EP3927996A1 - Linearaktuator und baukasten zur herstellung dieses linearaktuator - Google Patents
Linearaktuator und baukasten zur herstellung dieses linearaktuatorInfo
- Publication number
- EP3927996A1 EP3927996A1 EP19828210.5A EP19828210A EP3927996A1 EP 3927996 A1 EP3927996 A1 EP 3927996A1 EP 19828210 A EP19828210 A EP 19828210A EP 3927996 A1 EP3927996 A1 EP 3927996A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- linear actuator
- individual actuators
- individual
- actuator according
- 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.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 claims abstract description 19
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2031—Actuator casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2053—Screws in parallel arrangement driven simultaneously with an output member moved by the screws
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
Definitions
- the present invention relates to a linear actuator and a kit for the produc- tion of this linear actuator.
- a linear actuator has become known from DE102013222649 A1.
- the linear actuator has a housing and a rotor of an electric motor arranged in the housing, as well as a screw drive driven by the electric motor.
- the threaded spindle forms a drive shaft from which is arranged longitudinally displaceable with respect to the housing and penetrates the hous se.
- This linear actuator is designed in different sizes depending on the application and performance requirements, so that a large number of different linear actuators must be provided.
- the object of the present invention was to reduce the number of different linear actuators.
- the linear actuator is made up of several identical individual actuators. Depending on the performance requirements, several identical individual actuators can be combined to form a linear actuator and their output axes can be connected to one another, i.e. connected in parallel. The total output increases with the number of individual actuators connected together.
- identical means in particular that the external shape of the individual actuators is the same.
- These individual actuators each have a housing and the output shaft which is arranged to be longitudinally displaceable with respect to the housing and which penetrates the housing.
- the individual actuator preferably has a screw drive, which is closed to the output shaft, which is pushed longitudinally ver under actuation of the screw drive relative to the housing.
- An electric motor which drives the screw drive, for example, can be arranged in the housing.
- the housing can also be part of the stator of the electric motor or accommodate its motor housing.
- the rotor of the electric motor can drive the screw drive, which is advantageously formed by a planetary roller screw drive known per se.
- a trapezoidal screw drive or a ball screw drive are further alternatives.
- the threaded spindle or a nut of the screw drive acting together with the threaded spindle can be at the same time or part of an output shaft which is arranged so that it can be displaced longitudinally relative to the housing and penetrates the housing.
- the output shaft can be guided in the housing in a longitudinally displaceable manner and secured against rotation.
- the nut is secured against rotation with respect to the housing and is arranged longitudinally displaceably and is part or at the same time the output shaft that penetrates the housing.
- the threaded spindle is secured against rotation relative to the housing and is arranged to be longitudinally displaceable and is part or at the same time the output shaft that penetrates the housing.
- the planetary rollers can be stored in a planetary roller carrier which is arranged between the nut and the threaded spindle. In this case, the planetary roller carrier can be driven in rotation.
- the threaded spindle is secured against rotation with respect to the housing and is longitudinally displaceable and is part or at the same time the output shaft that penetrates the housing.
- the housing is designed on its outer circumferential surface as a polygon profile with polygon sides of equal length, which span outer polygonal surfaces arranged around the output shaft. These polygon areas can all be arranged parallel to the axis of the output shaft. At least one of the polygon surfaces of the housing is intended to rest against one of the polygon surfaces of one of the other housings.
- all of the polygonal surfaces distributed over the circumference are of the same type, so that any two polygonal surfaces can be brought into contact by two individual actuators.
- the linear actuator can be provided with a coupling element that couples the drive axes of several individual actuators with each other for common adjusting movements Actuators.
- This coupling element can be designed in a simple embodiment as aticiansplat te, to which the output shafts of all combined single actuators are attached, the combination plate having at least two receptacles for the drive shafts from the individual actuators.
- a total output of the linear actuator corresponding to the number of individual actuators used can be provided via the coupling element. So it is conceivable to use only a single actuator when the power requirement is only very low, and to switch many of these individual actuators in parallel in a common group when the power requirement increases.
- the coupling element can have a central output shaft which, depending on the application, can be connected to other machine elements. The coupling element moves together with the output axes of the individual actuators.
- the packing density of the connected groups of individual actuators can be designed differently.
- Compact linear actuators with high performance requirements are desired in numerous applications. It is particularly advantageous here to form the polygon profile with a hexagon profile. If several of these individual actuators are connected together, a honeycomb arrangement of the individual actuators is provided with a high packing density. Two adjacent hexagonal surfaces of one and the same housing can be brought into contact with two polygonal surfaces which are each formed on one of the further housings. In this arrangement, a group of several individual actuators is therefore provided to form a linear actuator. Of course, it can be sufficient to connect two individual actuators together. However, it is also possible to combine three, four or more individual actuators without any problems.
