WO2006115182A1 - 超音波モータおよび超音波モータの製造方法 - Google Patents
超音波モータおよび超音波モータの製造方法 Download PDFInfo
- Publication number
- WO2006115182A1 WO2006115182A1 PCT/JP2006/308358 JP2006308358W WO2006115182A1 WO 2006115182 A1 WO2006115182 A1 WO 2006115182A1 JP 2006308358 W JP2006308358 W JP 2006308358W WO 2006115182 A1 WO2006115182 A1 WO 2006115182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- stator
- ultrasonic motor
- ions
- contact portion
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/005—Mechanical details, e.g. housings
- H02N2/0065—Friction interface
- H02N2/007—Materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
Definitions
- the present invention relates to an ultrasonic motor having a stator having a piezoelectric element for applying a predetermined ultrasonic voltage to move the rotor in a certain direction, and a rotor fixed to the stator by a frictional force, and
- the present invention relates to a method for manufacturing an ultrasonic motor.
- ultrasonic motors have been increasingly used to drive stages. This is thought to be due to the fact that the ultrasonic motor has two major features, that is, its ability to achieve a minute drive of lnm and its high position holding capability when stopped. There is no knock lash like the ball screw screw stage drive mechanism.
- An ultrasonic motor is composed of a stator that generates vibrations of a predetermined phase and a rotor that moves due to the vibrations.
- the stator and the rotor are held in place with high accuracy by the frictional force.
- the generated friction powder adheres to the LSI mask mounted on the stage composed of the ultrasonic motor and becomes a contaminant, leading to a serious failure of the LSI mask.
- the present invention improves the wear resistance of the contact portion and makes the hardness different by irradiating ions on at least one contact portion of the stator and rotor constituting the ultrasonic motor.
- the purpose is to reduce dust generation.
- the present invention improves the wear resistance of the contact portion of the stator and rotor when the ultrasonic motor is driven by irradiating at least one contact portion of the stator and rotor constituting the ultrasonic motor with ions. In addition, it is possible to reduce dust generation by making the hardness of the two different.
- the present invention aims to reduce dust generation by improving the wear resistance and different hardness by irradiating at least one contact portion of the stator and rotor constituting the ultrasonic motor with ions. Is possible.
- FIG. 1 shows an explanatory diagram of the present invention.
- FIG. 1 (a) schematically shows an example of ion irradiation of the rotor 1.
- FIG. 1 (a) schematically shows an example of ion irradiation of the rotor 1.
- a rotor 1 is obtained by removing the rotor 1 constituting the ultrasonic motor.
- the rotor 1 is an ultra-drive that drives the stage mechanism 4 in Fig. 4 (a) described later. This is rotor 1 of the sonic motor.
- the rotor 1 is also formed of a ceramic force such as alumina, and the portion of the rotor 1 that contacts the stator 2 (the portion that is irradiated with ions) is processed extremely flat.
- the rotor 1 and the stator 2 have a force that generates a ceramic isotropic force.
- Altic (Al O—TiC) ceramics for higher wear resistance
- Altic means Al O is 20 wt% or more and 80 wt% or less
- an ion implantation region (depth direction) is set to a region of about several hundred nm force several tens; z m, and ions are implanted into the region.
- the ion to be implanted is not limited as long as it has improved wear resistance, but one or more of nitrogen, carbon, boron, titanium, argon, chromium, nickel, copper, indium, silver, molybdenum, or a compound thereof.
- nitrogen or argon the wear resistance of the contact portion of the rotor 1 and the stator 2 could be improved.
- FIG. 1 (b) schematically shows an example of ion irradiation of the stator 2.
- the stator 2 is obtained by taking out the stator 2 constituting the ultrasonic motor.
- the ultrasonic motor for driving the stage mechanism 4 in FIG. This is the stator 2.
- the stator 2 is usually made of alumina, and the portion in contact with the rotor 1 (the portion irradiated with ions) is covered with a very smooth force.
- An ion implantation region (depth direction) is set to a region of about several hundreds of nanometers and several tens of meters, and ions are implanted into the region where the illustrated stator 2 is in contact with the mouth 1.
- the ions to be implanted are, for example, one or more of nitrogen, carbon, boron, titanium, argon, chromium, nickel, copper, indium, silver, molybdenum, or a compound thereof. If it improves, it will not be restricted to this.
