EP3928332A1 - Verfahren zum herstellen eines wendelförmigen metallkörpers - Google Patents
Verfahren zum herstellen eines wendelförmigen metallkörpersInfo
- Publication number
- EP3928332A1 EP3928332A1 EP20705936.1A EP20705936A EP3928332A1 EP 3928332 A1 EP3928332 A1 EP 3928332A1 EP 20705936 A EP20705936 A EP 20705936A EP 3928332 A1 EP3928332 A1 EP 3928332A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metal body
- longitudinal axis
- helical
- turns
- blank
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
- H02K15/043—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines winding flat conductive wires or sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F2005/006—Coils with conical spiral form
Definitions
- wound coils are used. These usually surround poles / teeth in laminated cores. The coils usually fill the available in the standard design
- Installation space is not optimal. This results in a non-optimized power or torque density of the electrical machines based on the weight or the installation space of the coils.
- Coils cast or reshaped in their final contour increase the power or torque compared to wound coils or reduce the weight of the electrical machines when using cast or reshaped aluminum coils.
- the present invention is therefore based on the task of simplifying the production of a complex geometry in a helical metal body, in particular a coil, as far as possible in terms of process technology.
- the invention therefore relates to a method for producing a helical metal body, in particular from aluminum or an aluminum alloy, or also from copper or a copper alloy, in which a blank is first produced in a primary forming process or in a forming process or in a removing, in particular cutting process and in which one or more recesses are made in the blank by an abrasive process, which recesses define a circumferential helix, the adjacent windings of which are spaced apart, in particular electrically isolated from one another.
- the contour of the helical metal body can be prefabricated largely depending on the intended use and the individually available space, and the areas of the metal body that are difficult to shape and to shape during casting or another primary form or forming process or an abrasive process are integrated are processed in a subsequent erosive process.
- the actual helical structure can also only be produced in the ablative machining by making recesses, for example by producing a helical recess which, as a circumferential helical slot, separates the individual turns of a coil that is being created.
- the abortive procedures in question will be discussed further below.
- very narrow slots can be made in the body so that the distances between adjacent turns are very small and the use of the installation space is optimized accordingly.
- One possible embodiment of the method relates to the fact that the erosive process is carried out with an erosive processing device, the metal body rotating about its longitudinal axis and at the same time being moved translationally relative to the processing device parallel to its longitudinal axis. This includes both the translational movement of the metal body and a possible translational movement of the machining device.
- Another possible embodiment of the method relates to the fact that the erosive process is carried out with an erosive processing device, the processing device rotating around the metal body while the metal body is simultaneously moved in a translatory manner parallel to its longitudinal axis relative to the processing device.
- This embodiment should also include the possibility that the relative movement of the metal body and the processing device is realized parallel to the longitudinal axis of the metal body by a movement of the processing device. It only depends on the relative movement of the processing device and the metal body.
- a regular helical structure can be introduced into the metal body in a simple manner, optionally with a variable pitch of the helix, as will be explained below.
- Another possible embodiment of the method therefore relates to the fact that the ratio of the rotational speed of the metal body or the processing device to the translational movement speed when making the recess / s in the metal body is variable as a function of the axial height of the processing location in relation to the longitudinal axis .
- This allows the pitch of the helix and the Height of the individual turns of the helix in the direction parallel to the longitudinal axis of the helix can be suitably adjusted and also varied along the longitudinal axis. For example, it makes sense to set a lower height of the turns where the diameter of the coil and thus the thickness of the turn in the radial direction with respect to the longitudinal axis of the helix is greater than where the diameter and dimensions of the turns are smaller in the radial direction .
- Another possible embodiment of the method relates to the fact that the machining is carried out by laser ablation, water cutting or machining.
- the machining methods mentioned allow fast machining with sufficient removal capacity.
- Another possible embodiment of the method relates to the fact that the machining is carried out simultaneously at different points on the metal body, in particular simultaneously from the inner and outer peripheral surface of the metal body.
- processing devices can be provided that work parallel to one another at different points on the metal body, for example next to one another, or one processing device from the outer peripheral surface, while another processing device carries out the removal from the inner peripheral surface.
- Another possible embodiment of the method relates to the fact that a coating, in particular an electrically insulating coating and / or a surface preparation for a subsequent coating of the metal body, takes place at the same time as the abrasive processing and / or the design of the abrasive processing.