- the polygonal profile can alternatively be provided by a triangular profile, two triangular surfaces arranged adjacent to one another being seen to rest on two triangular surfaces which are each formed on one of the further housings.
- an association of at least two individual actuators can therefore be provided to form a linear actuator.
- the polygonal profile can also be designed as an octagonal profile, two octagonal surfaces adjoining a central octagonal surface on the circumferential side for contact with two octagonal surfaces. Chen are provided, which are each formed on one of the further housing. If, for example, four such individual actuators are put together in a closed ring shape, a central passage formed by the four individual actuators is created, which can be used, for example, to accommodate a holder to which this linear actuator is attached.
- the housing of the individual actuator can be designed on its inner lateral surface as a polygonal profile with polygonal sides of the same length, which span inner polygonal surfaces arranged around the output shaft.
- the inner and / or outer polygon surfaces of the housing can be used as functional surfaces.
- the outer polygonal surfaces are provided with fastening projections and fastening receptacles for connecting individual actuators to one another, arranged over the circumference.
- a fastening projection of one housing is assigned to a fastening receptacle of one of the other housings.
- a simple development can provide several blind holes on the outer circumference of the housing. Dowels can be used as connecting elements in one or more of these blind holes. If a further housing is to be connected, this dowel engages in a blind hole in the further housing.
- the outer polygon areas can also be used to attach nameplates or to accommodate external position contacts.
- the inner polygonal surfaces can be used to absorb torques that act between the rotor and the stator of the electric motor.
- the inner polygonal surfaces can be used to hold material measures or sensors if an axial travel path between the housing and Abretesach se is to be measured.
- the inner polygon surfaces can be used to guide a thread nut. This may be useful if the threaded spindle is driven by the electric motor and the threaded nut is to be guided in a longitudinally displaceable manner and secured against rotation relative to the housing.
- a planetary screw drive it is expedient if this is of the type of a planetary screw drive that is faithful to the slope.
- these planetary rolling gear have a threaded spindle, as well as planets with adjacently arranged, self-contained grooves that mesh with the thread of the threaded spindle, and a nut with formed on the inner circumference, self-contained grooves that with the grooves the planets comb.
- the planetary rollers are accommodated in a planetary roller carrier that is rotationally driven, i.e.
- the invention is also to give a kit for the production of this linear actuator.
- This construction kit comprises a series of identical individual actuators as well as a large number of different coupling elements - which can be formed by combination plates - for each series of individual actuators.
- Different coupling elements have a different number of receptacles for the output shafts of the individual actuators.
- a center-to-center distance between two output axes of two combined individual actuators is always the same.
- the coupling elements assigned to this series have an equally large center-to-center spacing of their receptacles for the output axles. If only two individual actuators are to be assembled, it may be sufficient to provide a coupling element with only two receptacles. If more than two individual actuators are to be put together, the coupling element is enlarged accordingly and has a corresponding number of receptacles.
- FIG. 1 A schematically illustrated individual actuator of a linear actuator according to the invention in cross section
- FIG. 2 shows the individual actuator from FIG. 1 in a view
- FIG. 3 shows the individual actuator from FIG. 2 in a perspective view
- FIG. 4 shows a linear actuator according to the invention in a view
- FIG. 5 shows the linear actuator from FIG. 4 in a further view
- FIG. 6 shows a further linear actuator according to the invention in a view
- FIG. 7 the linear actuator from FIG. 6 in a further view
- FIG. 8 a diagram of a further linear actuator according to the invention
- FIG. 9 shows a diagram of a further linear actuator according to the invention
- FIG. 10 shows a diagram of a further linear actuator according to the invention.
- Figures 1 to 3 show a single actuator 1, which has a housing 2 and an electric motor 3 arranged in the housing 2, the rotor 4 of which is indicated here only by dashed lines, drives a screw drive 5, the rotationally driven nut 6 of which cooperates with a threaded spindle 7.
- the threaded spindle 7 is part of an output shaft 8 which penetrates the housing 2 and is guided in a longitudinally displaceable manner and secured against rotation relative to the housing 2.
- the housing 2 is formed on its outer circumferential surface as a polygon profile 9 with poly gonches 10 of the same length, the outer polygon surfaces 11 arranged around the output shaft 8 span.
- the polygon profile 9 is formed by a hexagon profile with hexagon surfaces that form the polygon surfaces 11.
