WO2002001264A1 - Dispositif et procede de distribution, d'acheminement et de coupe/polissage pour fibres optiques - Google Patents

Dispositif et procede de distribution, d'acheminement et de coupe/polissage pour fibres optiques Download PDF

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Publication number
WO2002001264A1
WO2002001264A1 PCT/US2001/019773 US0119773W WO0201264A1 WO 2002001264 A1 WO2002001264 A1 WO 2002001264A1 US 0119773 W US0119773 W US 0119773W WO 0201264 A1 WO0201264 A1 WO 0201264A1
Authority
WO
WIPO (PCT)
Prior art keywords
filament
optical fiber
set forth
dispensing
substrate
Prior art date
Application number
PCT/US2001/019773
Other languages
English (en)
Inventor
Ronald D. Wilson
Keith A. Langenbeck
Original Assignee
Fiberconnex Corporation
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 Fiberconnex Corporation filed Critical Fiberconnex Corporation
Priority to AU2001270016A priority Critical patent/AU2001270016A1/en
Publication of WO2002001264A1 publication Critical patent/WO2002001264A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3608—Fibre wiring boards, i.e. where fibres are embedded or attached in a pattern on or to a substrate, e.g. flexible sheets
    • G02B6/3612—Wiring methods or machines
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B19/226—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of the ends of optical fibres
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections

Definitions

  • the present invention provides an apparatus and method for dispensing and routing precise lengths of single strand graded index or multimode optical fiber filaments onto a prepared substrate.
  • the substrate is provided with a suitable adhesive to retain the optical fibers in the desired position after dispensation.
  • the present invention also provides an apparatus for terminating a predetermined length of optical fiber including means for cutting and polishing the optical fiber filament endfaces.
  • the present invention provides for dispensing, routing and terminating multiple strands of optical fiber filament individually along pre-determined point-to-point paths in order to create a "wiring" panel or harness that results in high density placement of circuit elements or signal conductors.
  • the overall placement of optical fibers is sufficiently accurate to permit subsequent further automated assembly and interconnection methods to be used to substantially reduce the time needed to terminate each optical fiber connection.
  • the present invention still further provides an apparatus for cutting and polishing optical fiber filament endfaces during the dispensing and routing of each discrete fiber filament.
  • the cutting and polishing of the optical fiber filament endfaces is carried out in such a way that at least a slightly convex surface geometry is provided for the optical fiber endfaces to facilitate efficient signal transmission between adjacent optical fiber filaments when they are interconnected to provide a signal communication path.
  • an optical fiber filament dispensing and routing apparatus wherein a supply spool for the optical fiber filament is mounted directly on a traveling carriage or dispensing head assembly.
  • the dispensation of the optical fiber filament onto a substrate substantially eliminates or at least reduces the risk of the optical fiber filament breaking due to high tensile and torsional stresses, in particular.
  • FIGURE 1 is a side elevation of an optical fiber dispensing, routing and terminating apparatus in accordance with the present invention
  • FIGURE 2 is a side elevation of a portion of the apparatus shown in FIGURE 1 on a larger scale;
  • FIGURE 3 is a side elevation view of the apparatus dispensing and routing head on a still larger scale;
  • FIGURE 4 is a detail view of an optical fiber dispensing tip and pressure foot roller;
  • FIGURE 5 is a detail view of the cut and polish assembly.
  • DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT [0015]
  • like parts are marked throughout the specification and drawings with the same reference numerals, respectively.
  • the drawing figures are not necessarily to scale and certain features may be shown in somewhat generalized or schematic form in the interest of clarity and conciseness.
  • an optical fiber dispensing, routing and terminating apparatus in accordance with the invention is illustrated and generally designated by the numeral 10.
  • the apparatus 10 comprises a frame 12, including a base member 13, mounted on a series of adjustable feet 14 and supporting an anti-vibration surface plate 16.
  • the surface plate 16 supports spaced apart upstanding stanchions 18 which, in turn, support elongated, spaced apart, parallel linear bearing support rods 20, one shown.
  • Support rods 20 support an "x" axis carriage and drive assembly 22 including a linear bearing assembly 24.
  • Drive assembly 22 supports spaced apart, parallel linear bearing support rods 26 which are adapted to support a "y" axis carriage and drive assembly 28.
  • Suitable linear bearings 27 support the drive assembly 28 on the drive assembly 22 including the linear bearing rods 26.
  • a "z" axis angular or rotary drive means is provided by a precision coaxial rotary stepping motor 30 which is operable to rotate a dispensing head 33 including a support member 34 for rotation about the z axis 36, see FIGURE 2 also.
  • the dispensing head 33 including the generally C-shaped support member 34, is supported on a suitable rotary bearing assembly 38, FIGURE 2.
  • the anti-vibration surface plate 16 in a preferred embodiment, includes a stone plate supported on the frame 12 to provide a vibration-free environment for the apparatus positioning carriage including the x-axis carriage and drive assembly 22 and the y axis carriage and drive assembly 28.
  • the x and y axes carriage and drive assemblies 22 and 28 may include suitable linear stepping motors or servomotors operable by a programmable microprocessor based control system 11, FIGURE 1, for positioning the dispensing head 33 including the somewhat C-shaped support member 34.
  • the positioning of the head 33 rotationally about the z axis 36 may be controlled by the motor 30 which is also adapted to be controlled by the control system 11.
  • the surface 17 of the plate 16, see FIGURES 1 and 2, is adapted to firmly support a substrate 40.
  • Substrate 40 includes a suitable adhesive coating 40a on the surface thereof, see FIGURES 3 and 4, onto which optical fiber filaments may be dispensed and routed in a predetermined pattern, respectively.
  • Suitable means for holding the substrate 40 may include a vacuum hold-down device, not shown in detail, and of a type known in the art.
  • a motor driven spool 42 of flexible optical fiber filament is suitably mounted on the support member 34 by an internal collet type spindle 44.
  • Spindle 44 is operably connected to a drive motor, not shown, for a controlled rate of unwinding or despooling optical fiber filament 47.
  • a suitable so-called level wind device 46 is provided to guide and control dispensation of continuous optical fiber filament 47 as it is unwound from the spool 42.
  • the optical fiber filament 47 is looped once around a relatively large diameter drive roller 48, FIGURE 3, that is suitably connected to a stepper motor and shaft encoder, not shown in detail, supported on dispensing head support member 34.
  • Follower rollers 50 are mounted on a disc 52 and are equally spaced around the drive roller 48 to provide a controlled driving pressure against the optical fiber filament 47.
  • the follower rollers 50 may be released by actuating a lever 53, FIGURE 3, connected to the disc 52 to provide clearance for threading the optical fiber 47 onto and off of the drive roller 48.
  • the rollers 48 and 50 are each preferably fabricated of aluminum or other suitable metal hub portions 48a and 50a and precision ground urethane outer peripheral surface coatings or "tire" portions 48b and 50b, each having a relatively firm durometer.
  • the large wrap angle (360°) subtended by the optical fiber filament 47 around roller 48 insures a high precision measurement of the fiber length dispensed by the dispensing head 33.
  • a fiber filament feed precision of 0.001 inches can be readily obtained.
  • a suitable sensor may be associated with level wind device 46 for coordinating the operation of drive motors for spool 42 and roller 48 to maintain proper tension on fiber filament 47 between the spool 42 and roller 48.
  • an important feature of the invention is provided by mounting the optical fiber filament dispensing spool 42 on the dispensing head 33 whereby the optical fiber filament 47 may be pulled off of the spool 42 by the motor driven roller 48 or motor driven off of spool 42 in coordination with motor driven roller 48 without imparting any torsional twist into the filament 47. Accordingly, regardless of rotational movement of the dispensing head 33 with respect to the carriage and drive assemblies 22 and 28, the filament 47 may be dispensed onto the substrate 40 without any tendency for the filament to coil or break free from the adhesive layer of the substrate as a result of any torsional wind up which might be imparted to the filament if the dispensing spool were not mounted for movement with the dispensing head.
  • the spool 42 To thread the optical fiber filament 47, an operator would install the spool 42, as shown, unroll about 15.0 inches of fiber filament 47, unlatch the follower cam lever and disc 52 and, following a threading diagram, the filament 47 is fed through the level wind mechanism 46, around the drive roller 48 and then inserted into the throat of a filament end cut and polish assembly 56. Sufficient fiber filament length would be initially inserted so that it protruded about 2.0 inches past the dispensing end of a tubular optical fiber delivery tip or dispensing guide member 58 mounted on the cut and polish assembly 56 and including a lower distal dispensing end 59, see FIGURE 4.
  • the filament may be automatically fed through the tubular delivery tip or guide member 58 and under a pressure foot roller assembly 60, FIGURES 3 and 4, including a roller 61 mounted on a suitable support member 62.
  • the pressure foot roller assembly 60 is suitably mounted on support member 62 which is biased by a suitable coil spring 64 to cause roller 61 to press the optical fiber filament 47 onto the adhesive surface of substrate 40.
  • the axis of rotation 61a of the roller 61, FIGURE 4 intersects the z axis 36 and is normal thereto.
  • Support member 62 is suitably supported on a support member 65 of the dispensing head 33.
  • Support member 65 preferably includes a suitable linear precision stepping motor, not shown, for precise positioning of the delivery tip or guide member 58, with respect to the substrate 40, along axis 36.
  • a rotary union 66 is operably connected to suitable conductor means 68 for conducting control signals to the drive motor for the roller 48, the aforementioned linear stepping motor for support member 65 and also to provide suitable control signals to the cut and polish assembly 56.
  • the optical fiber filament 47 must be supported close to each side of a point at which the filament will be cut and polished. This operation may be accomplished by a solenoid operated clamp, not shown, that provides lateral support and immobilizes the filament during the cutting and polishing cycle. Cutting and polishing of opposite ends of a discrete length of filament 47 that is to be dispensed onto the substrate 40 is provided in part by a suitable small water mist nozzle and a suitable vacuum conduit, neither shown, for removal of any glass fiber or dust and residual mist from the cut and polish assembly 56. Water or another suitable cutting fluid is necessary for proper abrasive polishing of the ends of the filament.
  • a suitable rotatable cut and polish wheel 70 is supported for rotation on the cut and polish assembly 56.
  • the wheel 70 is operable to rotate and "wobble" outside of its normal plane of rotation to provide a slightly convex endface of a predetermined length of filament 47 when it is cut to such length to enhance light signal transmission through the connector to which the end of the filament will be connected. All feed lengths of optical fiber filament to be dispensed onto the substrate 40 are referenced from the previous filament cut end and there is no cumulative feed length error from one length of fiber to the next as the metered feed length is reset after each cutoff operation.
  • the cut and polish assembly 56 which includes the filament cut and polishing wheel 70.
  • the cut and polish assembly 56 includes a frame member 80 supported on the head 33 and supporting spaced apart coaxially aligned tubular guide members 82 and 84.
  • the tubular guide member 84 also supports the filament dispensing or delivery member 58.
  • Frame 80 is supported on a member 63 forming part of the head 33.
  • a somewhat C-shaped bearing member 86 for supporting a spherical support member 88 for movement relative to the bearing member.
  • Spherical support member 88 is provided with a slot formed therein and designated by the numeral 90.
  • the spherical support member 88 is also provided with suitable passages to allow the filament 47 to be threaded through the tubular guide members 82 and 84 and through the spherical support member 88.
  • the cut and polish wheel 70 is mounted on suitable spaced apart bearings 92 which, in turn, are supported on a linear slide member 94 mounted on a support 96 and operably engageable with a reversible linear positioning motor 98.
  • the support 94 and the bearings 92 are disposed in a suitable cutaway portion of the spherical support member 88 to accommodate movement of the cut and polish wheel 70 into and out of a position for cutting the filament 47 and also to permit limited wobbling motion of the cut and polish wheel 70 to provide polished, slightly convex, transverse endfaces for the ends of the filament 47 that are formed when the filament is cut by the wheel 70.
  • the wheel 70 is shown in a position in FIGURE 5 wherein it has cut through the filament 47.
  • the cut and polish wheel 70 is rotatably driven by a suitable rotary motor 100 drivably connected to the wheel 70 by a flexible right angle drive shaft 102.
  • a rotary indexing motor 104 is mounted on the frame 80 and drivably connected to a rotary cam 106.
  • Cam 106 is engaged with at least one cam follower 108 suitably connected to the member 94.
  • Cooperation between the cam 106 and the cam follower 108 provides for inducing a wobbling motion to the cut and polish wheel 70 when it is moved into the cutting position shown in FIGURE 5' so that, after a cut has been made in the filament 47 the opposed ends of the filament formed by the cut are polished and formed to have a slightly convex surface configuration.
  • a cutting and polishing fluid dispensing nozzle and a vacuum withdrawal tube for evacuating cuttings as well as spent cutting and polishing fluid are also provided for the assembly 56 but are not shown in FIGURE 5.
  • the trailing end of a predetermined length of filament and the leading end of the next filament to be dispensed are formed by controlling the assembly 56 to move the cut and polish wheel 70 into the position shown in FIGURE 5 while being rotatably driven to cut the filament 47 and to form a convex polished endface at the trailing end of one predetermined length of filament and the leading end of the next filament.
  • the cut and polish wheel 70 is, by way of example, preferably of a diameter of about 0.250 inches, a thickness of about 0.010 inches and is formed to include a suitable abrasive laden cutting surface such as a surface coated with diamond dust.
  • the head 33 is removably mounted on the apparatus 10 in a manner which permits rapid interchange with a spare unit for purposes of maintenance, change in optical fiber filament size, material or other parameters which may require a change in the operation of the apparatus 10.
  • the bearing 38 and drive motor 30 are operable to provide precise angular positioning of the guide member 58 with respect to the z axis 36.
  • the support 62 for the roller 60, including the roller element 61 has a relatively short travel distance along axis 36 (under about 0.100 inches) for the purpose of pressing the optical fiber filament into the adhesive surface 40a of substrate 40 with a known and controllable force.
  • the vertical actuator may also comprise a precision linear stepping motor and encoder capable of very high positioning accuracy and accurate force generation.
  • the apparatus 10 including the optical fiber dispensing head 33, is capable of tracing relatively complex point-to-point paths with a predetermined length of optical fiber filament with very high positioning accuracy and repeatability.
  • Orthogonal and acute angle straight line paths, simple curves and a combination of these paths may be provided for laying a substantial number of optical fiber filaments onto a substrate, such as the substrate 40.
  • more complex paths of the optical fiber filament may be provided.
  • the completed circuit board layer may be covered with a second substrate in order to "sandwich" plural layers of optical fiber filaments permanently.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

