A has the opening peripheral edge portion 22A similar to that of the first embodiment on the inner peripheral edge portion, but has the angular convex portion 27A.
- the protruding portion 21C includes four linear extending portions 28C in accordance with the shape of the opening peripheral edge portion 22A, and the extending portions 28C adjacent to each other in the circumferential direction are arranged perpendicular to each other.
- the protrusion 21C has an outer peripheral shape that is closer to a square than the protrusion 21A of the first embodiment.
- the dot recesses 15, 15 ⁇ / b> A, and 15 ⁇ / b> B have a quadrangular pyramid shape
- the dot recess 15 has an opening peripheral portion 22
- the dot recess 15 ⁇ / b> A has an opening.
- the peripheral edge portion 22A, the dot recess 15B, and the opening peripheral edge portion 22B may be any rectangular shape. For this reason, for example, it can be changed as in the modification examples shown in FIGS. 18A to 20. In the modified examples shown in FIGS. 18A to 20, the description will be given by taking the dot concave portion after coating as an example.
- the four corner positions of the peripheral edge of the opening are aligned along the diagonal direction, as in the first embodiment.
- a corner recess that is recessed acutely outside may be formed, and the corner recess may not be formed as in the second embodiment.
- the opening peripheral portion 22E of the dot recess 15E has a quadrangular shape
- the protruding portion 21E in which the opening peripheral portion 22E is formed on the inner peripheral portion also has a quadrangular shape.
- the opening peripheral portion 22F of the dot recess 15F has a quadrangular shape
- the protruding portion 21F in which the opening peripheral portion 22F is formed on the inner peripheral portion also has a quadrangular shape.
- the opening peripheral portion 22G of the dot recess 15G has a quadrangular shape
- the protruding portion 21G in which the opening peripheral portion 22G is formed on the inner peripheral portion also has a quadrangular shape.
- the bottom-side peripheral wall surface 31G2 is not limited to a quadrangular pyramid shape, and may be the shape of Modification Example 1 or the shape of Modification Example 2.
- the right-angle wall surface 30G1 of FIG. 20 may be extended to the deepest portion
- the inclined bottom side peripheral wall surface 31G2 may be extended to a portion intersecting the wall surface 30G1
- the wall surface 30 may be a single surface.
- the opening is a quadrangle. This is most desirable, but the opening may be a polygon such as a triangle, a pentagon, a trapezoid, a circle, or an ellipse. In this case, the above-described correction process may be necessary.
- the flat surface is inclined even before and after coating. Since the angle does not change, there is an excellent effect that the reading accuracy before and after the coating hardly changes. Of course, even if it is not coated, the reading accuracy is high.
- the above-described managed individuals 10, 10A to 10C, 10E to 10G can be, for example, the caliper body 110 of the disc brake 100 shown in FIG. 21, which is an important safety part.
- the caliper body 110 constitutes a disc brake 100 for a four-wheeled vehicle together with other components indicated by a two-dot chain line in FIG. You may apply to the caliper body of disc brakes, such as two-wheeled vehicles other than a four-wheeled vehicle.
- the caliper body 110 is a metal product, specifically a cast product, and more specifically a cast iron product.
- the disc brake 100 provided with the caliper body 110 brakes the rotation of a disc 112 that rotates together with a vehicle wheel (not shown).
- the disc brake 100 is a pair of carriers (not shown) fixed to a non-rotating portion of the vehicle and a pair of carriers supported by the carrier so as to be movable in the axial direction of the disc 112 while being opposed to both sides of the disc 112.
- Brake pads 114 and a caliper 115 that is supported by the carrier so as to be movable in the axial direction of the disk 112 and presses the pair of brake pads 114 against the disk 112.
- the radial direction of the disk 112 up and down direction in FIG.
- the disk radial direction in the state of constituting the disk brake 100 is referred to as the disk radial direction
- the axial direction of the disk 112 (the left and right direction in FIG. Is referred to as the disk axis direction
- the rotation direction of the disk 112 left-right direction in FIG. 22) is referred to as the disk rotation direction.
- the caliper 115 has a caliper body 110 and a piston 118 provided in the caliper body 110.
- the caliper body 110 is configured by integrally forming a piston support portion 121 that supports the piston 118, a bridge portion 122, and a claw portion 123.
- the piston support part 121 has a cylinder 125 into which the piston 118 is inserted, and a pair of arm parts 126 extending from the cylinder 125 to both sides in the disk rotation direction as shown in FIG.
- the caliper body 110 is supported by a carrier (not shown) by a pair of pins (not shown) attached to the pair of arms 126 so as to be movable along the disk axial direction.