- FIG. 1 (c) shows an example of an ion irradiation apparatus.
- the ion irradiation device 21 is a device for driving ions into the contact portion of the rotor 1 in FIG. 1 (a) or the stator 2 in FIG. 1 (b). And the force such as irradiation room is also constructed.
- the preliminary exhaust chamber 22 is a chamber in which the rotor 1 and the stator 2 in the atmosphere (in the clean room) are placed and preliminarily evacuated, and is preliminarily evacuated from the atmosphere to a predetermined pressure with an oil-free pump. After preliminary evacuation, the rotor 1 or the stator 2 is transported into the sample chamber of the main body of the ion irradiation device 21 and fixed to the stage 25 by a robot mechanism (not shown).
- the ion source 23 generates ions.
- the ion pump 24 is a pump that exhausts the inside of the ion irradiation device 21 to a clean high vacuum.
- the stage 25 is a moving table for fixing ions to the rotor 1, the stator 2, and the like and irradiating ions to an arbitrary place by scanning.
- the oil-free pump 26 is an oil-free pump that evacuates from atmospheric pressure to a predetermined pressure, and is a molecular pump or the like.
- the rotor 1 in Fig. 1 (a) or the stator 2 in Fig. 1 (b) is preliminarily removed.
- the sample is transported and fixed on the stage 25 in the sample chamber of the ion irradiation device 21.
- the contact portion of the rotor 1 in FIG. 1 (a) or the stator 2 in FIG. 1 (b) fixed on the stage 25 is discharged from the ion source 23.
- the ions are accelerated at a predetermined high pressure and ion implantation is performed for a predetermined time at the contact portion of the rotor 1 or the stator 2 (detailed in the flowchart of FIG. 2). Transfer the rotor 1 or stator 2 to the preliminary exhaust chamber 22, take it out into the atmosphere (in a clean room), and complete a series of ion irradiation.
- FIG. 2 shows a flowchart for explaining ion irradiation according to the present invention.
- S1 is rotor processed.
- the rotor 1 shown in FIG. 1A is processed as the rotor 1 constituting the ultrasonic motor.
- S2 sets the rotor in the irradiation chamber. This is because the rotor 1 in FIG. 1 (a) that was covered in S1 is placed in the preliminary exhaust chamber 22 of the ion irradiation device 21 in FIG. Move to the stage 25 in the irradiation chamber and fix it.
- S3 exhausts. After setting the stage 25 in the irradiation chamber in S2, exhaust the ion pump 24 sufficiently.
- S4 sets irradiation conditions. This is because, for example, the irradiation conditions for ion irradiation are as follows: • Irradiation ion acceleration voltage: IKeV to several hundred KeV
- Ion species Ions of nitrogen, carbon, boron, titanium, argon, chromium, nickel, copper, indium, silver, molybdenum or their compounds
- ion irradiation is performed. This is automatically controlled by a computer based on the conditions set in S4, and ion contact is applied to the contact part of rotor 1 or stator 2 fixed on stage 25. Shoot.
- S6 takes out the rotor 1. This is because the rotor 1 that has completed the ion irradiation in S5 is taken out (the rotor 1 is once put into the preliminary exhaust chamber from above the stage 25 in FIG. 1 (c), and then only the preliminary exhaust chamber is equal to the atmospheric pressure. And take it out outside (clean room)).
- the rotor 1 of FIG. 1 (a) (or the stator 2 of FIG. 1 (b)) is set in the irradiation chamber, irradiated with ions, and taken out to remove the rotor constituting the ultrasonic motor. 1 or the contact portion of the stator 2 can be irradiated with ions.
- FIG. 3 shows an explanatory diagram of the present invention.
- Fig. 3 (a) shows an example of a qualitative relationship curve of the relative wear amount with respect to the ion implantation amount.
- the horizontal axis represents the ion implantation amount
- the vertical axis represents the relative wear amount.
- FIG. 3 (b) shows an example of a qualitative relationship curve of relative hardness with respect to relative wear.
- the horizontal axis represents the relative hardness, and the vertical axis represents the relative wear amount.
- This is a qualitative representation of rotor 1 as shown in Fig. 3 (a) by measuring the relationship between the relative amount of wear and the relative hardness at that time.
