US20190061093A1 - Dressing board, use method of dressing board, and cutting apparatus - Google Patents
Dressing board, use method of dressing board, and cutting apparatus Download PDFInfo
- Publication number
- US20190061093A1 US20190061093A1 US16/101,792 US201816101792A US2019061093A1 US 20190061093 A1 US20190061093 A1 US 20190061093A1 US 201816101792 A US201816101792 A US 201816101792A US 2019061093 A1 US2019061093 A1 US 2019061093A1
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- United States
- Prior art keywords
- dressing board
- dressing
- properties
- cutting
- cutting blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/0683—Accessories therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67092—Apparatus for mechanical treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/0608—Grinders for cutting-off using a saw movable on slideways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/18—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the presence of dressing tools
- B24B49/186—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the presence of dressing tools taking regard of the wear of the dressing tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/003—Devices or means for dressing or conditioning abrasive surfaces using at least two conditioning tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67282—Marking devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67294—Apparatus for monitoring, sorting or marking using identification means, e.g. labels on substrates or labels on containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
Definitions
- the present invention relates to a dressing board used when dressing of a cutting blade is carried out, a use method of a dressing board, and a cutting apparatus including a cutting unit.
- a manufacturing process of device chips planned dividing lines in a lattice manner called streets are set on surfaces of wafers and devices are formed in the respective regions marked out by the planned dividing lines. When these wafers are cut along the planned dividing lines, individual device chips are formed.
- the wafers are wafer for semiconductor devices formed of silicon, gallium arsenide, or the like, wafer for optical devices formed of SiC (silicon carbide) or the like, package substrate including resin and metal, ceramic substrate, glass substrate, and so forth.
- the cutting is carried out by a cutting apparatus having a cutting unit including a cutting blade having a circular ring shape for example.
- the cutting unit has a spindle that serves as the axis of rotation and has a circular column shape and the cutting blade is mounted to the tip of the spindle.
- a proper cutting blade is selected depending on the type of workpiece and the contents of processing.
- the cutting blade is rotated by rotating the spindle, and a workpiece is cut when the rotating cutting blade is brought into contact with the workpiece.
- the cutting blade has a cutting abrasive containing abrasive grains and a bond material that holds the abrasive grains.
- the abrasive grains In the state in which the abrasive grains are moderately exposed from the bond material, the abrasive grains get contact with a workpiece and thus the workpiece can be properly cut. However, in the case of an unused cutting blade or a cutting blade that has been worn and be lowered in the cutting capability, the abrasive grains are buried in the bond material or dropping-off of the abrasive grains from the bond material, or the like, has occurred, and the cutting blade is not in the state in which proper cutting can be carried out in many cases. Thus, the cutting blade is adjusted by processing called dressing. The dressing is carried out by causing a cutting blade to cut a dressing board. When cutting the dressing board, the cutting blade is properly worn and the abrasive grains are moderately exposed from the bond material.
- the distance from the rotation axis to the outer circumference of the cutting blade is not uniform in the whole circumference in some cases.
- the part at which the distance from the rotation axis is longer is worn intensely compared with the part at which the distance from the rotation axis is shorter and the distance from the rotation axis to the outer circumference becomes uniform in the whole circumference, so that the cutting blade becomes the state in which proper cutting can be carried out.
- the dressing of the cutting blade is carried out for the purposes of moderately exposing the abrasive grains from the bond material (referred to also as blade sharpening) and making the distance from the rotation axis to the outer circumference uniform (referred to also as roundness generation).
- the amount of information that can be stored in the barcode is small and the information that can be stored in the barcode and relates to the dressing board is limited.
- a two-dimensional code with which the amount of information that can be stored is comparatively large, is disposed on the dressing board instead of the barcode.
- the dressing board can be efficiently used.
- the region in which the two-dimensional code is disposed is cut by a cutting blade even partly, the two-dimensional code becomes unreadable. For this reason, when use of the dressing board is suspended once and the dressing board is removed from a cutting apparatus and thereafter using the dressing board again is attempted, it is impossible to check the information relating to the dressing board from the two-dimensional code in some cases.
- the present invention is made in view of these problems and an object thereof is to provide a dressing board that allows acquisition of information relating to the dressing board even when being cut by a cutting blade, a use method of the dressing board, and a cutting apparatus.
- a dressing board used when dressing of a cutting blade is carried out.
- the dressing board includes a two-dimensional code that is disposed on a surface of the dressing board and includes information relating to properties of the dressing board and a barcode that is disposed on the surface of the dressing board and includes identification information associated with the information relating to the properties.
- the information relating to the properties includes information relating to abrasive grains of the dressing board, a bond material of the dressing board, the size of the dressing board, or a product type of the cutting blade that corresponds.
- a use method of a dressing board having, on a surface, a two-dimensional code including information relating to properties of the dressing board and a barcode including identification information associated with the information relating to the properties.
- a cutting apparatus is used in the use method.
- the cutting apparatus includes a chuck table that holds a workpiece, a cutting unit that cuts the workpiece held by the chuck table by a cutting blade, a control unit that includes an information registration part and controls each constituent element, and an imaging unit connected to the control unit.
- the use method includes a dressing board disposing step of disposing the dressing board in the cutting apparatus, an identification information reading step of imaging the barcode of the dressing board disposed in the disposing step by the imaging unit and reading the identification information from the barcode, and an information registration step of determining whether or not the identification information has been already registered in the information registration part and, if the identification information has not been registered in the information registration part, reading the information relating to the properties from the two-dimensional code to register the information relating to the properties in the information registration part in association with the identification information.
- a use method of a dressing board having, on a surface, a two-dimensional code including information relating to properties of the dressing board and a barcode including identification information associated with the information relating to the properties.
- a cutting apparatus is used in the use method.
- the cutting apparatus includes a chuck table that holds a workpiece, a cutting unit that cuts the workpiece held by the chuck table by a cutting blade, a control unit that controls each constituent element, and an imaging unit connected to the control unit.
- the control unit includes an information registration part in which the identification information included in the barcode possessed by the dressing board and the information relating to the properties, included in the two-dimensional code, are registered in association with each other in advance and a specifying part in which a kind of dressing board suitable for dressing of the cutting blade is registered.
- the use method includes a dressing board disposing step of disposing the dressing board in the cutting apparatus, an identification information reading step of imaging the barcode of the dressing board disposed in the disposing step by the imaging unit and reading the identification information from the barcode, a determination step of reading out, from the information registration part, the information relating to the properties associated with the identification information read in the identification information reading step and determining whether or not the properties of the dressing board included in the information relating to the properties match the kind of dressing board suitable for dressing of the cutting blade, registered in the specifying part, and an informing step of informing that the dressing board is improper if the properties of the dressing board do not match the kind of dressing board suitable for dressing of the cutting blade.
- a cutting apparatus including a chuck table that holds a workpiece, a first cutting unit that cuts the workpiece held by the chuck table by a first cutting blade, a control unit that controls each constituent element, and an imaging unit connected to the control unit.
- the control unit includes a reading part that is connected to the imaging unit and reads a barcode and a two-dimensional code that are possessed by a dressing board disposed in the cutting apparatus, an information registration part in which identification information read from the barcode by the reading part and information relating to properties of the dressing board, read from the two-dimensional code, are registered in association with each other, a specifying part in which a kind of dressing board suitable for dressing of the first cutting blade is registered, and a determining part that determines whether or not the properties of the dressing board included in the information relating to the properties read out from the information registration part based on the identification information read by the reading part match the kind of dressing board suitable for dressing of the first cutting blade, registered in the specifying part.
- the cutting apparatus includes a first dress table that holds the dressing board. Furthermore, the cutting apparatus further includes a second cutting unit that cuts the workpiece held by the chuck table by a second cutting blade and a second dress table that holds a second dressing board used when dressing of the second cutting blade is carried out.
- the two-dimensional code including the information relating to the properties of the dressing board and the barcode including the identification information associated with the information relating to the properties are disposed on the surface.
- the identification information can be acquired from the barcode and the information relating to the properties can be acquired from the two-dimensional code.
- the information relating to the properties can be registered in association with the identification information.
- the two-dimensional code cannot be read in some cases although reading the two-dimensional code is attempted when the dressing board is used again after being removed from the cutting apparatus once.
- the identification information can be read from the barcode left on the surface between two adjacent cut grooves among cut grooves formed due to the cutting. For this reason, if the information relating to the properties stored in the two-dimensional code is registered in the cutting apparatus in association with the identification information in advance, the information relating to the properties can be extracted from the identification information.
- a dressing board that allows acquisition of information relating to the dressing board even when being cut by a cutting blade, a use method of the dressing board, and a cutting apparatus are provided by the present invention.