- the invention also relates to a helical, with respect to its outer contour, in particular conical or pyramidal metal body, in particular made of copper or aluminum or an Al or Cu alloy, in which the helix extends around a longitudinal axis of the metal body and in which the outer contour extends of the metal body along the longitudinal axis from its first end in the direction of its second end steadily widened at least in sections, the height of the individual turns of the coil, each measured parallel to the longitudinal axis of the coil, along the longitudinal axis of the metal body from the first end to the second end towards reduced, in particular to such an extent that the amounts of the cross-sectional areas of the individual turns are the same along the longitudinal axis.
- variable height of the individual turns of the helix By designing the variable height of the individual turns of the helix, great variability in the cross-sectional areas of the turns can be prevented.
- the height of the individual turns can also be selected so that the cross-sectional area is essentially the same for all turns.
- the last turns on the winding heads may have to be adapted or oversized. By suitably distributing the turns with a constant cross section, local heat loss effects in the winding can be avoided or reduced during operation.
- the invention relates to a helical, with respect to its outer contour, in particular conical or pyramidal metal body, in particular made of copper or aluminum or a Cu or Al alloy, in which the helix extends around a longitudinal axis of the metal body and in which the outer contour extends of the metal body along the longitudinal axis from its first end towards its second end, at least in sections, steadily increasing, with the turns of the helix each having a radially outer and a radially inner boundary surface and a first and second at least on part of the axial length of the metal body having axial top surface and wherein the axial top surfaces of the windings in the longitudinal section of the metal body with its longitudinal axis enclose an angle ⁇ which is smaller than 90 degrees, wherein in particular, in each case two adjacent axial cover surfaces are parallel to each other exposed turns.
- This embodiment is based on the idea that in the above-described form of manufacture of a helical body, in particular with a conical outer contour of the blank, the direction of the recess or the slot between the helical flights in the longitudinal section of the blank need not be perpendicular to the longitudinal axis of the helix.
- the optimized (i.e. minimized in terms of material removal) recess runs neither perpendicular to the longitudinal axis nor perpendicular to the outer contour, but in between, in many cases slightly more than 90 degrees inclined relative to the longitudinal axis of the blank.
- This direction defines the shortest possible incision, which extends from the outer contour / outer circumferential surface of the metal body to the inner circumferential surface of the metal body. This not only minimizes the mass to be removed when creating the helix, but also maximizes the material that remains, that is, the available conductor cross-section is maximized.
- the axial cover surfaces of the individual turns are understood to mean, in the case of a turn with a square cross-section, the two surfaces of a turn which each extend from the radially outer side of the turn with respect to the longitudinal axis of the helix / coil to its radially inner side and thereby to the slots / Adjacent gaps that extend between adjacent turns of the helix.
- Such an embodiment also relates to a helical metal body in which the angle a is greater than 90 degrees minus beta (a>
- ß is the cone angle of the metal body.
- This definition means that in the longitudinal section of the helix the slots between the turns do not run perpendicular to the inner or outer outer contour / circumferential surface, but in a direction that runs between a perpendicular on the inner circumferential surface and a perpendicular on the outer circumferential surface and thus are optimized with respect to the length of the slots, since in this direction the distance between the inner circumferential surface and the outer circumferential surface of a blank / metal body is minimized.
- Another embodiment relates to a helical metal body which has a central, axially symmetrical cylindrical or conical recess.
- the above-mentioned advantages with an alignment of the slots / spaces between the windings that is inclined to the perpendicular on the helix longitudinal axis can be achieved with contours of the helix in which the wall thickness of the helix varies over its length. This is the case in particular with a conical outer contour of the helix and a cylindrical central recess.
- the central recess can also be designed differently, for example conical or with a square cross-section, in order to achieve the largest possible conductor cross-section in the helix.
- a further optimized embodiment relates to a helical metal body in which the angle ⁇ is selected so that the length of the recess between the outer peripheral surface and the inner peripheral surface of the metal body is minimized in the longitudinal section of the metal body.
- Another embodiment relates to a helical metal body, in which the height of the individual turns of the helix along the longitudinal axis of the metal body from the first end to the second end is reduced, in particular to such an extent that the amounts of the cross-sectional areas of the individual Turns along the longitudinal axis are the same. In connection with the inclination / inclination of the spaces between the turns, this can result in a further optimization of the current-carrying capacity of the filament.
