Patents by Inventor Kikutoshi Okada
Kikutoshi Okada 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).
-
Patent number: 10322486Abstract: A grinding machine includes a manual rotating handle provided with a rotation detector that outputs a rotation detection signal so that the position of a grinding wheel with respect to a workpiece can be relatively moved in accordance with the rotation detection signal. The grinding machine further includes a grinding wheel, a moving apparatus that moves the position of the grinding wheel with respect to a workpiece W, a proximity detector that outputs a proximity detection signal corresponding to a relative position or a relative distance between the workpiece and the grinding wheel, a manual rotating handle provided with a rotation detector, and a control apparatus that controls the moving apparatus based on the rotation detection signal. The manual rotating handle is provided with a rotational-torque varying apparatus. The control apparatus controls the rotational-torque varying apparatus based on the proximity detection signal.Type: GrantFiled: February 18, 2015Date of Patent: June 18, 2019Assignee: JTEKT CORPORATIONInventors: Hisayuki Nagaya, Kikutoshi Okada, Shinji Nishio, Hidetaka Sugiura
-
Publication number: 20160361789Abstract: A grinding machine includes a manual rotating handle provided with a rotation detector that outputs a rotation detection signal so that the position of a grinding wheel with respect to a workpiece can be relatively moved in accordance with the rotation detection signal. The grinding machine further includes a grinding wheel, a moving apparatus that moves the position of the grinding wheel with respect to a workpiece W, a proximity detector that outputs a proximity detection signal corresponding to a relative position or a relative distance between the workpiece and the grinding wheel, a manual rotating handle provided with a rotation detector, and a control apparatus that controls the moving apparatus based on the rotation detection signal. The manual rotating handle is provided with a rotational-torque varying apparatus. The control apparatus controls the rotational-torque varying apparatus based on the proximity detection signal.Type: ApplicationFiled: February 18, 2015Publication date: December 15, 2016Applicant: JTEKT CORPOATIONInventors: Hisayuki NAGAYA, Kikutoshi OKADA, Shinji NISHIO, Hidetaka SUGIURA
-
Patent number: 8851957Abstract: A grinding method includes the steps of holding a workpiece by a pair of centering members of a pair of spindle equipment, shifting two centering members to one side of a spindle rotational axis, facing a grinding wheel at the other side to the other end portion of the workpiece, grinding the other end portion of the workpiece by the grinding wheel at the other side by rotating a driving pin of the spindle equipment at one side, retracting the grinding wheel at other side and stopping the rotation of the driving pin at one side and also shifting two centering members to the other side of the spindle rotational axis, facing a grinding wheel at one side to one end portion of the workpiece, and grinding one end portion of the workpiece by the grinding wheel at one side by rotating a driving pin of the spindle equipment at the other side.Type: GrantFiled: June 3, 2011Date of Patent: October 7, 2014Assignee: JTEKT CorporationInventors: Toshiaki Naya, Kikutoshi Okada
-
Patent number: 8579676Abstract: A first angular grinding wheel and a straight grinding wheel having rotation axes parallel to each other are arranged on a swivel slide that turns about a turning axis. A reference symmetry plane (MA) that is parallel to a grinding wheel rotation axis and that includes the turning axis and a reference perpendicular plane (MB) that is perpendicular to the reference symmetry plane and that includes the turning axis are defined. A grinding reference point (PA1) of the first angular grinding wheel (TA1) and a grinding reference point (PP1) of the straight grinding wheel (TP1) are arranged asymmetrical with respect to the reference symmetry plane. A distance from the grinding reference point of the straight grinding wheel to the reference symmetry plane is equal to a distance from the grinding reference point of the first angular grinding wheel to the turning axis.Type: GrantFiled: October 18, 2010Date of Patent: November 12, 2013Assignee: JTEKT CorporationInventors: Kikutoshi Okada, Shinji Deguchi, Dai Kiyota
-
Publication number: 20110300777Abstract: It is an object of the present invention to provide a grinding method of a multifunction grinding machine having no need to exchange one end portion to the other end portion of a workpiece and having a more simple construction to grind both of one and the other end portions.Type: ApplicationFiled: June 3, 2011Publication date: December 8, 2011Applicant: JTEKT CorporationInventors: Toshiaki NAYA, Kikutoshi OKADA
-
Publication number: 20110092139Abstract: A first angular grinding wheel and a straight grinding wheel having rotation axes parallel to each other are arranged on a swivel slide that turns about a turning axis. A reference symmetry plane (MA) that is parallel to a grinding wheel rotation axis and that includes the turning axis and a reference perpendicular plane (MB) that is perpendicular to the reference symmetry plane and that includes the turning axis are defined. A grinding reference point (PA1) of the first angular grinding wheel (TA1) and a grinding reference point (PP1) of the straight grinding wheel (TP1) are arranged asymmetrical with respect to the reference symmetry plane. A distance from the grinding reference point of the straight grinding wheel to the reference symmetry plane is equal to a distance from the grinding reference point of the first angular grinding wheel to the turning axis.Type: ApplicationFiled: October 18, 2010Publication date: April 21, 2011Applicant: JTEKT CORPORATIONInventors: Kikutoshi OKADA, Shinji Deguchi, Dai Kiyota