- FIG. 1 is a perspective view schematically depicting a dressing board
- FIG. 2 is a perspective view schematically depicting a cutting apparatus
- FIG. 3 is a side view for explaining the positional relationship among a cutting unit, a chuck table, a dress table, and an imaging camera of the cutting apparatus;
- FIG. 4A is a flowchart for explaining a method in which identification information of the dressing board and information relating to properties are registered in an information registration part in association with each other;
- FIG. 4B is a flowchart for explaining a method in which it is determined whether or not the properties of the dressing board are suitable for dressing of a cutting blade;
- FIG. 5A is a top view schematically depicting dressing of the cutting blade by use of the dressing board
- FIG. 5B is a top view schematically depicting the dressing board used for the dressing.
- FIG. 6 is a block diagram for schematically explaining the configuration of a control unit and various kinds of information.
- the embodiment of the present invention is a dressing board, a use method of a dressing board, and a cutting apparatus.
- FIG. 1 is a perspective view schematically depicting the dressing board according to the present embodiment.
- a barcode 3 and a two-dimensional code 5 are disposed on a surface of a dressing board 1 .
- the dressing board 1 is used for dressing of a cutting blade mounted to a cutting apparatus.
- the cutting blade has a cutting abrasive containing abrasive grains and a bond material (binging material) that holds the abrasive grains. In the state in which the abrasive grains are moderately exposed from the bond material, the abrasive grains can get contact with a workpiece and thus the workpiece can be properly cut.
- the abrasive grains are buried in the bond material or dropping-off of the abrasive grains from the bond material, or the like, has occurred, and the cutting blade is not in the state in which proper cutting can be carried out in many cases.
- the cutting blade is adjusted by processing called dressing in which the cutting blade is caused to cut the dressing board.
- dressing When cutting the dressing board, the cutting blade is properly worn and the abrasive grains are moderately exposed from the bond material, which provides the state in which proper cutting can be carried out.
- the distance from the rotation axis to the outer circumference of the cutting blade is not uniform in the whole circumference in some cases.
- the part at which the distance from the rotation axis is comparatively longer is worn more intensely relative to the part at which the distance from the rotation axis is comparatively shorter and the distance from the rotation axis to the outer circumference becomes uniform in the whole circumference, so that the cutting blade becomes the state in which proper cutting can be carried out.
- the dressing of the cutting blade is carried out for the purposes of moderately exposing the abrasive grains from the bond material (referred to also as blade sharpening) and making the distance from the rotation axis to the outer circumference uniform (referred to also as roundness generation).
- the dressing board also contains a bond material and abrasive grains.
- the bond material is resin, ceramics, or the like and the abrasive grains are green carborundum, white alundum, or the like.
- the size of the abrasive grains is typically #200 to #2000.
- a dressing board in which the bond material is hard or a dressing board in which the abrasive grains are large is used.
- a dressing board in which the bond material is soft or a dressing board in which the abrasive grains are small is used.
- the barcode 3 and the two-dimensional code 5 are disposed on the dressing board 1 according to the present embodiment.
- Identification information of the dressing board 1 is stored in the barcode 3 .
- the identification information is a unique number such as a manufacturing number of the dressing board 1 for example.
- the amount of information that can be stored in the barcode is comparatively small and it is impossible to store all of information relating to properties of the dressing board.
- the two-dimensional code 5 in which information relating to properties of the dressing board 1 is stored is disposed on the dressing board 1 .
- the information stored in the two-dimensional code 5 is product number, manufacturing number, manufacturing date, expiration date, size (vertical and horizontal lengths, thickness) of the dressing board 1 , the kinds of bond (binding material) and abrasive grains contained in the dressing board 1 , and so forth (see FIG. 6 ). Furthermore, information relating to the kind of cutting blade suitable for dressing with the dressing board 1 may be stored.
- FIG. 2 is a perspective view schematically depicting the cutting apparatus 2 .
- the cutting apparatus 2 includes a base 4 that supports the respective structures.
- a rectangular opening 4 a is formed at a corner part on the front side of the base 4 and a cassette support base 6 that ascends and descends is provided in the opening 4 a.
- a cassette 8 that houses plural workpieces 11 is placed on the upper surface of the cassette support base 6 .
- FIG. 2 only the contour of the cassette 8 is depicted for convenience of explanation.
- the workpiece 11 is a circular wafer composed of a semiconductor material such as silicon for example and the front surface side thereof is divided into a device region at the center and a peripheral surplus region surrounding the device region.
- the device region 15 is further segmented into plural regions by planned dividing lines (streets) arranged in a lattice manner and a device such as integrated circuit (IC) or large scale integration (LSI) is formed in each region.
- IC integrated circuit
- LSI large scale integration
- a dicing tape 17 with a diameter larger than the workpiece 11 is stuck to the back surface side of the workpiece 11 .
- the peripheral part of the dicing tape 17 is fixed to a ring-shaped frame 19 . That is, the workpiece 11 is supported by the frame 19 with the intermediary of the dicing tape 17 .
- a circular wafer composed of a semiconductor material such as silicon is employed as the workpiece 11 in the present embodiment
- a rectangular substrate composed of a material such as ceramics, resin, or metal is employed as the workpiece 11 in the present embodiment.
- An opening 4 b having a rectangular shape long in an X-axis direction (front-rear direction, processing-feed direction) is formed on a lateral side of the cassette support base 6 .
- an X-axis movement table 10 In the opening 4 b, an X-axis movement table 10 , an X-axis movement mechanism (not depicted) that moves the X-axis movement table 10 in the X-axis direction, and a dust-proof, splash-proof cover 12 that covers the X-axis movement mechanism are provided.
- the X-axis movement mechanism includes a pair of X-axis guide rails (not depicted) parallel to the X-axis direction and the X-axis movement table 10 is slidably attached to the X-axis guide rails.
- a nut part (not depicted) is provided on the lower surface side of the X-axis movement table 10 and an X-axis ball screw (not depicted) parallel to the X-axis guide rails is screwed to this nut part.
- An X-axis pulse motor (not depicted) is joined to one end part of the X-axis ball screw. The X-axis ball screw is rotated by the X-axis pulse motor and thereby the X-axis movement table 10 moves in the X-axis direction along the X-axis guide rails.
- a chuck table 14 for holding the workpiece 11 is provided above the X-axis movement table 10 .
- the chuck table 14 is joined to a rotation drive source (not depicted) such as a motor and rotates around a rotation axis substantially parallel to a Z-axis direction (vertical direction). Furthermore, processing feed of the chuck table 14 is carried out in the X-axis direction by the above-described X-axis movement mechanism.
- the upper surface of the chuck table 14 serves as a holding surface 14 a that holds the workpiece 11 .
- the holding surface 14 a is connected to a suction source (not depicted) through a suction path and so forth formed inside the chuck table 14 .
- a conveying unit (not depicted) that conveys the above-described workpiece 11 to the chuck table 14 is provided at a position near the opening 4 b.
- the workpiece 11 conveyed to the conveying unit is placed on the holding surface 14 a of the chuck table 14 in such a manner that the front surface side is exposed upward for example.
- a gate-shaped support structure 24 for supporting two sets of cutting units 22 is disposed to straddle the opening 4 b.
- two sets of cutting unit movement mechanisms 26 that move the respective cutting units 22 in a Y-axis direction (right-left direction, indexing-feed direction) and the Z-axis direction are provided.
- the respective cutting unit movement mechanisms 26 include, in common, a pair of Y-axis guide rails 28 that are disposed on the front surface of the support structure 24 and are parallel to the Y-axis direction.
- Y-axis movement plates 30 that form the respective cutting unit movement mechanisms 26 are slidably attached to the Y-axis guide rails 28 .
- a nut part (not depicted) is provided on the back surface side (rear surface side) of each Y-axis movement plate 30 and Y-axis ball screws 32 parallel to the Y-axis guide rails 28 are each screwed to this nut part.
- a Y-axis pulse motor 34 is joined to one end part of each Y-axis ball screw 32 . When the Y-axis ball screw 32 is rotated by the Y-axis pulse motor 34 , the Y-axis movement plate 30 moves in the Y-axis direction along the Y-axis guide rails 28 .
- a pair of Z-axis guide rails 36 parallel to the Z-axis direction are provided on a surface (front surface) of each Y-axis movement plate 30 .
- Z-axis movement plates 38 are slidably attached to the Z-axis guide rails 36 .
- a nut part (not depicted) is provided on the back surface side (rear surface side) of each Z-axis movement plate 38 and Z-axis ball screws 40 parallel to the Z-axis guide rails 36 are each screwed to this nut part.
- a Z-axis pulse motor 42 is joined to one end part of each Z-axis ball screw 40 . When the Z-axis ball screw 40 is rotated by the Z-axis pulse motor 42 , the Z-axis movement plate 38 moves in the Z-axis direction along the Z-axis guide rails 36 .
- the cutting unit 22 is provided at the lower part of each Z-axis movement plate 38 .
