WO2005013463A1 - 工具取り付け孔を備えた扁平・中空型ブラシレスサーボモータ - Google Patents
工具取り付け孔を備えた扁平・中空型ブラシレスサーボモータ Download PDFInfo
- Publication number
- WO2005013463A1 WO2005013463A1 PCT/JP2004/010011 JP2004010011W WO2005013463A1 WO 2005013463 A1 WO2005013463 A1 WO 2005013463A1 JP 2004010011 W JP2004010011 W JP 2004010011W WO 2005013463 A1 WO2005013463 A1 WO 2005013463A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor housing
- end plate
- housing
- flat
- motor
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
- H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
Definitions
- the present invention relates to an SPM type brushless servomotor using a ring magnet as a rotor, and in particular, a flat-hollow brushless servomotor having a short axial length and a tool mounting hole. It is about. Background art
- Patent Document 1 As a hollow type brushless servomotor, for example, there is one described in Patent Document 1 below.
- an encoder is arranged at a rear end portion of the motor output shaft, and a front end portion of the hollow motor output shaft is connected to a load side via a speed reducer.
- Patent Document 1 Japanese Utility Model Laid-Open No. 3-54352
- An object of the present invention is to propose a flat / hollow brushless servomotor suitable for use in which a tool is directly attached to a motor rotation shaft and a work is pressed from both sides thereof to perform predetermined processing.
- a flat cylindrical motor housing with both ends closed,
- First and second housing through holes formed at the centers of the first and second end plate portions on both sides of the motor housing, respectively;
- a rotor shaft having both ends thereof partially exposed from the first and second housing through holes
- a tool mounting hole extending through the center of the rotor shaft
- First and second workpiece entry recesses respectively formed on outer surfaces of the first and second end plate portions of the motor housing;
- the first work entry recess is formed on the outer surface of the first end plate portion to a circular area including the first housing through hole and an outer peripheral edge of the motor housing continuously to the area. Is formed in a region of a predetermined width extending in the radial direction,
- the second work entry recess is formed on the outer surface of the second end plate portion to a circular area including the second housing through hole and an outer peripheral edge of the motor housing continuously to the area. It is characterized in that it is formed in a region of a predetermined width extending.
- the tool mounting hole has a polygonal cross section such as a hexagon.
- the maximum length of the rotor shaft in the axial direction is determined by the thickness between the bottom surfaces of the first and second workpiece entry recesses at the first and second end plate portions on both sides of the motor housing. It is desirable to be less than or equal to.
- the motor housing has a lead wire lead-out portion extending radially outward from the outer peripheral surface of the motor housing, and extends along a concave groove formed on the inner surface of the first or second end plate portion of the motor housing. It is desirable that the lead wire arranged and drawn out is drawn out to the lead wire lead-out portion.
- a detection mechanism for detecting a motor magnetic pole position includes an FG magnet disposed on one end face of the rotor shaft and the first mechanism facing the FG magnet in the motor housing.
- the magnetic sensor is constituted by a magnetic sensor such as a hall element disposed on the inner surface of the second end plate.
- first and second work entry recesses extending in the radial direction are formed on the outer surfaces of the end plate portions on both sides of the motor housing, and these recesses are formed. This is the portion of the motor housing where the axial thickness is the thinnest. Also, since the hollow part of the rotor shaft that fits inside the motor housing is used as a tool mounting hole, the tool mounting part does not protrude in the axial direction on both sides of the motor housing.
- the lead wire lead-out portion extends in the radial direction of the outer peripheral surface of the motor housing, and also protrudes in the axial direction from both ends of the motor housing. I haven't.
- the lead wire is drawn out along the concave groove formed by making the end plate portion of the motor housing thin, so that the space for drawing out the lead wire extends in the axial direction from both ends of the motor housing. Does not protrude.
- the space for disposing the components of the detection mechanism also utilizes the gap between the first or second end plate portion and the end face of the rotor shaft in the motor housing. Therefore, according to the present invention, a hollow brushless servomotor having an extremely flat tool mounting hole can be realized.
- a brushless servomotor having a tool mounting hole provides a machine for applying a predetermined force to a confronting portion of a work having a confronting portion at a narrow interval as described below.
- Suitable for use as an instrument That is, since the thickness of the brushless servomotor is thin, it can be inserted between opposing portions of the work that are opposing at a small interval.
