EP3038770B1 - Procédé de fabrication de surfaces de codage à partir d'une pièce brute - Google Patents

Procédé de fabrication de surfaces de codage à partir d'une pièce brute Download PDF

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Publication number
EP3038770B1
EP3038770B1 EP14744346.9A EP14744346A EP3038770B1 EP 3038770 B1 EP3038770 B1 EP 3038770B1 EP 14744346 A EP14744346 A EP 14744346A EP 3038770 B1 EP3038770 B1 EP 3038770B1
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EP
European Patent Office
Prior art keywords
coding
blank
key
casing
closing cylinder
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
EP14744346.9A
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German (de)
English (en)
Other versions
EP3038770A1 (fr
Inventor
André Haake
Oliver Haake
Patrick Haake
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns
    • B22C7/023—Patterns made from expanded plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/043—Removing the consumable pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/18—Finishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0004—Lock assembling or manufacturing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • a generic method is from the WO 2012/062305 A2 known.
  • a separating cut By means of a separating cut, a blank is cut into two parts.
  • the course of the separating cut with several changes of direction creates two complementary and thus coded surfaces, so that the two parts produced from the blank are referred to as coding parts in the present proposal.
  • a method of molding is known in which first a blank is produced, which is referred to as a "model". On the model, a mass is applied, with the help of which then a first mold is produced, the cavity corresponds to the model. In this first mold molten wax is poured, which solidifies to a wax model of the model. After solidification, the wax model is coated with ceramic material and then melted out by heating, so that a second, this time ceramic, casting mold remains. In this second mold is a liquid Cast material filled. After it has solidified, we destroyed the ceramic mold, so that now created from the cast material model of the model is created.
  • the invention has for its object to further develop a generic method to the effect that it allows the production of key and closing stamp of the locking system in a particularly economical manner.
  • the invention proposes, surprisingly, not to use a blank made of the material, for example of metal, which is to form the entire key or closing punch later, or which is to form the coding surface of the key or closing punch as a so-called coding disk. Rather, a cumbersome at first glance way in the production of the key and the closing punch is made: From the blank by means of the separating cut two coding created, which are used as positive models to create a mold, as for example from the field of precision casting as so mentioned lost wax is known.
  • the material from which the blank and thus also the two coding parts can therefore also be referred to as a preliminary material, in contrast to the material from which the key or closing punch or at least the coding disc is made later, and which designates as final material can be.
  • the two coding parts are encased in a material which is dimensionally stable and which has a higher melting point than the respective coding part made of the preliminary material.
  • the material of the sheath is also chosen so that it also has a higher melting point than the final material which is to form the coding surface on the finished key or closing punch.
  • the sheathing is deliberately created with one or more false or cutouts on which the sheath does not cover the coding part.
  • the coding part is then heated to a temperature which is above its melting temperature at which, however, the shell is still dimensionally stable.
  • the heated preliminary material of the coding part can now be removed from the casing, so that now a mold cavity is created, which can be filled with the final material. Possibly. For example, a second or more additional crops may aid in complete emptying of the mold cavity.
  • the preliminary material can flow out of the casing through the cut-off in the liquid state or, if the heating of the coding part leads to its gasification, escape from the casing in gaseous form through the cut-off.
  • the sheath is still dimensionally stable, but now hollow inside. It therefore now provides a mold cavity which is filled with the final material, ie with the material which is to form the coding surface on the finished key or closing punch.
  • the cutout serves as a gate for the final material and possibly one or more additional crops can serve as vents of the mold cavity to ensure its complete filling.
  • the final material may be a metal.
  • two components in the form of castings are produced, which correspond to the two coding parts previously produced from the blank, wherein the two coding parts form lost models for the production of the two cast components.
  • Carrying out the separation cut on the blank and the generation of the two coding surfaces This is done in an upstream process section and with a preliminary, easy-to-work material before the used in the locking system components are generated from the final material.
  • the entire key or the entire closing punch may be cast from this material, which is to form the coding surface on the finished key or closing punch, so that the coding part can accordingly also have the shape of the later key or closing punch including its coding surface.
  • it may be provided to use for the production of a plurality of keys and closing stamps respectively standardized body of keys and standardized body of closing punches, the individualization and coding of this body is done by the use of so-called coding discs, which also from the WO 2012/062305 A2 are known.
  • the proposed method described above describes the production of the coding parts and the subsequent production the castings a detour in the production of key and closing a locking system.
  • the production of keys and closing punches can be significantly simplified and economically positively influenced that the severing of a blank in the two coding much simpler means can be performed when the material for this blank is particularly low in resistance.
  • the blank can be configured as a wax body, so that the separating cut can be carried out with little resistance, for example by means of a heated rod or wire.