- the cutting unit 22 includes a circular-ring-shaped cutting blade 46 (see FIG. 3 and FIG. 5A ) mounted to one end side of a spindle 44 (see FIG. 5A ) serving as a rotation axis.
- imaging cameras (imaging units) 48 that image the workpiece 11 and so forth are provided at positions adjacent to the cutting units 22 .
- a circular opening 4 c is formed at a position on the opposite side to the opening 4 a across the opening 4 b.
- a cleaning unit 50 for cleaning the workpiece 11 and so forth after cutting is provided.
- a control unit (control means) 52 is connected to constituent elements such as the X-axis movement mechanism, the chuck table 14 , the cutting units 22 , the cutting unit movement mechanisms 26 , the imaging cameras 48 , and the cleaning unit 50 . Each constituent element is controlled by this control unit (control means) 52 .
- FIG. 3 is a side view for explaining the positional relationship among the cutting unit 22 , the chuck table 14 , the dress table 54 , and the imaging camera 48 of the cutting apparatus 2 .
- the imaging camera 48 in the state of being positioned at a position to image the dressing board 1 and the cutting blade 46 in the state of being positioned at a position to carry out cutting processing of the workpiece 11 are simultaneously depicted.
- FIG. 3 because of the configuration of the cutting apparatus 2 depicted in FIG. 1 , it is impossible to simultaneously position, individually, the imaging camera 48 and the cutting blade 46 in this manner.
- they are each represented in the state of being positioned in this manner for convenience of explanation.
- the dress table 54 is disposed on the rear end side of the chuck table 14 of the X-axis movement table 10 .
- the dress table 54 is fixed to the upper surface of the rear end side of the X-axis movement table 10 .
- the upper surface of the dress table 54 is a holding surface 54 a that holds the dressing board 1 .
- a suction groove having a cross shape in plan view is formed in the holding surface 54 a and a suction hole is formed at the center of the cross.
- the suction hole leads to a suction source, which is not depicted in the diagram, through a suction path (not depicted) inside the dress table 54 .
- Dressing of the cutting blade 46 may be carried out over the chuck table 14 , with the dressing board 1 held on the holding surface 14 a of the chuck table 14 .
- the dressing board 1 held by the chuck table 14 needs to be removed and the workpiece 11 needs to be held instead.
- the dress table 54 is disposed on the rear end side of the chuck table 14 of the X-axis movement table 10 . If the dress table 54 is disposed on the front end side of the chuck table 14 , cutting chips generated from the dressing board 1 are scattered onto the chuck table 14 and the chuck table 14 is polluted.
- the imaging camera 48 is used to check a key pattern or planned cutting line used when the workpiece 11 is imaged and the position of cutting is figured out in cutting processing of the workpiece 11 held by the chuck table 14 . Furthermore, the imaging camera 48 can move to a position above the dress table 54 and image the dressing board 1 held by the holding surface 54 a. Image data obtained by the imaging is sent to a reading part 52 b of the control unit 52 of the cutting apparatus 2 .
- control unit 52 is management apparatus of the cutting apparatus 2 for example and the respective constituent elements to be described below in the control unit 52 and functions thereof may be implemented as a program by the management apparatus.
- the control unit 52 has the reading part 52 b and the reading part 52 b reads the barcode 3 and the two-dimensional code 5 that appear in a captured image received from the imaging camera 48 . Then, the reading part 52 b acquires the identification information of the dressing board 1 from the barcode 3 and acquires information relating to properties of the dressing board 1 from the two-dimensional code 5 .
- the reading part 52 b has a function of sending the acquired informations to an information registration part 52 a and a determining part 52 c.
- the reading part 52 b has a function of sending, to the information registration part 52 a, a signal indicating that the two-dimensional code 5 cannot be read to the information registration part 52 a and the identification information acquired from the barcode 3 if the two-dimensional code 5 of the dressing board 1 cannot be read due to damage or the like.
- the identification information of the dressing board 1 and the information relating to the properties are registered in association with each other.
- the information registration part 52 a has a function of sending the information relating to the properties associated with the identification information to the determining part 52 c when receiving the signal indicating that the two-dimensional code 5 cannot be read and the identification information.
- a specifying part 52 d information relating to the kind of dressing board 1 suitable for dressing of the cutting blade 46 mounted to the cutting apparatus 2 is registered.
- the information is input by a worker whose has mounted the cutting blade 46 to the cutting apparatus 2 for example.
- the specifying part 52 d has a function of sending the information to the determining part 52 c in response to a request by the determining part 52 c.
- information relating to the kinds of dressing board 1 suitable for dressing regarding various kinds of cutting blade 46 may be registered in advance.
- the worker may register the kind of cutting blade 46 in the specifying part 52 d in advance and the specifying part 52 d may transmit information relating to the kind of dressing board suitable for dressing of the registered kind of cutting blade 46 to the determining part 52 c.
- the determining part 52 c has a function of determining whether or not the dressing board 1 disposed in the cutting apparatus 2 matches the kind of dressing board suitable for dressing of the cutting blade 46 mounted to the cutting apparatus 2 .
- the determining part 52 c obtains the information relating to the kind of dressing board suitable for dressing of the cutting blade 46 from the specifying part 52 d and carries out the determination.
- the cutting apparatus 2 may have a configuration in which dressing can be independently carried out for each of the first and second cutting blades 46 mounted to the two cutting units 22 .
- the cutting apparatus 2 may include a first dress table that holds the first dressing board 1 with which dressing of the first cutting blade 46 is carried out and a second dress table that holds the second dressing board 1 with which dressing of the second cutting blade 46 is carried out.
- FIG. 4A is a flowchart for explaining the use method of the dressing board 1 .
- a dressing board disposing step of disposing the dressing board 1 in the cutting apparatus 2 is carried out.
- the dressing board 1 is disposed on the dress table 54 (see FIG. 2 ) of the cutting apparatus 2 or the chuck table 14 (see FIG. 2 ).
- an identification information reading step of imaging the barcode 3 of the dressing board 1 by the imaging camera (imaging unit) 48 and reading the identification information from the barcode 3 is carried out.
- the dressing board 1 is positioned below the imaging camera 48 and the imaging camera 48 is caused to image the dressing board 1 .
- the obtained captured image is sent to the reading part 52 b of the control unit 52 .
- the identification information of the dressing board 1 is acquired from the barcode 3 that appears in the captured image.
- an information registration step of registering the information relating to the properties in the information registration part 52 a in association with the identification information is carried out.
- the information registration step in order to prevent duplicate registration in the information registration part 52 a, first it is determined whether or not the identification information acquired from the barcode 3 has been already registered in the information registration part 52 a. If the identification information has not been registered in the information registration part 52 a, the information relating to the properties is read from a two-dimensional code that appears in the captured image and the information relating to the properties of the dressing board 1 is registered in the information registration part 52 a in association with the identification information.
- the information on the dressing board 1 is not registered in the information registration part 52 a because duplicate registration is unnecessary.
- the information relating to the properties can be registered in the cutting apparatus 2 in association with the identification information. The registration is automatically carried out by the cutting apparatus 2 . Therefore, an operator or the like of the cutting apparatus 2 does not need input the information and the possibility of erroneous input also does not exist.
- FIG. 5A is a top view schematically depicting dressing of a cutting blade by use of a dressing board
- FIG. 5B is a top view schematically depicting the dressing board used for the dressing.
- the spindle 44 of the cutting unit 22 is rotated to rotate the cutting blade 46 .
- the X-axis movement table 10 is moved along the X-axis direction and the cutting blade 46 is caused to cut into the dressing board 1 .
- a cut groove 21 along the X-axis direction is formed in the dressing board 1 .
- the cutting blade 46 is shifted in the Y-axis direction and is caused to repeatedly cut the dressing board 1 until the dressing of the cutting blade 46 is completed.
- the cutting blade 46 to cut the whole surface of the dressing board 1 thoroughly.
- the region in which the two-dimensional code 5 is disposed is cut by the cutting blade 46 even partly, the two-dimensional code 5 becomes unreadable.
- the cut grooves 21 that overlap with the two-dimensional code 5 are formed and the two-dimensional code 5 is unreadable.
- the information relating to the properties can be acquired by a use method of the dressing board 1 to be described next because the information relating to the properties is registered in the cutting apparatus 2 in association with the identification information stored in the barcode 3 .
- the use method can be carried out also when the two-dimensional code 5 is readable.
- FIG. 4B is a flowchart for explaining the use method of the dressing board 1 .
- the dressing board disposing step of disposing the dressing board 1 in the cutting apparatus 2 and the identification information reading step of reading the identification information from the barcode 3 are carried out.
- the identification information reading step of reading the identification information from the barcode 3 are carried out.
