Patents by Inventor Takio Nakamura
Takio Nakamura 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: 10596638Abstract: The present invention provides a lathe that is provided with an eccentricity adjustment mechanism that makes it possible for electrical components that are readily affected by the environment to be eliminated from the turntable; for slip rings in particular, which exhibit problems in terms of the durability of signal transmission during high-speed rotation, to be eliminated as well, and for safe and stable adjustment of workpiece eccentricity to be easily achieved. A lathe provided with an eccentricity adjustment mechanism, in which a linear motion guide unit (6) is provided in an inclined state in an engaging part of the center part of a turntable (1) and an axial-direction-movement part (5A) of a center shaft (5); and, due to the center shaft (5) being moved, the turntable (1) moves in the radial direction by the radial pressing force generated by the linear motion guide unit (6) being inclined, and the eccentricity of the workpiece (3) is adjusted.Type: GrantFiled: October 7, 2016Date of Patent: March 24, 2020Assignee: O-M LTD.Inventors: Tatsuo Shimizu, Takio Nakamura, Hirofumi Nakakubo, Akira Nishiyama
-
Patent number: 10239174Abstract: The present invention provides a machine tool provided with a cover body having a simple structure, excellent operability, and low manufacturing cost. A tool post movement region one-side-closing cover part (9) for closing a tool post movement region open part (8) is configured so as to be: capable of expanding and contracting in a horizontal movement direction of a tool post (3); arranged facing the tool post (3); elongated by urging means (10) to press against the tool post (3) in a relatively slidable manner and close the tool post movement region open part (8); expanded and contracted by movement of the tool post (3) to hold the tool post movement region open part (8) in a closed state; and provided unconnected to the tool post (3) so that the tool post (3) is relatively slidable with respect to the tool post movement region open part (8) is held in a closed state.Type: GrantFiled: July 21, 2017Date of Patent: March 26, 2019Assignee: O-M LTD.Inventors: Takio Nakamura, Masaki Negami, Hirofumi Nakakubo, Akihiro Goto
-
Publication number: 20180304379Abstract: The present invention provides a lathe that is provided with an eccentricity adjustment mechanism that makes it possible for electrical components that are readily affected by the environment to be eliminated from the turntable; for slip rings in particular, which exhibit problems in terms of the durability of signal transmission during high-speed rotation, to be eliminated as well, and for safe and stable adjustment of workpiece eccentricity to be easily achieved. A lathe provided with an eccentricity adjustment mechanism, in which a linear motion guide unit (6) is provided in an inclined state in an engaging part of the center part of a turntable (1) and an axial-direction-movement part (5A) of a center shaft (5); and, due to the center shaft (5) being moved, the turntable (1) moves in the radial direction by the radial pressing force generated by the linear motion guide unit (6) being inclined, and the eccentricity of the workpiece (3) is adjusted.Type: ApplicationFiled: October 7, 2016Publication date: October 25, 2018Applicant: O-M LTD.Inventors: Tatsuo SHIMIZU, Takio NAKAMURA, Hirofumi NAKAKUBO, Akira NISHIYAMA
-
Publication number: 20180065224Abstract: The present invention provides a machine tool provided with a cover body having a simple structure, excellent operability, and low manufacturing cost. A tool post movement region one-side-closing cover part (9) for closing a tool post movement region open part (8) is configured so as to be: capable of expanding and contracting in a horizontal movement direction of a tool post (3); arranged facing the tool post (3); elongated by urging means (10) to press against the tool post (3) in a relatively slidable manner and close the tool post movement region open part (8); expanded and contracted by movement of the tool post (3) to hold the tool post movement region open part (8) in a closed state; and provided unconnected to the tool post (3) so that the tool post (3) is relatively slidable with respect to the tool post movement region one-side-closing cover part (9), and the tool post movement region open part (8) is held in a closed state.Type: ApplicationFiled: July 21, 2017Publication date: March 8, 2018Applicant: O-M LTD.Inventors: Takio NAKAMURA, Masaki NEGAMI, Hirofumi NAKAKUBO, Akihiro GOTO
-