- the polygon surfaces 11 are designed as functional surfaces 15 and have fastening projections 16 and fastening receptacles 17 distributed around the circumference for connecting individual actuators to one another.
- the arrangement is selected here so that a fastening projection 16 of one housing 2 is assigned to a fastening receptacle 17 of a housing 2 of another individual actuator 1. This is the case when two of these individual actuators 1 are brought into contact with one another with their polygon surfaces 11 facing one another, as is shown for example in FIGS. 4 and 5.
- the fastening projections 16 and fastening receptacles 17 in FIG. 1 lie circumferentially next to one another and at a common height along the longitudinal axis of the individual actuator.
- FIG. 3 A variant of this is indicated in FIG. 3:
- the functional surfaces 15 are provided with blind holes 18 at their axial end sections. If two such individual actuators 1 are now to be brought into contact with one another with their facing polygonal surfaces 11, pins 19 can be inserted into the two blind holes 18 on one individual actuator 1 the.
- the protruding pins 19 form fastening projections 35 which engage in the fastening receptacles 36 forming blind holes 18 of the other individual actuator 1 in order to connect the individual actuators 1 to one another.
- FIGS. 4 and 5 show a first linear actuator which is composed of three of these individual actuators 1. It can be clearly seen that the three individual actuators 1 abut one another with one of the facing polygonal surfaces 11. These polygon areas 11 are all arranged parallel to the output axes 8. The dashed lines show the abutting polygonal surfaces 11 of the three individual actuators 1.
- the three output shafts 8 are attached to receptacles 12 of a common combination plate 13, for example by means of a screw or clamp connection.
- the combination plate 13 carries a central output shaft 14 which is arranged parallel to the output shafts 8 of the single actuators 1.
- the three individual actuators 1 When the linear actuator is actuated, the three individual actuators 1 are energized and the output shafts 8 of the individual actuators move together by a desired stroke. This stroke is transmitted via the combination plate 13 and the central output shaft 14 to a machine element (not shown).
- the parallel connection of the three single actuators 1 means a tripling of the actuating force available on the central output shaft 14.
- FIGS. 6 and 7 show two further linear actuators which are composed of several of these individual actuators 1.
- two individual actuators 1 are connected to one another.
- four individual actuators 1 are connected to one another.
- combination plates of different sizes are used.
- the exemplary embodiment according to FIG. 6 shows a combination plate 20 with only two receptacles 21 for output axles 8 of the individual actuators 1.
- the exemplary embodiment according to FIG. 7 shows a combination plate 22 with four receptacles 23 for output axles 8 of the individual actuators 1.
- These combination plates 20, 22 each carry one of the central output axes 14.
- FIG. 9 uses a diagram to show a group of six individual actuators 1 to form a linear actuator, as has already been described in the exemplary embodiment according to FIG .
- a central opening 28 is formed, which can be used, for example, to hold the overall association of this linear catalyst.
- a hexagon rod could be used on which each individual linear actuator is held.
- FIG. 10 shows an association of four individual actuators 30 to form a linear actuator, the housing 31 of which has a polygonal profile 32 in the form of an equilateral octagon and forms an octagonal profile. Otherwise, these individual actuators 30 can have the same structure as the individual actuators 1 described above. It can be clearly seen that all the individual actuators 30 rest against one another with their facing polygonal surfaces 34. In the center of the annular arrangement, a central opening 33 is formed, which can be used, for example, to hold the overall association of this linear catalyst. For example, a square rod could be used on which each individual actuator 30 is held.
- adapted combination plates are provided, as described above.
- the design of these combination plates follows the arrangement of the individual actuators and the position of the output axes.
- These combination plates can, for example, have two, three, four, five or six receptacles for fastening the output axes of the individual actuators.
- All of the linear actuators described here are built from a common kit.
- This modular system includes, for example, the series of individual actuators 1, 24, 30 described here as well as a large number of different combination plates for each Series of single actuators.
- the combination plates differ in the number of mounts and the center-to-center distance of the mounts. Since the honeycomb shape enables a particularly favorable packing density, a simple construction kit can only have the series of individual actuators with a hexagonal profile and a plurality of different combination plates, depending on the number of individual actuators combined with one another.