- whether or not the two-dimensional code 5 of the dressing board 1 is readable is determined. If the two-dimensional code 5 can be read from a captured image acquired by the imaging camera 48 , the information relating to the properties of the dressing board 1 is acquired from the two-dimensional code 5 .
- the two-dimensional code 5 cannot be read from the captured image, for example the barcode 3 left in the gap between two adjacent cut grooves 21 is read and the identification information is acquired as depicted in FIG. 5B . Then, reference to the information registration part 52 a is made based on the identification information and the information relating to the properties associated with the identification information is acquired from the information registration part 52 a.
- the information relating to the properties associated with the identification information may be acquired from the information registration part 52 a without determining whether or not the two-dimensional code 5 is readable. In this case, it is checked in advance whether or not the information relating to the properties associated with the identification information has been registered in the information registration part 52 a, and the registered information is acquired if the registration can be confirmed. If the registration cannot be registered, the information relating to the properties is read from the two-dimensional code 5 and is registered in the information registration part 52 a in association with the identification information.
- the barcode 3 becomes unreadable if the barcode 3 is cut along the longitudinal direction of each bar forming the barcode 3 and even one of the bars is lost. For this reason, the barcode 3 is disposed in such a manner that each bar does not extend along the extension direction of the cut grooves 21 formed through cutting of the dressing board 1 .
- the properties of the dressing board 1 included in the information relating to the properties match the kind of dressing board suitable for dressing of the cutting blade 46 registered in the specifying part 52 d of the control unit 52 .
- FIG. 6 one example of each configuration of the control unit 52 , the identification information of the dressing board 1 and the information relating to properties, and information relating to specifying of the dressing board 1 registered in the specifying part 52 d is depicted. In the example depicted in FIG.
- the case is depicted in which the two-dimensional code 5 is unreadable and the reading part 52 b acquires the identification information from the barcode 3 and reference to the information registration part 52 a is made based on the identification information and the determining part 52 c acquires the information relating to the properties.
- the specifying part 52 d information relating to the type of dressing board 1 suitable for dressing of the cutting blade 46 attached to the cutting apparatus 2 is registered in advance for example. Furthermore, the product number of the dressing board suitable for dressing of the cutting blade 46 may be registered in the specifying part 52 d.
- the determination of whether or not the dressing board 1 disposed in the cutting apparatus 2 matches the kind of dressing board suitable for dressing of the cutting blade 46 is carried out in the determining part 52 c.
- the determining part 52 c acquires the information relating to the properties of the dressing board 1 from the information registration part 52 a and acquires the information relating to the kind of dressing board suitable for dressing from the specifying part 52 d. If the determining part 52 c determines that the properties of the dressing board 1 match the kind of dressing board suitable for dressing of the cutting blade 46 , the control unit 52 carries out dressing of the cutting blade 46 by using the dressing board 1 .
- the cutting apparatus 2 may have an alarm buzzer and an alarm sound may be issued if it is determined that the dressing board 1 is improper.
- the dressing board 1 When the dressing board 1 according to the present embodiment is used, information relating to the dressing board 1 can be acquired and dressing can be properly carried out even when the dressing board 1 is cut by a cutting blade.
- the present invention is not limited to the description of the above-described embodiment and can be carried out with various changes.
- the cutting apparatus 2 including the two cutting units 22 and the two dress tables 54 is described.
- the numbers of cutting units and dress tables included in the cutting apparatus 2 are not limited thereto and the cutting apparatus 2 may include one cutting unit and one dress table for example.
Abstract
Description
- The present invention relates to a dressing board used when dressing of a cutting blade is carried out, a use method of a dressing board, and a cutting apparatus including a cutting unit.
- In a manufacturing process of device chips, planned dividing lines in a lattice manner called streets are set on surfaces of wafers and devices are formed in the respective regions marked out by the planned dividing lines. When these wafers are cut along the planned dividing lines, individual device chips are formed. Among the wafers are wafer for semiconductor devices formed of silicon, gallium arsenide, or the like, wafer for optical devices formed of SiC (silicon carbide) or the like, package substrate including resin and metal, ceramic substrate, glass substrate, and so forth.
- The cutting is carried out by a cutting apparatus having a cutting unit including a cutting blade having a circular ring shape for example. The cutting unit has a spindle that serves as the axis of rotation and has a circular column shape and the cutting blade is mounted to the tip of the spindle. As the cutting blade, a proper cutting blade is selected depending on the type of workpiece and the contents of processing. The cutting blade is rotated by rotating the spindle, and a workpiece is cut when the rotating cutting blade is brought into contact with the workpiece. The cutting blade has a cutting abrasive containing abrasive grains and a bond material that holds the abrasive grains. In the state in which the abrasive grains are moderately exposed from the bond material, the abrasive grains get contact with a workpiece and thus the workpiece can be properly cut. However, in the case of an unused cutting blade or a cutting blade that has been worn and be lowered in the cutting capability, the abrasive grains are buried in the bond material or dropping-off of the abrasive grains from the bond material, or the like, has occurred, and the cutting blade is not in the state in which proper cutting can be carried out in many cases. Thus, the cutting blade is adjusted by processing called dressing. The dressing is carried out by causing a cutting blade to cut a dressing board. When cutting the dressing board, the cutting blade is properly worn and the abrasive grains are moderately exposed from the bond material.
- Furthermore, when an unused cutting blade is mounted to the cutting unit, the distance from the rotation axis to the outer circumference of the cutting blade is not uniform in the whole circumference in some cases. When such a cutting blade is subjected to dressing, the part at which the distance from the rotation axis is longer is worn intensely compared with the part at which the distance from the rotation axis is shorter and the distance from the rotation axis to the outer circumference becomes uniform in the whole circumference, so that the cutting blade becomes the state in which proper cutting can be carried out. As above, the dressing of the cutting blade is carried out for the purposes of moderately exposing the abrasive grains from the bond material (referred to also as blade sharpening) and making the distance from the rotation axis to the outer circumference uniform (referred to also as roundness generation). Various kinds of dressing boards exist and the proper kind of dressing board is used according to the kind of cutting blade and the purpose of dressing. In order to carry out dressing properly and efficiently, a wide variety of dressing boards and cutting apparatuses have been developed (refer to Japanese Patent Laid-Open Nos. 2006-218571, 2011-11280, and 2011-16175).
- If an improper kind of dressing board is accidentally used when dressing of a cutting blade is carried out, breaking occurs in the cutting blade or the state of blade sharpening deteriorates in some cases. Thus, in order to prevent erroneous use of the dressing board, a technique in which a barcode (one-dimensional code) in which information relating to a dressing board is stored is printed on a surface of the dressing board has been proposed (Japanese Patent Laid-Open No. 2012-66328). When the dressing board is used, the barcode is read and the information is checked by a cutting apparatus.
- However, the amount of information that can be stored in the barcode is small and the information that can be stored in the barcode and relates to the dressing board is limited. Thus, it is conceivable that a two-dimensional code, with which the amount of information that can be stored is comparatively large, is disposed on the dressing board instead of the barcode. When the whole surface of the dressing board is employed as the region that can be cut for dressing thoroughly, the dressing board can be efficiently used. However, when the region in which the two-dimensional code is disposed is cut by a cutting blade even partly, the two-dimensional code becomes unreadable. For this reason, when use of the dressing board is suspended once and the dressing board is removed from a cutting apparatus and thereafter using the dressing board again is attempted, it is impossible to check the information relating to the dressing board from the two-dimensional code in some cases.
- The present invention is made in view of these problems and an object thereof is to provide a dressing board that allows acquisition of information relating to the dressing board even when being cut by a cutting blade, a use method of the dressing board, and a cutting apparatus.
- In accordance with an aspect of the present invention, there is provided a dressing board used when dressing of a cutting blade is carried out. The dressing board includes a two-dimensional code that is disposed on a surface of the dressing board and includes information relating to properties of the dressing board and a barcode that is disposed on the surface of the dressing board and includes identification information associated with the information relating to the properties.
- Preferably, the information relating to the properties includes information relating to abrasive grains of the dressing board, a bond material of the dressing board, the size of the dressing board, or a product type of the cutting blade that corresponds.
- Furthermore, in accordance with another aspect of the present invention, there is provided a use method of a dressing board having, on a surface, a two-dimensional code including information relating to properties of the dressing board and a barcode including identification information associated with the information relating to the properties. A cutting apparatus is used in the use method. The cutting apparatus includes a chuck table that holds a workpiece, a cutting unit that cuts the workpiece held by the chuck table by a cutting blade, a control unit that includes an information registration part and controls each constituent element, and an imaging unit connected to the control unit. The use method includes a dressing board disposing step of disposing the dressing board in the cutting apparatus, an identification information reading step of imaging the barcode of the dressing board disposed in the disposing step by the imaging unit and reading the identification information from the barcode, and an information registration step of determining whether or not the identification information has been already registered in the information registration part and, if the identification information has not been registered in the information registration part, reading the information relating to the properties from the two-dimensional code to register the information relating to the properties in the information registration part in association with the identification information.
