US20090127145A1 - Stock device for cutter blade - Google Patents

Stock device for cutter blade Download PDF

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Publication number
US20090127145A1
US20090127145A1 US11/995,452 US99545206A US2009127145A1 US 20090127145 A1 US20090127145 A1 US 20090127145A1 US 99545206 A US99545206 A US 99545206A US 2009127145 A1 US2009127145 A1 US 2009127145A1
Authority
US
United States
Prior art keywords
cutter blades
case body
blade
cutter
stock device
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
Application number
US11/995,452
Other languages
English (en)
Inventor
Hideaki Nonaka
Kan Nakata
Yoshiaki Sugishita
Kenji Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lintec Corp
Original Assignee
Lintec Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lintec Corp filed Critical Lintec Corp
Assigned to LINTEC CORPORATION reassignment LINTEC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOBAYASHI, KENJI, NAKATA, KAN, NONAKA, HIDEAKI, SUGISHITA, YOSHIAKI
Publication of US20090127145A1 publication Critical patent/US20090127145A1/en
Abandoned legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J11/00Manipulators not otherwise provided for
    • B25J11/005Manipulators for mechanical processing tasks
    • B25J11/0055Cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00Gripping heads and other end effectors
    • B25J15/04Gripping heads and other end effectors with provision for the remote detachment or exchange of the head or parts thereof
    • B25J15/0491Gripping heads and other end effectors with provision for the remote detachment or exchange of the head or parts thereof comprising end-effector racks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08Means for treating work or cutting member to facilitate cutting
    • B26D7/10Means for treating work or cutting member to facilitate cutting by heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0025Sterilizing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08Means for treating work or cutting member to facilitate cutting
    • B26D7/088Means for treating work or cutting member to facilitate cutting by cleaning or lubricating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614Means for mounting the cutting member
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/242With means to clean work or tool
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/283With means to control or modify temperature of apparatus or work
    • Y10T83/293Of tool

