US3813820A - Sheet glass core drilling machine - Google Patents

Sheet glass core drilling machine Download PDF

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Publication number
US3813820A
US3813820A US00345883A US34588373A US3813820A US 3813820 A US3813820 A US 3813820A US 00345883 A US00345883 A US 00345883A US 34588373 A US34588373 A US 34588373A US 3813820 A US3813820 A US 3813820A
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US
United States
Prior art keywords
sheet
drilling tool
drilling
fluid
glass
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.)
Expired - Lifetime
Application number
US00345883A
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English (en)
Inventor
C Highberg
G Roesch
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.)
Unicorn Industries Ltd
Engelhard Minerals and Chemicals Corp
Original Assignee
Engelhard Minerals and Chemicals 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 Engelhard Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Priority to US00345883A priority Critical patent/US3813820A/en
Priority to CA196,123A priority patent/CA994555A/en
Priority to FR7410500A priority patent/FR2223316B1/fr
Priority to JP49034335A priority patent/JPS49129289A/ja
Priority to DE2415105A priority patent/DE2415105A1/de
Priority to IT49789/74A priority patent/IT1011179B/it
Priority to BR2475/74A priority patent/BR7402475D0/pt
Priority to GB1417874A priority patent/GB1437641A/en
Application granted granted Critical
Publication of US3813820A publication Critical patent/US3813820A/en
Anticipated expiration legal-status Critical
Assigned to UNICORN INDUSTRIES, PLC A CORP. OF THE UNITED KINGDOM reassignment UNICORN INDUSTRIES, PLC A CORP. OF THE UNITED KINGDOM NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 01/28/1989 Assignors: SUPER-CUT, INC. A CORP. OF DELAWARE
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
    • B23B39/22—Drilling machines with a plurality of working-spindles; Drilling automatons with working-spindles in opposite headstocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2226/00—Materials of tools or workpieces not comprising a metal
    • B23B2226/45—Glass
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/36—Machine including plural tools
    • Y10T408/375—Coaxial tools
    • Y10T408/378—Coaxial, opposed tools
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/65—Means to drive tool
    • Y10T408/675—Means to drive tool including means to move Tool along tool-axis
    • Y10T408/6757—Fluid means