- In addition, in accordance with another aspect of the present invention, there is provided a use method of a dressing board having, on a surface, a two-dimensional code including information relating to properties of the dressing board and a barcode including identification information associated with the information relating to the properties. A cutting apparatus is used in the use method. The cutting apparatus includes a chuck table that holds a workpiece, a cutting unit that cuts the workpiece held by the chuck table by a cutting blade, a control unit that controls each constituent element, and an imaging unit connected to the control unit. The control unit includes an information registration part in which the identification information included in the barcode possessed by the dressing board and the information relating to the properties, included in the two-dimensional code, are registered in association with each other in advance and a specifying part in which a kind of dressing board suitable for dressing of the cutting blade is registered. The use method includes a dressing board disposing step of disposing the dressing board in the cutting apparatus, an identification information reading step of imaging the barcode of the dressing board disposed in the disposing step by the imaging unit and reading the identification information from the barcode, a determination step of reading out, from the information registration part, the information relating to the properties associated with the identification information read in the identification information reading step and determining whether or not the properties of the dressing board included in the information relating to the properties match the kind of dressing board suitable for dressing of the cutting blade, registered in the specifying part, and an informing step of informing that the dressing board is improper if the properties of the dressing board do not match the kind of dressing board suitable for dressing of the cutting blade.
- Moreover, in accordance with another aspect of the present invention, there is provided a cutting apparatus including a chuck table that holds a workpiece, a first cutting unit that cuts the workpiece held by the chuck table by a first cutting blade, a control unit that controls each constituent element, and an imaging unit connected to the control unit. The control unit includes a reading part that is connected to the imaging unit and reads a barcode and a two-dimensional code that are possessed by a dressing board disposed in the cutting apparatus, an information registration part in which identification information read from the barcode by the reading part and information relating to properties of the dressing board, read from the two-dimensional code, are registered in association with each other, a specifying part in which a kind of dressing board suitable for dressing of the first cutting blade is registered, and a determining part that determines whether or not the properties of the dressing board included in the information relating to the properties read out from the information registration part based on the identification information read by the reading part match the kind of dressing board suitable for dressing of the first cutting blade, registered in the specifying part.
- Preferably, the cutting apparatus includes a first dress table that holds the dressing board. Furthermore, the cutting apparatus further includes a second cutting unit that cuts the workpiece held by the chuck table by a second cutting blade and a second dress table that holds a second dressing board used when dressing of the second cutting blade is carried out.
- For the dressing board according to one aspect of the present invention, the two-dimensional code including the information relating to the properties of the dressing board and the barcode including the identification information associated with the information relating to the properties are disposed on the surface. Thus, by imaging the dressing board by the imaging unit or the like, the identification information can be acquired from the barcode and the information relating to the properties can be acquired from the two-dimensional code. In the control unit of the cutting apparatus according to one aspect of the present invention, the information relating to the properties can be registered in association with the identification information.
- When dressing by use of the dressing board is carried out and the two-dimensional code printed on the dressing board is cut even partly, it becomes impossible to read the information relating to the properties from the two-dimensional code. Thus, the two-dimensional code cannot be read in some cases although reading the two-dimensional code is attempted when the dressing board is used again after being removed from the cutting apparatus once. However, the identification information can be read from the barcode left on the surface between two adjacent cut grooves among cut grooves formed due to the cutting. For this reason, if the information relating to the properties stored in the two-dimensional code is registered in the cutting apparatus in association with the identification information in advance, the information relating to the properties can be extracted from the identification information.
- As above, a dressing board that allows acquisition of information relating to the dressing board even when being cut by a cutting blade, a use method of the dressing board, and a cutting apparatus are provided by the present invention.
- The above and other objects, features and advantages of the present invention and the manner of realizing them will become more apparent, and the invention itself will best be understood from a study of the following description and appended claims with reference to the attached drawings showing a preferred embodiment of the invention.
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FIG. 1 is a perspective view schematically depicting a dressing board; -
FIG. 2 is a perspective view schematically depicting a cutting apparatus; -
FIG. 3 is a side view for explaining the positional relationship among a cutting unit, a chuck table, a dress table, and an imaging camera of the cutting apparatus; -
FIG. 4A is a flowchart for explaining a method in which identification information of the dressing board and information relating to properties are registered in an information registration part in association with each other; -
FIG. 4B is a flowchart for explaining a method in which it is determined whether or not the properties of the dressing board are suitable for dressing of a cutting blade; -
FIG. 5A is a top view schematically depicting dressing of the cutting blade by use of the dressing board; -
FIG. 5B is a top view schematically depicting the dressing board used for the dressing; and -
FIG. 6 is a block diagram for schematically explaining the configuration of a control unit and various kinds of information. - An embodiment relating to one aspect of the present invention will be described with reference to the accompanying drawings. The embodiment of the present invention is a dressing board, a use method of a dressing board, and a cutting apparatus.
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FIG. 1 is a perspective view schematically depicting the dressing board according to the present embodiment. As depicted inFIG. 1 , abarcode 3 and a two-dimensional code 5 are disposed on a surface of a dressingboard 1. The dressingboard 1 is used for dressing of a cutting blade mounted to a cutting apparatus. The cutting blade has a cutting abrasive containing abrasive grains and a bond material (binging material) that holds the abrasive grains. In the state in which the abrasive grains are moderately exposed from the bond material, the abrasive grains can get contact with a workpiece and thus the workpiece can be properly cut. However, in the case of an unused cutting blade or a cutting blade that has been worn and be lowered in the cutting capability, the abrasive grains are buried in the bond material or dropping-off of the abrasive grains from the bond material, or the like, has occurred, and the cutting blade is not in the state in which proper cutting can be carried out in many cases. Thus, the cutting blade is adjusted by processing called dressing in which the cutting blade is caused to cut the dressing board. When cutting the dressing board, the cutting blade is properly worn and the abrasive grains are moderately exposed from the bond material, which provides the state in which proper cutting can be carried out. - Furthermore, when an unused cutting blade is mounted to a cutting unit, the distance from the rotation axis to the outer circumference of the cutting blade is not uniform in the whole circumference in some cases. When such a cutting blade is subjected to dressing, the part at which the distance from the rotation axis is comparatively longer is worn more intensely relative to the part at which the distance from the rotation axis is comparatively shorter and the distance from the rotation axis to the outer circumference becomes uniform in the whole circumference, so that the cutting blade becomes the state in which proper cutting can be carried out.
- As above, the dressing of the cutting blade is carried out for the purposes of moderately exposing the abrasive grains from the bond material (referred to also as blade sharpening) and making the distance from the rotation axis to the outer circumference uniform (referred to also as roundness generation). The dressing board also contains a bond material and abrasive grains. Various kinds of dressing boards exist and the proper kind of dressing board is used according to the kind of cutting blade as the target of dressing and the purpose of dressing.
- For example, the bond material is resin, ceramics, or the like and the abrasive grains are green carborundum, white alundum, or the like. The size of the abrasive grains is typically #200 to #2000. For a cutting blade in which the bond material is hard or a cutting blade in which the abrasive grains are large, a dressing board in which the bond material is hard or a dressing board in which the abrasive grains are large is used. Furthermore, for a cutting blade in which the bond material is soft or a cutting blade in which the abrasive grains are small, a dressing board in which the bond material is soft or a dressing board in which the abrasive grains are small is used.
