Patents by Inventor Atsushi Shimaoka
Atsushi Shimaoka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10900765Abstract: A form measuring apparatus includes a base; an arm capable of swinging relative to the base; a coupler coupling the base and the arm, and having a deformation region that is capable of elastic deformation between the base and the arm; and a distortion detector installed in the deformation region. In the form measuring apparatus, a stylus is mounted to the arm and can slide along a surface of a work piece.Type: GrantFiled: December 3, 2018Date of Patent: January 26, 2021Assignee: MITUTOYO CORPORATIONInventors: Atsushi Shimaoka, Kazuhiko Hidaka
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Patent number: 10422628Abstract: A measuring probe includes a stylus having a contact part, an axial motion mechanism, and a rotary motion mechanism. The axial motion mechanism includes first diaphragm structures and a moving member that allows the contact part to move in an axial direction. The rotary motion mechanism includes a second diaphragm structure and a rotating member that allows the contact part to move along a plane perpendicular to the axial direction. The first diaphragm structures are disposed at a symmetric distance with respect to the second diaphragm structure, and the second diaphragm structure is disposed between the first diaphragm structures in the axial direction. The axial motion mechanism supports the rotary motion mechanism, or the rotary motion mechanism supports the axial motion mechanism.Type: GrantFiled: February 2, 2017Date of Patent: September 24, 2019Assignee: MITUTOYO CORPORATIONInventors: Atsushi Shimaoka, Tomoyuki Miyazaki, Kazuhiko Hidaka
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Publication number: 20190170493Abstract: A form measuring apparatus includes a base; an arm capable of swinging relative to the base; a coupler coupling the base and the arm, and having a deformation region that is capable of elastic deformation between the base and the arm; and a distortion detector installed in the deformation region. In the form measuring apparatus, a stylus is mounted to the arm and can slide along a surface of a work piece.Type: ApplicationFiled: December 3, 2018Publication date: June 6, 2019Applicant: MITUTOYO CORPORATIONInventors: Atsushi SHIMAOKA, Kazuhiko HIDAKA
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Patent number: 9810529Abstract: A measuring probe includes a stylus having a contact part to be in contact with an object to be measured, an axial motion mechanism having a moving member that allows the contact part to move in an axial direction, and a rotary motion mechanism having a rotating member that allows the contact part to move along a plane perpendicular to the axial direction by means of rotary motion. The measuring probe includes a main body housing that supports the axial motion mechanism, a module housing that supports the rotary motion mechanism, and a displacement detector supported by the main body housing for detecting displacement of the moving member. The measuring probe with this configuration ensures high measurement accuracy while keeping a low cost.Type: GrantFiled: July 1, 2015Date of Patent: November 7, 2017Assignee: MITOTOYO CORPORATIONInventors: Atsushi Shimaoka, Tomoyuki Miyazaki, Kazuhiko Hidaka
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Publication number: 20170146336Abstract: A measuring probe includes a stylus having a contact part, an axial motion mechanism, and a rotary motion mechanism. The axial motion mechanism includes first diaphragm structures and a moving member that allows the contact part to move in an axial direction. The rotary motion mechanism includes a second diaphragm structure and a rotating member that allows the contact part to move along a plane perpendicular to the axial direction. The first diaphragm structures are disposed at a symmetric distance with respect to the second diaphragm structure, and the second diaphragm structure is disposed between the first diaphragm structures in the axial direction. The axial motion mechanism supports the rotary motion mechanism, or the rotary motion mechanism supports the axial motion mechanism.Type: ApplicationFiled: February 2, 2017Publication date: May 25, 2017Applicant: MITUTOYO CORPORATIONInventors: Atsushi SHIMAOKA, Tomoyuki MIYAZAKI, Kazuhiko HIDAKA