Cette invention concerne un dispositif de distribution de filaments de fibres (10) comprenant une tête de distribution (33) montée sur des éléments porteurs à axe x et y (22, 28) qui sont supportés en rotation sur un axe a z (36). Une bobine de distribution de fibres optiques (42), qui est montée sur la tête de distribution, assure le dévidage d'une longueur ininterrompue d'un filament de fibre optique (47), lequel est enroulé sur un galet d'entraînement (48), est acheminé au travers d'un ensemble de coupe et de polissage (56) avant de traverser un élément de guidage (58).L'ensemble de coupe et de polissage comprend une roue de coupe et de polissage (70) entraînée par moteur et supportée en rotation et en oscillation latérale, qui sectionne un tronçon de filament d'une longueur déterminée et qui polit les extrémités dudit tronçon, lesquelles extrémités présentent de préférence une surface à géométrie convexe engendrée par la roue oscillante de coupe et de polissage.
PCT/US2001/019773 2000-06-26 2001-06-21 Dispositif et procede de distribution, d'acheminement et de coupe/polissage pour fibres optiques WO2002001264A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001270016A AU2001270016A1 (en) 2000-06-26 2001-06-21 Optical fiber dispensing, routing and termination apparatus and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21414700P 2000-06-26 2000-06-26
US60/214,147 2000-06-26