- On the dressing
board 1 according to the present embodiment, thebarcode 3 and the two-dimensional code 5 are disposed. Identification information of the dressingboard 1 is stored in thebarcode 3. The identification information is a unique number such as a manufacturing number of the dressingboard 1 for example. Generally the amount of information that can be stored in the barcode is comparatively small and it is impossible to store all of information relating to properties of the dressing board. Thus, on the dressingboard 1, the two-dimensional code 5 in which information relating to properties of the dressingboard 1 is stored is disposed. The information stored in the two-dimensional code 5 is product number, manufacturing number, manufacturing date, expiration date, size (vertical and horizontal lengths, thickness) of the dressingboard 1, the kinds of bond (binding material) and abrasive grains contained in the dressingboard 1, and so forth (seeFIG. 6 ). Furthermore, information relating to the kind of cutting blade suitable for dressing with the dressingboard 1 may be stored. - Next, the cutting apparatus according to the present embodiment in which the
dressing board 1 is used will be described.FIG. 2 is a perspective view schematically depicting thecutting apparatus 2. As depicted inFIG. 2 , thecutting apparatus 2 includes a base 4 that supports the respective structures. Arectangular opening 4 a is formed at a corner part on the front side of the base 4 and acassette support base 6 that ascends and descends is provided in theopening 4 a. Acassette 8 that housesplural workpieces 11 is placed on the upper surface of thecassette support base 6. InFIG. 2 , only the contour of thecassette 8 is depicted for convenience of explanation. - The
workpiece 11 is a circular wafer composed of a semiconductor material such as silicon for example and the front surface side thereof is divided into a device region at the center and a peripheral surplus region surrounding the device region. Thedevice region 15 is further segmented into plural regions by planned dividing lines (streets) arranged in a lattice manner and a device such as integrated circuit (IC) or large scale integration (LSI) is formed in each region. A dicingtape 17 with a diameter larger than theworkpiece 11 is stuck to the back surface side of theworkpiece 11. The peripheral part of the dicingtape 17 is fixed to a ring-shapedframe 19. That is, theworkpiece 11 is supported by theframe 19 with the intermediary of the dicingtape 17. Although a circular wafer composed of a semiconductor material such as silicon is employed as theworkpiece 11 in the present embodiment, there is no limit on the material, shape, structure, and so forth of theworkpiece 11. For example, it is also possible to use a rectangular substrate composed of a material such as ceramics, resin, or metal as theworkpiece 11. There is no limit also on the kind, number, arrangement, and so forth of the devices. - An
opening 4 b having a rectangular shape long in an X-axis direction (front-rear direction, processing-feed direction) is formed on a lateral side of thecassette support base 6. In theopening 4 b, an X-axis movement table 10, an X-axis movement mechanism (not depicted) that moves the X-axis movement table 10 in the X-axis direction, and a dust-proof, splash-proof cover 12 that covers the X-axis movement mechanism are provided. The X-axis movement mechanism includes a pair of X-axis guide rails (not depicted) parallel to the X-axis direction and the X-axis movement table 10 is slidably attached to the X-axis guide rails. A nut part (not depicted) is provided on the lower surface side of the X-axis movement table 10 and an X-axis ball screw (not depicted) parallel to the X-axis guide rails is screwed to this nut part. An X-axis pulse motor (not depicted) is joined to one end part of the X-axis ball screw. The X-axis ball screw is rotated by the X-axis pulse motor and thereby the X-axis movement table 10 moves in the X-axis direction along the X-axis guide rails. - A chuck table 14 for holding the
workpiece 11 is provided above the X-axis movement table 10. Around the chuck table 14, fourclamps 16 for fixing the ring-shapedframe 19 that supports the workpiece 11 from four sides are disposed. The chuck table 14 is joined to a rotation drive source (not depicted) such as a motor and rotates around a rotation axis substantially parallel to a Z-axis direction (vertical direction). Furthermore, processing feed of the chuck table 14 is carried out in the X-axis direction by the above-described X-axis movement mechanism. The upper surface of the chuck table 14 serves as a holdingsurface 14 a that holds theworkpiece 11. The holdingsurface 14 a is connected to a suction source (not depicted) through a suction path and so forth formed inside the chuck table 14. - A conveying unit (not depicted) that conveys the above-described
workpiece 11 to the chuck table 14 is provided at a position near theopening 4 b. Theworkpiece 11 conveyed to the conveying unit is placed on the holdingsurface 14 a of the chuck table 14 in such a manner that the front surface side is exposed upward for example. On the upper surface of the base 4, a gate-shapedsupport structure 24 for supporting two sets of cuttingunits 22 is disposed to straddle theopening 4 b. At the upper part of the front surface of thesupport structure 24, two sets of cuttingunit movement mechanisms 26 that move therespective cutting units 22 in a Y-axis direction (right-left direction, indexing-feed direction) and the Z-axis direction are provided. - The respective cutting
unit movement mechanisms 26 include, in common, a pair of Y-axis guide rails 28 that are disposed on the front surface of thesupport structure 24 and are parallel to the Y-axis direction. Y-axis movement plates 30 that form the respective cuttingunit movement mechanisms 26 are slidably attached to the Y-axis guide rails 28. A nut part (not depicted) is provided on the back surface side (rear surface side) of each Y-axis movement plate 30 and Y-axis ball screws 32 parallel to the Y-axis guide rails 28 are each screwed to this nut part. A Y-axis pulse motor 34 is joined to one end part of each Y-axis ball screw 32. When the Y-axis ball screw 32 is rotated by the Y-axis pulse motor 34, the Y-axis movement plate 30 moves in the Y-axis direction along the Y-axis guide rails 28. - A pair of Z-axis guide rails 36 parallel to the Z-axis direction are provided on a surface (front surface) of each Y-
axis movement plate 30. Z-axis movement plates 38 are slidably attached to the Z-axis guide rails 36. A nut part (not depicted) is provided on the back surface side (rear surface side) of each Z-axis movement plate 38 and Z-axis ball screws 40 parallel to the Z-axis guide rails 36 are each screwed to this nut part. A Z-axis pulse motor 42 is joined to one end part of each Z-axis ball screw 40. When the Z-axis ball screw 40 is rotated by the Z-axis pulse motor 42, the Z-axis movement plate 38 moves in the Z-axis direction along the Z-axis guide rails 36. - The cutting
unit 22 is provided at the lower part of each Z-axis movement plate 38. The cuttingunit 22 includes a circular-ring-shaped cutting blade 46 (seeFIG. 3 andFIG. 5A ) mounted to one end side of a spindle 44 (seeFIG. 5A ) serving as a rotation axis. Furthermore, imaging cameras (imaging units) 48 that image theworkpiece 11 and so forth are provided at positions adjacent to the cuttingunits 22. When the Y-axis movement plates 30 are moved in the Y-axis direction by the respective cuttingunit movement mechanisms 26, indexing feed of the cuttingunits 22 and theimaging cameras 48 is carried out in the Y-axis direction. Furthermore, when the Z-axis movement plates 38 are moved in the Z-axis direction by the respective cuttingunit movement mechanisms 26, the cuttingunits 22 and theimaging cameras 48 ascend or descend. Acircular opening 4 c is formed at a position on the opposite side to theopening 4 a across theopening 4 b. In theopening 4 c, acleaning unit 50 for cleaning theworkpiece 11 and so forth after cutting is provided. A control unit (control means) 52 is connected to constituent elements such as the X-axis movement mechanism, the chuck table 14, the cuttingunits 22, the cuttingunit movement mechanisms 26, theimaging cameras 48, and thecleaning unit 50. Each constituent element is controlled by this control unit (control means) 52. - Furthermore, two dress tables 54 are provided over the X-axis movement table 10 of the
cutting apparatus 2 according to the present embodiment.FIG. 3 is a side view for explaining the positional relationship among the cuttingunit 22, the chuck table 14, the dress table 54, and theimaging camera 48 of thecutting apparatus 2. InFIG. 3 , theimaging camera 48 in the state of being positioned at a position to image the dressingboard 1 and thecutting blade 46 in the state of being positioned at a position to carry out cutting processing of theworkpiece 11 are simultaneously depicted. However, because of the configuration of thecutting apparatus 2 depicted inFIG. 1 , it is impossible to simultaneously position, individually, theimaging camera 48 and thecutting blade 46 in this manner. InFIG. 3 , they are each represented in the state of being positioned in this manner for convenience of explanation. - As depicted in
FIG. 3 , the dress table 54 is disposed on the rear end side of the chuck table 14 of the X-axis movement table 10. The dress table 54 is fixed to the upper surface of the rear end side of the X-axis movement table 10. The upper surface of the dress table 54 is a holdingsurface 54 a that holds the dressingboard 1. For example, a suction groove having a cross shape in plan view is formed in the holdingsurface 54 a and a suction hole is formed at the center of the cross. The suction hole leads to a suction source, which is not depicted in the diagram, through a suction path (not depicted) inside the dress table 54. When the suction source is actuated in the state in which thedressing board 1 is placed on the holdingsurface 54 a of the dress table 54, the dressingboard 1 is held on the holdingsurface 54 a by suction. - Dressing of the
cutting blade 46 may be carried out over the chuck table 14, with the dressingboard 1 held on the holdingsurface 14 a of the chuck table 14. In this case, when cutting processing of theworkpiece 11 is carried out, the dressingboard 1 held by the chuck table 14 needs to be removed and theworkpiece 11 needs to be held instead. Furthermore, the dress table 54 is disposed on the rear end side of the chuck table 14 of the X-axis movement table 10. If the dress table 54 is disposed on the front end side of the chuck table 14, cutting chips generated from the dressingboard 1 are scattered onto the chuck table 14 and the chuck table 14 is polluted. - The
