WO2017033347A1 - Method for fabricating stepping motor - Google Patents

Method for fabricating stepping motor Download PDF

Info

Publication number
WO2017033347A1
WO2017033347A1 PCT/JP2016/000760 JP2016000760W WO2017033347A1 WO 2017033347 A1 WO2017033347 A1 WO 2017033347A1 JP 2016000760 W JP2016000760 W JP 2016000760W WO 2017033347 A1 WO2017033347 A1 WO 2017033347A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
holding torque
rotor
step motor
stator member
Prior art date
Application number
PCT/JP2016/000760
Other languages
French (fr)
Japanese (ja)
Inventor
則雄 宮内
Original Assignee
則雄 宮内
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 則雄 宮内 filed Critical 則雄 宮内
Priority to CH01264/17A priority Critical patent/CH712707B1/en
Publication of WO2017033347A1 publication Critical patent/WO2017033347A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
    • 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

Definitions

  • the present invention relates to a method for machining a rotor hole of a stator of a step motor.
  • FIG. 5 shows a plan view (a) and a cross-sectional view AA of a conventional first stepping motor (A).
  • the conventional first stepping motor 15 applies a holding torque consisting of steps 5a and 5b to the outer periphery of the rotor 2 composed of a two-pole permanent magnet 2a and the rotor hole 2b into which the rotor 2 enters.
  • the stator 5 includes an integral plate-like stator 35 that is magnetically coupled to the rotor 2 and a coil 4 fixed to the stator 35.
  • the stator 35 has a structure 5 that generates the holding torque.
  • the holding torque portion 35a whose outer periphery is a perfect circle 6c, shown by hatching, and the yoke portion 35b excluding the holding torque portion 35a are included. Further, in the AA sectional view (b), the holding torque portion 35a is located at the center in the thickness t direction of the yoke portion 35b, and the thickness t0 of the holding torque portion is smaller than the thickness t of the yoke portion.
  • the stator 35 has a structure in which a stator member 75 having a holding torque portion 35a and having a thickness t0 is sandwiched by stator members 74 and 76 having a thickness t1 without the holding torque portion 35a in the thickness direction. Yes.
  • FIG. 7 shows a processing procedure of the rotor hole of the stator of the conventional first step motor.
  • a processing procedure for the rotor hole of the stator of the conventional first step motor will be described with reference to FIG.
  • a-2 For the stator members 71 and 73 shown in FIGS. (A-1) and (a-3), as shown in FIGS. (B-1) and (b-3), a hole of a perfect circle 6c is pressed. Then, the stator members 74 and 76 are manufactured. As shown in FIG.
  • the structure 5 for generating the holding torque is provided on the rectangular stator member 72 having a thickness t1 shown in FIG.
  • the stator member 75 is manufactured by pressing.
  • the stator member 75 is sandwiched between the stator members 74 and 76 to manufacture the stator 35.
  • FIG. 6 shows a plan view (a) and a BB sectional view (b) of a conventional second step motor.
  • the conventional second stepping motor 16 applies a holding torque consisting of notches 15a and 15b to the outer periphery of the rotor 2 consisting of a permanent magnet 2a having two poles and the rotor hole 2c into which the rotor 2 enters.
  • the stator 15 includes an integral plate-like stator 36 that is magnetically coupled to the rotor 2, and the coil 4 fixed to the stator 36, and the stator 36 generates the holding torque. Including a holding torque portion 36a whose outer periphery is a perfect circle 16c, and a yoke portion 36b excluding the holding torque portion.
  • the holding torque portion 36a is located at the center in the thickness t direction of the yoke portion 36b, and the thickness t0 of the holding torque portion is smaller than the thickness t of the yoke portion.
  • the stator 36 has a structure in which a stator member 85 having a holding torque portion 36a and having a thickness t0 is sandwiched by stator members 84 and 86 having a thickness t1 without the holding torque portion 36a in the thickness direction. Yes.
  • FIG. 8 shows a processing procedure of a rotor hole of a stator of a conventional second step motor.
  • the processing procedure for the rotor hole of the stator of the conventional second step motor will be described.
  • a hole of a perfect circle 16c is pressed. Then, the stator members 84 and 86 are manufactured.
  • a rectangular stator member 82 having a thickness t1 shown in FIG. (A-2) is pressed with a structure 15 having notches 15a and 15b, which generates the holding torque, as shown in FIG. (B-2).
  • the stator member 85 is manufactured by processing.
  • the stator member 85 is sandwiched between the stator members 84 and 86 to manufacture the stator 36.
  • the rotor is composed of a two-pole permanent magnet, a rotor hole into which the rotor enters, an integral plate-like stator magnetically coupled to the rotor, and a coil fixed to the stator.
  • the stator has a structure for generating a holding torque, and the stator includes a holding torque part including a structure for generating the holding torque and a yoke part excluding the holding torque part, and is thinner than the thickness of the yoke part.
  • the holding torque portion is formed by pressing a stator member, and the holding torque portion is formed by cutting the stator member with a milling machine.
  • the rotor hole is formed by press working of the stator member, and then one side of the holding torque portion in the thickness direction is formed by cutting from that direction side of the stator member, and then the thickness of the holding torque portion.
  • the other side of the direction is formed by cutting from that direction side of the stator member, or one side of the holding torque portion in the thickness direction is formed by cutting from the direction side of the stator member,
  • the rotor hole is formed by pressing the stator member, and the other side in the thickness direction of the holding torque portion is formed by cutting from the direction side of the stator member.
  • stator rotor hole machining method of the present invention a structure that generates a perfect circle and holding torque is manufactured by machining a series of stator members, so that variation in holding torque of the step motor can be suppressed. It is possible to produce a high-performance step motor stably.
  • FIG. 2A is a plan view of a first step motor according to the present invention, and FIG. They are a top view (a) and a BB sectional view (b) of a second step motor according to the present invention. It is a processing procedure of the rotor hole of the 1st stator of the 1st step motor concerning the present invention. It is a processing procedure of the rotor hole of the 1st stator of the 2nd step motor concerning the present invention.
