EP0491451B1 - Magazinartiger, stapelbarer Halterost zur lagedefinierten Aufnahme von Wellen - Google Patents

Magazinartiger, stapelbarer Halterost zur lagedefinierten Aufnahme von Wellen Download PDF

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Publication number
EP0491451B1
EP0491451B1 EP19910250336 EP91250336A EP0491451B1 EP 0491451 B1 EP0491451 B1 EP 0491451B1 EP 19910250336 EP19910250336 EP 19910250336 EP 91250336 A EP91250336 A EP 91250336A EP 0491451 B1 EP0491451 B1 EP 0491451B1
Authority
EP
European Patent Office
Prior art keywords
indexing means
depressions
support
support grid
grids
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
EP19910250336
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0491451A1 (de
Inventor
Manfred Paul
Werner Merten
Martin Gotthardt
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.)
Friedr Lohmann Werk fur Spezial- und Edelstahle Firma GmbH
Original Assignee
Friedr Lohmann Werk fur Spezial- und Edelstahle Firma 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 Friedr Lohmann Werk fur Spezial- und Edelstahle Firma GmbH filed Critical Friedr Lohmann Werk fur Spezial- und Edelstahle Firma GmbH
Publication of EP0491451A1 publication Critical patent/EP0491451A1/de
Application granted granted Critical
Publication of EP0491451B1 publication Critical patent/EP0491451B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 invention relates to a magazine-like, stackable holding grate for the position-defined reception of similar slim workpieces - waves - in heat treatment furnaces, the preamble of claim 1, as it emerges from the generic document US Pat. No. 4,687,185 as known.
  • the US-PS 46 87 185 relates to a holding grate for receiving several camshafts.
  • the holding grate is designed like a frame and, on a plurality of transverse struts or side walls which are assigned to one another in parallel, has a plurality of receiving recesses which are in alignment and mutually parallel and into which the camshafts are inserted.
  • these cross struts or side walls have a lower height except for the corner areas, so that several of these holding grids, if they are equipped with the camshafts, can be placed one above the other.
  • a stack thus formed is then passed through a heat treatment furnace to harden the camshafts and then quenched together with the camshafts.
  • the object of the invention is to further develop an underlying holding grate in such a way that waves delivered horizontally in it can be converted almost vertically with little, but gentle, effort and then be heat-treated.
  • the object is achieved with a holding grate with the characterizing features of claim 1.
  • the shafts are picked up in the stacked holding grids made of heat-resistant material by a special lifting device, then turned into an almost vertical position, which is at an acute angle to a vertical, and hung in the holder of a holder.
  • the holding grids originally fixed by the stack indexing slide into one another over the inclines of the stack indexings, so that they now hold on to their inclined indexing, the lower side walls of the holding grate forming an almost straight surface. This, however, enables a secure and stable stand of the fallen stack of the holding grates with the shafts arranged in them and the hardening process of the shafts, i.e.
  • the heat treatment with subsequent quenching can be carried out in a favorable manner with the longitudinal axes of the shafts aligned almost vertically.
  • the holding grates can be picked up again with the lifting device and transferred to the horizontal, the inclined indexing slipping into one another and the holding grids locking together again via the stack indexing.
  • a magazine-like, stackable holding grate is shown in supervision.
  • the crate-like and honeycomb-shaped holding grate is delimited on its outer circumference by two longitudinal walls 8 and two transverse walls 9, on which hand grips 3 are arranged.
  • the holding grate has intermediate walls 10 arranged parallel to the transverse walls 9, as well as support webs 11 arranged transversely to these.
  • This honeycomb-like design of the bottom area of the holding grate has the advantage that the grate is relatively light and consumes little energy when heating up inside the heating furnace.
  • Troughs 1 are arranged on the upper side of the support webs 11, which are aligned in a longitudinal axis 5 of the trough lying parallel to the intermediate walls 10 and by which a shaft which is inserted in a defined manner is held.
  • the top-side stack indexings 2 are arranged in the form of lugs, which pass over bevels 12 into the respective upper side of the intermediate wall 10 or transverse wall 9, with the respective upper side one form an included angle of maximum 45 °.
  • This stack indexing 2 whose corresponding equivalent - underside stack indexing 2 '- is arranged on the bottom side of these walls in the form of a correspondingly counter-profiled recess, holding grids stacked one above the other are fixed in this stacked horizontal relative position.
  • the waves are accommodated parallel to one another in the troughs 1 of the holding grate.
  • the bevels 12 of the lugs enable the holding grids to be displaced relative to one another when force is applied in the direction of the longitudinal axis 5 of the trough.
  • the holding grate also has separate inclination indexings in the form of handles 3, which are each arranged on a transverse wall 9.
  • these grab handles comprise undercuts 7 arranged on the outside on the transverse walls 9, play in the form of a defined displacement dimension 4 being provided in the direction of the longitudinal axis 5 of the trough.
  • This displacement dimension 4 is between 10 and 40%, in this case approximately 16% of the height of the holding grate, which enables a staggering angle ⁇ of between 6 and 24 °, in this case approximately 15 °.
  • the horizontally stacked holding grids can be dropped in packets and placed on a piercing pallet 15 which is provided with a support bracket 13, the holding lug 14 of which projects into one of the lower stack indexings 2 'and thus holds the fallen holding grids with their shafts arranged therein.
  • the stack indexings 2, 2 'and the holding handles 3 are arranged mirror-symmetrically to an axis of symmetry 6, which corresponds to the center line of the holding grate, which runs between the two holding handles 3.
  • the longitudinal walls 8, which lie transversely to the longitudinal axis 5 of the trough, are inclined outwards by the staggering angle ⁇ , so that the longitudinal walls 8 are aligned with one another when the holding grids are displaced by the displacement dimension 4, so that a package of holding grids which have been set upside down are erected over the entire area on the piercing pallet 15 can.
  • the mutual fixation of the holding grids in the direction transverse to the troughs 1 is carried out exclusively by the handles 3, the two opposite handles 3 - inclination indexations - interacting positively in pairs.
  • the stack indexings 2, 2 'can thereby be made simpler.
  • each undercut 7 is chosen so large that it corresponds to the displacement dimension 4, with which the handles 3 get caught in the undercuts 7.
  • the undercuts 7 have inclined surfaces which, with an imaginary straight line running perpendicular to the base surface, have an included angle which corresponds to the staggering angle ⁇ . If the shafts are stored in one or more of these holding grids parallel to the intermediate walls 10 in the troughs 1 of the support webs 11, they can remain in the holding grids during the entire heat treatment. Reloading the shafts from horizontal storage magazines into baskets can thus be avoided. Furthermore, due to the standing or overturned arrangement of the shafts in the heat treatment furnace, there are fewer distortions than with a horizontal heat treatment.
  • the handling of the holding grids is further simplified in that not only the entire floor through the partitions 10 and the support webs 11 are honeycomb-shaped, but also in that at least the longitudinal walls 8 are provided with several openings for minimizing weight, this also being possible on the transverse walls 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Charging Or Discharging (AREA)
EP19910250336 1990-12-17 1991-12-16 Magazinartiger, stapelbarer Halterost zur lagedefinierten Aufnahme von Wellen Expired - Lifetime EP0491451B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904040406 DE4040406A1 (de) 1990-12-17 1990-12-17 Magazinartiger, stapelbarer halterost zur lagedefinierten aufnahme von wellen
DE4040406 1990-12-17