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Patent number: 9618312Abstract: A measuring probe includes a stylus having a contact part to be in contact with an object to be measured, an axial motion mechanism having a moving member that allows the contact part to move in an axial direction, and a rotary motion mechanism having a rotating member that allows the contact part to move along a plane perpendicular to the axial direction by means of rotary motion. The measuring probe includes a probe main body that incorporates the axial motion mechanism, and a probe module that is supported by the probe main body, incorporates the rotary motion mechanism, and supports the stylus. The probe main body and the probe module are detachably coupled to each other with a pair of rollers and a ball capable of positioning to each other. This allows adequate detection sensitivity and a restoring force suitable for the stylus to be obtained at a low cost.Type: GrantFiled: July 1, 2015Date of Patent: April 11, 2017Assignee: MITUTOYO CORPORATIONInventors: Atsushi Shimaoka, Tomoyuki Miyazaki, Kazuhiko Hidaka
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Patent number: 9605943Abstract: A measuring probe includes a stylus, an axial motion mechanism, and a rotary motion mechanism. The axial motion mechanism includes a pair of first diaphragm structures that allows a moving member to be displaced, and the rotary motion mechanism includes a second diaphragm structure that allows a rotating member to be displaced. The second diaphragm structure is disposed between the pair of first diaphragm structures in an axial direction. The respective first diaphragm structures are disposed at a symmetric distance with respect to the second diaphragm structure. This can reduce the length in the axial direction and weight thereof and also reduce shape errors and improve measurement accuracy.Type: GrantFiled: July 1, 2015Date of Patent: March 28, 2017Assignee: MITUTOYO CORPORATIONInventors: Atsushi Shimaoka, Tomoyuki Miyazaki, Kazuhiko Hidaka
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Patent number: 9518811Abstract: A measuring force includes a stem, an arm, a detector, a rotation fulcrum, and a measuring force adjuster. A probe which makes contact with a workpiece is provided on the stem. An end portion of the arm is joined to the stem. The rotation fulcrum acts as a fulcrum for a rotating motion of the stem and the arm. The detector detects a displacement amount of the rotating motion of the arm. A crossed spring of the rotation fulcrum imparts on the stem and the arm a torque around an axis of the rotating motion in accordance with the displacement amount of the rotating motion. The measuring force adjuster imparts on the arm and the stem a torque, in a reverse direction of the torque generated by the crossed spring, by an attraction force generated by a magnetic force between at least two magnetic members mutually arranged at opposite ends.Type: GrantFiled: March 26, 2015Date of Patent: December 13, 2016Assignee: MITUTOYO CORPORATIONInventors: Takeshi Yamamoto, Sadayuki Matsumiya, Atsushi Shimaoka, Kazuhiko Hidaka, Tomoyuki Miyazaki, Yasunori Mori
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Publication number: 20160258744Abstract: A measuring probe includes a stylus having a contact part to be in contact with an object to be measured, an axial motion mechanism having a moving member that allows the contact part to move in an axial direction, and a rotary motion mechanism having a rotating member that allows the contact part to move along a plane perpendicular to the axial direction by means of rotary motion. The measuring probe includes a main body housing that supports the axial motion mechanism, a module housing that supports the rotary motion mechanism, and a displacement detector supported by the main body housing for detecting displacement of the moving member. The measuring probe with this configuration ensures high measurement accuracy while keeping a low cost.Type: ApplicationFiled: July 1, 2015Publication date: September 8, 2016Applicant: MITUTOYO CORPORATIONInventors: Atsushi SHIMAOKA, Tomoyuki MIYAZAKI, Kazuhiko HIDAKA
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Publication number: 20160258738Abstract: A measuring probe includes a stylus, an axial motion mechanism, and a rotary motion mechanism. The axial motion mechanism includes a pair of first diaphragm structures that allows a moving member to be displaced, and the rotary motion mechanism includes a second diaphragm structure that allows a rotating member to be displaced. The second diaphragm structure is disposed between the pair of first diaphragm structures in an axial direction. The respective first diaphragm structures are disposed at a symmetric distance with respect to the second diaphragm structure. This can reduce the length in the axial direction and weight thereof and also reduce shape errors and improve measurement accuracy.Type: ApplicationFiled: July 1, 2015Publication date: September 8, 2016Applicant: MITUTOYO CORPORATIONInventors: Atsushi SHIMAOKA, Tomoyuki MIYAZAKI, Kazuhiko HIDAKA