  • FIG. 2A is a plan view of a conventional first step motor and FIG. FIG. 6 is a plan view (a) and a BB cross-sectional view (b) of a conventional second step motor. It is a processing procedure of the rotor hole of the stator of the conventional first step motor.
  • FIG. 1 shows a plan view (a) and a cross-sectional view AA of a first step motor according to the present invention.
  • a first stepping motor 1 according to the present invention has a structure 2 for generating a holding torque consisting of steps 5a and 5b on the outer circumference of a rotor 2 consisting of a two-pole permanent magnet 2a and a rotor hole 2b into which the rotor 2 enters.
  • a holding torque portion including an integral plate-like stator 3 magnetically coupled to the rotor 2 and a coil 4 fixed to the stator 3, and the stator 3 including a structure 5 for generating the holding torque.
  • 3a and a yoke portion 3b excluding the holding torque portion 3a.
  • the holding torque portion 3a is located at the center of the yoke portion 3b in the thickness t direction,
  • the thickness t0 of the holding torque portion 3a is a step motor thinner than the thickness t of the yoke portion 3.
  • the procedure for processing the rotor holes of the first stator of the first step motor according to the present invention is as follows. explain.
  • the stator member 31 shown in FIG. (A) is subjected to press processing of the rotor hole, and the stator member 32 having the steps 5a and 5b and having the structure 5 for generating the holding torque shown in FIG.
  • the stator member 32 is manufactured by cutting the stator member 32 into a perfect circle 6c by a milling machine from one side in the thickness direction by a milling machine. .
  • a milling machine is used to cut the perfect circle 6c by a depth t1 to produce the stator 3 shown in FIG.
  • the processing procedure of the rotor hole of the second stator of the first step motor according to the present invention is as follows. explain.
  • the stator member 91 shown in FIG. (A) is cut to a perfect circle 6c by a milling machine from one side in the thickness direction by a milling machine to produce the stator member 92 shown in FIG. (B).
  • the rotor hole is pressed to produce a stator member 93 having steps 5a and 5b and having a structure 5 for generating a holding torque.
  • a perfect circle 6c is cut by a milling machine by a depth t1, and the stator 3 shown in FIG.
  • FIG. 2 shows a plan view (a) and a BB sectional view (b) of a second step motor according to the present invention.
  • a second step motor 11 according to the present invention has a rotor 2 composed of a two-pole permanent magnet 2a and a structure 15 for generating a holding torque composed of notches 15a and 15b on the outer periphery of a rotor hole 2c into which the rotor 2 is inserted.
  • a holding torque portion including an integral plate-like stator 13 magnetically coupled to the rotor 2 and a coil 4 fixed to the stator 13, and the stator 13 including a structure 15 for generating the holding torque. 13a and a yoke portion 13b excluding the holding torque portion 13a.
  • the holding torque portion 13a is a step motor whose thickness t0 is thinner than the thickness t of the yoke portion 13.
  • stator member 41 shown in FIG. 1 (a) is pressed into the rotor hole, and the stator member 42 having the notches 15a and 15b and the structure 15 for generating the holding torque shown in FIG.
  • the stator member 42 is manufactured by cutting the stator member 42 to a perfect circle 16c by a milling machine from one side in the thickness direction by a milling machine.
  • the stator 13 is manufactured by cutting the perfect circle 16c by a milling machine to a depth of t1.
  • the processing procedure of the rotor hole of the second stator of the second step motor according to the present invention is shown in FIG. 10 using the processing procedure of the rotor hole of the second stator of the second step motor according to the present invention.
  • the stator member 101 shown in FIG. 1 (a) is cut into a perfect circle 16c by a milling machine from one side in the thickness direction by a milling machine, and the stator member 102 shown in FIG. 1 (b) is manufactured. To do.
  • the stator member 102 is manufactured by pressing the rotor hole with respect to the stator member 102 and having a structure 15 including the steps 15a and 15b and generating the holding torque shown in FIG.
  • a milling machine is used to cut the perfect circle 16c by a depth t1 to produce the stator 13 shown in FIG.
  • the thickness t of the stator member is 500 microns.
  • the torque portion thickness t0 is 50 microns
  • the stator member is cut into a perfect circle from both sides in the thickness direction of the stator member by a milling machine, and the holding torque portion thickness t0 is 50.
  • the processing procedure for forming a structure that generates holding torque by pressing after micronization since the thickness t0 of the holding torque part is as thin as 50 microns, the holding force is applied by the pulling force in the thickness direction during pressing. Since the torque portion is bent in the pressing direction, this processing procedure cannot be used for rotor hole processing of the stator.
  • the material cost of the stator material is lower than that of a conventional method of processing a rotor hole of a stator of a step motor. Further, since the holding torque, which is an important function of the step motor, can be made uniform, the method for processing the rotor hole of the stator of the step motor can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Provided is a method for fabricating a stepping motor. The stepping motor comprises a rotor comprising a permanent magnet having two poles, an integrated and plate-shaped stator having a rotor hole into which the rotor is inserted and magnetically coupled to the rotor, and a coil fixed to the stator. The rotor hole has a structure on a periphery thereof for generating a holding torque. The stator comprises a holding torque portion including the structure for generating the holding torque, and a yoke portion excluding the holding torque portion. The holding torque portion, which is thinner than the thickness of the yoke portion, is positioned at the center in the thickness direction of the yoke portion. In the stepping motor, the rotor hole is formed by press working of a stator member, and the holding torque portion is formed by cutting of the stator member by using a milling machine.

