KR101518045B1 - Circular pneumatic jig for machining circular graphite forming fixture for manufacturing curved glass - Google Patents

Circular pneumatic jig for machining circular graphite forming fixture for manufacturing curved glass Download PDF

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Publication number
KR101518045B1
KR101518045B1 KR1020140164836A KR20140164836A KR101518045B1 KR 101518045 B1 KR101518045 B1 KR 101518045B1 KR 1020140164836 A KR1020140164836 A KR 1020140164836A KR 20140164836 A KR20140164836 A KR 20140164836A KR 101518045 B1 KR101518045 B1 KR 101518045B1
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South Korea
Prior art keywords
circular
workpiece
jig
graphite
curved
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KR1020140164836A
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Korean (ko)
Inventor
윤재호
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윤재호
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Priority to KR1020140164836A priority Critical patent/KR101518045B1/en
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Publication of KR101518045B1 publication Critical patent/KR101518045B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • B23Q3/08Work-clamping means other than mechanically-actuated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67Apparatus 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
    • H01L21/683Apparatus 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 for supporting or gripping

Abstract

The present invention relates to a circular pneumatic jig or machining a circular graphite forming fixture for manufacturing a curved glass used for a wearable device. The circular pneumatic jig comprises: a vacuum absorption block having a larger upper surface than an outer circumferential portion of a circular graphite processed object to be machined and having at least two circular recessed spaces receiving a lower protrusion of the circular graphite processed object to be machined in the center of the upper surface and wherein a mounting unit coming in surface contact with the lower surface of the circular graphite processed object to be machined is formed on a floor of the recessed space; and a connection device coupled and fixated to one side surface of the vacuum absorption block to be communicated with a circular vacuum passage of the recessed space to be connected with an external vacuum generation device. According to the present invention, a setting time for installing the cylindrical graphite processed object to be machined, which is hard to be fixated with an existing bolt or the jig such as a vice, in the jig is significantly reduced to improve machining productivity since the circular graphite processed object to be machined is easily absorbed and fixated on the circular pneumatic jig with negative pressure.

