EP3238848B1 - Verfahren zum ausgleich eines fertigungsbedingten versatzes bei einem werkzeugschieber - Google Patents

Verfahren zum ausgleich eines fertigungsbedingten versatzes bei einem werkzeugschieber Download PDF

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Publication number
EP3238848B1
EP3238848B1 EP17161167.6A EP17161167A EP3238848B1 EP 3238848 B1 EP3238848 B1 EP 3238848B1 EP 17161167 A EP17161167 A EP 17161167A EP 3238848 B1 EP3238848 B1 EP 3238848B1
Authority
EP
European Patent Office
Prior art keywords
slide
slider
guide
driver
strips
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.)
Active
Application number
EP17161167.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3238848A1 (de
Inventor
Markus Meyer
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.)
Voestalpine Camtec GmbH
Original Assignee
Voestalpine Camtec GmbH
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 Voestalpine Camtec GmbH filed Critical Voestalpine Camtec GmbH
Publication of EP3238848A1 publication Critical patent/EP3238848A1/de
Application granted granted Critical
Publication of EP3238848B1 publication Critical patent/EP3238848B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00583—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes the container for the material to be dispensed being deformable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape
    • B21D28/325—Perforating, i.e. punching holes in other articles of special shape using cam or wedge mechanisms, e.g. aerial cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/40—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by wedge means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents

Definitions

  • the invention relates to a tool slide.
  • Wedge drives are used in tools in metalworking, e.g. used in forming presses. Associated with these wedge drives are usually facilities or tools that allow punching or otherwise deforming.
  • a conventional wedge drive has an upper guide part comprising a slider element and a slider guide element and a lower guide part comprising a driver element and vice versa. The wedge drives are moved by the slider guide element by a drive applying a generally vertical pressing force.
  • On the part of the driver element wedge drives are mounted in the tool or the press on a base plate on which the workpiece to be machined is placed directly or via a corresponding support device.
  • a wedge drive for redirecting a vertical pressing force in an angularly acting force for the forming process.
  • This wedge drive consists of a drive wedge, on which acts a vertical force of a corresponding work press, and a slide wedge, which transmits the force in the horizontal.
  • the driver wedge and the slide wedge run either over a rounded cooperating region or, in another embodiment, over a roller.
  • a wedge press with a prism-shaped wedge guide wherein the contact surfaces are roof-shaped or channel-like and with the roof or gutter extending over the entire pressure-receiving width of the wedge.
  • overhead wedge drives used in the body industry consist of a driver, a slider, and a slider receiver.
  • a driver On the top of the slider recording acts a vertical force that pushes the slider recording down.
  • the driver is firmly anchored in the tool, so that when pressing on the slide holder, the slide anchored in the slide holder is pushed in any direction outside the vertical working direction.
  • the slider depends in his leadership movable in the slide holder.
  • the driver sits rigidly in the lower part and specifies the working direction of the slider.
  • the spring-loaded slider sets on the driver and is pushed by the continuing slide holder over the driver surface in the working direction.
  • a wedge drive which is produced in a continuous industrial production process and should have long service lives.
  • angle brackets are present, which are formed of bronze and have attached in the angle bar sliding elements made of graphite.
  • this wedge drive for deflecting a vertical pressing force with a driver, a slider and a slider receiving equipped, the driver has a prismatic guide and the travel of the slider on the driver is shorter than the travel of the slider on the slider recording and the ratio of the paths to each other is at least 1 to 1.5 and the angle ⁇ between the traverse paths is 50 ° to 70 °.
  • the driver element has a prismatic surface, wherein the flanks of the prismatic surface are formed sloping outwardly.
  • this wedge drive has forced return brackets on two opposite sides in respective grooves of the slider element and the driver element. In this way, in the case of a breakage of the slider element in its starting position retrieving spring element ensures a return of the slider element at spring break and thereby to avoid tearing out of screwed punching elements.
  • the slider element is attached to the slider guide member via the angle brackets and retaining screws and can be moved along the angle strips relative to the slider guide element.
  • the movable slide member In the rear stroke, in which the press tool has exceeded its lower suction point and its two parts move apart again, usually the movable slide member is pushed back by means of a suitably designed resilient element to its original position, after which the process can be restarted.
  • the retraction force required for retrieving the slider element is usually between 2% and 10% of the actual working force and the weight of the slider element.
  • the size of the pressing force here are the dimensions of the pressure-transmitting surfaces referred to as sliding surfaces be determining the respective inclinations of linear guides in the slider element receiving and tilting of the driver element and the interaction of the surfaces and inclinations and the structure of the slider element itself.
  • the pressures to be transmitted are usually between ⁇ 100 kN up to several 10,000 kN.
  • the linear guide in the slide element holder is intended to guide the movable slide element without play and in the process must endure high press forces and realize long service life.
  • a tolerance of the running accuracy of the movable slide element a tolerance of 0.02 mm is specified.
  • such wedge drives or slides consist of a slide assembly, which in turn consists of a driver, a slide part and a slide bed.
  • the slide part is fastened with retaining elements on the slide bed, wherein the slide part between the driver and slide bed is slidably suspended.
  • Corresponding bevels on slide bed and driver are arranged inclined in opposite directions, so that the slide member "pushed out” when moving together slide valve and driver between the two parts. Since, as already stated, in this case act very large forces, a corresponding guide must be provided.
  • the known guides here are the cover strip guide, the guide with guide clips, the guide with guide columns and the dovetail guide ( DE 10 2007 045 703 A1 ).
  • a wedge drive is known, wherein the wedge drive is to have a sliding element holder, a movable slide carriage and a driver and is formed with sliding surfaces between the slide carriage and the driver element, wherein at least one sliding surface a clamping device should be present, the pressing force adjustable during assembly of the Working tool simulated to produce a backlash between the at least one slide carriage and the at least one slider receptacle.
  • a high tolerance accuracy is to be achieved, specifically when the slide upper part mounted in the tool comprises the slider slide and the slider element receiver on the one hand and the driver on the other hand, this is to be achieved by mounting the working tool on the slider, ie when the working tool, eg a punch, is fastened to the slider, the slides are held together with the simulated pressing force.
  • the object of the invention is to provide a method for compensating a production-related offset between a sliding body and the driver.
  • the object is achieved with the features of claim 1.
  • the slider guide between slide body and slide bed rail or web-like design The web may in particular be prism-shaped, in particular dovetail-shaped.
  • the guide play can be adjusted by a wedge surface, for which purpose a separate sliding element is provided.
  • this guide is applied to a known slide assembly consisting of driver, slide part and slide bed, the slide part in the slide bed is hung in a sliding manner. Between the driver and the slide part sliding pairings are arranged.
  • the slide bed has the recess for receiving the spring, wherein on the outside of the spring and on the actual sliding surface, a sliding element is formed.
  • the sliding element is formed with a wedge-shaped surface or bevel.
  • This bevel or wedge shape can here be formed slightly wedge-like on the groove-side surface of an L-shaped sliding element, then the groove is formed with a corresponding surface, in particular a corresponding inclined surface.
  • both sliding elements or only one sliding element may be formed slightly wedge-like and have the slope or wedge-shaped surface.
  • the sliding element By sliding the sliding element along the direction of the slope (usually in the longitudinal direction of the elongated sliding strips), the guiding play between the sliding bed and the slider body is changed, i. especially reduced.
  • the L-shaped sliding element may in this case also be formed from flat individual sliding elements, which are L-shaped with respect to each other.
  • the adjustment of the slide bed to the slider body can be achieved by oppositely moving the slide strips.
  • a known tool slide 1 has a slide bed 2, a slider body 3 and a driver. 4
  • the slide part 3 is arranged hanging on the slide bed 2 in the case shown, wherein the slide part 3 can be lifted by the driver 4.
  • the driver 4 is usually arranged in a first (in the case shown the lower) mold half, while the slide part 3 is arranged on the slide bed 2 on a corresponding second (upper) mold half (not shown).
  • the slide bed 2 is approximately box-shaped and has an elongated rectangular groove 5, wherein in addition to the elongated rectangular groove 5 screw holes 6 for receiving corresponding screws (not shown) are provided.
  • the groove and the adjacent, the groove defining surfaces 7 form a support surface for L-shaped sliding strips 8, which rest on the surfaces 7 and hineinersummen with an L-leg 9 in the groove.
  • the L-shaped sliding strips 8 have mounting holes 10 for screwing mounting screws for placement in the screw holes. 6
  • the L-shaped sliding strips 8 have diverging surfaces 11 pointing towards the center of the groove, with which they delimit a prismatic space between them.
  • the L-shaped slide strips 8 Towards the slider body 3, the L-shaped slide strips 8 have sliding surfaces 12, which are planar and perpendicular to an X-axis 13 shown.
  • the slider body 3 has sliding surfaces or sliding strips 14 which correspond to the surfaces 12 and are designed as sliding partners to the L-shaped slide strips 8.
  • the guide web 15 has in particular a prismatic cross section.
  • the guide web 15 has elongate prismatic surfaces 16, with which it can rest against the surfaces 11 of the L-shaped sliding strips 8.
  • the slider body has further slide strips 17, which are arranged obliquely with respect to the X-axis 13 and with prismatic sliding surfaces 18 of the driver 4 correspond.
  • the strips 17 form, as they are connected to the slider body, lift-off sliding strips, which are brought along when moving together of the upper tool part and the lower tool part in operative connection with the surfaces 18.
  • the roof-like inclined corresponding sliding elements 17, 18 between the slider body and driver form a so-called prism guide.
  • the leadership of the slider body in the slide bed must be adjustable or the slide strips 8 and the guide bar 15 must be adjusted to each other.
  • the mounting holes 10 in the wear strips 8 as elongated holes so that they are along the mounting screws 20 and thus along an adjustment direction 21 slidably.
  • the displacement of the slide strips 8 along the direction 21 does not change any existing gaps or distances between the surfaces of the slide strips 8 and the L-leg 9 and the surfaces 16 of the guide web 15. Based on the longitudinal extent and the direction 21 therefore Contact surfaces 22 of the L-leg 9 of the L-shaped sliding strips 8 on the slide bed 2 obliquely. That means the short L-thighs 9, which protrude into the groove 5, based on the direction 21 are slightly wedge-shaped and change their thickness relative to the longitudinal extent.
  • the wedge shape or slope has, for example, a slope of 1-5 degrees.
  • the contact surfaces 11 on the L-legs 9 of the L-shaped sliding strips 8 are directed to corresponding corresponding surfaces 16 of the guide web 15.
  • the groove side walls 19 are also formed obliquely with corresponding chamfers or wedge-like.
  • a displacement along the direction 21 thus causes the slide strips 8 are moved toward the guide bar 15 or moved away from it. Since this is at the same time an approximation of the wear strips or removal of the wear strips in the transverse direction, i.
  • Direction 23 causes the elongated holes 10 are formed so that a floating bearing is also made possible in the direction 23 around the screws 20 around.
  • a displacement along the direction 21 thus causes, due to the corresponding inclined surfaces 19/22, the distance between the L-legs 9 and the surfaces 16 is reduced or eliminated.
  • both both slide strips 8 and only one slide bar 8 can be moved.
  • this can be used to set a production-related offset between the slide bed with slide part in the slide upper part and the driver in the lower part ( Fig. 6 to 8 ).
  • the slide bed is mounted with slide part with clearance between the slide strips 8 and the guide bar 15 on the tool.
  • the gap dimensions between the corresponding surfaces 11 of the L-legs 9 and 16 of the guide web 15 each have a gap with a gap, which depends on the inclination of the slope, the manufacturing tolerances and the position of the slide parts to each other.
  • Such a fixing device 26 is exemplified in different embodiments FIGS. 13 to 16 shown.
  • FIGS. 15, 16 show by way of example the guide bar 8, which is designed in length so that one of the slots 20 is exposed with the fixing screw 27 at the rear end of the slider in the contracted state, and the position of the slide bar 8 can be fixed by the screw.
  • FIGS. 13, 14 show a further solution for the arrangement of the fixing device 26.
  • a screw 29 inserted in a counterbore 28 of the slide strip engages through a slot 30 in the slide bed 2, and a counter piece 31 arranged underneath.
  • the counter piece 31 can be threaded over one 32 connected adjusting screw 33 are displaced in the position, whereby the position of the slide bar 8 adapts.
  • By tightening the screw 29 in the slide bar 8 this clamps on the counter piece 31 in the slide bed 2, which leads to the backup of the set guide clearance.
  • Other fasteners of the slide bar are accessible after moving apart of the slider.
  • the invention relates to a method for compensating a production-related offset in a tool slide, in particular a tool slide, wherein the tool slide comprises a slide bed 2, a slider body 3 and a driver 4, wherein between the slider body 3 and the driver. 4 a self-centering guide is formed which, when the slider body 2 is placed on the driver 4, centers the slider body 3 on the driver 4 transversely to an x-axis 13 and the slider body 3 is mounted floatingly on the slider bed 2 via a flat guide transverse to the x-axis that the production-related offset when centering the slider body 3 on the driver 4 is compensated in the transverse direction, wherein after balancing the production-related offset sliding elements 8 between the slide bed 2 and slider body 3 are moved and adjusted so that the sliding surfaces form-fitting manner in a groove 5 in accordance abut the x-axis 13 projecting web 15 and thus the floating storage transverse to the x-axis 13 is repealed.
EP17161167.6A 2014-03-06 2015-03-05 Verfahren zum ausgleich eines fertigungsbedingten versatzes bei einem werkzeugschieber Active EP3238848B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014102992 2014-03-06
EP15709659.5A EP3113891B1 (de) 2014-03-06 2015-03-05 Werkzeugschieber
PCT/EP2015/054659 WO2015132353A2 (de) 2014-03-06 2015-03-05 Werkzeugschieber