Publications (2)

Publication Number Publication Date
EP0491451A1 EP0491451A1 (de) 1992-06-24
EP0491451B1 true EP0491451B1 (de) 1995-03-08

Family

ID=6420601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910250336 Expired - Lifetime EP0491451B1 (de) 1990-12-17 1991-12-16 Magazinartiger, stapelbarer Halterost zur lagedefinierten Aufnahme von Wellen

Country Status (2)

Country Link
EP (1) EP0491451B1 (enrdf_load_stackoverflow)
DE (1) DE4040406A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29608569U1 (de) * 1996-05-13 1996-08-14 Karl Heess GmbH & Co Maschinenbau, 68623 Lampertheim Vorrichtung zum Aufnehmen und Umsetzen von Wärmebehandlungsschritten zu unterwerfenden Werkstücken
CN1322148C (zh) * 2004-12-16 2007-06-20 上海汽车股份有限公司 高压气体淬火料架

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904722C2 (de) * 1979-02-08 1982-08-05 Rudolf 5000 Köln Klefisch Glühkorb
DE3444507A1 (de) * 1984-12-06 1986-06-12 Rudolf 5000 Köln Klefisch Transportkorb fuer rollenherdofen
JPS644814Y2 (enrdf_load_stackoverflow) * 1985-06-14 1989-02-07
EP0212598A1 (de) * 1985-08-27 1987-03-04 Steuler-Industriewerke GmbH Stapelbares Gestell zur Aufnahme von keramischen Formlingen im Brennofen
DE8616145U1 (de) * 1986-06-14 1986-07-31 Klefisch, Rudolf, 5000 Köln Glühkorb

Also Published As

Publication number Publication date
DE4040406C2 (enrdf_load_stackoverflow) 1993-06-09
DE4040406A1 (de) 1992-07-02
EP0491451A1 (de) 1992-06-24

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