- Fig. 1 in a longitudinal section schematically a helical one
- FIG. 2 Metal body on a tooth of a sheet metal package, FIG. 2, in a longitudinal section, a casting mold for a metal body which has the outer contour shown in FIG. 1,
- Fig. 3 shows a device for producing a continuous helical recess in the metal body in order to produce a helical shape, as well
- a helical metal body 1 is shown in a longitudinal section in the form of a coil placed on a tooth 6 of a laminated core, the outer contour and outer circumferential surface of which extends from a first end la along the longitudinal axis 2 to a second end lb of the coil widened conically.
- the diameter D of the helical body which is conical in this example, increases steadily from the first end la to the second end lb of the body 1.
- approximately parallel slots 100, 101 are shown which, more precisely, are slot sections of a circumferential helical slot or a Represent helical recess.
- slots or recesses are mentioned in this text that limit the windings of the helix, slot sections or parts / sections of a helical circumferential recess are usually meant.
- the slots 100, 101 define the circumferential helix with the individual turns 3, 4, 5.
- the thickness of the individual turns increases from the first end la to the second end lb of the helix.
- the height H of the individual turns decreases accordingly from the first end 1 a to the second end 1 b, so that ideally the cross section of the individual turns is the same.
- an adjacent tooth 7 is also shown in addition to the tooth 6 of the laminated core of an essentially cylindrical, rotating electrical machine. It can be seen from the angle between the axes of the teeth 6, 7 that the installation space between them increases towards the outer circumference of the electrical machine, so that the installation space between the teeth 6, 7 can be optimally used by a conical coil.
- FIG. 2 shows a casting mold 8, 9, 10, 12 for the production of a conical metal body, as it is shown with respect to its outer contour in FIG. 1, but without a helical structure and without a recess / slot that defines the windings in a helix.
- a recess should only be incorporated into a blank in a subsequent manufacturing step, for example in the form of a solid metal body cast in the casting mold.
- any other production method can also be used for its production, such as machining or an additive
- the casting mold comprises a die 10, preferably made of a ceramic or with a ceramic coating, and a cylindrical mold core 12, which can also consist of a ceramic or be coated with a ceramic.
- the die consists of two parts 10a, 10b that are joined together along line 11.
- the die is used for casting in the direction of arrow 13 in a support mold 8 made of steel.
- the outer cone of the die 10 fits into the conical receptacle 9 of the support mold made of steel, so that the parts of the die in the steel mold are pressed together in a form-fitting manner and independently of thermal forces and expansions.
- the blank is cast in the die 10, for example from aluminum or copper.
- FIG. 3 shows a partially machined conical blank 14 in the form of a solid metal body made of copper or aluminum with a continuous, central, cylindrical recess 14a.
- a device With 15 a device be characterized, which is shown only schematically and which holds the blank rotatable and drivable about its longitudinal axis 2 in the direction of arrow 17 and at the same time enables a translational movement of the blank in the direction of arrow 16 that is controllable as a function of the rotation.
- a processing device 18 is shown, which is arranged in a stationary manner in this example, but which can also be driven instead of the blank 14. The processing device can then move linearly in the direction opposite to the arrow 6 and at the same time perform a rotational movement around the blank.
- the processing device 18 has a removal device 19 which generates an abrasive beam, for example a particle beam, a water jet or a laser beam, which enables removal / cutting of a helical recess 201 in the blank, the recess from the outer circumferential surface 31 to to the inner circumferential surface 30, that is to say up to the cylindrical recess 14a.
- an abrasive beam for example a particle beam, a water jet or a laser beam
- the beam control can also cause the edges of the cut recess to be beveled or rounded on at least the outer peripheral surface of the blank on one or both sides of the recess.
- one edge of the slot-shaped recess on the outer circumferential surface 31 is often acute-angled, while the other edge is obtuse-angled. It can also be provided, for example, that only the acute-angled edge is rounded or beveled.
- Figure 4 shows a conical helical metal body 1 'with a conical outer contour and outer peripheral surface 31 and a cylindrical central recess 20 with a cylindrical inner peripheral surface 30.
- the exemplary slots / slot sections 201, 202, 203 close with the longitudinal axis 2 of the coil different angles.
- the angle between the slot 202 and the longitudinal axis 2 is designated by a by way of example.
- the cone angle of the outer circumferential surface of the body 1 'with the longitudinal axis is denoted by ⁇ .
- the slot 201 is aligned such that it is perpendicular to the longitudinal axis 2 with its slot plane in the illustrated longitudinal section of the body 1 ', so that the angle a is equal to 90 degrees there.