Description

TECHNICAL FIELD [0001] The present invention relates to a circular pneumatic jig for processing a circular graphite forming jig for use in the production of curved glass,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular pneumatic jig used for processing a circular graphite forming jig for manufacturing curved glass used in wearable appliances and the like.
In conventional smartphones, flat glass was used in the cover glass of the front part, but recently curved glass has begun to be used. In addition, wearable devices (Wearable Device), which is predicted to be the next generation of mobile technology, have also started to incorporate curved glass in cover glasses. Such a curved cover glass has many merits such as aesthetic sense, comfort, and functionality, and is expected to be replaced by 3D and 6D curved smart phones and wearable devices in the future.
However, such a technique of processing a curved cover glass of a 3D or 6D curved surface smartphone or wearable is an early stage technology, and commercialized technology is only a part of the technology.
One such technique is a curved surface machining method of a cover glass in which a cover glass is bent in a high-temperature heating furnace by using a tool that is specially manufactured to manufacture a curved glass, Lt; / RTI >
Korean Patent No. 10-1260434 discloses, as shown in FIG. 1, a lower base on which a thin-film cover glass having a predetermined area is seated; An upper base for pressing the upper surface of the cover glass seated on the lower base by its own weight; One or more surfaces of one side of the flat thin film cover glass may be bent to form a curved surface by refilling the cover glass by its own weight at a high temperature of 650 to 750 DEG C which does not melt and has low ductility Wherein a curved surface of the bottom portion of the bending portion forms a downwardly sloping curved surface at a predetermined angle and a downward sloping curved surface corresponding to the curved surface of the bending portion is formed at a portion where the bending portion is seated in the bottom base, And the gap between the curved surface and the curved surface of the lower base is formed to be the same as the thickness of the cover glass. The mold for manufacturing a 3D cover glass for a touch panel according to the present invention is characterized in that, Manufacture of 3D shape cover glass for touch panel Manufacture of mold for any material, For that processing using a jig-type has no base.
In another curved glass forming method, Korean Patent Registration No. 10-1404494 discloses, as shown in FIG. 2, a curved shape of a cover glass having a curved surface to be manufactured is formed of a stainless steel metal material protruding in a convex shape Lower mold; And an upper mold formed of a stainless metal material fastened to an upper end of the lower mold so as to cover a plane of the cover glass having the curved surface, A support; And a molding part protruding from the plane of the support part in a convex shape, the molding part being composed of a flat part where the plane of the cover glass having the curved surface closely contacts and a curved part where the curved surface of the cover glass having the curved surface closely contacts, A planar extrusion unit for pressing the plane of the cover glass having the curved surface in close contact with the planar part; And a curved surface extruding part for forming a curved surface of the cover glass having the curved surface in close contact with the curved surface part, wherein the curved surface extruding part can be detachably attached to the planar extruded part. Lt; / RTI > However, this is also disclosed only for a mold for producing a curved cover glass, and there is no description about the material of the mold and the method of manufacturing the mold.
On the other hand, in the prior art for molding the curved cover glass, a stainless steel metal material is used as a molding tool (mold) for producing a cover glass. Such a stainless steel metal forming jig is not only difficult to produce at a high speed due to its high quality and strong material but also has a low productivity. In addition, since it is exposed for a certain time in a high temperature furnace for bending a cover glass, Cooling and repeatedly causing oxidation and cracking.
Therefore, there is a need for a molding fixture (mold) made of graphite, which is a material that can easily realize a complicated shape because it does not cause thermal deformation and oxidation even in a high temperature environment and is excellent in moldability. Such a graphite molding fixture, however, Because of brittleness, it can be easily cracked or cracked due to external impact. When machining with a high speed processing machine by fixing a working graphite workpiece with a conventional bolt or vice, it is defective due to cracking or breakage, There is a problem such that it can not be done.
For this reason, there is a demand for a jig capable of stably fixing a brittle graphite workpiece so as to process a graphite forming jig for manufacturing a curved glass of a complex shape.
In addition to the rectangular cover glass of the curved cover glass, a round curved glass is used for a watch-shaped wearable device on the wrist. Such a curved curved cover glass is more difficult to manufacture than a rectangular curved cover glass. A jig is required to stably fix a circular graphite workpiece so as to be able to process a graphite forming jig for molding.
1. Korean Patent No. 10-1260434 (May 06, 2013) 2. Korean Patent No. 10-1404494 (June 10, 2014)
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a circular graphite workpiece having a flat cylindrical shape hardly fixed by a jig such as a bolt or a vice, Bolt, or vice, so that the circular graphite workpiece is not cracked or broken at the time of machining, and the circular graphite workpiece can be quickly and stably fixed to the plate of the machine tool such as a high speed machining tool, And to provide a circular pneumatic jig for processing a round graphite forming jig for manufacturing a curved glass.
It is an object of the present invention to provide a graphite workpiece having an upper surface that is larger than an outer edge of a circular workpiece to be machined, a central portion of the upper surface having a lower depth than the height of the circular workpiece, Wherein a recessed space of a circular shape fitted with a predetermined tolerance to the diameter of the processed graphite workpiece is formed in a vertical direction and a seating portion which is in planar contact with the lower surface of the circular workpiece is formed on the bottom surface of the recessed space, A vacuum adsorption block in which a circular vacuum passage communicating with a predetermined width and depth is formed in the seating portion and a lower surface is coupled and fixed to a processing machine jig provided on the plate; And a connection port fixedly coupled to one side surface of the vacuum adsorption block and communicating with the circular vacuum passage to be connected to an external vacuum generator. The circular pneumatic jig for processing a round graphite forming jig for manufacturing a curved glass do.