-
Patent number: 7503244Abstract: It is an object of the present invention to provide a bed of a machine tool to be stably leveled and supported by three support points and to reduce the strain of the bed of which structure is simplified. The bed of the machine tool according to the present invention comprises three props and a ceiling 18. The props are arranged as a triangle. The ceiling is put on the props and supports at least one tool box and work saddle. In the triangle in view of horizontal plane, there exists center of gravity of the whole machine tool.Type: GrantFiled: June 4, 2004Date of Patent: March 17, 2009Assignee: JTEKT CorporationInventors: Teruhiro Nakamura, Hiroaki Kikuchi, Eiji Fukuta, Kikutoshi Okada
-
Publication number: 20060121830Abstract: A grinding method of a crank pin that grinds an outer circumferential surface of the crank pin of a crankshaft having a crank journal and the crank pin eccentric to the crank journal by rotating a crankshaft around a central axis (a center of the journal) of the crank journal and moving a rotating grinding wheel in a diametric direction of the crankshaft according to rotation phase angle of the crankshaft, in which a rotation number of the crankshaft is changed in one revolution of the crankshaft to perform a grinding process.Type: ApplicationFiled: December 2, 2005Publication date: June 8, 2006Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Nobumitsu Hori, Makoto Nonoyama, Kikutoshi Okada
-
Publication number: 20040255736Abstract: It is an object of the present invention to provide a bed of a machine tool to be stably leveled and supported by three support points and to reduce the strain of the bed of which structure is simplified.Type: ApplicationFiled: June 4, 2004Publication date: December 23, 2004Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Teruhiro Nakamura, Hiroaki Kikuchi, Eiji Fukuta, Kikutoshi Okada
-
Patent number: 6711829Abstract: A method for measuring the diameter and eccentricity of a crankpin of a crankshaft which is ground on a grinding machine. A reference plate is provided on a headstock, which is disposed on a table to support the crankshaft. A measurement apparatus having a probe is disposed on a wheel head. Through movements of the table and the wheel head, the probe is first brought into contact with a reference surface of the reference plate, and is then brought into contact with the outer circumferential surface of the crankpin at outermost and innermost points. The distances between the reference surface and the outermost and innermost points are measured, and the diameter and eccentricity of the crankpin are calculated on the basis of the measured distances and the position of the reference surface.Type: GrantFiled: September 21, 2001Date of Patent: March 30, 2004Assignee: Toyoda Koki Kabushiki KaishaInventors: Shoichi Sano, Masahiro Ido, Kikutoshi Okada
-
Patent number: 6511364Abstract: On a grinding machine, a workpiece having eccentric cylindrical portions is rotated around the work spindle axis so that the eccentric cylindrical portions effects a planetary motion. A grinding wheel is reciprocated toward and away from the work spindle axis in synchronism with the planetary motion and is also fed toward the work spindle axis to grind the eccentric cylindrical portion into a target cylindrical profile. Upon completion of a part of the grinding operation, the eccentric cylindrical portion under machining is indexed to a predetermined angular position. A diameter measuring device is moved from its rest position to a measuring position to measure the diameter of the eccentric cylindrical portion.Type: GrantFiled: April 4, 2002Date of Patent: January 28, 2003Assignee: Toyoda Koki Kabushiki KaishaInventors: Masahiro Ido, Kikutoshi Okada
-
Publication number: 20020155790Abstract: On a grinding machine, a workpiece having eccentric cylindrical portions is rotated around the work spindle axis so that the eccentric cylindrical portions effects a planetary motion. A grinding wheel is reciprocated toward and away from the work spindle axis in synchronism with the planetary motion and is also fed toward the work spindle axis to grind the eccentric cylindrical portion into a target cylindrical profile. Upon completion of a part of the grinding operation, the eccentric cylindrical portion under machining is indexed to a predetermined angular position. A diameter measuring device is moved from its rest position to a measuring position to measure the diameter of the eccentric cylindrical portion.Type: ApplicationFiled: April 4, 2002Publication date: October 24, 2002Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Masahiro Ido, Kikutoshi Okada
-
Publication number: 20020066197Abstract: A method for measuring the diameter and eccentricity of a crankpin of a crankshaft which is ground on a grinding machine. A reference plate is provided on a headstock, which is disposed on a table to support the crankshaft. A measurement apparatus having a probe is disposed on a wheel head. Through movements of the table and the wheel head, the probe is first brought into contact with a reference surface of the reference plate, and is then brought into contact with the outer circumferential surface of the crankpin at outermost and innermost points. The distances between the reference surface and the outermost and innermost points are measured, and the diameter and eccentricity of the crankpin are calculated on the basis of the measured distances and the position of the reference surface.Type: ApplicationFiled: September 21, 2001Publication date: June 6, 2002Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Shoichi Sano, Masahiro Ido, Kikutoshi Okada