Publications (1)

Publication Number Publication Date
WO2002001264A1 true WO2002001264A1 (fr) 2002-01-03

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AU (1) AU2001270016A1 (fr)
WO (1) WO2002001264A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2284582A1 (fr) * 2008-05-07 2011-02-16 Nitta Corporation Appareil de câblage pour fibres optiques
CN110459944A (zh) * 2019-08-22 2019-11-15 中国人民解放军国防科技大学 一种光纤跳线头二维高精定位装置
CN110587434A (zh) * 2019-09-30 2019-12-20 凯德仪表(深圳)有限公司 一种溶氧电极用弧面打磨装置
WO2020012230A1 (fr) 2018-07-12 2020-01-16 Bosch Car Multimedia Portugal S.a. Dispositif et procédé de placement et de collage d'un filament sur un substrat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450623A (en) * 1981-12-18 1984-05-29 Kollmorgen Technologies Corporation Process for the manufacture of circuit boards
US5259051A (en) * 1992-08-28 1993-11-02 At&T Bell Laboratories Optical fiber interconnection apparatus and methods of making interconnections
US6073670A (en) * 1997-10-31 2000-06-13 Isogrid Composites, Inc. Multiple fiber placement head arrangement for placing fibers into channels of a mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450623A (en) * 1981-12-18 1984-05-29 Kollmorgen Technologies Corporation Process for the manufacture of circuit boards
US5259051A (en) * 1992-08-28 1993-11-02 At&T Bell Laboratories Optical fiber interconnection apparatus and methods of making interconnections
US6073670A (en) * 1997-10-31 2000-06-13 Isogrid Composites, Inc. Multiple fiber placement head arrangement for placing fibers into channels of a mold

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2284582A1 (fr) * 2008-05-07 2011-02-16 Nitta Corporation Appareil de câblage pour fibres optiques
EP2284582A4 (fr) * 2008-05-07 2012-11-21 Nitta Corp Appareil de câblage pour fibres optiques
WO2020012230A1 (fr) 2018-07-12 2020-01-16 Bosch Car Multimedia Portugal S.a. Dispositif et procédé de placement et de collage d'un filament sur un substrat
CN110459944A (zh) * 2019-08-22 2019-11-15 中国人民解放军国防科技大学 一种光纤跳线头二维高精定位装置
CN110459944B (zh) * 2019-08-22 2020-09-01 中国人民解放军国防科技大学 一种光纤跳线头二维高精定位装置
CN110587434A (zh) * 2019-09-30 2019-12-20 凯德仪表(深圳)有限公司 一种溶氧电极用弧面打磨装置
CN110587434B (zh) * 2019-09-30 2021-09-14 凯德仪表(深圳)有限公司 一种溶氧电极用弧面打磨装置

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