In the present invention constructed as described above, since a circular workpiece to be processed is easily attracted and fixed by a negative pressure on a seating portion of a circular pneumatic jig to which a bottom surface is fixed on a plate of a machine tool such as a high speed processing machine, The settling time for installing a circular machined graphite workpiece having a flat cylindrical shape, which is difficult to fix with a jig such as a vise, on the jig is greatly reduced, and the processing time of the circular graphite forming jig is greatly shortened, thereby improving the productivity.
In addition, since no excessive force is applied to the brittle graphite workpiece, there is no risk of cracking or breakage, and the circular workpiece is placed in the recessed space of the circular pneumatic jig with a predetermined tolerance. And thus it is possible to manufacture precise circular graphite forming jig since the machining error is reduced.
1 and 2 are perspective views showing a molding tool for a conventional curved glass.
3 is a perspective view (a) and a cross-sectional view (b) of a circular pneumatic jig for securing a circular workpiece graphite workpiece according to an embodiment of the present invention.
4 is a perspective view showing a vacuum path formed in a circular pneumatic jig according to an embodiment of the present invention, highlighted in blue, with a circular workpiece graphite work piece spaced apart from the top.
5 is a perspective view (a) and a cross-sectional view (b) showing a state in which a circular workpiece is mounted and connected to a circular pneumatic jig according to an embodiment of the present invention.
Hereinafter, a preferred embodiment of a circular pneumatic jig for processing a round graphite forming jig for producing curved glass of the present invention will be described in detail with reference to FIGS. 3 to 5 attached hereto.
First, the circular workpiece to be processed and fixed on the circular pneumatic jig of the present invention is indicated as circular, but the accurate shape is a flat cylindrical or elliptical columnar shape.
The circular pneumatic jig 100 of the present invention is a machine tool that is usually installed in a chuck mounted on a plate of a high speed processing machine (not shown), such as a standard machine provided by a manufacturer of a high speed machine, A standard jig manufactured by EROWA of Switzerland) by an adhesive or bolt fastening. Therefore, the lower surface of the circular pneumatic jig 100 is basically flat, and a screw hole for bolt fastening may be formed on a part of the lower surface. The material of the circular pneumatic jig 100 of the present invention is graphite which is excellent in workability and is easy to realize a complicated shape, less deformed even by temperature change, and is low in material cost and processing cost, and is superior in durability to copper or aluminum It may be made of metal.
It should be noted that the circular pneumatic jig according to the present invention can be installed and used in a general machine tool such as a milling machine other than the above-mentioned high speed machining machine.
3 to 5, a circular pneumatic jig 100 for processing a circular graphite forming jig for manufacturing a curved glass according to an embodiment of the present invention comprises a vacuum adsorption block 110 and a connecting hole 120 .
3, the vacuum adsorption block 110 includes an upper surface 112 of the rectangular parallelepiped, a depressed space 114 at the center of the upper surface, and a seat on which a workpiece of graphite is seated, (116), and a circular vacuum passage (117) having a predetermined width and depth in the seating part.
The upper surface 112 of the vacuum adsorbing block is formed with an area larger than the diameter of the workpiece graphite workpiece to accommodate the entirety of the circular workpiece graphite workpiece (A).
The depressed space 114 of the vacuum adsorption block is vertically formed at a central portion of the upper surface 112 and has the same circular shape as that of the circular workpiece A, The graphite workpiece is formed with a predetermined tolerance to the diameter or the outer diameter of the workpiece graphite workpiece so that the workpiece is firmly fitted and horizontally pushed so that the circular workpiece is seated in the recessed space and then the upper surface thereof is machined It is preferable to form the graphite work piece lower than the height of the circular work piece to be processed.
The bottom surface of the recessed space 114 is formed with a seating portion 116 that is in planar contact with the lower surface of the processed graphite workpiece so as to be completely in contact with the lower surface of the circular workpiece.
The seating portion 116 is provided with a circular vacuum passage communicating with a predetermined width and depth in order to suck and fix the lower surface of the processed graphite workpiece by negative pressure (suction force) when the circular workpiece graphite workpiece A is seated thereon, (117). When a negative pressure is applied to the circular vacuum passage 117 through the connection port 120, the lower surface of the circular workpiece A is strongly tightly fixed to the seat portion 116 by the negative pressure formed in the circular vacuum passage 117 .
Finally, the connection port 120 communicating with the circular vacuum passage 117 is screwed to one side of the vacuum adsorption block 110 and connected to the external vacuum generator (not shown) by a flexible vacuum hose. As the vacuum generator, any of a venturi tube operated by compressed air or a vacuum pump may be used.
One of the connectors 120 is a quick connector for coupling to one side of the vacuum adsorption block 110 and a quick connector for coupling to the vacuum hose on the other side, Or for replacement.
The lower surface of the processed graphite workpiece A is brought into close contact with the upper seating portion 116 of the circular vacuum passage 117 formed on the bottom surface of the depressed space of the vacuum suction block so that the upper portion of the vacuum passage 117 is closed , The circular vacuum passage 117 connected to the connection port 120 is evacuated by the operation of the external vacuum apparatus, and a negative pressure is applied. The vacuum passage 117 in which the negative pressure is applied sucks the outer edge or the entirety of the lower surface of the processed graphite workpiece A with negative pressure and the negative pressure acts with a strong attraction force so that the processed graphite workpiece A Is fixed firmly to the circular pneumatic jig 100. As shown in Fig.
Therefore, the circular-shaped processed graphite workpiece (A) used as a circular graphite forming tool for shaping the curved glass after high-speed processing can be quickly and easily applied to the graphite workpiece The time for which the graphite workpiece A is fixed to the circular pneumatic jig 100 is significantly reduced compared to the conventional method and the graphite workpiece A having high brittleness is firmly fixed without contacting with a mechanical device such as a bolt or a vice, The problem of cracking or breakage is solved.
In addition, since the circular workpiece (A) is sandwiched in the recessed space (114) of the circular pneumatic jig with a predetermined tolerance, the circular workpiece (A) is fixed stably without being pushed horizontally The machining error is reduced, and the precision of the finished circular graphite forming jig is increased.
A: Working graphite workpiece
100: Circular pneumatic jig 110: Vacuum adsorption block
112: upper surface 114: depression space
116: seat part 117: circular vacuum passage
120: connector