Description

ステップモータの加工方法Step motor processing method
本発明は、ステップモータのステータのロータ穴の加工方法に関する。 The present invention relates to a method for machining a rotor hole of a stator of a step motor.
まず、従来のステップモータの構造について説明する。 First, the structure of a conventional step motor will be described.
図５に、従来の第１のステップモータの平面図（ａ）とＡ－Ａ断面図（ｂ）を示す。平面図（ａ）において、従来の第１のステップモータ１５は、２極の永久磁石２ａから成るロータ２と、該ロータ２が入るロータ穴２ｂの外周に、段差５ａと５ｂからなる保持トルクを生ぜしめる構造５を有し該ロータ２に磁気結合する一体で板状のステータ３５と、該ステータ３５に固定されたコイル４から成り、また、前記ステータ３５は前記保持トルクを生ぜしめる構造５を含む、斜線で示した、外周が真円６ｃである保持トルク部３５ａと該保持トルク部３５ａを除くヨーク部３５ｂから成っている。
さらに、Ａ－Ａ断面図（ｂ）において、該保持トルク部３５ａは該ヨーク部３５ｂの厚みｔ方向の中心に位置し、かつ、該保持トルク部の厚みｔ０は該ヨーク部の厚みｔより薄く、前記ステータ３５は、該保持トルク部３５ａを有する、厚みｔ０のステータ部材７５が、厚み方向から、該保持トルク部３５ａのない、厚みｔ１のステータ部材７４，７６でサンドイッチされた構造となっている。 FIG. 5 shows a plan view (a) and a cross-sectional view AA of a conventional first stepping motor (A). In the plan view (a), the conventional first stepping motor 15 applies a holding torque consisting of steps 5a and 5b to the outer periphery of the rotor 2 composed of a two-pole permanent magnet 2a and the rotor hole 2b into which the rotor 2 enters. The stator 5 includes an integral plate-like stator 35 that is magnetically coupled to the rotor 2 and a coil 4 fixed to the stator 35. The stator 35 has a structure 5 that generates the holding torque. The holding torque portion 35a, whose outer periphery is a perfect circle 6c, shown by hatching, and the yoke portion 35b excluding the holding torque portion 35a are included.
Further, in the AA sectional view (b), the holding torque portion 35a is located at the center in the thickness t direction of the yoke portion 35b, and the thickness t0 of the holding torque portion is smaller than the thickness t of the yoke portion. The stator 35 has a structure in which a stator member 75 having a holding torque portion 35a and having a thickness t0 is sandwiched by stator members 74 and 76 having a thickness t1 without the holding torque portion 35a in the thickness direction. Yes.
図７は、従来の第１のステップモータのステータのロータ穴の加工手順を示す。図７を使って、該従来の第１のステップモータのステータのロータ穴の加工手順を説明する。図（ａ－１）と図（ａ－３）に示す、厚みがｔ１の矩形のステータ部材７１，７３をそれぞれ１枚、図（ａ－２）に示す、厚みがｔ０の矩形のステータ部材７２を１枚用意する。図（ａ－１）と図（ａ－３）に示すステータ部材７１，７３に対して、図（ｂ－１）と図（ｂ－３）に示すように、真円６ｃの穴をプレス加工し、ステータ部材７４、７６を製作する。図（ａ－２）に示す、厚みがｔ１の矩形のステータ部材７２に対して、図（ｂ－２）に示すように、段差５ａと段差５ｂを有する、前記保持トルクを生ぜしめる構造５をプレス加工し、ステータ部材７５を製作する。つぎに、図（ｃ）に示すように、該ステータ部材７５を、前記ステータ部材７４と７６でサンドイッチして、ステータ３５を製作する。 FIG. 7 shows a processing procedure of the rotor hole of the stator of the conventional first step motor. A processing procedure for the rotor hole of the stator of the conventional first step motor will be described with reference to FIG. One rectangular stator member 71 and 73 having a thickness t1 shown in FIGS. 1 (a-1) and 1 (a-3), respectively, and a rectangular stator member 72 having a thickness t0 shown in FIG. 2 (a-2). Prepare one sheet. For the stator members 71 and 73 shown in FIGS. (A-1) and (a-3), as shown in FIGS. (B-1) and (b-3), a hole of a perfect circle 6c is pressed. Then, the stator members 74 and 76 are manufactured. As shown in FIG. 2B-2, the structure 5 for generating the holding torque is provided on the rectangular stator member 72 having a thickness t1 shown in FIG. The stator member 75 is manufactured by pressing. Next, as shown in FIG. 2C, the stator member 75 is sandwiched between the stator members 74 and 76 to manufacture the stator 35.
図６に、従来の第２のステップモータの平面図（ａ）とＢ－Ｂ断面図（ｂ）を示す。平面図（ａ）において、従来の第２のステップモータ１６は、２極の永久磁石２ａから成るロータ２と、該ロータ２が入るロータ穴２ｃの外周に、ノッチ１５ａと１５ｂからなる保持トルクを生ぜしめる構造１５を有し該ロータ２に磁気結合する一体で板状のステータ３６と、該ステータ３６に固定されたコイル４から成り、また、前記ステータ３６は、前記保持トルクを生ぜしめる構造１５を含む、斜線で示した、外周が真円１６ｃである保持トルク部３６ａと該保持トルク部を除くヨーク部３６ｂから成っている。
さらに、Ｂ－Ｂ断面図（ｂ）において、該保持トルク部３６ａは該ヨーク部３６ｂの厚みｔ方向の中心に位置し、かつ、該保持トルク部の厚みｔ０は該ヨーク部の厚みｔより薄く、前記ステータ３６は、該保持トルク部３６ａを有する、厚みｔ０のステータ部材８５が、厚み方向から、該保持トルク部３６ａのない、厚みｔ１のステータ部材８４，８６でサンドイッチされた構造となっている。 FIG. 6 shows a plan view (a) and a BB sectional view (b) of a conventional second step motor. In the plan view (a), the conventional second stepping motor 16 applies a holding torque consisting of notches 15a and 15b to the outer periphery of the rotor 2 consisting of a permanent magnet 2a having two poles and the rotor hole 2c into which the rotor 2 enters. The stator 15 includes an integral plate-like stator 36 that is magnetically coupled to the rotor 2, and the coil 4 fixed to the stator 36, and the stator 36 generates the holding torque. Including a holding torque portion 36a whose outer periphery is a perfect circle 16c, and a yoke portion 36b excluding the holding torque portion.
Further, in the cross-sectional view (b) taken along the line BB, the holding torque portion 36a is located at the center in the thickness t direction of the yoke portion 36b, and the thickness t0 of the holding torque portion is smaller than the thickness t of the yoke portion. The stator 36 has a structure in which a stator member 85 having a holding torque portion 36a and having a thickness t0 is sandwiched by stator members 84 and 86 having a thickness t1 without the holding torque portion 36a in the thickness direction. Yes.