- a tool is attached to the rotor shaft of the brushless servomotor, and in this state, the opposing parts of the work enter the first and second work entry recesses from the radial outside of the motor toward the center tool. In addition, the tip of the opposite part can be pressed against the tool. In this state, the brushless servomotor is driven to rotate, and a predetermined process can be performed on the opposite portion of the workpiece by the tool.
- FIG. 1 is a cross-sectional view of the brushless DC servomotor according to the present embodiment cut along a plane including its axis
- FIG. 2 is an end view when viewed from the direction of arrow A in FIG.
- FIG. 3 is an end view when viewed from the direction of arrow B in FIG.
- the brushless DC servo motor 1 has a flat cylindrical motor housing 2 with both ends closed, and a stator assembly 3 and a rotor assembly 4 are coaxially incorporated inside the motor housing 2. .
- the stator assembly 3 includes a ring core 31 made of a magnetic material, and a drive coil 33 wound around a salient pole portion of the ring core 31 via an insulator 32, and includes a cylindrical body 21 of the motor housing 2. It is mounted coaxially on the peripheral surface.
- 20 poles 24 It has a slot configuration.
- the rotor assembly 4 is disposed concentrically inside the stator assembly 3, and includes a hollow rotor shaft 41 and a ring magnet 42 fixed to a circular outer peripheral surface of the rotor shaft 41. Therefore, the ring magnet 42 faces the stator assembly 3 with a slight gap.
- the rotor shaft 41 has an inner peripheral portion 44 at the center of which a tool mounting hole 43 penetrates, an outer peripheral portion 45 facing the stator assembly 3, and a narrow portion 46 connecting them. It has a cross-sectional shape, and ball bearings 47 and 48 are arranged in annular concave portions formed on both sides of the narrow portion 46. An oil seal 49 is arranged outside the ball bearing 47.
- the rotor assembly 4 is rotatably supported by the motor housing 2 via the ball bearings 47 and 48.
- the tool mounting hole 43 formed in the rotor shaft 41 has a large diameter portion 43a on the first end plate portion 22 side and a smaller diameter portion 43b on the second end plate portion 23 side. It has a hexagonal cross section.
- the motor housing 2 has the cylindrical body portion 21, the end plate portion 22 and the end plate portion 23 closing both ends thereof, and these end plate portions 22, Circular through holes 22a and 23a are formed at the center of 23. Both end surfaces 45a, 45b of the inner peripheral portion 45 of the rotor shaft 41 are exposed from the circular through holes 22a, 23a, respectively.
- the first and second workpiece entry recesses 24 and 25 having a constant depth are formed in the first and second workpieces.
- These recesses 24, 25 for entering the work are formed by making the end plate portions 22, 23 thin with a constant width.
- the length of the rotor shaft 41 in the axial direction is equal to or less than the thickness between the bottom surfaces of the workpiece entry concave portions 24 and 25.
- both end surfaces of the rotor shaft 41 are provided on the bottom surfaces of the concave portions 24 and 25. Are almost the same.
- a ring-shaped FG magnet 51 is attached to an annular end surface 44a of the outer peripheral portion 44 of the rotor shaft 41 facing the end plate portion 22 of the motor housing 2.
- a sensor substrate 53 on which three Hall elements 52 are arranged along the circumferential direction is attached to the inner surface of the end plate portion 22 facing the FG magnet 51.
- This The magnetic pole position detecting mechanism 5 is constituted by the FG magnet 51 and the Hall element 52.
- the lead wire lead-out portion 6 from the drive coil 33 and the sensor board 53 projects radially outward from the outer peripheral surface of the cylindrical body portion 21 of the motor housing 2, and
- the thickness is set to fit within the thickness dimension in the direction of the axis la.
- a lead wire drawing groove 26 formed by reducing the thickness is formed on the inner surface of the end plate portion 22 of the motor housing 2.
- a cylindrical body 21 and an end plate portion 23 are formed integrally, and an end plate portion 22 is fastened and fixed to an annular end surface of the cylindrical body 21. It has a structure.
- a mounting flange 27 extends radially outward from the outer peripheral surface of the cylindrical body 21, and the motor 1 is fixed to a fixed side (not shown) by the mounting flange 27. Is done.
- the outer surface 23b of the end plate portion 23 is formed as a heat radiating surface having a radially uneven surface.
- the motor components are incorporated in the flat cylindrical motor housing 2, and are exposed from the center through holes 22 a and 23 a of the end plate portions 22 and 23.
- a tool (not shown) can be directly attached to the tool attachment hole 43 of the rotor shaft 41.