imaging camera 48 is used to check a key pattern or planned cutting line used when theworkpiece 11 is imaged and the position of cutting is figured out in cutting processing of theworkpiece 11 held by the chuck table 14. Furthermore, theimaging camera 48 can move to a position above the dress table 54 and image the dressingboard 1 held by the holdingsurface 54 a. Image data obtained by the imaging is sent to areading part 52 b of thecontrol unit 52 of thecutting apparatus 2. - Next, constituent elements of the
control unit 52 of thecutting apparatus 2 will be described by usingFIG. 2 and the respective functions thereof will be described. Thecontrol unit 52 is management apparatus of thecutting apparatus 2 for example and the respective constituent elements to be described below in thecontrol unit 52 and functions thereof may be implemented as a program by the management apparatus. - The
control unit 52 has the readingpart 52 b and the readingpart 52 b reads thebarcode 3 and the two-dimensional code 5 that appear in a captured image received from theimaging camera 48. Then, the readingpart 52 b acquires the identification information of the dressingboard 1 from thebarcode 3 and acquires information relating to properties of the dressingboard 1 from the two-dimensional code 5. The readingpart 52 b has a function of sending the acquired informations to aninformation registration part 52 a and a determiningpart 52 c. Furthermore, the readingpart 52 b has a function of sending, to theinformation registration part 52 a, a signal indicating that the two-dimensional code 5 cannot be read to theinformation registration part 52 a and the identification information acquired from thebarcode 3 if the two-dimensional code 5 of the dressingboard 1 cannot be read due to damage or the like. In theinformation registration part 52 a, the identification information of the dressingboard 1 and the information relating to the properties are registered in association with each other. Theinformation registration part 52 a has a function of sending the information relating to the properties associated with the identification information to the determiningpart 52 c when receiving the signal indicating that the two-dimensional code 5 cannot be read and the identification information. - In a specifying
part 52 d, information relating to the kind of dressingboard 1 suitable for dressing of thecutting blade 46 mounted to thecutting apparatus 2 is registered. The information is input by a worker whose has mounted thecutting blade 46 to thecutting apparatus 2 for example. The specifyingpart 52 d has a function of sending the information to the determiningpart 52 c in response to a request by the determiningpart 52 c. In the specifyingpart 52 d, information relating to the kinds of dressingboard 1 suitable for dressing regarding various kinds of cuttingblade 46 may be registered in advance. In this case, for example, the worker may register the kind ofcutting blade 46 in the specifyingpart 52 d in advance and the specifyingpart 52 d may transmit information relating to the kind of dressing board suitable for dressing of the registered kind ofcutting blade 46 to the determiningpart 52 c. The determiningpart 52 c has a function of determining whether or not the dressingboard 1 disposed in thecutting apparatus 2 matches the kind of dressing board suitable for dressing of thecutting blade 46 mounted to thecutting apparatus 2. When receiving the information relating to the kind of dressingboard 1, the determiningpart 52 c obtains the information relating to the kind of dressing board suitable for dressing of thecutting blade 46 from the specifyingpart 52 d and carries out the determination. - The
cutting apparatus 2 may have a configuration in which dressing can be independently carried out for each of the first andsecond cutting blades 46 mounted to the two cuttingunits 22. For example, thecutting apparatus 2 may include a first dress table that holds thefirst dressing board 1 with which dressing of thefirst cutting blade 46 is carried out and a second dress table that holds thesecond dressing board 1 with which dressing of thesecond cutting blade 46 is carried out. - Next, the use method of the dressing
board 1 with use of thecutting apparatus 2 will be described. When the dressingboard 1 is used, identification information and information relating to properties can be registered in thecutting apparatus 2 in association with each other. Furthermore, when the dressingboard 1 is used, the information relating to the properties can be acquired from the identification information and whether or not dressing of a cutting blade is possible can be determined. First, a use method of the dressingboard 1 in which the identification information and the information relating to the properties are registered in thecontrol unit 52 of thecutting apparatus 2 in association with each other will be described.FIG. 4A is a flowchart for explaining the use method of the dressingboard 1. In the use method, first a dressing board disposing step of disposing the dressingboard 1 in thecutting apparatus 2 is carried out. The dressingboard 1 is disposed on the dress table 54 (seeFIG. 2 ) of thecutting apparatus 2 or the chuck table 14 (seeFIG. 2 ). Next, an identification information reading step of imaging thebarcode 3 of the dressingboard 1 by the imaging camera (imaging unit) 48 and reading the identification information from thebarcode 3 is carried out. In the step, the dressingboard 1 is positioned below theimaging camera 48 and theimaging camera 48 is caused to image the dressingboard 1. The obtained captured image is sent to the readingpart 52 b of thecontrol unit 52. In thereading part 52 b, the identification information of the dressingboard 1 is acquired from thebarcode 3 that appears in the captured image. - Next, an information registration step of registering the information relating to the properties in the
information registration part 52 a in association with the identification information is carried out. In the information registration step, in order to prevent duplicate registration in theinformation registration part 52 a, first it is determined whether or not the identification information acquired from thebarcode 3 has been already registered in theinformation registration part 52 a. If the identification information has not been registered in theinformation registration part 52 a, the information relating to the properties is read from a two-dimensional code that appears in the captured image and the information relating to the properties of the dressingboard 1 is registered in theinformation registration part 52 a in association with the identification information. On the other hand, if the identification information has been registered in theinformation registration part 52 a, the information on the dressingboard 1 is not registered in theinformation registration part 52 a because duplicate registration is unnecessary. By the above, regarding the dressingboard 1 disposed in thecutting apparatus 2, the information relating to the properties can be registered in thecutting apparatus 2 in association with the identification information. The registration is automatically carried out by the cuttingapparatus 2. Therefore, an operator or the like of thecutting apparatus 2 does not need input the information and the possibility of erroneous input also does not exist. - Next, dressing of the
cutting blade 46 by use of the dressingboard 1 will be described.FIG. 5A is a top view schematically depicting dressing of a cutting blade by use of a dressing board andFIG. 5B is a top view schematically depicting the dressing board used for the dressing. As depicted inFIG. 5A , thespindle 44 of the cuttingunit 22 is rotated to rotate thecutting blade 46. Furthermore, the X-axis movement table 10 is moved along the X-axis direction and thecutting blade 46 is caused to cut into the dressingboard 1. Thereupon, acut groove 21 along the X-axis direction is formed in the dressingboard 1. If the dressing of thecutting blade 46 is not completed even when thecut groove 21 is formed from one end of the dressingboard 1 to the other end, thecutting blade 46 is shifted in the Y-axis direction and is caused to repeatedly cut the dressingboard 1 until the dressing of thecutting blade 46 is completed. - To use the dressing
board 1 efficiently and economically, it is preferable to cause thecutting blade 46 to cut the whole surface of the dressingboard 1 thoroughly. However, if the region in which the two-dimensional code 5 is disposed is cut by thecutting blade 46 even partly, the two-dimensional code 5 becomes unreadable. For example, in the dressingboard 1 depicted inFIG. 5B , thecut grooves 21 that overlap with the two-dimensional code 5 are formed and the two-dimensional code 5 is unreadable. In this case, when use of the dressingboard 1 is suspended once and the dressingboard 1 is removed from the cuttingapparatus 2 and thereafter using the dressingboard 1 again is attempted, it is impossible to acquire the information relating to the properties of the dressingboard 1 from the two-dimensional code 2. However, even in such a case, the information relating to the properties can be acquired by a use method of the dressingboard 1 to be described next because the information relating to the properties is registered in thecutting apparatus 2 in association with the identification information stored in thebarcode 3. The use method can be carried out also when the two-dimensional code 5 is readable. - The use method of the dressing
board 1 in which information relating to properties of the dressingboard 1 is acquired by using identification information read from thebarcode 3 will be described.FIG. 4B is a flowchart for explaining the use method of the dressingboard 1. First, similarly to the above-described use method explained withFIG. 4A , the dressing board disposing step of disposing the dressingboard 1 in thecutting apparatus 2 and the identification information reading step of reading the identification information from thebarcode 3 are carried out. Next, whether or not the two-dimensional code 5 of the dressingboard 1 is readable is determined. If the two-dimensional code 5 can be read from a captured image acquired by theimaging camera 48, the information relating to the properties of the dressingboard 1 is acquired from the two-dimensional code 5. On the other hand, if the two-dimensional code 5 cannot be read from the captured image, for example thebarcode 3 left in the gap between twoadjacent cut grooves 21 is read and the identification information is acquired as depicted inFIG. 5B . Then, reference to theinformation registration part 52 a is made based on the identification information and the information relating to the properties associated with the identification information is acquired from theinformation registration part 52 a. - After the
