Thk Co., Ltd.

Tomoyuki Aida

Katsuya Iida

Yuki Hayashi

Hidekazu Michioka

Toshiyuki Aso

Kentaro Yamamoto

Akihiro Unno

Takashi Sakuyama

Ayako Miyajima

Kazuhiro Tani

Ayako Misawa

Toshiyuki Asou

In a bearing for vertical axis windmill configured to rotatably support a vertical axis of a vertical axis windmill, the bearing includes a ball (), a diameter of the ball and a curvature of a rolling groove of the bearing are set to satisfy a predetermined starting torque and a load rating. For example, the curvature of the rolling groove of the bearing is 54% or more and 100% or less, and the diameter of the ball has a ratio of 20% or less with respect to a vertical shaft ().

Bearing for vertical axis windmill and vertical axis wind power generator

A rotary moto actuator with a base, a table, a statorand a rotorof a rotary motorand a first memberand a second memberof a guide mechanismthat have a plurality of base segments, a plurality of table segments, a plurality of stator segments, a plurality of rotor segments, a plurality of first member segmentsand a plurality of second member segments, respectively, which all arranged circumferentially around a center line C. The stator segmentsare connected to the base segments, to which the first member segmentsare connected. The rotor segmentsare connected to the table segments, to which the second member segmentsare connected.

Rotary motor actuator and horizontal axis wind turbine

The motion guide device has a raceway rail having a rolling-element rolling part; a moving block having a loaded rolling-element rolling part facing the rolling-element rolling part and a rolling-element circulation passage including a rolling-element return passage extending approximately in parallel with the loaded rolling-element rolling part; and a plurality of rolling elements arranged in the rolling-element circulation passage. The moving block has a rolling part made of steel and having the loaded rolling-element rolling part, a mounting part connected to the rolling part, having a mounting surface for mounting the moving block onto a counterpart device and having a specific gravity lower than that of the rolling part, and a return part made of resin and having the rolling-element return passage.

Motion guide device and method of producing the same

Provided is a slewing ring which has a structure with a large slewing diameter, and is readily produced at low cost. The slewing ring includes: an outer ring (), in which a load rolling groove () and a no-load rolling groove () for a large number of balls () are arranged along a circumferential direction of an inner peripheral surface of the outer ring () in parallel to each other; an inner ring (), which is provided inside the outer ring (), and in which a load rolling groove () and a no-load rolling groove () for the large number of balls () are arranged along a circumferential direction of an outer peripheral surface of the inner ring () in parallel to each other; and a plurality of ball-retaining blocks (), which are provided in a gap between the outer ring and the inner ring, are assembled between the outer ring and the inner ring through the large number of balls, and causes the large number of balls () to circulate in an endless manner between the load rolling groove () of the outer ring () and the no-load rolling groove () of the inner ring () and between the no-load rolling groove () of the outer ring () and the load rolling groove () of the inner ring ().

Rotation ring

A guide table device is provided with a lower-side plateprovided with a pair of rolling member rolling groovesformed in a first (X) direction, an upper-side plateprovided with a pair of rolling member rolling groovesformed in a second (Y) direction, an intermediate memberhaving rectangular configuration provided with four side portions to which four rolling member rolling groovesare formed so as to be opposed to a pair of rolling member rolling grooves of the lower-side plate and a pair of rolling member rolling grooves of the upper-side plate, and a plurality of ballsdisposed to be rollable between four rolling member rolling passages formed by the lower-side plate, the upper-side plate and the intermediate member. The four rolling member rolling groovesformed to the four side portions of the intermediate memberare formed on the same plane.

Guide table device

A track rail is composed of a pair of rail members in which rolling contact surfaces for rolling bodies are formed, respectively, and a rail housing equipped with a pair of rail mounting grooves in which those rail members are fitted, respectively. Each of the rail members is fixed within a corresponding one of the rail mounting grooves via an adhesive layer. A reference projection, formed on a bottom of one of the pair of the rail mounting grooves, is in contact with a corresponding one of the rail members without the intermediary of the adhesive layer. The rail member fitted in the one of the rail mounting grooves is adhesively fixed in a state of being abutted against the reference projection. The rail member fitted in the other rail mounting groove is adhesively fixed at a predetermined distance from the reference projection.

Method of manufacturing linear guide device and track rail for the linear guide device

A linear motor is provided that includes a rod-like member having a cylindrical body made of a non-magnetic material and a plurality of plate-like segment magnets accommodated in the cylindrical body such that they are stacked in a longitudinal axial direction of the cylindrical body and a coil member having a polyphase coil. The rod-like member is arranged to extend through a center bore of the coil member. The rod-like member of the linear motor comprises the cylindrical body having a substantially oval or substantially rectangular section and the plurality of segment magnets having a substantially oval or substantially rectangular plate shape that are accommodated in the cylindrical body and stacked in the axial direction of the cylindrical body. The section of the center bore of the coil member is substantially oval or substantially rectangular corresponding to the shape of the section of the rod-like member.

Growing community of inventors

Tokyo, Japan

Tomoyuki Aida