Definitions

  • This invention relates to the drilling of sheets of glass and glass-like material using, for example, diamond grit-type core drills and the like. More particularly, the invention relates to a fluid operating system for advancing and retracting a pair of opposed coaxial drilling tools through their respective alternating operating cycles and especially to the control of the fluid operating system to precisely gauge the depth of cut.
  • the invention has particular utility in connection with the drilling of holes in automobile door lites as is required in the case of door window glass for many current US. makes of automobiles, as well as in the case of lites for patio doors and the like.
  • Diamond grit-type core drills (industrial diamond grit embedded in an annular matrix commonly formed of fused powdered metal) are most commonly used for this purpose.
  • drills Industrial diamond grit embedded in an annular matrix commonly formed of fused powdered metal
  • Prior art machines for the purpose described have conventionally utilized a constant pressure operating system (e.g., a fluid pressure system) to advance the drills into the glass.
  • the respective drills are conventionally connected to the operating rod of the fluid cylinder and then reciprocated by the cylinder and piston through an operating cycle.
  • the depth of cut is conventionally controlled by mechanical stops and electrical switches operatively connected to solenoid-actuated valves in the control system.
  • constant feed rate core drilling The advantages of constant feed rate core drilling include longer drill bit life and adecrease in the required frequency of sharpening.
  • a general discussion of constant feed rate drilling is contained in an article entitled An Improved Method of Diamond Core Drilling Automotive Glass in the periodical publication Industrial Diamond Review of May 1969.
  • a further discussion of constant feed rate drilling is contained in US. Pat. No. 3,710,516 of Joseph B. Kelly. That patent contains a detailed discussion of the advantages achieved by advancing the core drill at a constant speed.
  • the present invention provides an improvement relating to the control of a fluid operating system for a machine of the general type disclosed in the above reference patent, and affords other features and advantages heretofore not obtainable.
  • SUMMARY OF THE INVENTION lt is among the objects of the invention to control with increased precision, the depth of cut of a drill advanced into a sheet of glass or glass-like material at a constant rate of speed.
  • Another object is to reduce the set-up time required to adjust a machine for drilling sheets of glass and other glass-like material to accommodate sheets of different dimensions.
  • Still another object is to eliminate electrical switches for controlling the feeding of drills into sheetsof glass andglass-like material.
  • a further object is to reduce the duration of a glass sheet core drilling operation by advancing the drill at a relatively fast feed rate up to a position close to the surface of the glass and then at a relatively slow feed rate through the glass to a desired depth of cut.
  • the distance of travel during each interval is precisely controlled by adjustable timing means operatively connected to the fluid pressure sys- 3 tem for controlling the duration of the constant feed rate time intervals.
  • the timing means serves to control the positions of the drilling tool at the initiation and termination of the slow extension time interval to control the depth of cut into the glass sheet.
  • the timing means most advantageously includes a separate electronic timer for each of the time intervals.
  • each of the timers is a digital-type timer which is capable of adjustment in very small time increments to afford optimum precision in control and adjustment of the depth of cut, and especially to adjust for progressive wear of the tool bit.
  • FIG. 1 is a sideelevation of a sheet glass core drilling machine embodying the invention'with parts broken away and shown in section for the purpose of illustration;
  • FIG. 2 is a front elevation of the machine of FIG. ll;
  • FIG. 3 is a fragmentary sectional view on an enlarged scale taken on the line 33 of FIG. 2;
  • FIG. 4 is a fragmentary sectional view on the line 4-4 of FIG. 3;
  • FIG. 5 is a fragmentary front elevational view taken from the line 5-5 of FIG. 2;
  • FIG. 6 is a sectional view on an enlarged scale taken on the line 6-6 of FIG. 1;
  • FIG. 7 is a sectional view on an enlarged scale taken on the line 77 of FIG. I.
  • FIGS. 8, 9 and 10 are schematic diagrams illustrating sequentially the fluid pressure system and associated control mechanisms of the invention and the conditions thereof during sequential stages in an operating cycle.
  • FIGS. 1 and 2 there is shown a sheet glass core drilling machine with a fluid pressure operating system utilizing a control means embodying the invention.
  • the machine has an upper spindle assembly A and a lower spindle assembly B adapted for vertical travel alternatingly toward and away from one another through a core drilling cycle.