- the caliper 115 clamps the pair of brake pads 114 between the piston 118 protruding from the cylinder 125 and the claw portion 123 by the hydraulic pressure introduced into the cylinder 125 and presses the pair of brake pads 114 against the disc 112 to reduce the frictional resistance. To generate a braking force.
- the caliper body 110 is formed with any one of the stamped cords 11, 11A to 11C, and 11E to 11G at the root positions of the pair of arms 126 on the outer surface of the cylinder 125 in the radial direction of the disk. ing.
- the caliper body 110 is formed with the coating layer 40 by plating after the marking code is formed.
- the coated marking code formed on the caliper body 110 is used for management of the caliper 115.
- the above-described managed individuals 10, 10A to 10C, 10E to 10G can be, for example, the cylinder 210 of the cylinder device 200 shown in FIG.
- the cylinder device 200 includes a substantially cylindrical cylinder 210 in which a liquid or gas as a fluid is sealed, and is disposed on a central axis of the cylinder 210 and is removed from an opening (not shown) at one end in the axial direction of the cylinder 210. And a rod 212 extending in the direction.
- One end of the rod 212 disposed in the cylinder 210 is connected to the piston 213, and the piston 213 divides the cylinder 210 into two chambers.
- the piston 213 moves in the cylinder 210 integrally with the movement of the rod 212 to change the volume of the two chambers, and generates a damping force by the fluid flow resistance generated at that time.
- the mounting eye 215 is fixed to the end of the rod 212 on the protruding tip side.
- a mounting eye 216 is also fixed to the end of the cylinder 210 opposite to the protruding side of the rod 212.
- the cylinder 210 has one of the above-described marking codes 11, 11A to 11C, 11E to 11G formed on the outer peripheral surface thereof.
- the coating layer 40 is formed by cationic coating after the marking code is formed.
- the managed individual based on the embodiment described above, for example, the following modes can be considered.
- a managed individual in which a marking code having a plurality of dot recesses is formed, the peripheral edge of the opening of the dot recess is a square shape, from the periphery of the dot to the bottom of the dot A plane inclined toward the surface is provided.
- the marking code is optically detected, the dot recesses are easily detected as square dots. Therefore, the stamp code can be detected satisfactorily.
- the direction of approaching each other from each of the other set of sides around the dot toward the bottom of the dot is a plane extending to the surface.
- the dot recess has a quadrangular pyramid shape. Thereby, it becomes easy to form an opening peripheral part as a square-shaped dot recessed part.
- the marking code is further improved. It can be detected.
- the dot recess can be easily formed.
- the dot recess is formed by laser processing in any of the first to fourth aspects, the dot recess can be easily formed.
- the dot recess is formed by laser processing and coating, the dot recess can be easily formed.
- it is formed by coating with a plating layer.
- it is formed by coating by electrodeposition coating.
- the managed individual is a caliper body of a disc brake
- the caliper body can be managed and the caliper can be managed satisfactorily.
- the managed individual includes a cylinder, a piston that moves in the cylinder, and is connected to the piston and outward from the cylinder. Since it is the said cylinder of a cylinder apparatus provided with the rod to extend, management of a cylinder and management of a cylinder apparatus can be performed favorably.
- a marking method for marking a read code for individual management on a managed individual the first step of smoothing the surface of the managed individual with laser light, and the smoothing A second step of recessing the reading code with a laser beam on the surface of the managed individual, wherein the second step forms a plurality of concave dots as the reading code.
- the dots form a flat surface inclined from the opening side toward the bottom side.
- the plane of the present invention (the wall surface 30 in the embodiment) may be a plane that allows the marking code to be optically black-recognized by reducing irregular reflection of light for reading.
