Rotary-linear actuator system, method of manufacturing and method of using a rotary-linear actuator
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0041317
(2002-01-08)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
4 인용 특허 :
5 |
초록
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A rotary-linear actuator system, method of manufacturing and method of using a linear actuator are provided. An aspect of the invention includes a rotary-linear actuator having a spindle assembly and a housing assembly. The spindle assembly includes a plurality of annular magnets and a plurality of
A rotary-linear actuator system, method of manufacturing and method of using a linear actuator are provided. An aspect of the invention includes a rotary-linear actuator having a spindle assembly and a housing assembly. The spindle assembly includes a plurality of annular magnets and a plurality of bar magnets affixed to a rotor. The plurality of annular magnets can be arranged with alternating polarity. The plurality of bar magnets can likewise be arranged with alternating polarity. The housing assembly includes a first set of coil(s) and a second set of coil(s).The spindle assembly can be movable and/or rotatable along a longitudinal axis extending through the spindle assembly. The first set of coil(s) can be arranged to, when energized, interact with at least one of the plurality of annular magnets to move the spindle assembly in a linear mode. Further, the second set of coil(s) can be arranged to, when energized, interact with a least one of the bar magnets to move the spindle assembly in a rotation mode. Thus, by selectively energizing one or more of the first set of coil(s) and/or the second set of coil(s), a linear and/or rotation motive force can be generated on the spindle assembly by interacting with fields generated by the plurality of annular magnets and/or the plurality of bar magnets.
대표청구항
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1. A rotary-linear actuator, comprising:a spindle assembly comprising a singular central support and a rotor having a plurality of annular magnets with alternating polarity and a plurality of bar magnets, the spindle assembly movable along and rotatable about a longitudinal axis extending through th
1. A rotary-linear actuator, comprising:a spindle assembly comprising a singular central support and a rotor having a plurality of annular magnets with alternating polarity and a plurality of bar magnets, the spindle assembly movable along and rotatable about a longitudinal axis extending through the rotor; anda housing assembly comprising a coil system having coils arranged to, when energized, interact with the spindle assembly in at least one of a rotational mode and a linear mode. 2. The rotary-linear actuator of claim 1, the coil system further comprising a first set of coils arranged to apply an axial force on the plurality of annular magnets to drive the spindle assembly in a linear mode. 3. The rotary-linear actuator of claim 1, the coil system further comprising a second set of coils arranged to apply a tangential force on the plurality of bar magnets to drive the spindle assembly in a rotational mode. 4. The rotary-linear actuator of claim 1, the plurality of annular magnets circumferentially surrounding at least a portion of the rotor. 5. The rotary-linear actuator of claim 1, further comprising an air bearing between the support and the rotor. 6. The rotary-linear actuator of claim 1, each of the plurality of annular magnets comprising at least two parts. 7. The rotary-linear actuator of claim 6, at least one of the parts of the annular magnets having an arc angle in the range of about 45 degrees to about 360 degrees. 8. The rotary-linear actuator of claim 1, the plurality of bar magnets conformably surrounding at least a portion of the rotor. 9. The rotary-linear actuator of claim 8, at least one of the bar magnets having an arc angle in the range of about 15 degrees to about 180 degrees. 10. The rotary-linear actuator of claim 1, the spindle assembly further comprising a scale assembly. 11. The rotary-linear actuator of claim 10, further comprising a first encoder operative to sense a linear position off the spindle assembly. 12. The rotary-linear actuator of claim 11, the first encoder providing a signal indicative of the linear position of the spindle assembly. 13. The rotary-linear actuator of claim 10, further comprising a second encoder operative to sense a rotational position of the spindle assembly. 14. The rotary-linear actuator of claim 13, the second encoder providing a signal indicative of the rotational position of the spindle assembly. 15. A method of manufacturing the rotary-linear actuator of claim 1, comprising:providing a rotor that circumferentially surrounds a central support;providing a plurality of annular magnets with alternating polarity generally surrounding at least a portion of the rotor;providing a plurality of bar magnets conformably surrounding at least a portion of the rotor;providing a motor shell;providing a first set of coils operative to apply an axial force on the plurality of annular magnets;providing a second set of coils operative to apply a tangential force on the plurality of bar magnets. 16. The method of claim 15, further comprising providing a scale assembly surrounding at least a portion of at least one of the plurality annular magnets and the plurality of bar magnets. 17. The method of claim 16, further comprising providing a first encoder operative to sense a linear position of the spindle assembly. 18. The method of claim 16, further comprising providing a second encoder operative to sense a rotational position of the spindle assembly. 19. A method of actuating a rotary-linear motor, comprising:employing a plurality of annular magnets, at least a subset of which circumferentially surround at least a portion of a rotor, to generate an axial magnetic force, the rotor surrounding a central support;employing a plurality of bar magnets, at least a subset of which conformably surround at least a portion of the rotor, to generate a tangential magnetic force; andemploying an energized coil assembly and at least one of the axial magnetic force and tangential magnetic force to effect movement of the rotor.
이 특허에 인용된 특허 (5)
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Anderson William G. ; McAdams William C., Electromagnetic actuator.
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Chitayat Anwar, Rotary-linear actuator.
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Chitayat Anwar, Rotary-linear actuator.
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Chitayat Anwar, Rotary-linear actuator.
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Chitayat Anwar, Rotary-linear actuator.
이 특허를 인용한 특허 (4)
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Hasegawa,Yuya; Hirata,Katsuhiro; Mitsutake,Yoshio; Ota,Tomohiro; Motohashi,Ryo; Kunita,Tomohiro; Shimizu,Hiroaki; Yabuuchi,Hidekazu; Nishinaka,Takahiro, Actuator.
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Sheahan, Jr., James J.; Morris, Charles E.; Kersens, Paul, Linear-rotary actuator operation.
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Suderman, Donald A., Magnetic roll.
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Budde, Thomas; Inalkac, Aziz; Toldonov, Mykhaylo; Vollmer, Rolf, Measuring system for detecting a rotary-linear displacement and corresponding rotary-linear drive.
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