図８は、従来の第２のステップモータのステータのロータ穴の加工手順を示す。図８を使って、該従来の第２のステップモータのステータのロータ穴の加工手順を説明する。図（ａ－１）と図（ａ－３）に示す、厚みがｔ１の矩形のステータ部材８１，８３をそれぞれ１枚、図（ａ－２）に示す、厚みがｔ０の矩形のステータ部材８２を１枚用意する。図（ａ－１）と図（ａ－３）に示すステータ部材８１，８３に対して、図（ｂ－１）と図（ｂ－３）に示すように、真円１６ｃの穴をプレス加工し、ステータ部材８４、８６を製作する。図（ａ－２）に示す、厚みｔ１の矩形のステータ部材８２に対して、図（ｂ－２）に示すように、ノッチ１５ａとノッチ１５ｂを有する、前記保持トルクを生ぜしめる構造１５をプレス加工し、ステータ部材８５を製作する。つぎに、図（ｃ）に示すように、該ステータ部材８５を、前記ステータ部材８４と８６でサンドイッチして、ステータ３６を製作する。 FIG. 8 shows a processing procedure of a rotor hole of a stator of a conventional second step motor. With reference to FIG. 8, the processing procedure for the rotor hole of the stator of the conventional second step motor will be described. One rectangular stator member 81, 83 having a thickness of t1 shown in FIGS. (A-1) and (a-3), respectively, and a rectangular stator member 82 having a thickness of t0, shown in FIG. (A-2). Prepare one sheet. For the stator members 81 and 83 shown in FIGS. (A-1) and (a-3), as shown in FIGS. (B-1) and (b-3), a hole of a perfect circle 16c is pressed. Then, the stator members 84 and 86 are manufactured. A rectangular stator member 82 having a thickness t1 shown in FIG. (A-2) is pressed with a structure 15 having notches 15a and 15b, which generates the holding torque, as shown in FIG. (B-2). The stator member 85 is manufactured by processing. Next, as shown in FIG. 3C, the stator member 85 is sandwiched between the stator members 84 and 86 to manufacture the stator 36.
特開平１０－２８３６７JP-A-10-28367 特開２００１－１７８１０７JP 2001-178107 A
しかしながら、従来の、第１と第２のステップモータのステータのロータ穴の加工方法には２つの問題があった。
１つは、厚みの異なる２つのブランク材を用意しなければならなかったので、材料のコストアップとなっていた。
もう１つは、ステータ部材７５をステータ部材７４と７６でサンドイッチする時に、真円６ｃと保持トルクを生ぜしめる構造５との平面的な位置誤差が発生し、ステップモータの保持トルクのばらつきを発生していた。あるいは、ステータ部材８５をステータ部材８４と８６でサンドイッチする時に、真円１６ｃと保持トルクを生ぜしめる構造１５との平面的な位置誤差が発生し、ステップモータの保持トルクのばらつきを発生していた。 However, there are two problems in the conventional method of processing the rotor hole of the stator of the first and second step motors.
One was the increase in material costs because two blanks with different thickness had to be prepared.
The other is that when the stator member 75 is sandwiched between the stator members 74 and 76, a planar position error between the perfect circle 6c and the structure 5 that generates the holding torque occurs, and the holding torque of the step motor varies. Was. Alternatively, when the stator member 85 is sandwiched between the stator members 84 and 86, a planar position error between the perfect circle 16c and the structure 15 that generates the holding torque occurs, and the holding torque of the step motor varies. .
２極の永久磁石から成るロータと、該ロータが入るロータ穴を有し、該ロータに磁気結合する一体で板状のステータと、該ステータに固定されたコイルから成り、また、該ロータ穴は、その外周に保持トルクを生ぜしめる構造を有し、該ステータは該保持トルクを生ぜしめる構造を含む保持トルク部と該保持トルク部を除くヨーク部から成り、さらに、該ヨーク部の厚みより薄い該保持トルク部は該ヨーク部の厚み方向の中心に位置するステップモータにおいて、前記ロータ穴はステータ部材のプレス加工によって成形され、前記保持トルク部はステータ部材のフライス盤による切削加工によって成形される。 The rotor is composed of a two-pole permanent magnet, a rotor hole into which the rotor enters, an integral plate-like stator magnetically coupled to the rotor, and a coil fixed to the stator. The stator has a structure for generating a holding torque, and the stator includes a holding torque part including a structure for generating the holding torque and a yoke part excluding the holding torque part, and is thinner than the thickness of the yoke part. In the step motor positioned at the center of the yoke portion in the thickness direction, the holding torque portion is formed by pressing a stator member, and the holding torque portion is formed by cutting the stator member with a milling machine.
前記ロータ穴はステータ部材のプレス加工によって成形され、次に、前記保持トルク部の厚み方向の一方側は前記ステータ部材のその方向側から切削加工によって成形され、次に、該保持トルク部の厚み方向のもう一方側は該ステータ部材のその方向側から切削加工によって成形される、あるいは、該保持トルク部の厚み方向の一方側は前記ステータ部材のその方向側から切削加工によって成形され、次に、該ロータ穴は該ステータ部材のプレス加工によって成形され、次に、該保持トルク部の厚み方向のもう一方側は該ステータ部材のその方向側から切削加工によって成形される。 The rotor hole is formed by press working of the stator member, and then one side of the holding torque portion in the thickness direction is formed by cutting from that direction side of the stator member, and then the thickness of the holding torque portion. The other side of the direction is formed by cutting from that direction side of the stator member, or one side of the holding torque portion in the thickness direction is formed by cutting from the direction side of the stator member, The rotor hole is formed by pressing the stator member, and the other side in the thickness direction of the holding torque portion is formed by cutting from the direction side of the stator member.
同じ厚みのブランク材を加工するので、材料のコストを削減できる効果がある。また、本発明のステータのロータ穴の加工方法においては、真円と保持トルクを生ぜしめる構造を、一連のステータ部材を加工することによって製作するので、ステップモータの保持トルクのばらつきを抑えることができ、高性能のステップモータを安定して生産できる効果がある。 Since blank materials having the same thickness are processed, there is an effect that the cost of the material can be reduced. Further, in the stator rotor hole machining method of the present invention, a structure that generates a perfect circle and holding torque is manufactured by machining a series of stator members, so that variation in holding torque of the step motor can be suppressed. It is possible to produce a high-performance step motor stably.
本発明に係わる第１のステップモータの平面図（ａ）とＡ－Ａ断面図（ｂ）である。2A is a plan view of a first step motor according to the present invention, and FIG. 本発明に係わる第２のステップモータの平面図（ａ）とＢ－Ｂ断面図（ｂ）である。They are a top view (a) and a BB sectional view (b) of a second step motor according to the present invention. 本発明に係わる第１のステップモータの第１のステータのロータ穴の加工手順である。It is a processing procedure of the rotor hole of the 1st stator of the 1st step motor concerning the present invention. 本発明に係わる第２のステップモータの第１のステータのロータ穴の加工手順である。It is a processing procedure of the rotor hole of the 1st stator of the 2nd step motor concerning the present invention. 従来の第１のステップモータの平面図（ａ）とＡ－Ａ断面図（ｂ）である。FIG. 2A is a plan view of a conventional first step motor and FIG. 従来の第２のステップモータの平面図（ａ）とＢ－Ｂ断面図（ｂ）である。FIG. 6 is a plan view (a) and a BB cross-sectional view (b) of a conventional second step motor. 従来の第１のステップモータのステータのロータ穴の加工手順である。It is a processing procedure of the rotor hole of the stator of the conventional first step motor. 従来の第２のステップモータのステータのロータ穴の加工手順である。It is a processing procedure of the rotor hole of the stator of the conventional 2nd step motor. 本発明に係わる第１のステップモータの第２のステータのロータ穴の加工手順である。It is a processing procedure of the rotor hole of the 2nd stator of the 1st step motor concerning the present invention. 本発明に係わる第２のステップモータの第２のステータのロータ穴の加工手順である。It is a processing procedure of the rotor hole of the 2nd stator of the 2nd step motor concerning the present invention.
