EP2906891A1 - Porte-pièces - Google Patents

Porte-pièces

Info

Publication number
EP2906891A1
EP2906891A1 EP13779775.9A EP13779775A EP2906891A1 EP 2906891 A1 EP2906891 A1 EP 2906891A1 EP 13779775 A EP13779775 A EP 13779775A EP 2906891 A1 EP2906891 A1 EP 2906891A1
Authority
EP
European Patent Office
Prior art keywords
component elements
workpiece carrier
cfc
latching
cfc component
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.)
Granted
Application number
EP13779775.9A
Other languages
German (de)
English (en)
Other versions
EP2906891B1 (fr
Inventor
Frank Eiselt
Thomas Steiner
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.)
SGL Carbon SE
Original Assignee
SGL Carbon SE
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 SGL Carbon SE filed Critical SGL Carbon SE
Priority to SI201330527A priority Critical patent/SI2906891T1/sl
Priority to PL13779775T priority patent/PL2906891T3/pl
Publication of EP2906891A1 publication Critical patent/EP2906891A1/fr
Application granted granted Critical
Publication of EP2906891B1 publication Critical patent/EP2906891B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens or the like for the charge within the furnace
    • F27D5/0006—Composite supporting structures
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers

Definitions

  • the present invention relates to a workpiece carrier comprising at least two component elements, which are each composed of a carbon fiber reinforced carbon (CFC).
  • CFC carbon fiber reinforced carbon
  • CFC workpiece carriers are used to support or hold workpieces in high temperature environments.
  • charging racks are used as a carrier, wherein the heat treatment to be subjected to workpieces are placed on a support surface of the charging frame in the simplest case.
  • workpiece carriers made of CFC are characterized in particular by increased temperature resistance and better dimensional stability.
  • the assembly of a workpiece carrier of a plurality of component elements is advantageous in terms of manufacturing costs and flexibility. In particular, this makes it possible to build complex frames, which are tuned to the respective workpiece type and quantity.
  • the individual component elements can be plugged together, for example by means of frictional connection elements.
  • a workpiece carrier for hardened material, which is composed of four frame-like assembled CFC strips is, for example, in
  • At least two of the at least two CFC component elements are locked together.
  • a latch engage at least two corresponding locking teeth form fit into each other and hold the two CFC component elements in a defined detent position, but under force overcoming the positive connection is possible in at least one direction. That is to say, when plugging together and optionally when the component elements are being pulled apart, the mentioned toothed elements can slide past one another.
  • a snap connection or click connection reaching the detent position is often audible and / or tactile perceptible (“clicking" or "snapping").
  • the two CFC components are therefore not only plugged together and thereby frictionally connected, but there is also a positive connection due to the latching, which increases the stability of the overall component and prevents unwanted loosening or loosening of the individual components.
  • a complex bonding is not required here. Due to the increase in the load-bearing capacity of the connection caused by the positive connection, material can be saved in the design of the component elements, as a result of which the production costs decrease.
  • Fixed form-fitting connections in the form of undercuts or stakes often require complicated assembly of the component elements from different directions and in an exactly predetermined order. In contrast, a locking two component elements is particularly fast and easy. At a locking connection only comparatively low seasonal alternmaschinen are also to make.
  • kits for workpiece carriers by means of which end customers can produce individual workpiece carriers as a function of the respective application by simply clicking in the individual parts.
  • the latching of the at least two CFC component elements can preferably be achieved by overcoming a latching resistor.
  • the workpiece carrier can then be easily disassembled if necessary.
  • the force to be exerted on one of the two CFC component elements to overcome the detent resistance is at least 10 N.
  • An adapted detent resistance on the one hand ensures sufficiently high security against unintentional release of the detent connection and on the other hand facilitates easy assembly and disassembly of the workpiece carrier , If subsequent dismantling of the workpiece carrier is not considered, the detent resistance may also be so be interpreted large that a non-destructive release of the locking is practically impossible.
  • the workpiece carrier can also comprise at least three CFC component elements, wherein each of the at least three CFC component elements is latched with at least one further of the at least three CFC component elements.
  • a workpiece carrier may comprise two CFC component elements configured as side members, which are arranged parallel to one another and overlapped by at least one CFC component element designed as a cross member, the cross member being latched at each end to one of the side members.