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Publication number: 20160258733Abstract: A measuring probe includes a stylus having a contact part to be in contact with an object to be measured, an axial motion mechanism having a moving member that allows the contact part to move in an axial direction, and a rotary motion mechanism having a rotating member that allows the contact part to move along a plane perpendicular to the axial direction by means of rotary motion. The measuring probe includes a probe main body that incorporates the axial motion mechanism, and a probe module that is supported by the probe main body, incorporates the rotary motion mechanism, and supports the stylus. The probe main body and the probe module are detachably coupled to each other with a pair of rollers and a ball capable of positioning to each other. This allows adequate detection sensitivity and a restoring force suitable for the stylus to be obtained at a low cost.Type: ApplicationFiled: July 1, 2015Publication date: September 8, 2016Applicant: MITUTOYO CORPORATIONInventors: Atsushi SHIMAOKA, Tomoyuki MIYAZAKI, Kazuhiko HIDAKA
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Patent number: 9303968Abstract: A lever-type measuring machine swinging around a supporting point includes a stylus measuring a shape of a measured object, an arm having a first end connected to the stylus and a second end connected to the supporting point, and a balancer having a first end connected to the supporting point. The balancer is formed of a material having high specific flexural rigidity. The lever-type measuring machine enables more accurate measurement.Type: GrantFiled: September 11, 2014Date of Patent: April 5, 2016Assignee: MITUTOYO CORPORATIONInventors: Yasunori Mori, Takeshi Yamamoto, Atsushi Shimaoka, Tomoyuki Miyazaki, Kazuhiko Hidaka
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Publication number: 20150292851Abstract: A measuring force includes a stem, an arm, a detector, a rotation fulcrum, and a measuring force adjuster. A probe which makes contact with a workpiece is provided on the stem. An end portion of the arm is joined to the stem. The rotation fulcrum acts as a fulcrum for a rotating motion of the stem and the arm. The detector detects a displacement amount of the rotating motion of the arm. A crossed spring of the rotation fulcrum imparts on the stem and the arm a torque around an axis of the rotating motion in accordance with the displacement amount of the rotating motion. The measuring force adjuster imparts on the arm and the stem a torque, in a reverse direction of the torque generated by the crossed spring, by an attraction force generated by a magnetic force between at least two magnetic members mutually arranged at opposite ends.Type: ApplicationFiled: March 26, 2015Publication date: October 15, 2015Applicant: MITUTOYO CORPORATIONInventors: Takeshi YAMAMOTO, Sadayuki MATSUMIYA, Atsushi SHIMAOKA, Kazuhiko HIDAKA, Tomoyuki MIYAZAKI, Yasunori MORI
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Publication number: 20150075020Abstract: A lever-type measuring machine swinging around a supporting point includes a stylus measuring a shape of a measured object, an arm having a first end connected to the stylus and a second end connected to the supporting point, and a balancer having a first end connected to the supporting point. The balancer is formed of a material having high specific flexural rigidity. The lever-type measuring machine enables more accurate measurement.Type: ApplicationFiled: September 11, 2014Publication date: March 19, 2015Inventors: Yasunori MORI, Takeshi YAMAMOTO, Atsushi SHIMAOKA, Tomoyuki MIYAZAKI, Kazuhiko HIDAKA
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Patent number: 8869601Abstract: A lever-type detector, a stylus, and an automatic stylus exchanger allow styluses of different types to be exchanged automatically and reduce the burden of exchanging the styluses of different types for the lever-type detector. An approximately U-shaped notch is formed in a seating plate provided for a stylus body. In order to attach a stylus to a stylus holder, the longitudinal direction of the stylus body is set in a direction orthogonal to the central axis of a shaft body of the stylus holder, and the seating plate is moved in the direction orthogonal to the central axis of the shaft body. Then, the notch guides the shaft body to the center of gravity of the whole stylus on the seating plate. With the shaft body guided to the center of gravity by the notch, a flat swinging member holds the seating plate detachably.Type: GrantFiled: December 22, 2010Date of Patent: October 28, 2014Assignee: Mitutoyo CorporationInventors: Takeshi Yamamoto, Atsushi Shimaoka