  • the machine receives a horizontal glass sheet which is held during the drilling operation by a clamp assembly C.
  • the machine is adapted to drill at a predetermined location, a hole in a glass sheet 10 cut to a desired contour for an automobile door lite.
  • the machine is mounted on a granite toe plate 11 which normally rests against a granite surface plate.
  • the location of the toe plate is readily adjustable by means of a water pressure system whereby water is forced into a shallow recess in the bottom surface of the toe plate through vertical passages to counteract the weight of the machine and facilitate adjusting the location of the machine on the surface plate. Water is subsequently removed from the recess and a vacuum applied through the same vertical passages to anchor the machine in the desired location.
  • a supporting frame 12 is bolted to the toe plate 11.
  • the upper and lower spindle assemblies A and B are supported for vertical movement alternatingly toward and away from one another in upper and'lower dovetail guides 13 and 14 respectively secured to the frame 12.
  • the advancing and retracting of the spindle assemblies A and B is accomplished by means of hydraulic drive cylinders 15 and 16 respectively mounted at the top of the supporting frame 12 and powered by a fluid pressure system best illustrated in FIGS. 8, 9 and 10.
  • the cylinders 15 and 16 are both located at the upper portion of the machine to provide a location as remote as possible from the splash of water used to lubricate the drills.
  • the piston rod for the drive cylinder 15 is connected directly to the upper spindle assembly B while the piston rod for the drive cylinder 16 is connected to a vertical connecting rod 17 pivotally connected at its lower end to one end ofa rocker arm 18.
  • the arm 18 is connected at its mid portion to the frame 12 for pivotal movement about a horizontal axis.
  • the other end of the rocker arm 18 is connected to a vertical connecting rod 19 which in turn is pivotally connected at its upper end to the lower spindle assembly B (FIG. I).
  • the clamp assembly C best illustrated in FIGS. 3, 4 and 5 includes a horizontal table 20 mounted on the frame 12 and a clamping lever 21.
  • the table 20 is adapted to'support the glass sheet 10 and has a hole 22 for the drill of the lower spindle assembly B.
  • the clamping lever 21 is located above the table 20 and is pivotally connected to brackets 23 on the supporting frame 12.
  • A'clamping jaw 24 with a hole 25 to accommodate the drill of the upper spindle assembly A is pivotally connected to the bifurcated outer end of the clamping lever 21.
  • the clamping jaw 24 is moved by the lever 21 toward and away from the table 20 to grip and hold the glass sheet 10 in the marginal zone surrounding the location of the hole to be drilled;
  • the clamping lever 21 is pivotally connected at its opposite or inner end to a connecting rod 26 extending from the piston of a clamping cylinder 27.
  • spindle assemblies A and B are essentially identical to one another and thus will be described herein only with respect to the upper spindle assembly A. Like numerals will be applied to corresponding parts of the lower spindle assembly B.
  • the assembly A comprises a platform 31 with a slide 32 welded to its outer end (FIGS. 1, 2 and 6).
  • the slide is guided for vertical movement in the dovetail guide 13 and is reciprocated by the drive cylinder 15.
  • the piston of the cylinder 15 is connected to a link that in turn is pivotally connected to the top of the slide 32.
  • the slide 32 supports a spindle 33 with a chuck 34 that receives a core drill 35;
  • the upper end of thespindle 33 has a pulley 36 driven by a V-belt 37 extending from the drive pulley 38 of an electric motor 39.
  • the motor is adjustably mounted on the platform 31 in the manner shown, and is adapted to turn the core drill35 at about 3,100 RPM.
  • an air balance cylinder 40 is provided at the rearward end of the platform 31.
  • Water for lubricating the core drill 35 is supplied through a flexible water conduit (not shown) connected to a rotary coupling which in turn is connected to the spindle 33.
  • the fluid pressure operating system for the drive cylinders l5 and 16 and the control mechanisms associated therewith are best seen in FIGS. 8, 9 and 10.
  • the systems are identical with respect to the upper and lower spindle assemblies A and B and therefore will be described only with respect to the upper spindle assembly A and its associated drive cylinder 15;
  • Fluid pressure is obtained by a constant pressure pump 50 that draws from a reservoir 51 and supplies operating fluid under pressure through a line 52 to the head end of the drive cylinder 15.
  • the supply of pressure through the line 52 is controlled by a four-way solenoid valve 53 shown in its piston extending position in FIGS. 8 and 9 and in its piston retracting position in FIG. 10.