- the amount of wear of the stator 2 and the rotor 1 can be reduced by irradiating at least the contact portion of the stator 2 and the rotor 1 with different hardnesses.
- the hardness is Vickers hardness (Hv), which can be measured according to JIS R 1601-1999, and the wear amount is the arithmetic average height (Ra ) In accordance with JIS B 0601-2001.
- FIG. 4 shows an example stage of the present invention.
- FIG. 4 (a) schematically shows a state in which an ultrasonic motor is attached to the stage mechanism 4.
- FIG. 4 When high frequency voltages of SIN cot and COS cot shown in the figure are applied to the piezoelectric ceramic, when the piezoelectric ceramic expands and the stator 2 is fixed, the rotor 1 that is in contact with the flat frictional force is moved to the right or left. It can be moved (a known movement method).
- FIG. 4B shows a cross-sectional view of a part of the rotor 1 and the stator 2 taken out.
- ions 11 are implanted in the portion where the rotor 1 contacts the stator 2, and the wear resistance of the portion is improved, so that dust generation from the contact portion is reduced. It is possible to do this.
- the present invention relates to an ultrasonic motor for reducing dust generation by irradiating at least one contact portion of a stator or rotor constituting an ultrasonic motor with ions to improve wear resistance or different hardness. And an ultrasonic motor manufacturing method.
- FIG. 1 is an explanatory diagram of the present invention.
- ⁇ 2 Ion irradiation explanation flow of the present invention.
- FIG. 3 An illustration of the present invention.
- FIG. 4 is an example stage of the present invention. Explanation of symbols
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007514657A JPWO2006115182A1 (ja) | 2005-04-21 | 2006-04-20 | 超音波モータおよび超音波モータの製造方法 |
| DE112006000998T DE112006000998T5 (de) | 2005-04-21 | 2006-04-20 | Ultraschallmotor und Verfahren zur Herstellung eines Ultraschallmotors |
| US11/912,137 US20090212660A1 (en) | 2005-04-21 | 2006-04-20 | Ultrasonic motor and method for manufacturing ultrasonic motor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005124209 | 2005-04-21 | ||
| JP2005-124209 | 2005-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006115182A1 true WO2006115182A1 (ja) | 2006-11-02 |
Family
ID=37214799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/308358 Ceased WO2006115182A1 (ja) | 2005-04-21 | 2006-04-20 | 超音波モータおよび超音波モータの製造方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20090212660A1 (ja) |
| JP (1) | JPWO2006115182A1 (ja) |
| DE (1) | DE112006000998T5 (ja) |
| WO (1) | WO2006115182A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010158083A (ja) * | 2008-12-26 | 2010-07-15 | Chuo Univ | 超音波モータ |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63186032A (ja) * | 1986-09-27 | 1988-08-01 | Toyota Central Res & Dev Lab Inc | 無潤滑摺動部材 |
| JPH05143921A (ja) * | 1991-11-20 | 1993-06-11 | Nissin Electric Co Ltd | 磁気ヘツドおよびその製造方法 |
| JP2005051836A (ja) * | 2003-07-29 | 2005-02-24 | Kyocera Corp | 案内装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04156281A (ja) * | 1990-10-16 | 1992-05-28 | Brother Ind Ltd | 超音波モータ |
-
2006
- 2006-04-20 US US11/912,137 patent/US20090212660A1/en not_active Abandoned
- 2006-04-20 JP JP2007514657A patent/JPWO2006115182A1/ja not_active Ceased
- 2006-04-20 DE DE112006000998T patent/DE112006000998T5/de not_active Withdrawn
- 2006-04-20 WO PCT/JP2006/308358 patent/WO2006115182A1/ja not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63186032A (ja) * | 1986-09-27 | 1988-08-01 | Toyota Central Res & Dev Lab Inc | 無潤滑摺動部材 |
| JPH05143921A (ja) * | 1991-11-20 | 1993-06-11 | Nissin Electric Co Ltd | 磁気ヘツドおよびその製造方法 |
| JP2005051836A (ja) * | 2003-07-29 | 2005-02-24 | Kyocera Corp | 案内装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010158083A (ja) * | 2008-12-26 | 2010-07-15 | Chuo Univ | 超音波モータ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2006115182A1 (ja) | 2008-12-18 |
| US20090212660A1 (en) | 2009-08-27 |
| DE112006000998T5 (de) | 2008-03-27 |
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