  • the coding parts produced in this way from the wax blank can then be further processed by means of the known from practice wax Ausschmelzvons, wherein the molten wax can flow through the vacancy of the sheath. Since it is provided for security reasons in the locking systems anyway, to use each encoding only once, the loss of the two coding parts, which form the lost models, not detrimental.
  • the advantage of the generic method of simultaneously creating the two complementary coding surfaces with the separating cut remains with the proposed method.
  • the separating cut can be passed through a blank when the blank is used from a plastic foam, for example, expanded polystyrene.
  • the separating cut can be guided by means of a heated rod or wire, wherein, for example, a metallic or ceramic rod can be used as a tool.
  • a metallic wire it can be replaced in a short time and at low cost against a new wire in case of failure of the tool, so that the production of the two coding parts can be performed in a very short time and at very low cost , for example, compared by performing a cutting cut in a metallic blank using the EDM process.
  • the multiple directional deflections in carrying out the separating cut cause considerable mechanical stress on the saw blade, so that in contrast, the proposed possible use of low-resistance materials for the blank, for example wax or plastic foam, a significant acceleration and ultimately also simplification of the method for producing key and closing punch causes.
  • the sheathing of the coding done in that a material is used for the sheath, which is initially deformable and can create optimal contour exactly to the respective coding part in this way. Subsequently, this material is solidified dimensionally stable.
  • This can be done in a conventional manner by a ceramic slurry, which is applied to the coding part and then cured. The ceramic material is subsequently also resistant when liquid metal is poured into the mold cavity.
  • it may be provided to produce the casing in a comparatively thin-walled manner and to ensure adequate mechanical or dimensional stability by embedding this thin-walled casing in a supporting mass, for example in sand.
  • the thin-walled casing can be produced with a defined outer shape and then be inserted for mechanical stabilization in a supporting formwork, which has a receiving space which is adapted to the defined outer shape of the casing.
  • the separating cut in the blank can advantageously be carried out by means of a programmable cutting device.
  • the data required for performing the separation cut which accordingly also describe the topography of a coding surface, can be stored, for example, digitally in a computer, so that easily and with great repeatability, the same Kodierization can be made a second or even more times. This can be advantageous in the case of replacement procurement, or if the same key is to be made available to several authorized persons in order to be able to operate the same closing punch. It may possibly be considered uncritical to use two identically coded interlocking systems, for example if two permanently installed interlocking systems are coded identically in a multinational enterprise at two locations which are far apart from each other. In this case, the manufacturing cost of the locking systems can be reduced, which is economically advantageous.
  • Fig. 1 is denoted by 1 a blank, which consists of wax and is designed as a rod with a cylindrical cross-section.
  • this blank 1 is separated by means of a separating cut into two coding parts.
  • This separating cut does not run in a straight line along the drawn line, but takes place deliberately with a plurality of directional deflections in and across the longitudinal axis L-L of the blank 1.
  • the two adjacent surfaces produced by the separating cut form so-called coding faces.
  • a coding part of a key and 3 a coding part of a closing punch are identified by 2.
  • Both coding parts 2 and 3 fit exactly into one another, ie have complementary coding surfaces or are designed as complementary coding parts.
  • Fig. 3 shows that from the coding part 2, a component 12 has been created, which has been worked out by a key handle 6 to a key 4 and from the coding part 3, a component 13 has been generated, which forms a closing punch 5.
  • the closing punch 5 has a central bore 7 and a radially outwardly projecting recess 8, so that here a locking pin and a radially outwardly projecting key bit of the key 4 can be accommodated, as is known per se.
  • Fig. 4 shows an arrangement similar Fig. 3 , In the production, however, much smaller, disc-shaped flat coding parts 2 and 3 were used. The time required to wrap the coding parts 2 and 3 and the subsequent casting and cooling of the components 12 and 13 can be reduced.
  • the components 12 and 13, which originated from the small coding parts 2 and 3, are therefore configured in this embodiment only as comparatively flat coding discs 9, which are respectively connected to a base body 10 of the key 4 and to a base body 11 of the closing punch 5 are.
  • the main body 10 and 11 can be made standardized in larger quantities and are completed to individual pairs of key 4 and closing punch 5 by the attachment of the correspondingly complementary coded components 12 and 13.
  • the coding part 3 can subsequently be removed from the sheath 14 by heating. For example, this removal can take place by liquefying a coding part 3 consisting of wax, and the liquid runs out of the envelope 14 through the cut-off point 15.
  • the heating can lead to the evaporation of the coding part 3, whereby the vapor escapes from the cut-out 15.
  • this envelope 14 is turned over so that it is in the in Fig. 7 is shown arrangement in which the free position 15 faces upward.
  • a flowable material can be introduced into the mold cavity 16 through the free position 15.
  • Another, not shown exemption can z. B. serve as a vent.
  • This flowable material may for example be a molten metallic alloy, so that a component 13 is provided whose shape corresponds to the coding part 3, but which, for example, in terms of temperature resistance, mechanical abrasion resistance, compressive strength and other properties of a much more resistant material than the coding part. 3 From this component 13, a sprue 17 is then removed, so that now the component 13 its in Fig. 4 having apparent shape and can be connected to the main body 11 to provide the closing punch 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forging (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Supports Or Holders For Household Use (AREA)