- the slot 203 is aligned such that its slot plane in the illustrated longitudinal section of the body 1 'is perpendicular to the outer circumferential surface of the body 1'. In this case, the angle ⁇ is significantly smaller than 90 degrees.
- the slot 203 is delimited on its lower side in the figure by the axial top surface 35 of the lowermost turn of the helix. This is opposite the further axial top surface 34 of the same turn.
- the surface 32 is the radially outer limiting surface and the surface 33 is the radially inner limiting surface of the same turn.
- the slot 202 is oriented so that its orientation is between an arrangement at right angles to the longitudinal axis 2 and an arrangement at right angles to the outer peripheral surface. This alignment leads to a minimized length of the slot in the radial direction, thus minimizing the processing for introducing the slot (s) and also maximizing the remaining conductive material of the helix.
- the production of a cast or reshaped coil with a cross section that is potentially variable along the longitudinal axis is broken down into two sub-steps in terms of production engineering: First, a simple, solid preform / blank optimized for the installation space geometry, for example with variable wall thickness, is produced.
- the preform / blank is cut by machining with superimposition of rotary and translational movement ("peeling"), or, more generally, a recess, for example a slot, is made in the blank by removing machining, so that turns are created that overhang the length of the helix / coil with respect to the pitch / helix height or the height in the longitudinal direction of the helix or, for example, with respect to its thickness in the radial direction of the helix can be variable.
- the following features apply: a)
- the invention can be used in the production of electrical coils, (mechanical) springs or spirals by the helical removal of material from a preform / blank.
- peeling process The process of helical removal (“peeling process") is created by superimposing a rotational relative movement with a translational relative movement between a removal tool or abrasive jet and the preform.
- a different height of the turns can be achieved during peeling.
- the cross-sectional area of the resulting turns can be kept constant with a variable wall thickness of the preform by controlling the translational movement over the height.
- the cutting in the above-mentioned peeling movement is carried out by laser, electron beam, water jet or other suitable method for
- Cutting metal or other electrically conductive materials can take place simultaneously in several planes through several parallel cuts, the spacing of which is regulated to match the trans lational movement.
- the cutting operation can be carried out from the inside, from the inner circumferential surface of the metal body or from the outside thereof or simultaneously from the inside and outside.
- the preform / blank Before the peeling process, the preform / blank, as a block, has the geometry / outer contour and inner contour of the later coil (or spiral or spring), taking into account the removal by cutting and the application by coating (e.g. insulation or protective coating).
- the preform consists of an electrically conductive material, for example Al or Cu, and can be produced by primary shaping, reshaping or by machining processes.
- the shaping of an Al preform / blank can e.g. B. cast by pressure or extrusion.
- the near net shape geometry of the preform is decisive with regard to the subsequent coil.
- the peeling process creates the individual turns of the coil from the preform.
- the shape of a Cu preform can, for. B. go in Niederbuchg intelligentver, all other common Cu casting processes or by forming or cutting processes.
- Cutting by means of beam sources can be used to influence the cut surfaces in order, for example, to achieve surface pretreatment for subsequent coating by means of suitable additives.
- the peeling process can be expanded to provide electrical insulation at the same time by combining the cutting process with the introduction of filler material.
- the beam guidance at the entrance and exit of the slits from the body can simultaneously round the cut edges, which can lead to optimization of the subsequent coating process and improved insulation.
- the peeling process and the entire process described here can also be used with a model body in the lost foam casting process instead of a cast metal body.
- the position of the preform relates to the peeling of the (e.g. EPS) model.
- the model previously created by peeling is cast and processed into an electrically conductive coil.
- the advantage of the invention consists in the cost reduction and series capability in the Fier ein of coils / coils (spirals, springs) with variable geometry of the winding cross-section over the length of the coil. Compared to wound coils, there are the advantages of the improved geometrical degree of filling and the efficiency and, from this, further advantages for an electrical machine.
