Aisin Seiki Kabushiki Kaisha

Mitsui High-Tec Incorporated

Nachi - Fujikoshi Corporation

Akinori Hoshino

Haruji Suzuki

Tetsuya Morita

Sadao Mizuno

Masafumi Sakuma

Hiroyuki Yamamoto

Shusaku Kamio

Hiroaki Yabui

Akira Nagai

Iwao Myojin

Shinichiro Hazama

Toshiya Sugiyama

Noriaki Nonaka

Atsushi Torii

Hideyuki Aikyo

Shigeharu Yamamoto

Nobuhisa Nakajima

Koji Sato

Satoru Shibata

Koichi Sakamoto

Yousuke Iguchi

Nobutaka Kanoh

Hisashi Kato

Yusaku Kawanishi

Haruo Suzuki

Fumiyoshi Murakami

Tsuneo Shishido

Hiroyuki Takahashi

Akira Muraoka

Tomoko Hiramatsu

A manufacturing method of a rotary electric machine is disclosed. The rotary electric machine includes a stator provided with a stator iron core, which is cylindrical and in which slots are formed in a circumferential direction on an inner circumferential surface, and coils of phases that are each inserted into the slots, and a movable element provided with a movable element iron core supported in a rotatable manner relative to the stator and at least a pair of movable element magnetic poles provided in the movable element iron core. The method includes: a split flux coil formation step; a coil setting step; a stator iron core setting step; and a split flux coil collective insertion step.

Manufacturing method of rotary electric machine and rotary electric machine

A roller dice device includes a pair of rolling rollers respectively including circumferential rolling grooves formed at outer circumferential surfaces thereof, a supporting portion rotatably supporting the pair of rolling rollers respectively around roller axes extending in parallel with each other, a spaced portion configured by a rolling portion, through which a rolling material moves, and formed by the circumferential rolling grooves facing each other, and a restricting portion formed at the outer circumferential surfaces of the pair of the rolling rollers and restricting displacement of the pair of rolling rollers relative to each other in the axial direction of the roller axes.

Roller dice device, method for manufacturing insulator coil and winding apparatus

A method for manufacturing a laminated rotor core includes a punching process for punching a strip-shaped material to make a core piece, a placing process, which is performed simultaneously with the punching process of the core piece, for placing the core piece in a die so that the core piece is placed on another core piece previously punched and placed in the die and a joining process for joining the core pieces.

Method for manufacturing laminated rotor core

A motor includes a core having a plurality of laminations, which are stacked together and an end-plate provided at an end surface of the core and supporting the core, wherein the end-plate is formed by pressing a hollow material in one direction thereof in order to plastically deform the hollow material in a plate-shape.

Motor

A rotational motor includes a stator formed by a core member including: a magnetic core portion extending in a radial direction of the rotational motor and formed into a fixed shape in every cross section thereof extending orthogonally relative to the radial direction, a coil wound around the magnetic core portion to form a plurality of layers and an engagement member engaging with the coil. A gap is generated between windings of the coil at a predetermined position when an uppermost layer winding portion of the coil is wound in series with a second layer winding portion from an outer side to an inner side of the uppermost layer winding portion in the radial direction. The coil is wound to fill the gap when a winding position of the coil is returned from an innermost side to the outer side of the uppermost layer winding portion in the radial direction.

Electric rotational motor

A wire winding apparatus for winding a wire on a bobbin includes a forming device forming the wire having a rounded cross section to have a polygonal cross section and a winding device winding the wire formed by the forming device on the bobbin.

Wire winding apparatus, method for wire winding and wire wound bobbin

A laminated core () and a method for manufacturing the same formed with multiple continuous segment core pieces () wound in a spiral form by bending connecting portions () mutually connecting the segment core pieces (), the connecting portions () being formed in an outer peripheral area (), while the connecting portions () of vertically adjacent layers being displaced in a circumferential direction with inner edges or outer edges of the segment core pieces () fitted, the laminated core comprising: a concave cutout () provided in a radial exterior of each connecting portion () to dispose a radially expanded portion () within an outer circle of the laminated core (), the radially expanded portion () being formed with each connecting portion () expanding radially outward at the time of bending each connecting portion (); an interior cutout () provided in a radial interior of each connecting portion () to define a bending position of each connecting portion (); and a receptacle () provided in a radial exterior of each segment core piece () to receive an expanded part () formed in the thickness direction at the time of bending each connecting portion ().