- recesses 24 and 25 for work entry on the outer surfaces of both end plate portions 22 and 23 of the motor housing 2 a portion having a small thickness in the direction of the axis la is formed in the motor housing 2.
- the work (not shown) provided with the ridges at a smaller interval than the width in the axial direction of No. 2 can enter both ends of the tool mounting hole 43 of the rotor shaft 41 from the outside in the radial direction.
- the thickness of the end plate portion 22 of the motor housing 2 is reduced, a concave groove 26 for leading out the lead wire is formed, and the lead wire lead-out portion 6 is accommodated within the thickness dimension of the motor housing 2. I'm trying.
- the magnetic pole position detecting mechanism 5 is disposed radially inward of the torque generating portion (the portion where the rotor assembly 4 and the stator assembly 3 face each other). I try not to be long. Therefore, an extremely flat hollow brushless DC servomotor can be realized.
- FIG. 1 A case where a brushless DC servomotor to which the present invention is applied is cut along a plane including an axis line FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Brushless Motors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04747477A EP1628387B1 (en) | 2003-08-04 | 2004-07-14 | Flat hollow type brushless servo motor with tool mounting hole |
US10/529,188 US7462967B2 (en) | 2003-08-04 | 2004-07-14 | Flat hollow brushless servo motor with tool mounting hole |
DE602004016493T DE602004016493D1 (de) | 2003-08-04 | 2004-07-14 | Bürstenloser servomotor des flach-hohltyps mit werkzeuganbringloch |
JP2005512466A JP4119452B2 (ja) | 2003-08-04 | 2004-07-14 | 工具取り付け孔を備えた扁平・中空型ブラシレスサーボモータ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003285505 | 2003-08-04 | ||
JP2003-285505 | 2003-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005013463A1 true WO2005013463A1 (ja) | 2005-02-10 |
Family
ID=34113883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/010011 WO2005013463A1 (ja) | 2003-08-04 | 2004-07-14 | 工具取り付け孔を備えた扁平・中空型ブラシレスサーボモータ |
Country Status (8)
Country | Link |
---|---|
US (1) | US7462967B2 (ja) |
EP (1) | EP1628387B1 (ja) |
JP (1) | JP4119452B2 (ja) |
KR (1) | KR101027839B1 (ja) |
CN (1) | CN100492825C (ja) |
DE (1) | DE602004016493D1 (ja) |
TW (1) | TWI268036B (ja) |
WO (1) | WO2005013463A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112007003556T5 (de) | 2007-06-20 | 2010-05-20 | Harmonic Drive Systems Inc. | Motor mit Schneidwerkzeug-Befestigungsöffnung |
JP2011098421A (ja) * | 2009-11-06 | 2011-05-19 | Hitachi Koki Co Ltd | 電動工具 |
JP2011098420A (ja) * | 2009-11-06 | 2011-05-19 | Hitachi Koki Co Ltd | 卓上切断機 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006015065A1 (de) * | 2006-03-31 | 2007-10-18 | Siemens Ag | Einbaumotor, insbesondere Einbau-Torquemotor |
DE102006054267A1 (de) | 2006-11-17 | 2008-05-21 | Festool Gmbh | Handwerkzeugmaschine mit bürstenlosem Motor |
JP5663858B2 (ja) * | 2009-11-06 | 2015-02-04 | 日立工機株式会社 | 携帯研磨機 |
DE112011101735B4 (de) * | 2010-05-21 | 2021-01-14 | Harmonic Drive Systems Inc. | Abgedichtete Rotationsausgabeeinheit und abgedichtete Motoranordnung |
US9281736B2 (en) | 2013-03-23 | 2016-03-08 | The Boeing Company | Virtual ellipse motor |
AR098148A1 (es) | 2014-05-22 | 2016-05-04 | Alberto Gentili Jorge | Dispositivo distribuidor de semillas por accionamiento directo |
CN106329864A (zh) * | 2015-07-09 | 2017-01-11 | 上海航天有线电厂有限公司 | 一种消旋平台的永磁同步消旋电机 |
EP4183031A1 (en) * | 2020-07-20 | 2023-05-24 | Milwaukee Electric Tool Corporation | Electric motor bearing assembly and method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11206077A (ja) * | 1998-01-16 | 1999-07-30 | Shibaura Mechatronics Corp | 扁平形ブラシレス直流モータ |
JPH11266559A (ja) * | 1998-03-16 | 1999-09-28 | Tks:Kk | 扁平コアレスモータ |
JP2002243000A (ja) * | 2001-02-19 | 2002-08-28 | Harmonic Drive Syst Ind Co Ltd | 波動歯車減速機を備えたアクチュエータ |
Family Cites Families (10)
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US2364599A (en) * | 1943-05-15 | 1944-12-12 | American Aircraft Associates | Attaching means |
US3469124A (en) * | 1968-04-15 | 1969-09-23 | Frederick Preston Willcox | Multistage impulse-operated rotary stepping motor |
US4125790A (en) * | 1977-04-04 | 1978-11-14 | Dresser Industries, Inc. | Magnetic mechanical disconnect |
JPH0354352A (ja) | 1989-07-21 | 1991-03-08 | Toyota Motor Corp | Lpgエンジンの空燃比制御装置におけるアイドル診断装置 |
JPH0526611A (ja) * | 1991-07-25 | 1993-02-02 | Matsushita Electric Ind Co Ltd | パルス発生装置 |
JP3052304B2 (ja) * | 1995-11-17 | 2000-06-12 | 日本精機株式会社 | ステッピングモータ |
US5614775A (en) * | 1995-12-18 | 1997-03-25 | Siemens Electric Limited | Two-speed direct-current motor with high-speed rotation switch activated by a vehicle sensed parameter signal |
US5982063A (en) * | 1997-12-18 | 1999-11-09 | Unique Mobility, Inc. | Electric motor with internal brake |
JP3159202B2 (ja) * | 1999-03-15 | 2001-04-23 | 松下電器産業株式会社 | 偏平振動モータ |
JP2001086724A (ja) * | 1999-09-14 | 2001-03-30 | Matsushita Electric Ind Co Ltd | 磁気センサー付きステッピングモータ |
-
2004
- 2004-07-01 TW TW093119897A patent/TWI268036B/zh active
- 2004-07-14 DE DE602004016493T patent/DE602004016493D1/de active Active
- 2004-07-14 KR KR1020057002602A patent/KR101027839B1/ko active IP Right Grant
- 2004-07-14 WO PCT/JP2004/010011 patent/WO2005013463A1/ja active IP Right Grant
- 2004-07-14 JP JP2005512466A patent/JP4119452B2/ja active Active
- 2004-07-14 US US10/529,188 patent/US7462967B2/en active Active
- 2004-07-14 EP EP04747477A patent/EP1628387B1/en active Active
- 2004-07-14 CN CNB2004800007518A patent/CN100492825C/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11206077A (ja) * | 1998-01-16 | 1999-07-30 | Shibaura Mechatronics Corp | 扁平形ブラシレス直流モータ |
JPH11266559A (ja) * | 1998-03-16 | 1999-09-28 | Tks:Kk | 扁平コアレスモータ |
JP2002243000A (ja) * | 2001-02-19 | 2002-08-28 | Harmonic Drive Syst Ind Co Ltd | 波動歯車減速機を備えたアクチュエータ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1628387A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112007003556T5 (de) | 2007-06-20 | 2010-05-20 | Harmonic Drive Systems Inc. | Motor mit Schneidwerkzeug-Befestigungsöffnung |
US8136817B2 (en) | 2007-06-20 | 2012-03-20 | Harmonic Drive Systems Inc. | Motor with cutting tool mounting hole |
JP2011098421A (ja) * | 2009-11-06 | 2011-05-19 | Hitachi Koki Co Ltd | 電動工具 |
JP2011098420A (ja) * | 2009-11-06 | 2011-05-19 | Hitachi Koki Co Ltd | 卓上切断機 |
Also Published As
Publication number | Publication date |
---|---|
CN100492825C (zh) | 2009-05-27 |
EP1628387A4 (en) | 2007-06-13 |
CN1701493A (zh) | 2005-11-23 |
EP1628387A1 (en) | 2006-02-22 |
KR101027839B1 (ko) | 2011-04-07 |
JPWO2005013463A1 (ja) | 2006-09-28 |
DE602004016493D1 (de) | 2008-10-23 |
EP1628387B1 (en) | 2008-09-10 |
TW200507412A (en) | 2005-02-16 |
US20060163955A1 (en) | 2006-07-27 |
US7462967B2 (en) | 2008-12-09 |
TWI268036B (en) | 2006-12-01 |
KR20060121650A (ko) | 2006-11-29 |
JP4119452B2 (ja) | 2008-07-16 |
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