Publication number: 20170312829Abstract: A machine tool in which a fluid discharge port (4) for discharging a fluid (F) supplied from a fluid supply unit is provided to a rake surface (3) of a blade tip section (2) provided at a distal end section of the cutting tool (1), which cuts the workpiece (W), and the fluid (F) is discharged from the fluid discharge port (4) toward a rake-surface (2)-facing surface of chips (D) from the workpiece (W) that slide in pressure contact with the rake surface (3), the fluid (F) discharged from the fluid discharge port (4) reducing the force with which the chips (D) that slide in pressure contact with the rake surface (3) make pressure contact with the rake surface (3), and reducing the amount of frictional heat generated by the chips (D) sliding in pressure contact with the rake surface (3).Type: ApplicationFiled: April 26, 2017Publication date: November 2, 2017Applicant: O-M LTD.Inventors: Takio NAKAMURA, Hirofumi NAKAKUBO, Akihiro GOTO, Kensaku SEKI
-
Patent number: 9314890Abstract: A composite processing machine with an automatic swiveling composite turret device. Transmitting and releasing of rotational force to a rotating tool is automatically switched between indexing and locked securing. Included is a clutch-action-coupled rotational force transmission/release switching mechanism (10). A common motor (9) is the drive source for a rotation drive mechanism (7) for transmitting rotational force to a rotating tool (5) and a swivel drive mechanism (8) for swiveling a turret (3). Transmission of rotational force of common motor (9) to rotation drive mechanism (7) is released when turret (3) is slid along swivel shaft part (2) to unlock clutch device (4) and enable turret (3) to swivel, and rotational force of common motor (9) is transmitted to rotating tool (5) when turret (3) is slid back to lock and secure clutch device (4) in an indexed position of turret (3).Type: GrantFiled: July 18, 2013Date of Patent: April 19, 2016Assignee: O-M LTD.Inventors: Tatsuo Shimizu, Takio Nakamura, Katsunori Kabasawa, Akihiro Goto
-
Publication number: 20140033490Abstract: A composite processing machine with an automatic swiveling composite turret device. Transmitting and releasing of rotational force to a rotating tool is automatically switched between indexing and locked securing. Included is a clutch-action-coupled rotational force transmission/release switching mechanism (10). A common motor (9) is the drive source for a rotation drive mechanism (7) for transmitting rotational force to a rotating tool (5) and a swivel drive mechanism (8) for swiveling a turret (3). Transmission of rotational force of common motor (9) to rotation drive mechanism (7) is released when turret (3) is slid along swivel shaft part (2) to unlock clutch device (4) and enable turret (3) to swivel, and rotational force of common motor (9) is transmitted to rotating tool (5) when turret (3) is slid back to lock and secure clutch device (4) in an indexed position of turret (3).Type: ApplicationFiled: July 18, 2013Publication date: February 6, 2014Inventors: Tatsuo SHIMIZU, Takio NAKAMURA, Katsunori KABASAWA, Akihiro GOTO
-
Patent number: 8640571Abstract: An automatic rotating turret device for work machinery is provided, in which a lift turret is not used. The turret device is provided with an axial-direction slide body, which is advanced or retracted in the direction of the axis of rotation of the turret by the drive device advancing or retracting the drive body in a direction orthogonal to the direction of rotation axis; and a clutch device that is engaged or disengaged by the axial-direction slide body being advanced or retracted, the turret being of a non-lift-type, and there being provided to the drive body a tapering action part for generating an expanding action caused by the movement of the drive body and pressingly sliding the axial-direction slide body against the turret stage.Type: GrantFiled: July 30, 2010Date of Patent: February 4, 2014Assignee: O-M Ltd.Inventors: Tatsuo Shimizu, Takio Nakamura, Akihiro Goto, Yuki Noguchi
-
Patent number: 8578824Abstract: There is provided a wheel lathe in which the wheelset center of wheels and a spindle center can be aligned in a simple structure without using a centering part for synchronous lowering from above, and the horizontal distance from the wheelset center is measured at the position of a point along the circumference of the wheel and away from the topmost point of the wheel, such as of a point on an external edge, by a displacement meter having a fixed height, whereby the appropriate required lifting amount (lifter-required displacement) is automatically computed and the wheels are raised to allow the spindle to be appropriately fixed on a consistent basis, the device to be simplified and otherwise improved, and significant reductions to be attained in assembly and adjustment man-hours.Type: GrantFiled: February 3, 2011Date of Patent: November 12, 2013Assignee: O-M Ltd.Inventors: Hirofumi Nakakubo, Takio Nakamura, Katsunori Kabasawa, Tetsuya Yanagisawa
-