  • a rust- or lattice-like workpiece carrier is possible, which is suitable for supporting a plurality of different workpieces.
  • a bearing surface for a workpiece can be formed on at least one of the at least two CFC component elements and, preferably, on each of the at least two CFC component elements.
  • special fixing elements such as recesses or stirrups, to be provided on the CFC component elements that overlap the workpiece to be held.
  • a locking projection may be provided on at least one of the at least two CFC component elements latched to one another, which latching projection projects into a CFC component element latched to another of the at least two mutually latched components. seen locking recess engages.
  • the latching protrusion may be any area of material that protrudes from a base surface of the CFC component element, such as a flat wall. Depending on the application specification, such a latching projection can be shaped like a tooth, hump-like or nose-like.
  • the locking projection is designed ramp-like, to provide a casserole oblique to facilitate the locking.
  • the latching projection could be designed as a separate component element. However, it is preferred if the latching projection is formed directly on the associated CFC component element.
  • the latching projection by a distance between 0.05 mm and 1, 5 mm, preferably between 0.1 mm and 0.7 mm, and particularly preferably between 0.2 mm and 0.4 mm relative to the base surface of associated CFC component element protrudes.
  • Such distances have proved to be particularly favorable in that on the one hand a secure locking connection is ensured and on the other hand, a slight engagement or clicking one CFC component element in the other CFC component element is possible.
  • both a latching projection and a latching receptacle are provided on each of the at least two interconnected CFC component elements, the latching projections and the latching receptacles of two mutually latched CFC component elements being mutually engaged.
  • a further aspect of the invention provides that the at least two CFC component parts can be plugged together for latching along a plug-in direction, the latching projection and the latching receptacle of each of the at least two CFC component elements being arranged one behind the other with respect to the plug-in direction.
  • the latching projection of one CFC component element thus automatically enters the latching receptacle of the other CFC component element and vice versa, so that a particularly simple latching is possible.
  • At least one of the at least two interlocked CFC component elements may have a groove for receiving a male portion of the respective other CFC component element, wherein the latching projection projects from a side wall of the groove.
  • the insertion portion may be any portion of the respective CFC component member whose width is matched to the width of the groove.
  • the groove then serves as a guide for the CFC component element to be inserted and on the other hand provides the locking projection serving for latching.
  • the at least two mutually locked CFC component elements are plate-like and each have at least one groove, wherein the grooves mutually engage.
  • Such CFC component elements are relatively easy to produce and are particularly suitable for the construction of grid-like charging racks.
  • the groove may in particular have a rectangular cross-section. This enables a particularly simple production.
  • a further embodiment of the invention provides that at least one of the at least two interconnected CFC component elements, and preferably each of the at least two interconnected CFC component elements, has at least three spaced-apart grooves for receiving an insertion portion of another CFC component element.
  • the flexibility in the construction of an application-related workpiece carrier can be further increased.
  • two parallel and mutually spaced grooves are formed, between which extends the, in particular plateau- or hump-like, locking projection. Such a configuration of the latching projection has been found to be advantageous in terms of easy latching.
  • the grooves may have a rounded cross section, wherein the radius of curvature of the rounding is at least 0.1 mm and preferably at least 0.3 mm. Furthermore, in at least one side wall of the groove may be formed a ramp-like locking projection and an adjacent thereto groove.
  • the groove facilitates the snapping or clicking the locking projection into the associated locking receptacle.
  • the at least two CFC component elements are each composed of a carbon fiber-reinforced carbon which comprises carbonized and / or graphitized polyacrylonitrile fibers. With such fibers particularly good results were achieved.
  • the at least two CFC component elements are each composed of a carbon reinforced with carbon fibers, carbon fibers and / or drawn fibers.
  • the at least two CFC component elements are each composed of a carbon fiber-reinforced carbon which comprises carbon fibers with an average diameter of between 5 ⁇ m and 10 ⁇ m.
  • a carbon fiber-reinforced carbon which comprises carbon fibers with an average diameter of between 5 ⁇ m and 10 ⁇ m.
  • the at least two CFC component elements are each composed of a carbon fiber-reinforced carbon which is at least
  • the at least two CFC component elements have a temperature resistance of at least 1, 500 ° C. and preferably of at least 2,500 ° C.
  • the workpiece carrier can be composed exclusively of, preferably similar, CFC component elements. This allows a particularly cost-effective production.
  • the workpiece support has a size (BxLxH) of at least 50 mm x 50 mm ⁇ 10 mm, preferably ⁇ of at least 100 mm 100 mm ⁇ 10 mm and more preferably ⁇ of at least 300 mm 300 mm ⁇ 20 mm, such as of Figure 1.
  • Workpiece carrier of this Size are commonly used as charging racks when curing or sintering components.
  • Another object of the present invention is the use of a previously described workpiece carrier as Chargiergestell in a Hochtempera- environment.
  • FIG. 1 is a plan view of a CFC component element for a workpiece carrier according to a first embodiment of the invention.
  • FIG. 2 is an enlarged partial view of the workpiece carrier according to FIG. 1.
  • FIG. 1 is a plan view of a CFC component element for a workpiece carrier according to a first embodiment of the invention.
  • FIG. 2 is an enlarged partial view of the workpiece carrier according to FIG. 1.
  • FIG. 3 is a partial view of a CFC component member for a workpiece carrier according to a second embodiment of the invention.
  • 4 is a partial view of a CFC component member for a workpiece carrier according to a third embodiment of the invention.
  • the plate-shaped component element 1 1 shown in FIG. 1 is made entirely of a carbon fiber-reinforced carbon (CFC) and serves to construct a workpiece carrier such as a charging frame.
  • the carbon fiber-reinforced carbon comprises continuous fibers of carbonized and / or graphitized polyacrylonitrile, which are embedded in a proportion of at least 80% by volume in a matrix of carbon. Preferably, the fibers have an average diameter of about 7 ⁇ .
  • the CFC component element 1 1 is designed in the form of an elongated strip and has a longitudinal axis L. Four grooves 13 with a rectangular cross-section are formed along the longitudinal axis L spaced apart in the CFC component element 1 1. The width B of each groove corresponds to the not shown in FIG.
  • each groove 13 has two mutually opposite side walls 17, wherein in each of the side walls 17 two mutually parallel and transverse to the longitudinal axis L spaced grooves 19 are formed. Between the two grooves 19 of a side wall 17 is in each case a slightly rounded Rastbuckel 20, which protrudes relative to the surface of the side wall 17 by about 0.35 mm.
  • two CFC component elements 1 1 designed according to FIG. 1 can each be latched to one another, as will be explained in more detail below.
  • the two to be joined CFC component elements 1 1 are first arranged in a basically known manner such that their longitudinal axes L perpendicular to each other and an upper side groove 13 of a CFC component element 1 1 a bottom groove 13 of the other CFC component element 1 1 opposite ,
  • the two CFC component elements 11 are then brought together along an insertion direction E pointing transversely to the two longitudinal axes L, wherein the grooves 13 mutually intermesh.
  • the locking resistance can be adjusted relatively accurately to an application-related default value.
  • three or more CFC component elements 1 1 it is possible in the manner described to build up frame or lattice-like workpiece carriers in which the narrow sides 23 of the CFC component elements 1 1 form respective bearing surfaces 25 for workpieces.
  • Such workpiece carriers are particularly suitable as charging racks in hardening or sintering furnaces.
  • Assembling a workpiece carrier by locking the CFC component elements 1 1 is simple and requires no special knowledge. It can therefore also be carried out by a respective end customer, while the manufacturer of the workpiece carrier provides only a set of CFC component elements 1 1 for individual mating as a kit.
  • a particular advantage of the illustrated system is that there are no undercuts, which require the consideration of different Ein-directions and the maintenance of a particular order in the assembly during assembly. Neither gluing nor separate fastening elements such as pins or pins are necessary, since the stability of the CFC component part assembly is ensured by the locking.
  • FIG. 3 shows an alternative embodiment of a CFC component part 1 1 according to the invention, wherein, instead of a latching boss, a latching nose 27 having a ramp portion 29 and a shoulder 31 is provided here.
  • the approach shoulder 31 is followed by a single groove 19.
  • the ramp portion 29 of the locking lug 27 forms a casserole oblique for the insertion portion 21 of the other CFC component element 1 1 and thus facilitates the mating of the two CFC component elements 1 first
  • the shoulder 31 provides for this in comparison to the embodiment according to FIGS. 1 and 2 increased detent resistance.
  • FIG. 1 For latching into the recess 15, a latching lug 27 is provided here similar to the embodiment according to FIG. 3, wherein, however, no groove is formed in the side wall 17 of the groove 13.
  • the shoulder 31 runs here rather in a rounding 33.
  • the distance A, by which the latching nose 27 protrudes relative to the side wall 17, is highlighted by dashed lines.
  • the locking not only allows a higher stability, but also a simplified assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Jigs For Machine Tools (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Connection Of Plates (AREA)
  • Powder Metallurgy (AREA)

Abstract

La présente invention concerne un porte-pièces comprenant au moins deux éléments constitutifs qui sont respectivement composés de carbone renforcé par des fibres de carbone (CFC). Au moins deux desdits éléments constitutifs en CFC sont encliquetés l'un avec l'autre.
EP13779775.9A 2012-10-10 2013-10-09 Porte-pièces Not-in-force EP2906891B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201330527A SI2906891T1 (sl) 2012-10-10 2013-10-09 Nosilec za obdelovance
PL13779775T PL2906891T3 (pl) 2012-10-10 2013-10-09 Wspornik dla przedmiotu obrabianego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012218491.0A DE102012218491A1 (de) 2012-10-10 2012-10-10 Werkstückträger
PCT/EP2013/071090 WO2014057002A1 (fr) 2012-10-10 2013-10-09 Porte-pièces

Publications (2)

Publication Number Publication Date
EP2906891A1 true EP2906891A1 (fr) 2015-08-19
EP2906891B1 EP2906891B1 (fr) 2016-12-14

Family

ID=49448120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13779775.9A Not-in-force EP2906891B1 (fr) 2012-10-10 2013-10-09 Porte-pièces

Country Status (11)

Country Link
US (1) US20150211799A1 (fr)
EP (1) EP2906891B1 (fr)
DE (1) DE102012218491A1 (fr)
DK (1) DK2906891T3 (fr)
ES (1) ES2617736T3 (fr)
HU (1) HUE033202T2 (fr)
LT (1) LT2906891T (fr)
PL (1) PL2906891T3 (fr)
PT (1) PT2906891T (fr)
SI (1) SI2906891T1 (fr)
WO (1) WO2014057002A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170321964A1 (en) * 2016-05-03 2017-11-09 Saint-Gobain Ceramics & Plastics, Inc. High temperature ceramic support rack
DE102018101994B4 (de) * 2018-01-30 2025-06-05 Ald Vacuum Technologies Gmbh Vorrichtung zur Abstützung metallischer Werkstücke und Verfahren zur thermochemischen Behandlung
DE102019203594A1 (de) * 2019-03-15 2020-09-17 Sgl Carbon Se Chargiergestell

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US652126A (en) * 1899-03-14 1900-06-19 Elmer R Lionberger Egg-case filler.
US1443283A (en) * 1920-04-17 1923-01-23 Russell Company Box cell case
DE8119990U1 (de) * 1981-07-09 1981-12-24 Friedrich, Uwe W., 4444 Bad Bentheim Zusammenklappbarer Transportkasten
DE9404102U1 (de) * 1994-03-11 1995-07-13 Pies, Gerrit, 42699 Solingen Verbindung eines Profilstabs mit einer daran zu befestigenden Profilleiste
DE29512569U1 (de) 1995-08-04 1995-11-30 Schunk Kohlenstofftechnik GmbH, 35452 Heuchelheim Träger für Härtegut
DE19651408C2 (de) * 1996-12-11 2001-04-19 Fraunhofer Ges Forschung Werkstückträger zum Wärmebehandeln von Werkstücken und Verwendung des Werkstückträgers
JP2000169910A (ja) * 1998-12-02 2000-06-20 Akio Shinba 熱処理用治具
CA2409061A1 (fr) * 2002-10-21 2004-04-21 Corrugated Partitions Inc. Separateurs intercalaires en carton
US7740474B2 (en) * 2003-06-13 2010-06-22 Schunk Kohlenstofftechnik Gmbh Support for structural components and method for producing the same
DE20319600U1 (de) * 2003-12-17 2004-03-18 Sgl Carbon Ag Werkstückträger aus faserverstärkter Keramik zum Wärmebehandeln von Werkstücken
DE102004017566A1 (de) * 2004-04-07 2005-11-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Werkstückträger zum Wärmebehandeln von Werkstücken
DE102009037293B4 (de) * 2009-08-14 2013-05-23 Gtd Graphit Technologie Gmbh Verbesserter Werkstückträger
DE202010015436U1 (de) * 2010-11-16 2011-01-27 Sgl Carbon Se Verriegelungselement, CFC-Bauteil und Halterungseinrichtung

Non-Patent Citations (1)

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See references of WO2014057002A1 *

Also Published As

Publication number Publication date
DK2906891T3 (en) 2017-03-13
SI2906891T1 (sl) 2017-06-30
EP2906891B1 (fr) 2016-12-14
WO2014057002A1 (fr) 2014-04-17
US20150211799A1 (en) 2015-07-30
HUE033202T2 (en) 2017-11-28
PL2906891T3 (pl) 2017-08-31
PT2906891T (pt) 2017-03-10
DE102012218491A1 (de) 2014-04-10
ES2617736T3 (es) 2017-06-19
LT2906891T (lt) 2017-05-25

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