Claims (2)

1. A pneumatic jig provided on a plate of a machine tool to fix a workpiece,
A graphite workpiece having an upper surface larger than an outer edge of the circular workpiece and containing a circular workpiece at the center thereof and having a depth less than the height of the circular workpiece graphite workpiece, A circular depressed space shaped to have a predetermined tolerance is formed in a vertical direction and a bottom surface of the depressed space is formed with a seating portion which is in planar contact with the lower surface of the circular workpiece to be processed, A vacuum adsorption block in which a circular vacuum passage communicating with a depth is formed and a lower surface thereof is fixedly coupled to a processing machine jig provided on the plate;
And a connection port fixedly coupled to one side surface of the vacuum adsorption block and communicating with the circular vacuum passage to be connected to an external vacuum generator. [5] The circular pneumatic jig for processing a circular graphite forming jig for manufacturing a curved glass according to claim 1,
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KR1020140164836A 2014-11-24 2014-11-24 Circular pneumatic jig for machining circular graphite forming fixture for manufacturing curved glass KR101518045B1 (en)

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KR1020140164836A KR101518045B1 (en) 2014-11-24 2014-11-24 Circular pneumatic jig for machining circular graphite forming fixture for manufacturing curved glass

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106217087A (en) * 2016-06-30 2016-12-14 山东鲁南机床有限公司 A kind of lossless clamping device for thick gum base sheet
KR101697467B1 (en) * 2016-11-15 2017-01-17 윤재호 Method for manufacturing mold for thermoformed glass
KR20180000083U (en) 2016-06-28 2018-01-05 주식회사 태신프라미스 Polishing zig for mobile phone window glass
KR20190000896U (en) 2017-09-30 2019-04-09 주식회사 태신프라미스 Polishing zig for mobile phone window glass
KR102149852B1 (en) * 2020-03-27 2020-09-01 (주)연암테크 Method of maching a fuel tank for satellite projectiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720231U (en) * 1993-09-24 1995-04-11 ローランドディー.ジー.株式会社 Vacuum table
JPH07204961A (en) * 1994-01-21 1995-08-08 Myotoku Kk Vacuum chuck
KR20090094475A (en) * 2008-03-03 2009-09-08 이동근 Zig using vacuum pressing
KR101393029B1 (en) * 2013-03-15 2014-05-14 쿠어스텍아시아 유한회사 Porous chuck having variable vacuum path

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0720231U (en) * 1993-09-24 1995-04-11 ローランドディー.ジー.株式会社 Vacuum table
JPH07204961A (en) * 1994-01-21 1995-08-08 Myotoku Kk Vacuum chuck
KR20090094475A (en) * 2008-03-03 2009-09-08 이동근 Zig using vacuum pressing
KR101393029B1 (en) * 2013-03-15 2014-05-14 쿠어스텍아시아 유한회사 Porous chuck having variable vacuum path

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180000083U (en) 2016-06-28 2018-01-05 주식회사 태신프라미스 Polishing zig for mobile phone window glass
CN106217087A (en) * 2016-06-30 2016-12-14 山东鲁南机床有限公司 A kind of lossless clamping device for thick gum base sheet
KR101697467B1 (en) * 2016-11-15 2017-01-17 윤재호 Method for manufacturing mold for thermoformed glass
KR20190000896U (en) 2017-09-30 2019-04-09 주식회사 태신프라미스 Polishing zig for mobile phone window glass
KR200489809Y1 (en) 2017-09-30 2019-10-21 주식회사 태신프라미스 Polishing zig for mobile phone window glass
KR102149852B1 (en) * 2020-03-27 2020-09-01 (주)연암테크 Method of maching a fuel tank for satellite projectiles

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