Laminated core and method for manufacturing the same

A webbed spiral bevel gear formed by cold forging includes: gear teeth formed at a peripheral surface of the gear basis to be integral therewith. Each gear tooth includes a tooth top land and a tooth bottom land both in a slanting and curved manner relative to a center axis of the gear basis. The webbed spiral bevel gear includes a web portion formed at radially outer end portions of the gear teeth to be integral therewith and closing the tooth bottom lands at the radially outer end portions of the gear teeth. The web portion is continuous with the radially outer end portions of the tooth top lands. A profile of the radially outer end portion of the tooth top land of each gear tooth has two edges extending at a slant from each other and expanding in a direction of the web portion.

Webbed spiral bevel gear

A motor-incorporated hypocycloid-type speed reducer includes: an eccentric portion configured to rotate in response to rotation of a rotor secured to a casing; an internal ring gear fixed to the casing and including a first internal gear coaxial with the rotor; an output shaft including a second internal gear coaxial with the rotor; an external gear including a first external gear and a second external gear and rotatably supported by the eccentric portion so as to rotate in an eccentric manner; a first sliding member held tight in the axial direction between one end surface of the output shaft and the end plate; and a second sliding member held tight in the axial direction between an other end surface of the output shaft and the supporting member.

Motor-incorporated hypocycloid-type speed reducer

A laminated core having a first number of magnetic poles, the first number being a natural number divided by two, of a rotary electric machine, includes a plurality of arc-shaped unit cores each having a second number of magnetic poles, the second number being a natural number except for an aliquot part of the first number. The unit cores are wound and laminated a predetermined number of times in a circumferential direction into a spiral shape in such a manner that an axial lamination amount of the unit cores is obtained by an equation of X=&#x3b8;*t/360, X being the axial lamination amount, &#x3b8; being a winding angle of the unit cores, and t being a thickness of the unit core. The unit cores are adjacent to each other in the circumferential direction connected to each other at a part of an outer circumference thereof.

Laminated core of rotary electric machine

A motor-incorporated hypocycloid-type speed reducer includes: a motor housed in a case; a first larger internal gear; a second smaller internal gear coaxial with a motor shaft; an output shaft coaxial with the motor shaft, the output shaft being provided with the second internal gear; and an external gear. A motor core of the motor is provided with an eccentric portion eccentric to the motor shaft at a predetermined degree. The external gear, which has a first external gear engaged with the first internal gear and a second external gear engaged with the second internal gear, is further provided with a rotor-receiving portion rotatable integrally with the eccentric portion of the motor core. The rotor-receiving portion is coaxial with the first external gear and the second external gear.

A connecting structure includes a first member including a hole which has a narrower width at an opening portion than a width at a bottom portion and a projecting portion projected toward the opening portion at the bottom portion of the hole, and a second member with a longer shape than a depth of the hole of the first member wherein the second member is inserted into the hole of the first member, the second member being plastically deformed by pushing the second member into the bottom portion of the first member with pressure.

Method for connecting two members

A grinding method includes a grit sticking step and a grinding step. In the grit sticking step, grit particles are stuck in a first tool by contacting the first tool with a second tool which is harder than the first tool, rotating the first tool and the second tool, and feeding the grit to the contacting surface between the first tool and the second tool. In the grinding step, the workpiece is ground by contacting the first tool with the workpiece and rotating the first tool or the workpiece.

Grinding method using grit stuck to a tool having low hardness

This invention aims to provide a method of lapping a bevel gear effectively by placing a gear-shaped tool whose axis has the same relation with the axis of the bevel gear as those of hypoid gears. In a double mode, gear-shaped tools are placed whose axes lie in a position offset with respect to the axes of the first gear and the second gear and have the same relation as those of hypoid gears. The first gear is engaged with one gear-shaped tool and the second gear is engaged with the other gear-shaped tool, while lapping liquid is supplied to engaging portions, thereby lapping engaging surfaces of toothed portions of the first gear and the second gear.

Growing community of inventors

Nisshin, Japan

Akinori Hoshino