- Patent Document 1 JP 2006-134299 A
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Abstract
Description
第1実施形態を図1~図11を参照して説明する。図1に示すように、第1実施形態の被管理個体(管理対象部品)10は、刻印コード11を有している。刻印コード11は、読取装置に読み取られる読取コード(2次元コード)であり、これが形成された被管理個体10に関する種々の情報を示すものである。刻印コード11が示す情報としては、例えば、被管理個体10を製造する製造会社の識別、製造工場の識別、製品型式、製造年月日および製造ロット番号等を含む。なお、2次元コードは、各種規格で定められた2次元コードであればよい。他のコードでもよいが、コードの刻印が4角形のものに本発明は特に有効である。
ドット凹部15は、ベース面14よりもさらに凹んで形成されている。ドット凹部15は、ベース面14からベース面14に直交する方向に凹んで形成されており、図3に示すように、奥側つまり底側が細くなる先細の四角錐状の穴となっている。ドット凹部15は、より具体的には、正四角錐状となっている。ドット凹部15の周囲には、ドット凹部15の全周囲を囲むようにベース面14よりも突出する突出部21が形成されている。図4に示すように、突出部21は、周縁形状が四角形状、より具体的には、正方形状となっている。なお、後述するが、突出部21は、ドット凹部15を加工する際に出来てしまう突出部で、この突出部21が出来ない加工方法であれば、突出部21は必要ない。
また、底部32の深さは、略一定となっている。従来ドットピンを打刻することで、円錐上のドットを形成するものが知られているが、ドットピンの打刻では、深さが不均一となり、ドットの見かけ上の濃淡が変化し、うまく読みとることができない。
まず、刻印コード11が形成される前、つまり、刻印コード形成工程の実行前、図6Aに示すように、被管理個体10の表面18は、鋳肌の状態であって粗く、凹凸18Aを有する形状となっている。刻印コード形成工程では、まず、この状態の被管理個体10の表面18をレーザ加工によって整地して、図6Bに示すように平面状のベース面14を形成する下地加工を行う。下地加工は、例えば、レーザ光を横方向に直線状に移動させることを縦方向に順次位置をずらしながら繰り返し行う。被管理個体10の表面の凹凸が大きい場合は、凹凸の状態に応じてレーザ光の強弱を制御することもできる。このようにして、被管理個体10に、鋳肌の状態よりも平らな平面状のベース面14を形成する。
例えば、四つの壁面30を形成する範囲は密とすることで、壁面30の平面度を高くし、平面度を必要としない底面32を形成する範囲が粗となるように設定されている。
ここで、ドット凹部15を形成する際に溶けた被管理個体10の余肉は、ドット凹部15よりも外側に排出されることになり、ドット凹部15の開口の周囲においてベース面14よりも外側に突出する突出部21となる。ドット凹部15は、四角錐状となって突出部21よりも凹む。図1に示すように、このようなドット凹部15が複数、ドット配置可能位置の中から予め選択設定された位置に形成されることになる。そして、その後、レーザ光を、例えば横方向に直線状に移動させることを縦方向に順次位置をずらしながら繰り返し行うことでベース面14の煤を除去するクリーニングを行う。以上の刻印コード形成工程が実行されて、被管理個体10に刻印コード11が形成される。
なお、底部32に凹凸が出来てしまう場合は、底部の凹凸にレーザ光を照射してならす、底部ならし処理を行ってもよい。
なお、他の刻印工程としては、レーザ光の照射軌跡を上記と同様に図7に示すように、外側から内側に矩形状の螺旋を描き、次に、他のドット凹部15を同様に図7に示すように、外側から内側に矩形状の螺旋を描き、先ず、1段目を削る。この他のドット凹部15を削っている間に、その前に削ったドット凹部15は冷やされる。これを2度、3度繰り返す。この2度目、3度目は徐々に矩形状の螺旋の大きさを小さくすることで、2段目、3段目と深く削って、逆ピラミッド状の穴を形成する。この時斜面の段々は、レーザ光により多少溶けるので、平面な傾斜した壁面30が形成される。
よって、特許文献1のような解析装置によって、円形のドットを四角形に補正する補正処理や乱反射して白く認識する補正する補正処理を行う必要がない(さらに、精度を上げるために補正してもよい)。
また、表1の補正の要否は、市販されている読取装置で、刻印コード11,11Aを読み取った際に、上述のような補正処理を行うことなく、読取が可能かを調べた結果である。補正処理を行わなくて済むと、読み取り時間が短時間で済む。
他の変形例として、図20の直角な壁面30G1を最深部まで延ばし、傾斜した底側周壁面31G2を壁面30G1と交差する部分まで延ばし、壁面30を1つの面としてもよい。
また、上記各実施形態及び変形例は開口を四角形としたが、これが、最も望ましいが、開口を三角、5角、台形等の多角形や円形、楕円形にしてもよい。この場合、前述の補正処理が必要になる可能性がある。
以上のように、本実施形態では、刻印コードの開口側から垂直に侵入した光が垂直方向に戻らないように傾斜させた平面からなる壁面を設けることで、コーティング前後であっても平面の傾斜角は変化しないので、コーティング前後での読み取り精度が殆ど変化しないという優れた効果を有する。当然、コーティングしなくとも、読み取り精度が高いので、コーティングしない被管理個体に用いてもよい。