Publication number: 20110259162Abstract: There is provided a wheel lathe in which the wheelset center of wheels and a spindle center can be aligned in a simple structure without using a centering part for synchronous lowering from above, and the horizontal distance from the wheelset center is measured at the position of a point along the circumference of the wheel and away from the topmost point of the wheel, such as of a point on an external edge, by a displacement meter having a fixed height, whereby the appropriate required lifting amount (lifter-required displacement) is automatically computed and the wheels are raised to allow the spindle to be appropriately fixed on a consistent basis, the device to be simplified and otherwise improved, and significant reductions to be attained in assembly and adjustment man-hours.Type: ApplicationFiled: February 3, 2011Publication date: October 27, 2011Applicant: O-M LTD.Inventors: Hirofumi NAKAKUBO, Takio NAKAMURA, Katsunori KABASAWA, Tetsuya YANAGISAWA
-
Publication number: 20110035917Abstract: According to the present invention, there is provided an automatic rotating-type turret device for work machinery, in which a lift-type turret is not used. The configuration makes it possible for a clutch device to lock a turret using one drive device (actuator), and generates a wedge effect, thereby obviating the need for a large driving force capable of directly countering a load during cutting operation. The turret can even be locked using air or a small driving force generated by a motor and obviates the need for hydraulics.Type: ApplicationFiled: July 30, 2010Publication date: February 17, 2011Applicant: O-M LTD.Inventors: Tatsuo Shimizu, Takio NAKAMURA, Akihiro Goto, Yuki Noguchi
-
Patent number: 7761965Abstract: It is an object of the present invention to provide a hydraulic-free automatic swiveling turret apparatus which can easily ensure a swiveling function that is smooth and superior in terms of durability using a simple construction without any need to install a hydraulic pressure reducing mechanism requiring complicated design and control.Type: GrantFiled: March 10, 2008Date of Patent: July 27, 2010Assignee: O-M Ltd.Inventors: Takio Nakamura, Tatsuo Shimizu, Ryuji Nishiyama, Akihiro Goto, Takashi Ueda
-
Publication number: 20090087270Abstract: It is an object of the present invention to provide a hydraulic-free automatic swiveling turret apparatus which can easily ensure a swiveling function that is smooth and superior in terms of durability using a simple construction without any need to install a hydraulic pressure reducing mechanism requiring complicated design and control.Type: ApplicationFiled: March 10, 2008Publication date: April 2, 2009Applicant: O-M LTD.Inventors: Takio NAKAMURA, Tatsuo SHIMIZU, Ryuji NISHIYAMA, Akihiro GOTO, Takashi UEDA
-
Patent number: 7367097Abstract: There is provided an innovative tool mounting device for a turning center in which special manipulation is not required even with a simple configuration, and whereby when a cutting tool is clamped/fixed, the bearing unit is deformed by the retraction force of the drawbar because the cutting tool is supported by the ram, the tapered shank is automatically pressed to the mounting engagement unit in a state in which the cutting tool is supported by the ram, an automatic mechanical lock in a state of dual-surface restraint can be implemented, and the turning tool can be securely clamped/fixed.Type: GrantFiled: January 24, 2006Date of Patent: May 6, 2008Assignee: O-M Ltd.Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda
-
Patent number: 7220089Abstract: To provide a tool mounting device for a turning center that allows a rotating tool to be clamped/fixed using a shared clamp mechanism (8), and a turning tool (1B) to be clamped/fixed in an engaged/locked state in a turning center.Type: GrantFiled: January 24, 2006Date of Patent: May 22, 2007Assignee: O-M Ltd.Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda
-
Publication number: 20060196026Abstract: There is provided an innovative tool mounting device for a turning center in which special manipulation is not required even with a simple configuration, and whereby when a cutting tool is clamped/fixed, the bearing unit is deformed by the retraction force of the drawbar because the cutting tool is supported by the ram, the tapered shank is automatically pressed to the mounting engagement unit in a state in which the cutting tool is supported by the ram, an automatic mechanical lock in a state of dual-surface restraint can be implemented, and the turning tool can be securely clamped/fixed.Type: ApplicationFiled: January 24, 2006Publication date: September 7, 2006Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda
-
Publication number: 20060188353Abstract: To provide a tool mounting device for a turning center that allows a rotating tool to be clamped/fixed using a shared clamp mechanism (8), and a turning tool (1B) to be clamped/fixed in an engaged/locked state in a turning center.Type: ApplicationFiled: January 24, 2006Publication date: August 24, 2006Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda