EP4018538A1 - Translation motor and method for producing a stator of a translation motor of this type - Google Patents
Translation motor and method for producing a stator of a translation motor of this typeInfo
- Publication number
- EP4018538A1 EP4018538A1 EP20774868.2A EP20774868A EP4018538A1 EP 4018538 A1 EP4018538 A1 EP 4018538A1 EP 20774868 A EP20774868 A EP 20774868A EP 4018538 A1 EP4018538 A1 EP 4018538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- die
- flat
- translation motor
- roller
- 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
- 238000013519 translation Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 48
- 239000007858 starting material Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims description 42
- 238000004049 embossing Methods 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 8
- 230000001746 atrial effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 17
- 238000011161 development Methods 0.000 description 12
- 230000018109 developmental process Effects 0.000 description 12
- 238000009499 grossing Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 108091081062 Repeated sequence (DNA) Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- CHBRHODLKOZEPZ-UHFFFAOYSA-N Clotiazepam Chemical compound S1C(CC)=CC2=C1N(C)C(=O)CN=C2C1=CC=CC=C1Cl CHBRHODLKOZEPZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/08—Salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/18—Machines moving with multiple degrees of freedom
Definitions
- the invention relates to a translation motor and a method for manufacturing a stator of such a translation motor.
- Linear motors and planar motors are known as such from the prior art. Solutions with passive stators are known in particular. Furthermore, such stators of linear and planar motors are known in which the tooth structure is obtained by milling out the spaces.
- a tooth structure with preferably small distances and exact geometry between the individual stator teeth is sought.
- a disadvantage is that such a production requires a lot of effort and material input, the effort and the precision required in the manufacture increasing with increasing fineness of the tooth structure. This leads to long production times and, in addition to high material consumption, also to high tool costs.
- the object of the invention is to show a translation motor that can be manufactured inexpensively and designed for a large spatial working area.
- the object of the invention is also to show an efficient method for producing a stator for this purpose, which is cost-effective and low-wear and enables a low use of material and low tool wear.
- the translation motor has an active translational rotor and a flat stator.
- a translation motor in the context of the present application is understood to mean an electric motor in which a rotor moves translationally relative to a stator in a plane.
- the translation motor is thus understood as a generic term for a linear motor with a drive movement in one translational degree of freedom and for a planar motor with a drive movement in two translational degrees of freedom.
- the active translational rotor is movable in relation to an X-axis in a stator plane.
- the active translational runner also referred to below for short as a translatory runner, is designed in a manner that is named per se. It has coils for generating a movable magnetic field and, through interaction with the stator, generates a driving force through which the translatory rotor moves.
- the translatory rotor can be moved translationally to an X-axis.
- the translation motor is a linear motor here.
- the X-axis runs parallel to the stator plane.
- the translational movement of the active translational runner is guided along the X-axis, preferably by means of at least one guide element, also referred to below as a linear guide.
- the planar stator has an upper side and an underside.
- the top and the bottom can have the same texture. They can also optionally differ, for example in terms of quality, coating or treatment.
- the top side it is possible for the top side to have a different chemical composition than the bottom side in order to allow a filling material to adhere to the optional filling of the tooth gaps To support the tooth structure or, conversely, to counteract the adhesion of dirt.
- the upper side has a tooth structure which is arranged linearly in the X-axis and is formed by stator teeth and stator tooth gaps.
- This tooth structure is arranged along the X-axis of the flat, embossed stator material.
- the geometric shape of the stator teeth can be designed almost as desired. However, it preferably corresponds to uniform simple shapes such as circles, ovals, squares or other polygons, each in a regularly repeated sequence.
- the space between the individual stator teeth is referred to as the tooth gap, which is preferably also arranged in a regularly repeated sequence.
- the stator teeth and the stator tooth gaps each form magnetic pole pairs.
- the flat stator is formed from a stamped, flat stator material, the stator having a die side and a male side.
- the die side is the raised side and the male side is the recessed side of the stamped stator material.
- the die side is formed by the die and the male side by the male die.
- the die is also referred to as the upper punch and the patrix as the lower punch.
- the flat stator is made from a stampable, sheet-like stator material by means of a stamping process.
- Soft magnetic materials are used as the starting material, which can be shaped by cold forming due to their ductility.
- the starting material is in the form of a sheet metal, which is stamped in blanks or as an endless roll material.
