EP3038770A1 - Verfahren zur herstellung von kodierflächen aus einem rohteil - Google Patents
Verfahren zur herstellung von kodierflächen aus einem rohteilInfo
- Publication number
- EP3038770A1 EP3038770A1 EP14744346.9A EP14744346A EP3038770A1 EP 3038770 A1 EP3038770 A1 EP 3038770A1 EP 14744346 A EP14744346 A EP 14744346A EP 3038770 A1 EP3038770 A1 EP 3038770A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coding
- blank
- key
- parts
- coding part
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title description 16
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000008018 melting Effects 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 10
- 238000012805 post-processing Methods 0.000 claims abstract 2
- 239000002984 plastic foam Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 description 10
- 230000000295 complement effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- a method of molded castings in which first a blank is produced, which is referred to as a "model.” On the model, a mass is applied, with the aid of which a first casting mold is produced, the cavity thereof In this first casting mold, molten wax is poured in, which solidifies into a wax model of the prototype, and after solidification, the wax model is coated with ceramic material and then melted out by heating, so that a second, this time ceramic,
- Casting remains. In this second casting mold, a liquid filled with cast iron. After it has solidified, we destroy the ceramic casting mold, so that now a model of the model consisting of the cast material 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 sheath is deliberately created with one or more false clippings 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.
- 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 co The surfaces thus take place in an upstream process section and with a preliminary, easy-to-machine material, before the components used in the locking system are produced 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 standardized basic bodies of keys and standardized basic bodies of closing punches for the production of a plurality of keys and closing punches, the individualization and coding of these basic bodies being effected by the use of so-called coding discs, which are also known from WO 2012 / 062305 A2 are known.
- Wax blank produced coding can then be further processed by means of the known from practice Wachsausmelz- method, wherein the molten
- Wax can flow out of the shell through the free space. 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 also be guided through a blank in the same way when the blank is used made of a plastic foam, for example expanded polystyrene. Also in this case, 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 if used, 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 , compared with- For example, to perform a separation cut in a metallic blank using the EDM process.
- the parting cut is performed by a metallic pipe part by means of a saw blade
- 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.
- To accelerate the process can be provided to produce the casing relatively thin-walled and to ensure sufficient mechanical or shape stability characterized in that this thin-walled casing is embedded 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 determines the topography of a coding surface.
- Write can be stored, for example, digitally in a computer, so that easily and with great repeatability, the same coding surface 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 costs of the locking systems can be reduced, which is economically advantageous.
- FIG. 4 shows a view similar to FIG. 3, wherein, however, the coding surfaces of key and closing punch are provided by a respective coding disc
- FIG. 5 shows a coding part provided with a sheath
- Fig. 7 the sheath of Fig. 6, filled with the final to be used on the key or on the closing punch material, which provides the respective Kodier requirements.
- Fig. 1 denotes a blank, which consists of wax and is designed as a rod with a cylindrical cross-section. Along a dividing plane T - T, 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 direction 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 surfaces.
- the two shown in FIG. 2 apparent coding 2 and 3.
- With 2 is a coding part of a key and 3 a coding part of a closing stamp marked. 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 by a key handle 6 to a
- 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 to Fig. 3.
- 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 each connected to a base body 10 of the key 4 or to a base body 1 1 of the closing punch 5 are.
- the main body 10 and 1 1 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 corresponding complementary coded components 12 and 13.
- FIG. 5 shows a coding part 3 similar to that shown in FIG. 2, wherein, however, in the embodiment shown in FIG. 5, the coding part 3 has the comparatively flat shape of a coding disc.
- the coding part 3 is made of a material which allows the low-resistance production of the coding part 3 from a blank 1 by means of the mentioned separating cut.
- the blank 1 and consequently the coding part 3 consists of wax or of a foamed plastic.
- the coding part 3 is provided with an envelope 14 which, for example, was initially applied as a liquid coating to the coding part 3 and then dried, so that it is now in a dimensionally stable, solidified state.
- the envelope 14 has a cut-out 15, at which the coding part 3 is free from the envelope 14. Other cut-outs, such as the cut-out 15 shown, can be provided.
- 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 leads to the situation according to FIG. 6:
- the covering 14 has been retained dimensionally stable and forms a mold cavity 16.
- this envelope 14 is reversed, so that it is in the arrangement shown in Fig. 7, 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 has its apparent in Fig. 4 shape and can be connected to the main body 1 1 to create the closing punch 5.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Forging (AREA)
- Supports Or Holders For Household Use (AREA)
Abstract
Description
Claims
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 (de) | 2013-08-28 | 2014-07-28 | Verfahren zur herstellung von kodierflächen aus einem rohteil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3038770A1 true EP3038770A1 (de) | 2016-07-06 |
EP3038770B1 EP3038770B1 (de) | 2017-08-02 |
Family
ID=51228449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14744346.9A Active EP3038770B1 (de) | 2013-08-28 | 2014-07-28 | Verfahren zur herstellung von kodierflächen aus einem rohteil |
Country Status (5)
Country | Link |
---|---|
US (1) | US9527130B2 (de) |
EP (1) | EP3038770B1 (de) |
CN (1) | CN105531052B (de) |
DE (1) | DE102013109320A1 (de) |
WO (1) | WO2015028226A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2711175T3 (es) * | 2013-10-11 | 2019-04-30 | Urbanalps Ag | Llave y cerradura |
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)
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 |
-
2013
- 2013-08-28 DE DE201310109320 patent/DE102013109320A1/de not_active Withdrawn
-
2014
- 2014-07-28 CN CN201480047285.2A patent/CN105531052B/zh active Active
- 2014-07-28 WO PCT/EP2014/066192 patent/WO2015028226A1/de active Application Filing
- 2014-07-28 EP EP14744346.9A patent/EP3038770B1/de active Active
-
2016
- 2016-02-19 US US15/047,663 patent/US9527130B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN105531052B (zh) | 2018-01-12 |
CN105531052A (zh) | 2016-04-27 |
US20160167114A1 (en) | 2016-06-16 |
DE102013109320A1 (de) | 2015-03-05 |
EP3038770B1 (de) | 2017-08-02 |
WO2015028226A1 (de) | 2015-03-05 |
US9527130B2 (en) | 2016-12-27 |
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