以下、本発明の実施の形態を図面に基づいて詳述する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
図１に本発明に係わる第１のステップモータの平面図（ａ）とＡ－Ａ断面図（ｂ）を示す。本発明に係わる第１のステップモータ１は、２極の永久磁石２ａから成るロータ２と、該ロータ２が入るロータ穴２ｂの外周に、段差５ａと５ｂからなる保持トルクを生ぜしめる構造５を有し、該ロータ２に磁気結合する一体で板状のステータ３と、該ステータ３に固定されたコイル４から成り、また、前記ステータ３は前記保持トルクを生ぜしめる構造５を含む保持トルク部３ａと該保持トルク部３ａを除くヨーク部３ｂから成り、さらに、Ａ－Ａ断面図（ｂ）に示すように、該保持トルク部３ａは該ヨーク部３ｂの厚みｔ方向の中心に位置し、かつ、該保持トルク部３ａの厚みｔ０は該ヨーク部３の厚みｔより薄いステップモータである。 FIG. 1 shows a plan view (a) and a cross-sectional view AA of a first step motor according to the present invention. A first stepping motor 1 according to the present invention has a structure 2 for generating a holding torque consisting of steps 5a and 5b on the outer circumference of a rotor 2 consisting of a two-pole permanent magnet 2a and a rotor hole 2b into which the rotor 2 enters. A holding torque portion including an integral plate-like stator 3 magnetically coupled to the rotor 2 and a coil 4 fixed to the stator 3, and the stator 3 including a structure 5 for generating the holding torque. 3a and a yoke portion 3b excluding the holding torque portion 3a. Further, as shown in the AA sectional view (b), the holding torque portion 3a is located at the center of the yoke portion 3b in the thickness t direction, In addition, the thickness t0 of the holding torque portion 3a is a step motor thinner than the thickness t of the yoke portion 3.
図３に示す、本発明に係わる第１のステップモータの第１のステータのロータ穴の加工手順を使って、本発明に係わる第１のステップモータの第１のステータのロータ穴の加工手順を説明する。図（ａ）に示す、ステータ部材３１にロータ穴のプレス加工を行い、図（ｂ）に示す、段差５ａ，５ｂを有する、保持トルクを生ぜしめる構造５を有するステータ部材３２を製作する。次に、図（ｃ）に示すように、該ステータ部材３２に対して、その厚み方向の一方側からフライス盤によって、深さがｔ１だけ真円６ｃの切削加工を行い、ステータ部材３３を製作する。次に、該ステータ部材３３の厚み方向のもう一方側から、フライス盤によって、深さがｔ１だけ真円６ｃの切削加工を行い、図（ｄ）に示すステータ３を製作する。 Using the procedure for processing the rotor holes of the first stator of the first step motor according to the present invention shown in FIG. 3, the procedure for processing the rotor holes of the first stator of the first step motor according to the present invention is as follows. explain. The stator member 31 shown in FIG. (A) is subjected to press processing of the rotor hole, and the stator member 32 having the steps 5a and 5b and having the structure 5 for generating the holding torque shown in FIG. Next, as shown in FIG. 3C, the stator member 32 is manufactured by cutting the stator member 32 into a perfect circle 6c by a milling machine from one side in the thickness direction by a milling machine. . Next, from the other side in the thickness direction of the stator member 33, a milling machine is used to cut the perfect circle 6c by a depth t1 to produce the stator 3 shown in FIG.
図９に示す、本発明に係わる第１のステップモータの第２のステータのロータ穴の加工手順を使って、本発明に係わる第１のステップモータの第２のステータのロータ穴の加工手順を説明する。図（ａ）に示す、ステータ部材９１に、その厚み方向の一方側からフライス盤によって、深さがｔ１だけ真円６ｃの切削加工を行い、図（ｂ）に示す、ステータ部材９２を製作する。次に、図（ｃ）に示すように、ロータ穴のプレス加工を行い、段差５ａ，５ｂを有する、保持トルクを生ぜしめる構造５を有するステータ部材９３を製作し、該ステータ部材９３に対して、その厚み方向のもう一方側からフライス盤によって、深さがｔ１だけ真円６ｃの切削加工を行い、図（ｄ）に示すステータ３を製作する。 Using the processing procedure of the rotor hole of the second stator of the first step motor according to the present invention shown in FIG. 9, the processing procedure of the rotor hole of the second stator of the first step motor according to the present invention is as follows. explain. The stator member 91 shown in FIG. (A) is cut to a perfect circle 6c by a milling machine from one side in the thickness direction by a milling machine to produce the stator member 92 shown in FIG. (B). Next, as shown in FIG. 3C, the rotor hole is pressed to produce a stator member 93 having steps 5a and 5b and having a structure 5 for generating a holding torque. From the other side in the thickness direction, a perfect circle 6c is cut by a milling machine by a depth t1, and the stator 3 shown in FIG.
図２に本発明に係わる第２のステップモータの平面図（ａ）とＢ－Ｂ断面図（ｂ）を示す。本発明に係わる第２のステップモータ１１は、２極の永久磁石２ａから成るロータ２と、該ロータ２が入るロータ穴２ｃの外周に、ノッチ１５ａと１５ｂからなる保持トルクを生ぜしめる構造１５を有し、該ロータ２に磁気結合する一体で板状のステータ１３と、該ステータ１３に固定されたコイル４から成り、また、前記ステータ１３は前記保持トルクを生ぜしめる構造１５を含む保持トルク部１３ａと該保持トルク部１３ａを除くヨーク部１３ｂから成り、さらに、Ｂ－Ｂ断面図（ｂ）に示すように、該保持トルク部１３ａは該ヨーク部１３ｂの厚み方向の中心に位置し、かつ、該保持トルク部１３ａの厚みｔ０は該ヨーク部１３の厚みｔより薄いステップモータである。 FIG. 2 shows a plan view (a) and a BB sectional view (b) of a second step motor according to the present invention. A second step motor 11 according to the present invention has a rotor 2 composed of a two-pole permanent magnet 2a and a structure 15 for generating a holding torque composed of notches 15a and 15b on the outer periphery of a rotor hole 2c into which the rotor 2 is inserted. A holding torque portion including an integral plate-like stator 13 magnetically coupled to the rotor 2 and a coil 4 fixed to the stator 13, and the stator 13 including a structure 15 for generating the holding torque. 13a and a yoke portion 13b excluding the holding torque portion 13a. Further, as shown in the sectional view BB in FIG. The holding torque portion 13a is a step motor whose thickness t0 is thinner than the thickness t of the yoke portion 13.