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Patent number: 8261461Abstract: A linear guiding mechanism includes a fixed member, a moving member, a first double parallel leaf spring mechanism and a second double parallel leaf spring mechanism arranged between the fixed member and the moving member and configured to movably support the moving member. The first double parallel leaf spring mechanism and the second double parallel leaf spring mechanism are arranged at an angle other than 180° (for example, 90°) about an axis of movement of the moving member.Type: GrantFiled: January 14, 2010Date of Patent: September 11, 2012Assignee: Mitutoyo CorporationInventors: Atsushi Shimaoka, Takeshi Yamamoto
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Patent number: 8161657Abstract: A position controller provided in a controlling module obtains a difference between a detected rotation angle of a stylus and a target rotation angle, and determines an energization amount to a voice coil motor so that the difference becomes zero. A variable limiter circuit limits a driving current, which is supplied from the position controller, to a limitation value so that a rotation force applied to the stylus from the voice coil motor is constant. A target rotation angle issuing portion switches over the target rotation angle based on a relative position of a contact portion of the stylus.Type: GrantFiled: October 21, 2010Date of Patent: April 24, 2012Assignee: Mitutoyo CorporationInventors: Takeshi Yamamoto, Atsushi Shimaoka
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Publication number: 20110162444Abstract: A lever-type detector, a stylus, and an automatic stylus exchanger allow styluses of different types to be exchanged automatically and reduce the burden of exchanging the styluses of different types for the lever-type detector. An approximately U-shaped notch is formed in a seating plate provided for a stylus body. In order to attach a stylus to a stylus holder, the longitudinal direction of the stylus body is set in a direction orthogonal to the central axis of a shaft body of the stylus holder, and the seating plate is moved in the direction orthogonal to the central axis of the shaft body. Then, the notch guides the shaft body to the center of gravity of the whole stylus on the seating plate. With the shaft body guided to the center of gravity by the notch, a flat swinging member holds the seating plate detachably.Type: ApplicationFiled: December 22, 2010Publication date: July 7, 2011Applicant: MITUTOYO CORPORATIONInventors: Takeshi YAMAMOTO, Atsushi SHIMAOKA
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Publication number: 20110088273Abstract: A position controller provided in a controlling module obtains a difference between a detected rotation angle of a stylus and a target rotation angle, and determines an energization amount to a voice coil motor so that the difference becomes zero. A variable limiter circuit limits a driving current, which is supplied from the position controller, to a limitation value so that a rotation force applied to the stylus from the voice coil motor is constant. A target rotation angle issuing portion switches over the target rotation angle based on a relative position of a contact portion of the stylus.Type: ApplicationFiled: October 21, 2010Publication date: April 21, 2011Applicant: MITUTOYO CORPORATIONInventors: Takeshi Yamamoto, Atsushi Shimaoka
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Publication number: 20100180458Abstract: A linear guiding mechanism includes a fixed member, a moving member, a first double parallel leaf spring mechanism and a second double parallel leaf spring mechanism arranged between the fixed member and the moving member and configured to movably support the moving member. The first double parallel leaf spring mechanism and the second double parallel leaf spring mechanism are arranged at an angle other than 180° (for example, 90°) about an axis of movement of the moving member.Type: ApplicationFiled: January 14, 2010Publication date: July 22, 2010Applicant: MITUTOYO CORPORATIONInventors: Atsushi Shimaoka, Takeshi Yamamoto