- the impressed structures form the tooth structure with stator teeth and stator tooth gaps.
- the process includes cold forming using a stamping process.
- the embossing process can be carried out as a press embossing or a roller embossing process.
- the press embossing process is a discontinuous process in which blanks of the flat stator material are embossed by pressing between the die and the male die.
- the die has depressions which the flat stator material receives.
- the male mold has elevations which press the flat stator material into the recesses of the female mold.
- the roll embossing process can be carried out continuously or not continuously.
- the flat stator material is fed to the process as an endless roll material, embossed in the process and then rolled up again.
- the embossing is done by means of a roller embossing machine using appropriately structured die and male rollers. Similar to the press embossing, the die roller has depressions into which the flat stator material is pressed by the elevations of the male roller.
- blanks of the flat stator material are passed through the embossing rollers and thus embossed.
- the upper side is formed from the die side, which has elevations which in turn form the stator teeth.
- the underside is formed by the male side.
- the dies are usually arranged above and the male dies below the flat stator material. After the stamping, the side of the die forms the top side, which has the raised stator teeth. At the same time, the male side forms the underside. Regardless of the spatial orientation, the upper side always designates the side that faces the translative runner.
- the embossed tooth structure produced on the flat stator can, due to the process, have a lower precision than b ner subtractive shaping, for example by milling. This can lead to a lower precision of the movement of the translative runner.
- the cost advantage results from the almost material loss-free production, which is offset by the cutting removal of the stator tooth gaps in manufacturing processes that have hitherto been customary according to the state of the art.
- the metal removal generates not only the material removed but also a high level of wear and tear on the cutting tools, which sometimes have to be serviced several times within one processing.
- the flat stator material becomes more stable through the stamping, since the stamped structures and the stiffening of the material caused by the cold forming lead to increased buckling stability.
- Another advantage is the possibility of additionally deforming or structuring the underside in the same work step by means of the male mold design.
- the geometry obtained in this way also makes it possible, as a particular advantage, to optimize the magnetic flux of the stator.
- a larger surface can be generated by structuring the underside, which, for example, when the stator is glued to an underground, causes the adhesive connection to be more rigid.
- the flat stator has a planar tooth structure in the X-axis and additionally in a Y-axis, which is formed by stator teeth and stator tooth gaps.
- the basic pattern which is generated by the distribution of stator teeth and stator tooth gaps, is symmetrical and repeatable both in the X-axis and in the Y-axis.
- the active translational rotor can be moved linearly to the X-axis and the Y-axis in the stator plane.
- the translation motor is designed as a planar motor. There are two linear degrees of freedom of the rotor movement, so that the rotor can assume any position in the area above the stator.
- the stamped, flat stator material is formed by roll stamping 3 by means of a pair of rollers. The advantage of roll embossing lies in the possibility of implementing a continuous embossing process.
- the pair of rollers has a die roller which forms the die side and a male die roller which forms the male side.
- the die roller is arranged over the top of the flat stator material and has depressions which receive the flat stator material through the flow of material as a result of the embossing.
- the male roller is assigned to the underside of the flat stator material and has elevations which displace the flat stator material at this point and press it into the depressions of the female roller.
- the method for producing a stator of a translation motor by means of an embossing tool has a die and a male die.
- the method for manufacturing a stator has the following method steps: a) Providing a flat ductile stator starting material b) Generating the tooth structure by means of stamping the stator starting material and obtaining the stamped flat stator material, the tooth structure being produced by means of the die on the upper side
- the flat stator starting material is preferably a metal sheet, which is either cut into sections or wound on a supply roll.
- the Metal is preferably an iron-containing alloy, for example steel, which has an appropriate ductility for the stamping process.
- the inlay i the embossing machine which has the die and male die and is used for embossing, is also understood as providing.
- the flat stator starting material When it is placed in the embossing machine, the flat stator starting material is placed between the die and the male die.
- the upper side points to the female part and the lower side to the male part.
- the embossing machine carries out embossing deformation of the stator starting material and produces the embossed flat stator material.
- the tooth structure is created by means of the indentations in the matrix on the upper side.
- the pressing force acts as a counterforce on the underside of the flat stator starting material.
- recesses are introduced by means of the cartridge. Reference is also made to the description of the flat stator of the translation motor, which applies here in the same way.
- the stamping deforming of the stator starting material is carried out by means of press stamping.
- Press embossing is a very cost-effective process, which is used particularly advantageously in the production of large quantities.
- the stator starting material is inserted into an embossing tool, which consists of a die and a male die.
- the die has depressions and the patrix has elevations which are brought together when the tool is closed. With its elevations, the male part presses part of the stator starting material into the recesses of the female part, as a result of which the stator teeth are formed at this point.
- the indentations that are pressed in by de rize are on the underside.
- the stamping of the stator starting material takes place by roll stamping by means of a pair of rolls.
- the pair of rollers has a die roller and a male roller, the tooth structure being produced by the die roller.
- the die roller has depressions into which the flat stator starting material is pressed by the elevations of the male roller.
- the non-concave structured surface parts of the die create the stator tooth gaps.
- the size of the stator tooth gaps can be adjusted by the circumferential spacing of the depressions in the die roll.
- ⁇ Roller embossing is particularly advantageous for continuous processing, especially as continuous production from the roll.
- a process step c) takes place after process step b), wherein in process step c) the stator teeth of the stamped, flat stator material are flattened by pressing on a stator tooth top.
- stator teeth can have process-related unevenness on their upper side, which could adversely affect the precision of the translation motor.
- the upper side of the stator teeth is understood to be the section of the surface contour of the stator teeth which faces the translative rotor. This is referred to below as the stator tooth top.
- the upper side of the stator tooth is firstly designed to be planar in itself. Second, the stator tooth tops of all stator teeth are preferably in the same plane.
- Such reworking of the stator teeth is advantageously carried out according to this development in a simple manner by renewed pressing or rolling with a flat pressing tool in order to level the surface of the stator teeth.
- the embossed, flat stator material is passed between two rollers, with at least the roller facing the top of the tooth of the stator having a smooth, non-structured surface.
- the two rollers have a fixed distance between them, which is determined by the desired arrangement and shape of the upper side of the stator tooth.
- Process steps b) and c) then preferably take place in one operation. This means that the embossing rollers and the smoothing rollers are arranged one after the other and the stator starting material first passes through the embossing rollers and subsequently, as the embossed stator material obtained in this way, the smoothing rollers.
- leveling or additional leveling can be carried out by surface grinding or similar machining processes.
- Fig. 2 translation motor top view
- FIG. 4 production of the flat stator by means of an embossing tool
- FIG. 5 production of the flat stator by means of a double roller
- FIG. 6 post-processing of the tooth structure explained in more detail.
- a finished planar stator 2 is shown in a plan view.
- the flat stator 2 is composed of four pieces of the stamped stator material 18, which are arranged side by side in the stator plane 3 is.
- the stamped stator material 18 has a tooth structure 8 which is formed from the stator teeth 9 and the stator tooth gaps 10.
- the tooth structure 8 has round stator teeth 9 which are arranged in staggered rows along the X axis.
- the translation motor is shown in a plan view.
- the translation motor is designed here as a planar motor.
- the translatory rotor 1 can move in the X and Y axes over the stator plane 3, which in this embodiment is limited by a simple frame structure 3a.
- the active translational rotor has two guide elements 1 a, which enable the non-contact movement of the active translational rotor 1 over the flat stator 2.
- the two guide elements 1a are arranged at right angles to one another and are along the frame structure 3a.
- the flat stator 2 is designed analogously to the embodiment shown in FIG. 1.
- Fig. 3 different versions of the embossed sheet-like stator material 18 are shown. These are subordinate to the shape and arrangement of the stator teeth 9. So in a) is already in i-ig. 1 described arrangement of the round stator teeth 9 in staggered rows shown again. Furthermore, the execution of round stator teeth 9 in non-offset rows b), square stator teeth in non-offset rows c) and rectangles in offset rows d) are shown.
- the tooth structure 8 is formed in all exemplary embodiments by the stator teeth 9 and stator tooth gaps 10.
- FIG. 4 shows an exemplary embodiment of the method for positioning the flat stator 2 by means of an embossing tool 14 in a side view.
- the embossing tool consists of a die 15 and a male mold 16. The depressions of the female mold 15 and the elevations of the male mold 16 interlock in the closed state of the embossing tool 14.
- the flat stator starting material 17 is inserted into the opened embossing tool in such a way that the upper side 4 faces the die 15 and the lower face 5 faces the male mold 16.
- the top 4 is formed by the die side 6 and the bottom 5 by the male side 7.