  • the branch 56 has a twoway solenoid valve 57 shown in its open position in FIGS. 8 and and in its closed position in FIG. 9.
  • the branch 56 also has a ball-type check valve 58 and a cross connecting line 59 connecting it to the branch 55 between the check valve 58 and the two-way valve 57.
  • the branch 55 has a pressureand temperaturecompensated, adjustable flow restricter 60 (or flow control) located between the drive cylinder and the cross connecting line 59 and another similar adjustable flow restricter 61 located between the four-way valve 53 and the cross connecting line 59.
  • the two-way valve 57 is in its open position as illustrated in FIGS. 8 and 10. As viewed in FIG. 8, fluid being exhausted from the rod end of the cylinder 15 passes through the two-way valve 57 bypassing the flow restricter 60 and then flows through the flow restricter 61 since the check valve 58 will be in the closed position. This condition provides for relatively fast extension at a constant feed rate. When the two-way valve 57 is in its closed position as illustrated in FIG. 9, fluid being exhausted from the rod end of the drive cylinder 15 will be directed through both the flow restricters 60 and 61. This condition provides for relatively slow extension at a constant feed rate (e.g. 0.06 in. per sec.).
  • a constant feed rate e.g. 0.06 in. per sec.
  • the solenoid 53a for, the four-way valve 53 and the solenoid 57a for the two-way valve 57 are energized by' electronic timers 65 and 66 respectively.
  • the timers 65 and 66 are solid-state electronic timers with digital read-out and pushbutton adjustment of the type sold by Automatic Timing and Controls, Inc. of 203 S. Gulph Rd., King of Prussia, Pa.. under the trade designation 335 A35 lAl OPX. These timers are adjustable in increments of and the digital read-out permits quick push-button setup and adjustment by a machine operator.
  • FIGS. 8, 9 and 10 illustrate sequentially an operating cycle for the upper spindle assembly A.
  • the systems are essentially identical with respect to the upper spindle assembly A and lower spindle assembly B and will be described with reference to the upper spindle assembly A only.
  • FIG. 8 there is shown the initial portion of the operating cycle wherein the upper spindle assembly A is to be advanced at relatively fast travel at a constant speed rate up to a position closely spaced from (e.g., one thirty-second inch from) the surface of the glass sheet 10 but not into engagement with the glass. It is desirable that this portion of the cycle provide an interval of fast travel to minimize the duration of the drilling operation.
  • the system in this condition has been activated by an operator and the timer switch 65a is closed to energize the solenoid 53a so that the fourway valve 53 is in its normal position or moved to the right as viewed in the drawings. Accordingly, fluid pressure is supplied to the head end of the drive cylinder 15 through the line 52.
  • the timer 65 is energized and is timing out a predetermined time interval.
  • the timer switch 66 is open, the solenoid 57a is deenergized, and the two-way valve 57 is in its open position so that fluid being exhausted from the rod end of the drive cylinder 15 bypasses the restricter and is checked only by the flow restricter 61. Since only one of the two restricters is connected in the exhaust line, a constant feed rate is provided but the rate of piston travel is relatively fast.
  • the timer 66 is energized and the interval of fast travel continues until the timer 66 times out to close timer switch 66a and deenergize solenoid 57a. Thus, the interval of fast travel is determined by the setting of the timer 66.
  • the depth of cut may be pre-adjusted in increments of 0.006 inch.
  • FIG. 10 which illustrates the condition of the system during retraction of the upper spindle assembly A
  • the timer 65 has timed out and the switch 650 has opened to deenergize the solenoid 53a. Consequently, the four-way valve 53 is moved to the left or to its reverse position. In this position pressure is supplied by the pump 50 through the line 54 to the rod end of the drive cylinder 15. Both flow restricters 60 and 61 are bypassed since the branch 56 is open through the check valve 58 and the two-way solenoid valve 57. The retraction will proceed until the upper spindle assembly A is fully retracted to the starting position shown in FIG. 8.
  • the lower spindle assembly B is preferably cycled before the upper spindle assembly A and its cycle is iden tical to the cycle described above with respect to the fluid pressure system for the upper spindle assembly A.
  • the releasing of the glass by the clamp assembly C is preferably controlled by a sequencing timer (not shown) which is energized by the operator when he pushes a start button.
  • the start button also energizes a solenoid valve that actuates the clamping cylinder 27 to cause the clamping jaw 24 to clamp the glass sheet against the table 20.
  • the initial clamping pressure is of a relatively high order, sufficient to counteract any force applied against the glass by the core drill 35 of the lower spindle assembly B as it advances upwardly into the glass from below.