barcode 3 is read and the identification information is acquired, the information relating to the properties associated with the identification information may be acquired from theinformation registration part 52 a without determining whether or not the two-dimensional code 5 is readable. In this case, it is checked in advance whether or not the information relating to the properties associated with the identification information has been registered in theinformation registration part 52 a, and the registered information is acquired if the registration can be confirmed. If the registration cannot be registered, the information relating to the properties is read from the two-dimensional code 5 and is registered in theinformation registration part 52 a in association with the identification information. Thebarcode 3 becomes unreadable if thebarcode 3 is cut along the longitudinal direction of each bar forming thebarcode 3 and even one of the bars is lost. For this reason, thebarcode 3 is disposed in such a manner that each bar does not extend along the extension direction of thecut grooves 21 formed through cutting of the dressingboard 1. - Next, it is determined whether or not the properties of the dressing
board 1 included in the information relating to the properties match the kind of dressing board suitable for dressing of thecutting blade 46 registered in the specifyingpart 52 d of thecontrol unit 52. InFIG. 6 , one example of each configuration of thecontrol unit 52, the identification information of the dressingboard 1 and the information relating to properties, and information relating to specifying of the dressingboard 1 registered in the specifyingpart 52 d is depicted. In the example depicted inFIG. 6 , the case is depicted in which the two-dimensional code 5 is unreadable and the readingpart 52 b acquires the identification information from thebarcode 3 and reference to theinformation registration part 52 a is made based on the identification information and the determiningpart 52 c acquires the information relating to the properties. In the specifyingpart 52 d, information relating to the type of dressingboard 1 suitable for dressing of thecutting blade 46 attached to thecutting apparatus 2 is registered in advance for example. Furthermore, the product number of the dressing board suitable for dressing of thecutting blade 46 may be registered in the specifyingpart 52 d. - The determination of whether or not the dressing
board 1 disposed in thecutting apparatus 2 matches the kind of dressing board suitable for dressing of thecutting blade 46 is carried out in the determiningpart 52 c. For example, the determiningpart 52 c acquires the information relating to the properties of the dressingboard 1 from theinformation registration part 52 a and acquires the information relating to the kind of dressing board suitable for dressing from the specifyingpart 52 d. If the determiningpart 52 c determines that the properties of the dressingboard 1 match the kind of dressing board suitable for dressing of thecutting blade 46, thecontrol unit 52 carries out dressing of thecutting blade 46 by using the dressingboard 1. On the other hand, if it is determined that the properties of the dressingboard 1 do not match the kind of dressing board suitable for dressing of thecutting blade 46, this mismatch is informed to the operator or the like of thecutting apparatus 2. Information indicating the mismatch is displayed on a display part (not depicted) or the like of thecutting apparatus 2 to inform the mismatch to the operator (user) of thecutting apparatus 2. Alternatively, thecutting apparatus 2 may have an alarm buzzer and an alarm sound may be issued if it is determined that the dressingboard 1 is improper. - When the dressing
board 1 according to the present embodiment is used, information relating to the dressingboard 1 can be acquired and dressing can be properly carried out even when the dressingboard 1 is cut by a cutting blade. - The present invention is not limited to the description of the above-described embodiment and can be carried out with various changes. For example, in the above-described embodiment, the
cutting apparatus 2 including the two cuttingunits 22 and the two dress tables 54 is described. However, the numbers of cutting units and dress tables included in thecutting apparatus 2 are not limited thereto and thecutting apparatus 2 may include one cutting unit and one dress table for example. - The present invention is not limited to the details of the above described preferred embodiment. The scope of the invention is defined by the appended claims and all changes and modifications as fall within the equivalence of the scope of the claims are therefore to be embraced by the invention.
Claims (7)
Priority Applications (1)
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US17/943,747 US11850696B2 (en) | 2017-08-22 | 2022-09-13 | Dressing board, use method of dressing board, and cutting apparatus |
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JP2017-159529 | 2017-08-22 | ||
JP2017159529A JP6957096B2 (en) | 2017-08-22 | 2017-08-22 | Dressing board, how to use it and cutting equipment |
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US17/943,747 Division US11850696B2 (en) | 2017-08-22 | 2022-09-13 | Dressing board, use method of dressing board, and cutting apparatus |
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US20190061093A1 true US20190061093A1 (en) | 2019-02-28 |
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US16/101,792 Abandoned US20190061093A1 (en) | 2017-08-22 | 2018-08-13 | Dressing board, use method of dressing board, and cutting apparatus |
US17/943,747 Active US11850696B2 (en) | 2017-08-22 | 2022-09-13 | Dressing board, use method of dressing board, and cutting apparatus |
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US17/943,747 Active US11850696B2 (en) | 2017-08-22 | 2022-09-13 | Dressing board, use method of dressing board, and cutting apparatus |
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US (2) | US20190061093A1 (en) |
JP (1) | JP6957096B2 (en) |
KR (1) | KR102539812B1 (en) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20210339358A1 (en) * | 2020-04-30 | 2021-11-04 | Disco Corporation | Management method of machining system |
US20220040878A1 (en) * | 2020-08-07 | 2022-02-10 | Disco Corporation | Cutting apparatus |
US11389880B2 (en) * | 2018-02-16 | 2022-07-19 | Kitagawa Iron Works Co., Ltd | Chuck mechanism and top jaw |
US11565371B2 (en) * | 2018-12-31 | 2023-01-31 | Micron Technology, Inc. | Systems and methods for forming semiconductor cutting/trimming blades |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7187119B2 (en) * | 2019-04-02 | 2022-12-12 | 株式会社ディスコ | Grinding device and dressing board type discrimination method |
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JPH0513480Y2 (en) * | 1987-10-29 | 1993-04-09 | ||
US6227394B1 (en) * | 1998-06-09 | 2001-05-08 | Asahi Glass Company Ltd. | Glass bulb for a cathode ray tube and a method for producing a cathode ray tube |
US6264533B1 (en) * | 1999-05-28 | 2001-07-24 | 3M Innovative Properties Company | Abrasive processing apparatus and method employing encoded abrasive product |
JP4387010B2 (en) * | 1999-11-10 | 2009-12-16 | 株式会社ディスコ | Cutting equipment |
WO2003011517A1 (en) | 2001-08-01 | 2003-02-13 | Entegris, Inc. | Wafer carrier wear indicator |
JP2006218571A (en) | 2005-02-10 | 2006-08-24 | Disco Abrasive Syst Ltd | Dressing board and dressing method |
JP5541657B2 (en) | 2009-07-01 | 2014-07-09 | 株式会社ディスコ | Sharpening board |
JP5571331B2 (en) | 2009-07-07 | 2014-08-13 | 株式会社ディスコ | Cutting equipment |
JP2012066328A (en) * | 2010-09-22 | 2012-04-05 | Disco Corp | Dressing board and dressing board storage case |
EP2455186A1 (en) | 2010-11-17 | 2012-05-23 | Schneider GmbH & Co. KG | Device and method for processing an optical lens with automatic identification of the optical lens |
WO2012045412A1 (en) | 2010-10-04 | 2012-04-12 | Schneider Gmbh & Co. Kg | Apparatus and method for working an optical lens and also a transporting container for optical lenses |
JP2013229440A (en) * | 2012-04-25 | 2013-11-07 | Denso Corp | Semiconductor device and semiconductor wafer for use in production thereof |
CN106695507A (en) * | 2015-11-10 | 2017-05-24 | 扬州锦江有色金属有限公司 | Polishing system with automatic recognition function |
GB2557952B (en) | 2016-12-16 | 2022-06-15 | Zeeko Innovations Ltd | Methods and apparatus for shaping workpieces |
US11833632B2 (en) | 2018-07-18 | 2023-12-05 | Illinois Tool Works Inc. | Method and apparatus for maintaining a surface speed of a circular cutting device |
CA3135451A1 (en) | 2019-03-29 | 2020-10-08 | Saint-Gobain Abrasives, Inc. | Performance grinding solutions |
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- 2017-08-22 JP JP2017159529A patent/JP6957096B2/en active Active
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11389880B2 (en) * | 2018-02-16 | 2022-07-19 | Kitagawa Iron Works Co., Ltd | Chuck mechanism and top jaw |
US11565371B2 (en) * | 2018-12-31 | 2023-01-31 | Micron Technology, Inc. | Systems and methods for forming semiconductor cutting/trimming blades |
US20210339358A1 (en) * | 2020-04-30 | 2021-11-04 | Disco Corporation | Management method of machining system |
US11738422B2 (en) * | 2020-04-30 | 2023-08-29 | Disco Corporation | Management method of machining system |
US20220040878A1 (en) * | 2020-08-07 | 2022-02-10 | Disco Corporation | Cutting apparatus |
US11654520B2 (en) * | 2020-08-07 | 2023-05-23 | Disco Corporation | Cutting apparatus |
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CN109420980A (en) | 2019-03-05 |
CN109420980B (en) | 2022-05-10 |
US11850696B2 (en) | 2023-12-26 |
US20230001536A1 (en) | 2023-01-05 |
KR102539812B1 (en) | 2023-06-02 |
JP6957096B2 (en) | 2021-11-02 |
JP2019038045A (en) | 2019-03-14 |
KR20190021165A (en) | 2019-03-05 |
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