図４に示す、本発明に係わる第２のステップモータの第１のステータのロータ穴の加工手順を使って、本発明に係わる第２のステップモータの第１のステータのロータ穴の加工手順を説明する。図（ａ）に示す、ステータ部材４１にロータ穴のプレス加工を行い、図（ｂ）に示す、ノッチ１５ａ，１５ｂを有する、保持トルクを生ぜしめる構造１５を有するステータ部材４２を製作する。次に、図（ｃ）に示すように、該ステータ部材４２に対して、その厚み方向の一方側からフライス盤によって、深さがｔ１だけ真円１６ｃの切削加工を行い、ステータ部材４３を製作する。次に、該ステータ部材４３の厚み方向のもう一方側から、フライス盤によって、深さがｔ１だけ真円１６ｃの切削加工を行い、ステータ１３を製作する。 Using the procedure for machining the rotor holes of the first stator of the second step motor according to the present invention shown in FIG. 4, the procedure for machining the rotor holes of the first stator of the second step motor according to the present invention will be described. explain. The stator member 41 shown in FIG. 1 (a) is pressed into the rotor hole, and the stator member 42 having the notches 15a and 15b and the structure 15 for generating the holding torque shown in FIG. Next, as shown in FIG. 3C, the stator member 42 is manufactured by cutting the stator member 42 to a perfect circle 16c by a milling machine from one side in the thickness direction by a milling machine. . Next, from the other side in the thickness direction of the stator member 43, the stator 13 is manufactured by cutting the perfect circle 16c by a milling machine to a depth of t1.
図１０に示す、本発明に係わる第２のステップモータの第２のステータのロータ穴の加工手順を使って、本発明に係わる第２のステップモータの第２のステータのロータ穴の加工手順を説明する。図（ａ）に示す、ステータ部材１０１に対して、その厚み方向の一方側からフライス盤によって、深さがｔ１だけ真円１６ｃの切削加工を行い、図（ｂ）に示す、ステータ部材１０２を製作する。次に、該ステータ部材１０２に対して、ロータ穴のプレス加工を行い、図（ｃ）に示す、段差１５ａ，１５ｂからなる、保持トルクを生ぜしめる構造１５を有する、ステータ部材１０３を製作する。次に、該ステータ部材１０３の厚み方向のもう一方側から、フライス盤によって、深さがｔ１だけ真円１６ｃの切削加工を行い、図（ｄ）に示す、ステータ１３を製作する。 The processing procedure of the rotor hole of the second stator of the second step motor according to the present invention is shown in FIG. 10 using the processing procedure of the rotor hole of the second stator of the second step motor according to the present invention. explain. The stator member 101 shown in FIG. 1 (a) is cut into a perfect circle 16c by a milling machine from one side in the thickness direction by a milling machine, and the stator member 102 shown in FIG. 1 (b) is manufactured. To do. Next, the stator member 102 is manufactured by pressing the rotor hole with respect to the stator member 102 and having a structure 15 including the steps 15a and 15b and generating the holding torque shown in FIG. Next, from the other side in the thickness direction of the stator member 103, a milling machine is used to cut the perfect circle 16c by a depth t1 to produce the stator 13 shown in FIG.
図１に示す、本発明に係わる第１のステップモータと図２に示す、本発明に係わる第２のステップモータのステータのロータ穴の加工手順において、ステータ部材の厚みｔが５００ミクロンで、保持トルク部の厚みｔ０が５０ミクロンの場合に、フライス盤によって、該ステータ部材の厚み方向の両方向側から、該ステータ部材に対して、真円の切削加工を行い、該保持トルク部の厚みｔ０を５０ミクロンにした後に、プレス抜きによって保持トルクを生ぜしめる構造を成形しようとする加工手順では、該保持トルク部の厚みｔ０が５０ミクロンと薄いために、プレス時の厚み方向の抜き力によって、該保持トルク部がプレス方向に曲げられてしまうので、この加工手順はステータのロータ穴加工には使用できない。 In the processing procedure of the rotor hole of the stator of the first step motor according to the present invention shown in FIG. 1 and the second step motor according to the present invention shown in FIG. 2, the thickness t of the stator member is 500 microns. When the torque portion thickness t0 is 50 microns, the stator member is cut into a perfect circle from both sides in the thickness direction of the stator member by a milling machine, and the holding torque portion thickness t0 is 50. In the processing procedure for forming a structure that generates holding torque by pressing after micronization, since the thickness t0 of the holding torque part is as thin as 50 microns, the holding force is applied by the pulling force in the thickness direction during pressing. Since the torque portion is bent in the pressing direction, this processing procedure cannot be used for rotor hole processing of the stator.
図１に示す、本発明に係わる第１のステップモータと図２に示す、本発明に係わる第２のステップモータのステータのロータ穴の加工方法において、深さがｔ１の真円の成形と、保持トルクを生ぜしめる構造をすべて、フライス盤による切削加工で行うことは可能であるが、特に、フライス盤による切削加工によって、保持トルクを生ぜしめる段差やノッチを成形するには、かなりの加工時間を要するので、この加工方法は、量産の加工方法としては採用できない。また、保持トルクを生ぜしめる段差やノッチをワイヤ放電加工によって成形することも可能であるが、こちらの加工方法もかなりの加工時間を要するので、量産の加工方法としては採用できない。 In the first stepping motor according to the present invention shown in FIG. 1 and the rotor hole machining method of the second stepping motor according to the present invention shown in FIG. Although it is possible to cut all structures that generate holding torque by cutting with a milling machine, it takes considerable processing time to form steps and notches that generate holding torque, especially by cutting with a milling machine. Therefore, this processing method cannot be adopted as a mass production processing method. In addition, steps and notches that generate holding torque can be formed by wire electric discharge machining, but this machining method also requires considerable machining time, so it cannot be adopted as a mass production machining method.
以上の詳細な説明により示されたように、本発明のステップモータのステータのロータ穴の加工方法によれば、従来のステップモータのステータのロータ穴の加工方法に比べ、ステータ材の材料費を削減でき、さらに、ステップモータの重要な機能である保持トルクをばらつきなくできるので、ステップモータのステータのロータ穴の加工方法に、本発明のステータのロータ穴の加工方法を利用可能である。 As shown in the detailed description above, according to the method of processing a rotor hole of a stator of a step motor of the present invention, the material cost of the stator material is lower than that of a conventional method of processing a rotor hole of a stator of a step motor. Further, since the holding torque, which is an important function of the step motor, can be made uniform, the method for processing the rotor hole of the stator of the step motor can be used.
１　１１　１５　１６　ステップモータ
３　１３　３５　３６　ステータ
２　ロータ
４　コイル
５　１５　保持トルクを生ぜしめる構造
３ａ　１３ａ　３５ａ　３６ａ　保持トルク部
５ａ　５ｂ　段差
１５ａ　１５ｂ　ノッチ 1 11 15 16 Step motor 3 13 35 36 Stator 2 Rotor 4 Coil 5 15 Structure 3a 13a 35a 36a Holding torque portion 5a 5b Step 15a 15b Notch

