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: 10596638
    Abstract: 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: Grant
    Filed: October 7, 2016
    Date of Patent: March 24, 2020
    Assignee: O-M LTD.
    Inventors: Tatsuo Shimizu, Takio Nakamura, Hirofumi Nakakubo, Akira Nishiyama
  • Patent number: 10239174
    Abstract: 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: Grant
    Filed: July 21, 2017
    Date of Patent: March 26, 2019
    Assignee: O-M LTD.
    Inventors: Takio Nakamura, Masaki Negami, Hirofumi Nakakubo, Akihiro Goto
  • Publication number: 20180304379
    Abstract: 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: Application
    Filed: October 7, 2016
    Publication date: October 25, 2018
    Applicant: O-M LTD.
    Inventors: Tatsuo SHIMIZU, Takio NAKAMURA, Hirofumi NAKAKUBO, Akira NISHIYAMA
  • Publication number: 20180065224
    Abstract: 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: Application
    Filed: July 21, 2017
    Publication date: March 8, 2018
    Applicant: O-M LTD.
    Inventors: Takio NAKAMURA, Masaki NEGAMI, Hirofumi NAKAKUBO, Akihiro GOTO
  • Publication number: 20170312829
    Abstract: 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: Application
    Filed: April 26, 2017
    Publication date: November 2, 2017
    Applicant: O-M LTD.
    Inventors: Takio NAKAMURA, Hirofumi NAKAKUBO, Akihiro GOTO, Kensaku SEKI
  • Patent number: 9314890
    Abstract: 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: Grant
    Filed: July 18, 2013
    Date of Patent: April 19, 2016
    Assignee: O-M LTD.
    Inventors: Tatsuo Shimizu, Takio Nakamura, Katsunori Kabasawa, Akihiro Goto
  • Publication number: 20140033490
    Abstract: 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: Application
    Filed: July 18, 2013
    Publication date: February 6, 2014
    Inventors: Tatsuo SHIMIZU, Takio NAKAMURA, Katsunori KABASAWA, Akihiro GOTO
  • Patent number: 8640571
    Abstract: 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: Grant
    Filed: July 30, 2010
    Date of Patent: February 4, 2014
    Assignee: O-M Ltd.
    Inventors: Tatsuo Shimizu, Takio Nakamura, Akihiro Goto, Yuki Noguchi
  • Patent number: 8578824
    Abstract: 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: Grant
    Filed: February 3, 2011
    Date of Patent: November 12, 2013
    Assignee: O-M Ltd.
    Inventors: Hirofumi Nakakubo, Takio Nakamura, Katsunori Kabasawa, Tetsuya Yanagisawa
  • Publication number: 20110259162
    Abstract: 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: Application
    Filed: February 3, 2011
    Publication date: October 27, 2011
    Applicant: O-M LTD.
    Inventors: Hirofumi NAKAKUBO, Takio NAKAMURA, Katsunori KABASAWA, Tetsuya YANAGISAWA
  • Publication number: 20110035917
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: February 17, 2011
    Applicant: O-M LTD.
    Inventors: Tatsuo Shimizu, Takio NAKAMURA, Akihiro Goto, Yuki Noguchi
  • Patent number: 7761965
    Abstract: 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: Grant
    Filed: March 10, 2008
    Date of Patent: July 27, 2010
    Assignee: O-M Ltd.
    Inventors: Takio Nakamura, Tatsuo Shimizu, Ryuji Nishiyama, Akihiro Goto, Takashi Ueda
  • Publication number: 20090087270
    Abstract: 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: Application
    Filed: March 10, 2008
    Publication date: April 2, 2009
    Applicant: O-M LTD.
    Inventors: Takio NAKAMURA, Tatsuo SHIMIZU, Ryuji NISHIYAMA, Akihiro GOTO, Takashi UEDA
  • Patent number: 7367097
    Abstract: 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: Grant
    Filed: January 24, 2006
    Date of Patent: May 6, 2008
    Assignee: O-M Ltd.
    Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda
  • Patent number: 7220089
    Abstract: 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: Grant
    Filed: January 24, 2006
    Date of Patent: May 22, 2007
    Assignee: O-M Ltd.
    Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda
  • Publication number: 20060196026
    Abstract: 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: Application
    Filed: January 24, 2006
    Publication date: September 7, 2006
    Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda
  • Publication number: 20060188353
    Abstract: 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: Application
    Filed: January 24, 2006
    Publication date: August 24, 2006
    Inventors: Takio Nakamura, Akihiro Goto, Tatsuo Shimizu, Takashi Ueda