Definitions

  • the present invention relates to a stock device for cutter blades, particularly to a stock device for cutter blades capable of storing the cutter blades so that the cutter blades are oriented or directed in a constant direction for the occasion when a cutter blade is mounted onto a cutting device, as well as capable of performing maintenance and inspection of the cutter blades when the cutter blades are stored therein.
  • an adherend such as semiconductor wafer (hereinafter, simply referred to as “wafer”) is stuck with a protective sheet for protecting circuit surface thereof.
  • the sheet has to be cut off along the periphery of the wafer with a cutting device after the sheet is peeled off from the release liner and stuck onto the wafer.
  • Patent document 1 discloses a cutting device for cutting a sheet stuck on a wafer is disposed above a sheet sticking table.
  • the cutting device comprises an arm having its rotation center on the center line of the wafer and a cutter blade attached to the front end of the arm.
  • patent document 2 discloses a cutting device constituted of a robot equipped with a cutter blade at the free-end side thereof.
  • Patent document 1 Japanese Patent No. 2919938
  • Patent document 2 Japanese Patent Application Laid-Open No. Hei 6-335893
  • each of the cutting devices disclosed in the patent documents 1 and 2 does not include any maintenance function for stabilizing the cutting accuracy by the cutter blade, and the cutting devices are not arranged so as to cope with the time-varying deterioration of the cutter blade accuracy.
  • the cutting device is constituted of the robot, such arrangements are not included that the cutter blade can be picked up to be mounted from a stocker which stores a plurality of cutter blades, or the cutter blades are kept to be oriented or directed in a constant direction in a case where the cutting device replaces the cutter blade automatically.
  • the present invention has been proposed in view of the above disadvantages. It is an object of the present invention to provide a stock device for cutter blades capable of stably maintaining the cutting accuracy of the cutter blade.
  • Another object of the present invention is to provide a stock device for cutter blades that maintains a stored posture of the cutter blades to be constant, and thereby the relative position thereof with respect to the cutting device on which the cutter blade is mounted is maintained to be constant so that the orientation of the blade corresponds to the traveling track of the cutting device.
  • a stock device for cutter blades to be mounted detachably onto a cutting device comprising:
  • a case body for storing cutter blades, and positioning means which is provided in the case body and maintains the storing position of the cutter blades to be constant.
  • the positioning means includes an orientation determining portion formed on the cutter blade and an engagement portion provided within the case body corresponding to the orientation determining portion.
  • the case body includes washing means for cutter blades.
  • the washing means may be arranged so as to contain washing liquid within the case body.
  • the washing means may include washing liquid contained within the case body and an ultrasonic vibrating device for imparting ultrasonic vibration to the washing liquid.
  • washing means may be arranged with a washing brush stored within the case body.
  • heating means for heating the cutter blade is disposed within the case body.
  • inspection means for inspecting blades of the cutter blades may be provided within the case body.
  • the cutter blades can be stored being orientated in a constant direction. Therefore, when such an arrangement is adopted that the cutting device moves to mount the cutter blade stocked in the stock device and mounts the cutter blade automatically, the orientation of the cutter blade can be maintained to a constant direction with respect to the cutting device. For example, when the cutting device is arranged so as to perform the cutting operation along the outer periphery of an adherend, the blade has to be oriented in accordance with the track thereof. According to the present invention, since the orientation of the cutter blade stored in the stock device is maintained to be constant, the blade can be set so that, when mounted onto the cutting device, the orientation of the blade is in accordance with the track. Therefore, such disadvantage is prevented that the orientation of the blade is shifted.
  • the case body includes the washing means for the cutter blades, even when the adhesive and the like adheres on the cutter blades, the blades can be washed while being stored in the stock device. Therefore, the cutting accuracy can be continuously maintained when the cutter blade is used next time.
  • the cutter blade can be used in a state being heated, and thereby the cutting accuracy can be improved.
  • the blade can be inspected when the cutter blade is stored in the stock device. And when a defect is detected, such a measure can be taken as the blade is prevented from being used again.
  • FIG. 1 is a perspective view schematically showing a stock device disposed along with a cutting device for cutting a protective sheet stuck on a wafer.
  • FIG. 2 is a side view of a table and the cutting device.
  • FIG. 3 is an enlarged perspective view of a cutter blade.
  • FIG. 4 is a cross sectional view schematically showing the stock device.
  • FIG. 5 is a cross sectional view showing another example of a stock device.
  • FIG. 6 is a cross sectional view still another example of a stock device.
  • FIG. 1 is a perspective view schematically showing a stock device according to the present invention, which is disposed along with a cutting device.
  • the stock device 11 for cutter blades 21 and a table 13 for supporting a wafer W are disposed.
  • a strip of protective sheet S hereinafter, refer to as “sheet S”
  • the sheet S is arranged so as to be cut by the cutting device 10 along the outer periphery of the wafer W.
  • the cutting device 10 comprises a robot body 20 and the cutter blade 21 supported on the free-end side of the robot body 20 .
  • the robot body 20 includes a base section 23 , first to sixth arms 23 A to 23 F, which are disposed on the upper surface side of the base section 23 so as to be rotatable in the direction indicated with arrows A to F respectively, and a cutter blade holding chuck 29 attached to the front end side of the sixth arm 23 F.
  • Each of the second, third and fifth arms 23 B, 23 C, 23 E is provided rotatably within a plane of Y ⁇ Z in FIG. 2 ; and each of the first, fourth and sixth arms 23 A, 23 D, 23 F is provided rotatably about the axis thereof.
  • the cutter blade holding chuck 29 comprises a cutter blade receiver 30 having a substantially cylindrical shape and three chuck claws 31 for holding the cutter blade 21 detachably, which are disposed at the positions substantially 120° away from each other in the peripheral direction of the cutter blade receiver 30 .
  • Each of the chuck claws 31 has a pointed-edge portion 31 A an inner end of which forms an acute angle, and is arranged so as to move forward/backward in the radial direction with respect to the center of the cutter blade receiver 30 with pneumatic pressure.
  • the cutting device 10 is controlled by a control device (not shown), and the control device is provided to control the movement of the cutting device 10 when cutting the sheet S and to control automatic mounting and dismounting operation of the cutter blade 21 stored in the stock device 11 .
  • the cutter blade 21 comprises a blade holder 21 A and a blade 21 B inserted into the front end of the blade holder 21 A and fixed thereto.
  • the blade holder 21 A has a substantially cylindrical shape, and at the positions substantially 120° away from each other in the peripheral direction of the circumferential surface thereof, grooves 33 having a length extending from the base end to an intermediate portion thereof are formed along the axial direction.
  • the position of the cutter blade 21 with respect to the cutter blade holding chuck 29 is maintained to be constant through such an arrangement as the pointed-edge portions 31 A of the chuck claws 31 engage with these grooves 33 .
  • slant surfaces 21 C and 21 C as an orientation determining portion are formed in the positions opposite to each other.
  • the slant surfaces 21 C and 21 C in the embodiment are formed symmetrically with respect to a virtual center plane of the blade holder 21 A, however, the slant surfaces 21 C and 21 C may be formed asymmetrically.
  • the stock device 11 comprises a case body 40 and a plurality of receiving sections 41 formed in the case body 40 so as to store the cutter blades 21 independently from each other.
  • Each of the receiving sections 41 is formed to be a shape having an open upper end with a bottom; the upper portion thereof is a blade holder receiving portion 43 and the lower portion is a blade receiving portion 44 .
  • Inner surface of the blade holder receiving portion 43 is formed with engagement surfaces 43 A and 43 A as an engagement portion constituting positioning means along with slant surfaces 21 C and 21 C of the blade holder 21 A.
  • the peripheral direction position of the cutter blade 21 in the receiving section 41 is managed to be at a constant position.
  • the engagement surfaces 43 A and 43 A are formed in an asymmetry shape respectively corresponding to the slant surfaces 21 C and 21 C.
  • the two at the left side in FIG. 4 are heating storage sections 41 A; and the two at the right side are washing storage sections 41 B.
  • the heating storage sections 41 A are provided with coil heaters 45 constituting heating means at the peripheral side thereof, and is arranged so that, when power is supplied to the coil heaters 45 , heat is generated and heats up the cutter blade 21 .
  • the blade receiving portion 44 is formed to be a common space.
  • organic solvent L as washing liquid, which constitutes the washing means is contained, and is arranged so as to dissolve and remove the adhesive and the like adhered on the blade 21 B with the organic solvent L.
  • the washing storage section 41 B is arranged so as to ensure constantly a space for washing the blade 21 B of the cutter blade 21 after the cutter blade 21 is repeatedly and continuously used for sheet cutting operation.
  • the cutter blade 21 on the cutting device 10 moves along the outer periphery of the wafer W to cut the sheet S at the outside of the wafer W as an unnecessary sheet portion.
  • the cutter blade 21 When the sheet cutting operation is carried out repeatedly and continuously, it is conceivable that adhesive is transferred from sheets S onto the cutter blade 21 which has been used for cutting. Therefore, the cutter blade 21 is stored in a vacant space of the washing storage section 41 B in the stock device 11 , and the adhesive is dissolved and removed with the organic solvent L in the washing storage section 41 . The cutter blade 21 is stored in a state that the slant surfaces 21 C of the blade holder 21 A match with the engagement surfaces 43 A. Owing to this, the cutter blade 21 is kept in the constant direction. On the other hand, the cutter blade 21 , which has been washed for a specific period of time, is transferred to the heating storage section 41 A while keeping the same orientation by the cutting device 10 , and is subjected to the heating process by the coil heaters 45 .
  • the cutting device 10 moves to pick up the cutter blade 21 , which has been heated, and while keeping the constant orientation, a cutter blade 21 is mounted onto the cutter blade holding chuck 29 in a state that the orientation corresponding to the above-described traveling track can be maintained.
  • such stock device 11 can be provided that the cutter blade 21 can be mounted automatically in the constant orientation with respect to the cutter blade holding chuck of the cutting device 10 , and if necessary, the heated cutter blade 21 can be used, and adhesive or the like adhered on the cutter blade 21 can be dissolved to prevent the cutting accuracy of the blade 21 B from being deteriorated.
  • the washing means it is not limited to the use of organic solvent L.
  • a rotation brush 50 is disposed as the washing means within the blade receiving portion 44 , and the blade 21 B is washed by the rotation brush 50 .
  • the blade receiving portion 44 may be arranged to be filled with washing liquid.
  • the blade receiving portion 44 is equipped with inspection means 60 constituted of a camera or the like capable of inspecting the surface of the blade 21 B to inspect defects and the like on the blade 21 B.
  • the organic solvent L is used to dissolve the adhesive and the like adhered on the blade 21 B in the above-described embodiment, such an arrangement may be adopted that the blade 21 B is washed with an ultrasonic vibrating device using water or the like as the washing liquid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Robotics (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Details Of Cutting Devices (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Knives (AREA)
US11/995,452 2005-08-08 2006-07-21 Stock device for cutter blade Abandoned US20090127145A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005229224A JP4559320B2 (ja) 2005-08-08 2005-08-08 シート切断装置
JP2005-229224 2005-08-08
PCT/JP2006/314485 WO2007018024A1 (fr) 2005-08-08 2006-07-21 Dispositif de rangement d'une lame de coupe

Publications (1)

Publication Number Publication Date
US20090127145A1 true US20090127145A1 (en) 2009-05-21

Family

ID=37727213

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/995,452 Abandoned US20090127145A1 (en) 2005-08-08 2006-07-21 Stock device for cutter blade
US12/979,481 Abandoned US20110088526A1 (en) 2005-08-08 2010-12-28 Sheet cutting apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/979,481 Abandoned US20110088526A1 (en) 2005-08-08 2010-12-28 Sheet cutting apparatus

Country Status (7)

Country Link
US (2) US20090127145A1 (fr)
JP (1) JP4559320B2 (fr)
KR (1) KR101211400B1 (fr)
CN (1) CN101237974A (fr)
DE (1) DE112006002093T5 (fr)
TW (1) TW200722250A (fr)
WO (1) WO2007018024A1 (fr)

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US20100043610A1 (en) * 2005-10-04 2010-02-25 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic trimming apparatus and ultrasonic trimming method
US20100185315A1 (en) * 2007-08-31 2010-07-22 Abb Technology Ab Robot tool, robot system and method for machining workpieces
JP2012061573A (ja) * 2010-09-17 2012-03-29 Amagasaki Kosakusho:Kk トリミング装置とこれに用いられるカッター交換装置
EP3202545A1 (fr) * 2016-02-04 2017-08-09 The Boeing Company Machine de coupe ultrasonique avec système automatisé pour le nettoyage de la lame
US10179420B2 (en) 2017-04-27 2019-01-15 Pearl Technologies Inc. Safety cover for lightning punch
US20200376783A1 (en) * 2019-05-28 2020-12-03 The Boeing Company Trimming System for Composite Structures
DE102020208558A1 (de) 2020-07-08 2022-01-13 Frimo Group Gmbh Schneidklingenmontagevorrichtung, Schneidvorrichtung sowie Magazin für eine Schneidklinge
US20220048214A1 (en) * 2018-12-17 2022-02-17 Ceratizit Como S.P.A. Ultrasonic knife and ultrasonic cutting system
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EP2131570A4 (fr) 2007-02-24 2015-02-18 Nec Corp Terminal portable
JP5097571B2 (ja) * 2008-02-15 2012-12-12 日東電工株式会社 カッタ刃の清掃方法およびカッタ刃の清掃装置、並びに、これを備えた粘着テープ貼付け装置
JP5160297B2 (ja) * 2008-05-02 2013-03-13 日東電工株式会社 カッタ刃の清掃方法およびカッタ刃の清掃装置、並びに、これを備えた粘着テープ貼付け装置
CN103447255B (zh) * 2012-05-30 2017-09-01 上海晨兴希姆通电子科技有限公司 摄像头连接器清洗方法及其支撑冶具
CN102950127A (zh) * 2012-11-12 2013-03-06 大连太平洋电子有限公司 一种线路板钻孔刀具的清洗方法
JP6223131B2 (ja) * 2013-11-05 2017-11-01 株式会社島精機製作所 裁断機の裁断刃洗浄装置
JP7240942B2 (ja) * 2019-04-22 2023-03-16 リンテック株式会社 切断手段の変温装置および切断手段の変温方法
JP7635035B2 (ja) * 2021-03-22 2025-02-25 リンテック株式会社 清掃装置および清掃方法
JP7663454B2 (ja) * 2021-08-11 2025-04-16 株式会社ディスコ シート貼着装置
JP2024093343A (ja) * 2022-12-27 2024-07-09 オガワ機工株式会社 カートンオープナー

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US8277282B2 (en) * 2005-10-04 2012-10-02 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic trimming apparatus and ultrasonic trimming method
US20120247295A1 (en) * 2005-10-04 2012-10-04 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic Trimming Appratus
US8512094B2 (en) 2005-10-04 2013-08-20 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic trimming method
US8591285B2 (en) * 2005-10-04 2013-11-26 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic trimming apparatus
US8632377B2 (en) * 2005-10-04 2014-01-21 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic trimming method
US20100043610A1 (en) * 2005-10-04 2010-02-25 Nihon Shoryoku Kikai Co., Ltd. Ultrasonic trimming apparatus and ultrasonic trimming method
US20100185315A1 (en) * 2007-08-31 2010-07-22 Abb Technology Ab Robot tool, robot system and method for machining workpieces
JP2012061573A (ja) * 2010-09-17 2012-03-29 Amagasaki Kosakusho:Kk トリミング装置とこれに用いられるカッター交換装置
US20200147822A1 (en) * 2016-02-04 2020-05-14 The Boeing Company Ultrasonic cutting machine with automated blade cleaning system
EP3202545A1 (fr) * 2016-02-04 2017-08-09 The Boeing Company Machine de coupe ultrasonique avec système automatisé pour le nettoyage de la lame
US20170225349A1 (en) * 2016-02-04 2017-08-10 The Boeing Company Ultrasonic Cutting Machine with Automated Blade Cleaning System
US10549443B2 (en) * 2016-02-04 2020-02-04 The Boeing Company Ultrasonic cutting machine with automated blade cleaning system
US10179420B2 (en) 2017-04-27 2019-01-15 Pearl Technologies Inc. Safety cover for lightning punch
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KR20080024232A (ko) 2008-03-17
JP2007044772A (ja) 2007-02-22
WO2007018024A1 (fr) 2007-02-15
JP4559320B2 (ja) 2010-10-06
DE112006002093T5 (de) 2008-07-03
US20110088526A1 (en) 2011-04-21
CN101237974A (zh) 2008-08-06
KR101211400B1 (ko) 2012-12-12
TW200722250A (en) 2007-06-16

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