  • the clamping pressure applied through the clamping cylinder 27 may be reduced to a nominal level in response to the sequencing timer since the force applied against the glass by the core drill 35 of the upper spindle assembly A is counteracted by the table which is rigidly supported by the frame.
  • the depth of cut can be very accurately controlled (e.g., in increments of 0.006 inch) and uniformly repeated during each cycle. Also the point of initiation of the slow feed interval can be precisely determined according to the glass thickness using the timer 66.
  • the operator can adjust the depth of cut by trial and error if desired by merely punching the pushbuttons on the respective timer to increase or decrease a prior digital read-out in increments of 0.0l sec. As indicated above, this translates into depth increments of approximately 0.006 inch where the feed rate is 0.06 in. per sec.
  • the slow travel feed rate can be varied by adjusting the flow restricters 60 and 61.
  • the speeds can be varied, for example, between limits of 0.02 in. per sec. to 0.5 in. sec. within tolerances of 10.001 in.
  • the increments of time adjustment (e.g., 0.01 inch) thus translate directly into distance increments depending on the speed rate.
  • Apparatus for driving a drilling tool through an operating cycle of reciprocating travel including an interval of drilling into a sheet of glass or glass-like material comprising:
  • a fluid cylinder operatively connecte to said drilling tool
  • fluid pressure means operatively connected to said fluid cylinder to extend said drilling tool at a constant feed rate interval of fast travel up to a position close to the surface of said sheet and a constant feed rate interval of slow travel from engagement of said drilling tool with the surface of said sheet to a predetermined depth of cut into said sheet
  • adjustable timing means operatively connected to said fluid pressure means for controlling the duration of said constant feed rate time intervals whereby to control the positions of said drilling tool at the initiation and termination of said slow extension time interval to control the depth of cut into said sheet.
  • said fluid pressure means includes a first flow restricter and a second flow restricter and valve means for selectively connecting only one of said restricters in flow restricting relation to said drive cylinder to control fluid flow rate and provide said fast travel and for selectively connecting both of said restricters in flow restricting relation to said drive cylinder to control fluid flow rate and provide said slow travel.
  • valve means comprises two solenoid-operated valves.
  • said adjustable timing means comprises two electronic timers.
  • Apparatus for drilling holes in a sheet of glass or glass-like material with a pair of opposed cooperating coaxial drilling tools located on opposite sides of the sheet and adapted to be fed alternatingly into said sheet about one-half the depth thereof comprising:
  • fluid control means operatively connected to said fluid cylinder to extend said drilling tool at a'constant feed rate time interval of fast travel up to a position close to the surface of said sheet and a constant feed rate time interval of slow travel from engagement of said drilling tool with the surface of said sheet to a predetermined depth of cut into said sheet, and
  • adjustable timing means operatively connected to said fluid control means for controlling the duration of said constant feed rate time intervals whereby to control the positions of said drilling tool at the initiation and termination of said slow extension time interval to control the depth of cut into said sheet.
  • said fluid pressure means includes control means for applying a relatively high clamping during the drilling operation of said lower drilling tool and a relatively low clamping pressure during the drilling operation of said upper dril-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Boring (AREA)
US00345883A 1973-03-29 1973-03-29 Sheet glass core drilling machine Expired - Lifetime US3813820A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00345883A US3813820A (en) 1973-03-29 1973-03-29 Sheet glass core drilling machine
FR7410500A FR2223316B1 (https=) 1973-03-29 1974-03-27
JP49034335A JPS49129289A (https=) 1973-03-29 1974-03-27
CA196,123A CA994555A (en) 1973-03-29 1974-03-27 Sheet glass core drilling machine
DE2415105A DE2415105A1 (de) 1973-03-29 1974-03-28 Kernbohrmaschine fuer flachglas
IT49789/74A IT1011179B (it) 1973-03-29 1974-03-28 Apparecchiatura per forare lastre di vetro
BR2475/74A BR7402475D0 (pt) 1973-03-29 1974-03-28 Aperfeicoamentos em aparelho para acionar uma ferramenta perfuratriz e um aparelho para abrir furos numa chapa de vidro ou material semelhante ao vidro
GB1417874A GB1437641A (en) 1973-03-29 1974-03-29 Sheet glass drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00345883A US3813820A (en) 1973-03-29 1973-03-29 Sheet glass core drilling machine