- the flat stator starting material 17 is provided discontinuously in this embodiment as a blank of sheet steel.
- step b) the embossing tool 14 is closed and the flat stator starting material 17 is pressed into the embossed flat stator material 18.
- the stator tooth 9 of the tooth structure 8 is embossed into the recesses of the die 15.
- the stator tooth gap 10 lies in the non-recessed section of the die 15. The tooth structure 8 is thereby produced.
- the top side 4 in the area of the stator teeth 9 forms the top side 19 of the stator teeth.
- Fig. 5 the production of the flat stator 2 by means of a pair of rollers 11 is shown in side view.
- the pair of rollers 11 is formed by the die roller 12 and the male roller 13.
- the die roller 12 has depressions and the male roller 13 has elevations.
- the pair of rollers 11 is arranged in such a way that the depressions of the die roller 12 and the elevations of the male roller 13 interlock, the distance between the depressions corresponding to the desired stator tooth gap size and distributed over the roller circumference is.
- the die roller 12 and the male roller 13 rotate in opposite directions, as a result of which the flat stator starting material 17 is transported further.
- the flat stator starting material 17 is placed in the rolling device.
- the flat stator starting material 17 is fed to the pair of rollers 11 as an endless material, for example from a roll.
- FIG. 8 A post-processing of the tooth structure 8 is shown in FIG.
- the stator teeth 9 are reworked.
- unevenness on the stator tooth surface 19 is eliminated by smoothing using a smoothing tool 20.
- the smoothing tool is formed by two rollers arranged at a fixed distance. The stamped, flat stator material 18 is guided in the direction of the arrow on the right through the smoothing rollers, which smooth any unevenness, for example rounded areas, and produce a flat top 19 of the stator teeth.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019005951.4A DE102019005951A1 (en) | 2019-08-23 | 2019-08-23 | Translation motor and method of manufacturing a stator of such a translation motor |
DE202019003493.5U DE202019003493U1 (en) | 2019-08-23 | 2019-08-23 | Translational motor and translational motor stator |
PCT/DE2020/000183 WO2021037293A1 (en) | 2019-08-23 | 2020-08-10 | Translation motor and method for producing a stator of a translation motor of this type |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4018538A1 true EP4018538A1 (en) | 2022-06-29 |
Family
ID=72560296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20774868.2A Pending EP4018538A1 (en) | 2019-08-23 | 2020-08-10 | Translation motor and method for producing a stator of a translation motor of this type |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220337137A1 (en) |
EP (1) | EP4018538A1 (en) |
CN (1) | CN114270677A (en) |
WO (1) | WO2021037293A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2154853A5 (en) * | 1971-09-28 | 1973-05-18 | Telemecanique Electrique | |
DE3041869C2 (en) * | 1980-11-06 | 1983-02-17 | Aluminiumwerk Tscheulin Gmbh, 7835 Teningen | Embossing roller pair |
JPH02119565A (en) * | 1988-10-27 | 1990-05-07 | Gunma Nippon Denki Kk | Manufacture of movable member of linear pulse motor |
JPH02136056A (en) * | 1988-11-14 | 1990-05-24 | Gunma Nippon Denki Kk | Metal mold for forming core pole teeth of linear pulse motor |
US7170203B2 (en) * | 2004-05-06 | 2007-01-30 | The Hong Kong Polytechnic University | Two-dimensional variable reluctance planar motor |
DE102004045992A1 (en) * | 2004-09-22 | 2006-04-06 | Siemens Ag | Electric machine |
DE102008018656B9 (en) * | 2008-04-11 | 2009-07-09 | Thyssenkrupp Steel Ag | Process for producing high-volume half-shells |
CN103036390B (en) * | 2012-09-28 | 2015-07-29 | 深圳大学 | Mixing magnetic flow two-dimensional planar motor |
-
2020
- 2020-08-10 CN CN202080058493.8A patent/CN114270677A/en active Pending
- 2020-08-10 WO PCT/DE2020/000183 patent/WO2021037293A1/en unknown
- 2020-08-10 US US17/636,157 patent/US20220337137A1/en active Pending
- 2020-08-10 EP EP20774868.2A patent/EP4018538A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US20220337137A1 (en) | 2022-10-20 |
WO2021037293A1 (en) | 2021-03-04 |
CN114270677A (en) | 2022-04-01 |
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