- the Fier ein method according to the invention described above allows with simple means the Fier ein even relatively complex shaped helical metal bodies by dividing the process in two, in which the Fier ein a blank is separated from the formation of the helical shape.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019202236.7A DE102019202236A1 (de) | 2019-02-19 | 2019-02-19 | Verfahren zum Herstellen eines wendelförmigen Metallkörpers |
| PCT/EP2020/053969 WO2020169485A1 (de) | 2019-02-19 | 2020-02-14 | Verfahren zum herstellen eines wendelförmigen metallkörpers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3928332A1 true EP3928332A1 (de) | 2021-12-29 |
Family
ID=69630301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20705936.1A Pending EP3928332A1 (de) | 2019-02-19 | 2020-02-14 | Verfahren zum herstellen eines wendelförmigen metallkörpers |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11967868B2 (de) |
| EP (1) | EP3928332A1 (de) |
| CN (1) | CN113544801B (de) |
| DE (1) | DE102019202236A1 (de) |
| WO (1) | WO2020169485A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022239627A1 (de) * | 2021-05-14 | 2022-11-17 |
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| US1769455A (en) * | 1929-08-28 | 1930-07-01 | Doehler Die Casting Co | Core for undercut cup-shaped articles |
| GB828291A (en) | 1954-10-08 | 1960-02-17 | Burndept Ltd | Improvements in and relating to electric inductors |
| BE687737A (de) * | 1966-10-03 | 1967-03-16 | ||
| US3481249A (en) | 1967-11-06 | 1969-12-02 | Page Communications Eng Inc | Milling machine for making spiral conical antenna feed |
| JPS50145849A (de) * | 1974-05-14 | 1975-11-22 | ||
| US4614630A (en) * | 1984-04-02 | 1986-09-30 | Minnesota Mining And Manufacturing Co. | Mold having ceramic insert, method for injection molding using the same |
| JPH04171110A (ja) | 1990-10-31 | 1992-06-18 | Toshiba Corp | コイル形状物の製造方法 |
| CH682860A5 (de) * | 1991-12-13 | 1993-11-30 | Zellweger Uster Ag | Messwandler für statische Elektrizitätszähler. |
| JPH07163100A (ja) * | 1993-12-07 | 1995-06-23 | Seiko Epson Corp | コイルおよびコイルの製造方法 |
| DE19637288A1 (de) * | 1996-09-13 | 1997-10-09 | Fichtel & Sachs Ag | Spule zur Erzeugung eines Magnetfeldes |
| JPH1197270A (ja) * | 1997-09-18 | 1999-04-09 | Tdk Corp | 平角コイルとその製造方法 |
| JP2005197388A (ja) * | 2004-01-06 | 2005-07-21 | Goto Denshi Kk | コイルおよびその製造方法 |
| JP4500654B2 (ja) * | 2004-11-25 | 2010-07-14 | 住友電気工業株式会社 | 異形断面コイルの製造方法 |
| DE102009048160B4 (de) * | 2009-10-02 | 2019-05-16 | Böllhoff Verbindungstechnik GmbH | Einformbare Drahtgewindeeinsätze, Bauteil mit einformbarem Drahtgewindeeinsatz sowie Herstellungsverfahren eines Bauteils mit einformbarem Drahtgewindeeinsatz |
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| DE102010020897A1 (de) * | 2010-05-10 | 2011-11-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Elektrotechnische Spule in Gusstechnik, Herstellungsverfahren für eine solche Spule und Elektromaschinen verwendend solche Spulen |
| WO2012058685A2 (en) | 2010-10-29 | 2012-05-03 | Trumpf, Inc. | Rf-excited laser assembly |
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| US9500217B2 (en) * | 2012-07-03 | 2016-11-22 | Jörg Schwarzbich | Method for producing threaded parts |
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| JP7225484B2 (ja) * | 2018-06-04 | 2023-02-21 | 福井県 | 電気機器用コイルの製造方法 |
| DE102018215955A1 (de) * | 2018-09-19 | 2020-03-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Gießform zur Herstellung von wendelförmigen Gusskörpern |
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| DE102019211478A1 (de) * | 2019-07-31 | 2021-02-04 | Bruker Switzerland Ag | Magnetspulensektion mit integrierten Joints, insbesondere HTS-LTS-Joints, und zugehörige Magnetanordnung |
-
2019
- 2019-02-19 DE DE102019202236.7A patent/DE102019202236A1/de active Pending
-
2020
- 2020-02-14 WO PCT/EP2020/053969 patent/WO2020169485A1/de not_active Ceased
- 2020-02-14 EP EP20705936.1A patent/EP3928332A1/de active Pending
- 2020-02-14 US US17/310,651 patent/US11967868B2/en active Active
- 2020-02-14 CN CN202080015313.8A patent/CN113544801B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019202236A1 (de) | 2020-08-20 |
| US11967868B2 (en) | 2024-04-23 |
| CN113544801A (zh) | 2021-10-22 |
| US20220149706A1 (en) | 2022-05-12 |
| WO2020169485A1 (de) | 2020-08-27 |
| CN113544801B (zh) | 2024-08-23 |
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