第1の態様としては、複数のドット凹部を有する刻印コードが形成された被管理個体であって、前記ドット凹部の開口周縁部が四角形状であり、該ドットの周囲から、該ドットの底部に向けて傾斜した平面を設ける。これにより、刻印コードが光学的に検出される場合に、ドット凹部が四角形状のドットとして検出されやすくなる。したがって刻印コードが良好に検出可能となる。
また、第7の態様としては、第6の態様において、メッキ層によりコーティングされて形成されている。
また、第8の態様としては、第7の態様において、電着塗装によりコーティングされて形成されている。
また、第11の態様としては、個体管理のための読取コードを被管理個体に刻印する刻印方法において、前記被管理個体の表面をレーザ光で平滑化する第1のステップと、前記平滑化された前記被管理個体の表面上に、レーザ光で前記読取コードを凹設する第2のステップと、を備え、前記第2のステップは、前記読取コードとして、複数個の凹状のドットを形成するステップであり、前記ドットは、開口部側から底部側に向けて傾斜する平面を形成する。
なお、本発明の平面(実施形態の壁面30)は、読み取りのための光の乱反射を少なくすることで、刻印コードが光学的に黒認識できる程度の平面であればよい。
11,11A~11C,11E~11G 刻印コード
15,15A,15B,15E~15G ドット凹部
30,30A,30B,30Ea,30Eb,30Fa,30Fb,30G1,30G2 壁面
32,32A 底面
100 ディスクブレーキ
110 キャリパボディ 200 シリンダ装置
210 シリンダ
212 ロッド
213 ピストン
Claims (11)
- 個体管理のための読取コードが刻印された被管理個体において、
前記読取コードは、所定領域の中に形成された複数個の凹状のドットからなり、
前記ドットの開口部側から底部側に向けて延びる傾斜した平面を備える被管理個体。 - 前記ドットの開口部は四角形状であり、傾斜した平面は少なくとも2つの対抗する一組平面である請求項1に記載の被管理個体。
- 前記傾斜した平面は、開口部の各辺に対応した4つの平面である請求項1に記載の被管理個体。
- 前記ドット凹部が四角錐状である、請求項1に記載の被管理個体。
- 前記ドット凹部の壁面と前記ドット凹部の深さ方向に直交する面とのなす角が25度以下である、請求項1に記載の被管理個体。
- 前記ドット凹部の底面が球面状である、請求項1から5のいずれか一項に記載の被管理個体。
- 前記ドット凹部がレーザ加工により形成されている、請求項1から6のいずれか一項に記載の被管理個体。
- 前記被管理個体の少なくとも前記ドット凹部にコーティング層が形成されている、請求項1から7のいずれか一項に記載の被管理個体。
- 前記コーティング層がメッキ層であることを特徴とする請求項8に記載の被管理個体。
- 前記コーティング層が電着塗装であることを特徴とする請求項9に記載の被管理個体。
- 個体管理のための読取コードを被管理個体に刻印する刻印方法において、
前記被管理個体の表面をレーザ光で平滑化する第1のステップと、
前記平滑化された前記被管理個体の表面上に、レーザ光で前記読取コードを凹設する第2のステップと、を備え、
前記第2のステップは、前記読取コードとして、複数個の凹状のドットを形成するステップであり、前記ドットは、開口部側から底部側に向けて傾斜する平面を形成する刻印方法。
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- 2016-06-14 JP JP2017526270A patent/JP6461341B2/ja active Active
- 2016-06-14 DE DE112016003020.7T patent/DE112016003020T5/de active Pending
- 2016-06-14 CN CN201680035916.8A patent/CN107710232B/zh active Active
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JPH06266871A (ja) * | 1993-03-16 | 1994-09-22 | Fuji Electric Co Ltd | ピクセルコードのマーキング方法 |
JP2006036443A (ja) * | 2004-07-26 | 2006-02-09 | Kyodo Printing Co Ltd | 流通情報管理システム |
JP2010009274A (ja) * | 2008-06-26 | 2010-01-14 | Sumitomo Metal Ind Ltd | 二次元コード読取装置、二次元コード読取方法、中心軸に直交する断面が略円形の部材の製造履歴情報管理方法、及び、該管理方法を用いた前記部材の製造方法 |
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CN107710232B (zh) | 2021-05-04 |
DE112016003020T5 (de) | 2018-03-15 |
JPWO2017002604A1 (ja) | 2018-03-01 |
JP6461341B2 (ja) | 2019-01-30 |
CN107710232A (zh) | 2018-02-16 |
US10489697B2 (en) | 2019-11-26 |
MX2017016898A (es) | 2018-04-10 |
US20180174007A1 (en) | 2018-06-21 |
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