Claims (2)

  1. ２極の永久磁石から成るロータと、該ロータが入るロータ穴を有し、該ロータに磁気結合する一体で板状のステータと、該ステータに固定されたコイルから成り、また、該ロータ穴は、その外周に保持トルクを生ぜしめる構造を有し、該ステータは該保持トルクを生ぜしめる構造を含む保持トルク部と該保持トルク部を除くヨーク部から成り、さらに、該ヨーク部の厚みより薄い該保持トルク部は該ヨーク部の厚み方向の中心に位置するステップモータにおいて、前記ロータ穴はステータ部材のプレス加工によって成形され、前記保持トルク部はステータ部材のフライス盤による切削加工によって成形されることを特徴とするステップモータの加工方法。 The rotor is composed of a two-pole permanent magnet, a rotor hole into which the rotor enters, an integral plate-like stator magnetically coupled to the rotor, and a coil fixed to the stator. The stator has a structure for generating a holding torque, and the stator includes a holding torque part including a structure for generating the holding torque and a yoke part excluding the holding torque part, and is thinner than the thickness of the yoke part. In the step motor positioned at the center of the yoke portion in the thickness direction, the holding torque portion is formed by pressing the stator member, and the holding torque portion is formed by cutting the stator member with a milling machine. Step motor processing method characterized by the above.
  2. 前記ロータ穴は前記ステータ部材のプレス加工によって成形され、次に、前記保持トルク部の厚み方向の一方側は該ステータ部材のその方向側からの切削加工によって成形され、次に、該保持トルク部の厚み方向のもう一方側は該ステータ部材のその方向側からの切削加工によって成形される、あるいは、該保持トルク部の厚み方向の一方側は前記ステータ部材のその方向側からの切削加工によって成形され、次に、該ロータ穴は該ステータ部材のプレス加工によって成形され、次に、該保持トルク部の厚み方向のもう一方側は該ステータ部材のその方向側からの切削加工によって成形されることを特徴とする請求項１に記載のステップモータの加工方法。 The rotor hole is formed by press working of the stator member, and then one side in the thickness direction of the holding torque portion is formed by cutting from the direction side of the stator member, and then the holding torque portion. The other side in the thickness direction of the stator member is formed by cutting from the direction side of the stator member, or the one side in the thickness direction of the holding torque portion is formed by cutting from the direction side of the stator member. Next, the rotor hole is formed by pressing the stator member, and then the other side of the holding torque portion in the thickness direction is formed by cutting from the direction side of the stator member. The processing method of the step motor of Claim 1 characterized by these.
PCT/JP2016/000760 2015-08-25 2016-02-15 Method for fabricating stepping motor WO2017033347A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH01264/17A CH712707B1 (en) 2015-08-25 2016-02-15 Method for producing a stepping motor.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015165471A JP5854448B1 (en) 2015-08-25 2015-08-25 Step motor processing method
JP2015-165471 2015-08-25