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15709659.5A Division-Into EP3113891B1 (de) 2014-03-06 2015-03-05 Werkzeugschieber
EP15709659.5A Division EP3113891B1 (de) 2014-03-06 2015-03-05 Werkzeugschieber

Publications (2)

Publication Number Publication Date
EP3238848A1 EP3238848A1 (de) 2017-11-01
EP3238848B1 true EP3238848B1 (de) 2019-02-06

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Application Number Title Priority Date Filing Date
EP15709659.5A Active EP3113891B1 (de) 2014-03-06 2015-03-05 Werkzeugschieber
EP17161167.6A Active EP3238848B1 (de) 2014-03-06 2015-03-05 Verfahren zum ausgleich eines fertigungsbedingten versatzes bei einem werkzeugschieber

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EP15709659.5A Active EP3113891B1 (de) 2014-03-06 2015-03-05 Werkzeugschieber

Country Status (8)

Country Link
US (1) US20170014888A1 (es)
EP (2) EP3113891B1 (es)
JP (1) JP2017507035A (es)
KR (1) KR20160131062A (es)
CN (1) CN106414046A (es)
DE (1) DE112015000004B4 (es)
ES (1) ES2684107T3 (es)
WO (1) WO2015132353A2 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015106966U1 (de) 2015-12-21 2016-01-28 Harald Weigelt Keiltrieb
DE202017100989U1 (de) 2017-02-22 2017-04-21 Fibro Gmbh Keiltrieb mit optimierter Führung
DE102017130873B4 (de) * 2017-12-21 2020-04-23 Fibro Gmbh Vorrichtung und Verfahren zur Überwachung eines Keiltriebwerkzeugs
DE202018004995U1 (de) 2018-10-17 2018-11-29 PROMESS Gesellschaft für Montage- und Prüfsysteme mbH Antrieb für ein Werkzeug
DE102022117325B3 (de) * 2022-07-12 2023-11-09 F I B R O Gmbh Schieberanordnung

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DE2329324B2 (de) 1973-06-08 1975-11-27 Langenstein & Schemann Ag, 8630 Coburg Keilpresse mit einer Einrichtung zur Verhinderung unerwünschter Bewegungen des Keiles
DE2439217A1 (de) 1974-08-16 1976-03-04 Langenstein & Schemann Ag Keipresse mit einer keilfuehrung
DE2640318A1 (de) 1976-08-09 1978-03-16 Weingarten Ag Maschf Keiltrieb zur umleitung einer vertikalen presskraft in eine fuer den umformvorgang hierzu winklig wirkende kraft
ES2069654T3 (es) * 1990-11-09 1995-05-16 Umix Co Ltd Matriz con leva deslizante.
DE19753549C2 (de) 1997-12-03 2000-02-17 Harald Weigelt Keiltrieb
JP3757635B2 (ja) * 1998-08-26 2006-03-22 オイレス工業株式会社 カム装置
ATE337165T1 (de) * 2000-10-13 2006-09-15 Harald Weigelt Keiltrieb
US6990844B1 (en) * 2004-07-27 2006-01-31 Anchor Lamina America, Inc. Narrow aerial and die-mount cams
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DE102005029140B4 (de) * 2005-06-23 2008-04-03 Elke Weigelt Werkzeugbefestigungseinrichtung für einen Keiltrieb
US8430385B2 (en) * 2007-09-24 2013-04-30 Harald Weigelt Wedge drive with slider receiving means
DE102007045703A1 (de) 2007-09-24 2009-04-09 Harald Weigelt Keiltrieb mit Schieberaufnahme
DE102008061420B9 (de) * 2008-12-10 2011-02-10 voestalpine Gießerei Linz GmbH Keiltrieb
JP2011140048A (ja) * 2010-01-08 2011-07-21 Sankyo Oilless Industry Inc カム装置
KR101139272B1 (ko) * 2011-02-16 2012-04-26 주식회사 루보 캠슬라이드의 편심구동방지수단이 구비된 에어리얼 캠 유니트
DE202011108083U1 (de) * 2011-11-21 2013-02-26 Bernd Klug Vorrichtung mit zumindest einer Einrichtung zum Einstellen eines Führungsspiels
DE102012014546A1 (de) * 2012-07-21 2014-01-23 Strack Norma Gmbh & Co. Kg Keiltrieb

Also Published As

Publication number Publication date
EP3113891A2 (de) 2017-01-11
CN106414046A (zh) 2017-02-15
WO2015132353A2 (de) 2015-09-11
DE112015000004B4 (de) 2016-03-10
EP3113891B1 (de) 2018-05-16
KR20160131062A (ko) 2016-11-15
JP2017507035A (ja) 2017-03-16
EP3238848A1 (de) 2017-11-01
WO2015132353A3 (de) 2015-12-17
ES2684107T3 (es) 2018-10-01
US20170014888A1 (en) 2017-01-19
DE112015000004A5 (de) 2015-11-19

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