Claims (6)

  1. Procédé de codage d'une clé (4) et d'un piston de fermeture (5) pour une serrure d'un système de verrouillage,
    sachant qu'une pièce brute (1) est divisée - par une coupure de séparation guidée transversalement à l'axe longitudinal (L-L) et en direction de l'axe longitudinal (L-L) de la pièce brute (1) - en deux pièces de codage (2, 3) qui présentent chacune une surface de codage,
    et sachant que la transformation des deux pièces de codage (2, 3) se poursuit pour obtenir une clé (4) et un piston de fermeture (5),
    caractérisé en ce
    que l'usinage de finition de chacune des deux pièces de codage (2, 3) pour obtenir une clé (4) ou un piston de fermeture (5) inclut les étapes de procédé suivant :
    • la pièce de codage (2, 3) est enrobée d'un matériau de forme stable et présentant un point de fusion plus élevé que la pièce de codage (2, 3),
    • sachant que l'enrobage (14) est incomplet pour qu'il reste une zone libre (15) sur laquelle la pièce de codage (2, 3) ne comporte pas d'enrobage (14),
    • la pièce de codage (2, 3) est échauffée jusqu'à une température supérieure à sa température de fusion et à laquelle la forme de l'enrobage (14) est encore stable,
    • le matériau de la pièce de codage (2, 3) est retiré de l'enrobage (14) via la zone libre (15), à l'état liquide de fusion ou à l'état gazeux,
    • le matériau est versé dans la cavité (16) de moule maintenant fournie par l'enrobage (14), matériau qui est prévu pour la surface de codage prévue sur la clé (4) ou sur le piston de fermeture (5)
  2. Procédé selon la revendication 1, caractérisé en ce que l'enrobage (14) des pièces de codage (2, 3) a lieu en apportant le matériau, déformable dans un premier temps, sur les deux pièces de codage (2, 3), et qu'ensuite il est durci pour acquérir une forme stable.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'est utilisée une pièce brute (1) en cire.
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'est utilisée une pièce brute (1) en mousse de matière synthétique.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que pour réaliser la coupure séparatrice une barre échauffée est guidée à travers la pièce brute (1).
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que les pièces de codage (2, 3) fabriquées à partir de la pièce brute (1) sont configurées en disques (9) de codage,
    et en ce que ces disques de codage (9) sont reliés avec un corps de base (10, 11) de la clé (4) respective ou du piston de fermeture (5) respectif pour fabriquer une clé (4) ou un piston de fermeture (5).
EP14744346.9A 2013-08-28 2014-07-28 Procédé de fabrication de surfaces de codage à partir d'une pièce brute Active EP3038770B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310109320 DE102013109320A1 (de) 2013-08-28 2013-08-28 Verfahren zur Herstellung von Kodierflächen aus einem Rohteil
PCT/EP2014/066192 WO2015028226A1 (fr) 2013-08-28 2014-07-28 Procédé de fabrication de surfaces de codage à partir d'une pièce brute

Publications (2)

Publication Number Publication Date
EP3038770A1 EP3038770A1 (fr) 2016-07-06
EP3038770B1 true EP3038770B1 (fr) 2017-08-02

Family

ID=51228449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14744346.9A Active EP3038770B1 (fr) 2013-08-28 2014-07-28 Procédé de fabrication de surfaces de codage à partir d'une pièce brute

Country Status (5)

Country Link
US (1) US9527130B2 (fr)
EP (1) EP3038770B1 (fr)
CN (1) CN105531052B (fr)
DE (1) DE102013109320A1 (fr)
WO (1) WO2015028226A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3055467B1 (fr) * 2013-10-11 2018-12-05 Urbanalps AG Clé et serrure
CN110788564A (zh) * 2019-10-07 2020-02-14 祝红梅 锁芯的锁闩铁利头加工工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402201A (en) * 1980-11-14 1983-09-06 Clarence Nokes Snap-off key
JPS60255234A (ja) * 1984-05-31 1985-12-16 Toyota Motor Corp 鋳造用フルモ−ルド模型材料の加工方法
DE19636135C1 (de) * 1996-09-06 1997-12-18 Grundhoefer Joerg Verfahren zum Herstellen von Formgußteilen nach dem Wachsausschmelzverfahren und Ur-Gegenform zur Durchführung des Verfahrens
US7278465B1 (en) * 2005-04-05 2007-10-09 Wisys Technology Foundation Investment casting slurry composition and method of use
DE102010038105B4 (de) * 2010-10-11 2012-05-24 André Haake Verfahren zur Kodierung eines Schlosses und Rohteil zur Durchführung dieses Verfahrens

Also Published As

Publication number Publication date
CN105531052B (zh) 2018-01-12
WO2015028226A1 (fr) 2015-03-05
US20160167114A1 (en) 2016-06-16
DE102013109320A1 (de) 2015-03-05
EP3038770A1 (fr) 2016-07-06
CN105531052A (zh) 2016-04-27
US9527130B2 (en) 2016-12-27

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