Publications (1)

Publication Number Publication Date
WO2017033347A1 true WO2017033347A1 (en) 2017-03-02

Family

ID=55269154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/000760 WO2017033347A1 (en) 2015-08-25 2016-02-15 Method for fabricating stepping motor

Country Status (3)

Country Link
JP (1) JP5854448B1 (en)
CH (1) CH712707B1 (en)
WO (1) WO2017033347A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7032012B1 (en) * 2021-10-13 2022-03-08 則雄 宮内 Analog electronic clock

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491751A (en) * 1981-04-09 1985-01-01 Moskovsky Energetichesky Institut Single-phase step motor
JPS62181660A (en) * 1986-02-04 1987-08-10 Casio Comput Co Ltd Stepping motor
JPH1028367A (en) * 1996-07-08 1998-01-27 Citizen Watch Co Ltd Stepping motor
JP2001178107A (en) * 1999-12-16 2001-06-29 Citizen Watch Co Ltd Stepping motor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS604660B2 (en) * 1974-11-14 1985-02-05 セイコーインスツルメンツ株式会社 Manufacturing method of stator for electronic watch motor
JPS52147713A (en) * 1976-06-04 1977-12-08 Citizen Watch Co Ltd Stepping motor
JPS57180366A (en) * 1981-04-30 1982-11-06 Citizen Watch Co Ltd Yoke for step motor of timepiece and manufacture thereof
JPS60170430A (en) * 1984-02-10 1985-09-03 Citizen Watch Co Ltd Constrution of stator for step motor for timepiece
JPH0624421B2 (en) * 1985-07-26 1994-03-30 シチズン時計株式会社 Yoke manufacturing method
JPH10204535A (en) * 1997-01-21 1998-08-04 Denso Corp Production of steel parts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491751A (en) * 1981-04-09 1985-01-01 Moskovsky Energetichesky Institut Single-phase step motor
JPS62181660A (en) * 1986-02-04 1987-08-10 Casio Comput Co Ltd Stepping motor
JPH1028367A (en) * 1996-07-08 1998-01-27 Citizen Watch Co Ltd Stepping motor
JP2001178107A (en) * 1999-12-16 2001-06-29 Citizen Watch Co Ltd Stepping motor

Also Published As

Publication number Publication date
CH712707B1 (en) 2018-07-31
JP5854448B1 (en) 2016-02-09
JP2017046393A (en) 2017-03-02

Similar Documents

Publication Publication Date Title
JP6328598B2 (en) Synchronous motor permanent magnet rotor
JP4684677B2 (en) Permanent magnet type motor, permanent magnet type linear motor and method for manufacturing the same
WO2013084614A1 (en) Rotating electric machine and method for manufacturing rotating electric machine
WO2012105006A1 (en) Permanent magnet, motor rotor or stator, dynamo-electric machine
JP2008141859A (en) Laminated core structure for electric motor
JP2015100227A (en) Rotary electric machine rotor
JP6798572B2 (en) Manufacturing method of stator, rotary electric machine, steel plate, and manufacturing method of stator
JP5073805B2 (en) Permanent magnet type motor and permanent magnet type linear motor
JP5808445B2 (en) Rotor for electric motor including magnet attached to outer peripheral surface of rotor core, electric motor, and method for manufacturing electric motor rotor
WO2017033347A1 (en) Method for fabricating stepping motor
US20200204035A1 (en) Electric machine comprising a knurled rotor shaft and method of manufacturing such a machine
JP2015107013A (en) Method for punching iron core piece used for laminated iron core
WO2017104403A1 (en) Core sheet, divided laminated core, stator, and method for manufacturing divided laminated core
JP5528164B2 (en) Stator for rotating electrical machine and method for manufacturing the same
JP5942178B1 (en) Electric motor and electric device including the same
JP6057777B2 (en) Stator, hermetic compressor and rotary machine including the stator, and mold
JP2955804B2 (en) Electric motor laminated iron core
JP2016077149A (en) Rotating electric machine and method for manufacturing rotating electric machine
JP5919629B2 (en) Method for manufacturing permanent magnet rotor
JP6487705B2 (en) Method for manufacturing divided and incompletely divided non-magnetized permanent magnet, and incompletely divided non-magnetized permanent magnet
JP6045638B2 (en) Manufacturing method of laminated iron core
JP3969379B2 (en) Laminated iron core, manufacturing method thereof, and rotating electric machine
JP6164093B2 (en) Method for manufacturing permanent magnet
JP2013099089A (en) Rotor for motor and method of manufacturing the same
JP7067564B2 (en) Stator core manufacturing method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16838699

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16838699

Country of ref document: EP

Kind code of ref document: A1