- combination plates 13, 20, 22 can be referred to in general form as coupling elements 37, 38, 39, which couple the output shafts of several individual actuators with each other for common Stellbe movements.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019104252.6A DE102019104252B3 (de) | 2019-02-20 | 2019-02-20 | Linearaktuator und Baukasten zur Herstellung dieses Linearaktuators |
| PCT/DE2019/101053 WO2020169133A1 (de) | 2019-02-20 | 2019-12-06 | Linearaktuator und baukasten zur herstellung dieses linearaktuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3927996A1 true EP3927996A1 (de) | 2021-12-29 |
Family
ID=69024074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19828210.5A Withdrawn EP3927996A1 (de) | 2019-02-20 | 2019-12-06 | Linearaktuator und baukasten zur herstellung dieses linearaktuator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220136592A1 (de) |
| EP (1) | EP3927996A1 (de) |
| CN (1) | CN113412381A (de) |
| DE (1) | DE102019104252B3 (de) |
| WO (1) | WO2020169133A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3901490B1 (de) * | 2020-04-20 | 2023-03-01 | elero GmbH | Linearantrieb |
| DE102020110697A1 (de) | 2020-04-20 | 2021-10-21 | Physik Instrumente (PI) GmbH & Co KG | Linear-Versteller, Positionier-Vorrichtung, Positionier-Anordnung und Verfahren zur Instandsetzung eines Linear-Verstellers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585563B1 (de) * | 1992-09-04 | 1996-11-13 | Lean-Technik R. Janzen | Vorrichtung zur Erzeugung von synchronen Schub-/Drehbewegungen |
| FR2866020B1 (fr) * | 2004-02-10 | 2006-06-16 | Rocco Compagnone | Systeme de structures telescopiques mises en oeuvre par une serie de verin a vis |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6412156B1 (en) * | 1999-05-21 | 2002-07-02 | Toyoda Koki Kabushiki Kaisha | Multi-spindle machine tool |
| WO2001089981A1 (en) * | 2000-05-22 | 2001-11-29 | Ideassociates (Iom) Limited | Telescopically moving structure |
| JP2004028169A (ja) * | 2002-06-24 | 2004-01-29 | Smc Corp | 電動アクチュエータ |
| JP2005083474A (ja) * | 2003-09-09 | 2005-03-31 | Ntn Corp | 電動リニアアクチュエータ |
| EP1566238B1 (de) * | 2004-02-07 | 2006-05-24 | Festo AG & Co | Elektrischer Linearantrieb mit einer Steckkupplung zwischen einem Spindeltrieb und einem Motormodul |
| DE102007016694B4 (de) * | 2007-04-04 | 2009-12-03 | Edgar Klitsch | Bohraggregat mit ein- oder mehrreihigen ausstellbaren direkt angetriebenen Bohrspindeln |
| DE102013222649A1 (de) * | 2013-09-11 | 2015-03-12 | Schaeffler Technologies Gmbh & Co. Kg | Linearaktuator |
| FR3016012B1 (fr) * | 2013-12-30 | 2017-06-09 | Chassis Brakes Int Bv | Actionneur avec sous-ensemble de transmission a engrenages, et frein a tambour et dispositif de freinage ainsi equipes |
| JP6372959B2 (ja) * | 2014-09-30 | 2018-08-15 | 株式会社ミツバ | アクチュエータユニット |
| US9394926B1 (en) * | 2015-08-28 | 2016-07-19 | Kan Cui | Torque converter |
| US10945797B2 (en) * | 2019-01-29 | 2021-03-16 | Covidien Lp | Geared actuation mechanisms for surgical instruments such as for use in robotic surgical systems |
| US10731740B1 (en) * | 2020-02-10 | 2020-08-04 | Kan Cui | Multiple small-pitch helical drives in linear and rotary actuators |
| US11320031B2 (en) * | 2020-06-03 | 2022-05-03 | Battelle Energy Alliance, Llc | Linear differential |
-
2019
- 2019-02-20 DE DE102019104252.6A patent/DE102019104252B3/de active Active
- 2019-12-06 CN CN201980091475.7A patent/CN113412381A/zh active Pending
- 2019-12-06 US US17/432,306 patent/US20220136592A1/en not_active Abandoned
- 2019-12-06 WO PCT/DE2019/101053 patent/WO2020169133A1/de not_active Ceased
- 2019-12-06 EP EP19828210.5A patent/EP3927996A1/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585563B1 (de) * | 1992-09-04 | 1996-11-13 | Lean-Technik R. Janzen | Vorrichtung zur Erzeugung von synchronen Schub-/Drehbewegungen |
| FR2866020B1 (fr) * | 2004-02-10 | 2006-06-16 | Rocco Compagnone | Systeme de structures telescopiques mises en oeuvre par une serie de verin a vis |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2020169133A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113412381A (zh) | 2021-09-17 |
| DE102019104252B3 (de) | 2020-08-13 |
| US20220136592A1 (en) | 2022-05-05 |
| WO2020169133A1 (de) | 2020-08-27 |
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