Publications (1)

Publication Number Publication Date
US3813820A true US3813820A (en) 1974-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00345883A Expired - Lifetime US3813820A (en) 1973-03-29 1973-03-29 Sheet glass core drilling machine

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Country Link
US (1) US3813820A (https=)
JP (1) JPS49129289A (https=)
BR (1) BR7402475D0 (https=)
CA (1) CA994555A (https=)
DE (1) DE2415105A1 (https=)
FR (1) FR2223316B1 (https=)
GB (1) GB1437641A (https=)
IT (1) IT1011179B (https=)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073094A (en) * 1977-05-31 1978-02-14 Walz Robert A Method and apparatus for repairing a crack in a pane of plate glass
DE2919601A1 (de) * 1978-06-05 1979-12-06 Ford Werke Ag Kernbohrvorrichtung fuer glasplatten
US4208229A (en) * 1978-12-15 1980-06-17 Giardini Dante S System for repairing panes of glass
FR2489725A1 (fr) * 1980-09-11 1982-03-12 Flachglas Ag Machine pour percer des pieces meplates en forme de plaque, telles que des vitres
FR2599286A1 (fr) * 1986-06-03 1987-12-04 Benteler Werke Ag Tete de percage multibroches, pour percer des plaques en verre ou en des materiaux cassants analogues.
US4730420A (en) * 1985-02-06 1988-03-15 Benteler-Werke Ag Drilling device for drilling plates susceptible to breaking
US4955763A (en) * 1989-02-10 1990-09-11 Toledo Automated Concepts, Inc. Glass drilling machine
US5152641A (en) * 1991-10-15 1992-10-06 Royal Tool, Inc. Method and apparatus for controlling glass drilling
US5404641A (en) * 1993-08-16 1995-04-11 Avco Corporation Method of drilling through contiguous plate members using a robotic drill clamp
WO1997010914A1 (en) * 1995-09-19 1997-03-27 Fabor S.R.L. Glass plate automatic drilling and milling machine
US20040029509A1 (en) * 2002-05-24 2004-02-12 Bimatech, S.R.L. Fixture for drilling sheets of fragile material, in particular, sheets of glass
US20040176017A1 (en) * 2003-02-25 2004-09-09 Aleksander Zelenski Apparatus and methods for abrading a work piece
US20040179908A1 (en) * 2002-06-28 2004-09-16 Kazuaki Bando Brake rotating body of vehicle
RU2246401C1 (ru) * 2003-10-21 2005-02-20 Калининградский государственный технический университет Станок-автомат для двустороннего сверления изделий из мягких неметаллических материалов, полудрагоценных камней
US20060182504A1 (en) * 2005-01-25 2006-08-17 Asahi Glass Company, Limited Method for manufacturing a doughnut-shaped glass substrate
US7125320B1 (en) * 2003-10-27 2006-10-24 Corning Incorporated Apparatus and method for grinding and/or polishing an edge of a glass sheet
US20070075473A1 (en) * 2005-09-30 2007-04-05 Z. Bavelloni S.P.A. Machine for working on glass sheets
CN103170662A (zh) * 2013-03-13 2013-06-26 浙江虎鼎机械制造有限公司 一种双面铣加工钻床手柄杆对称扁身专用机
US20130228960A1 (en) * 2010-10-21 2013-09-05 Mitsubishi Heavy Industries, Ltd. Clamping device
CN103341916A (zh) * 2013-07-23 2013-10-09 济南志力数控机械有限公司 石墨块专用卧式多主轴双面数控钻床
CN109604686A (zh) * 2018-12-25 2019-04-12 广东毅马集团有限公司 一种管桩法兰端板双面加工铣床
RU2786249C1 (ru) * 2022-02-28 2022-12-19 Общество с ограниченной ответственностью "ТЕХНЕТЛАБ" Станок-автомат для двустороннего сверления

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5278215A (en) * 1975-10-31 1977-07-01 Suzukou Shiyouji Kk Apparatus for drilling of flat glass
DE3534426A1 (de) * 1985-02-06 1986-08-07 Benteler-Werke Ag Werk Neuhaus, 4790 Paderborn Bohrvorrichtung zum bohren von bruchempfindlichen platten
DE19748289C2 (de) * 1997-06-18 2002-07-18 Bernhard Eisenbach Bearbeitungsvorrichtung

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US3124016A (en) * 1964-03-10 reaser
US3401583A (en) * 1965-09-07 1968-09-17 Heald Machine Co Machine tool with tool feed control
US3461615A (en) * 1966-03-24 1969-08-19 Libbey Owens Ford Glass Co Drilling machines
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US3710516A (en) * 1971-02-19 1973-01-16 Ppg Industries Inc Method of drilling glass

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073094A (en) * 1977-05-31 1978-02-14 Walz Robert A Method and apparatus for repairing a crack in a pane of plate glass
DE2919601A1 (de) * 1978-06-05 1979-12-06 Ford Werke Ag Kernbohrvorrichtung fuer glasplatten
US4194322A (en) * 1978-06-05 1980-03-25 Ford Motor Company Constant force sheet glass cutting drill assembly
US4208229A (en) * 1978-12-15 1980-06-17 Giardini Dante S System for repairing panes of glass
FR2489725A1 (fr) * 1980-09-11 1982-03-12 Flachglas Ag Machine pour percer des pieces meplates en forme de plaque, telles que des vitres
US4573835A (en) * 1980-09-11 1986-03-04 Flachglass Aktiengeselischaft Machine for boring a plate workpiece
US4730420A (en) * 1985-02-06 1988-03-15 Benteler-Werke Ag Drilling device for drilling plates susceptible to breaking
FR2599286A1 (fr) * 1986-06-03 1987-12-04 Benteler Werke Ag Tete de percage multibroches, pour percer des plaques en verre ou en des materiaux cassants analogues.
US4955763A (en) * 1989-02-10 1990-09-11 Toledo Automated Concepts, Inc. Glass drilling machine
US5152641A (en) * 1991-10-15 1992-10-06 Royal Tool, Inc. Method and apparatus for controlling glass drilling
US5404641A (en) * 1993-08-16 1995-04-11 Avco Corporation Method of drilling through contiguous plate members using a robotic drill clamp
US5542796A (en) * 1993-08-16 1996-08-06 Avco Corporation Robotic drill clamp
WO1997010914A1 (en) * 1995-09-19 1997-03-27 Fabor S.R.L. Glass plate automatic drilling and milling machine
US5909906A (en) * 1995-09-19 1999-06-08 Intermac S.R.L. Glass plate automatic drilling and milling machine
US20040029509A1 (en) * 2002-05-24 2004-02-12 Bimatech, S.R.L. Fixture for drilling sheets of fragile material, in particular, sheets of glass
US20040179908A1 (en) * 2002-06-28 2004-09-16 Kazuaki Bando Brake rotating body of vehicle
US20040176017A1 (en) * 2003-02-25 2004-09-09 Aleksander Zelenski Apparatus and methods for abrading a work piece
RU2246401C1 (ru) * 2003-10-21 2005-02-20 Калининградский государственный технический университет Станок-автомат для двустороннего сверления изделий из мягких неметаллических материалов, полудрагоценных камней
US7125320B1 (en) * 2003-10-27 2006-10-24 Corning Incorporated Apparatus and method for grinding and/or polishing an edge of a glass sheet
US20060258270A1 (en) * 2003-10-27 2006-11-16 Brown James W Apparatus and method for grinding and/or polishing an edge of a glass sheet
US7488145B2 (en) * 2005-01-25 2009-02-10 Asahi Glass Company, Limited Method for manufacturing a doughnut-shaped glass substrate
US20060182504A1 (en) * 2005-01-25 2006-08-17 Asahi Glass Company, Limited Method for manufacturing a doughnut-shaped glass substrate
US20070075473A1 (en) * 2005-09-30 2007-04-05 Z. Bavelloni S.P.A. Machine for working on glass sheets
US20130228960A1 (en) * 2010-10-21 2013-09-05 Mitsubishi Heavy Industries, Ltd. Clamping device
US9421654B2 (en) * 2010-10-21 2016-08-23 Mitsubishi Heavy Industries Machine Tool Co., Ltd. Clamping device having ring shape with hydraulically down force clamping means
CN103170662A (zh) * 2013-03-13 2013-06-26 浙江虎鼎机械制造有限公司 一种双面铣加工钻床手柄杆对称扁身专用机
CN103170662B (zh) * 2013-03-13 2015-08-12 浙江虎鼎机械制造有限公司 一种双面铣加工钻床手柄杆对称扁身专用机
CN103341916A (zh) * 2013-07-23 2013-10-09 济南志力数控机械有限公司 石墨块专用卧式多主轴双面数控钻床
CN109604686A (zh) * 2018-12-25 2019-04-12 广东毅马集团有限公司 一种管桩法兰端板双面加工铣床
RU2786249C1 (ru) * 2022-02-28 2022-12-19 Общество с ограниченной ответственностью "ТЕХНЕТЛАБ" Станок-автомат для двустороннего сверления

Also Published As

Publication number Publication date
FR2223316A1 (https=) 1974-10-25
JPS49129289A (https=) 1974-12-11
IT1011179B (it) 1977-01-20
BR7402475D0 (pt) 1974-12-24
CA994555A (en) 1976-08-10
DE2415105A1 (de) 1974-10-10
FR2223316B1 (https=) 1978-01-06
GB1437641A (en) 1976-06-03

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