Toshiba Industrial Products Manufacturing Corporation

Toshiba Industrial Products and Systems Corporatio

Tadashi Morishima

Toyonobu Yamada

Takayuki Akatsuka

Motoyasu Mochizuki

Takashi Hanai

Yasuo Hirano

Chidai Isaka

Masanori Ohashi

Takeo Kaito

Youichi Seo

Katsumi Kinoshita

Hiroshi Horai

Tooru Yamagiwa

A method of manufacturing a stator core includes punching out core members from an electrical steel sheet in three rows arrangement side by side along a width direction of the electrical steel sheet. Each of the core members has connecting projections. The connecting projections project radially outward from an outer periphery of the core member. The punched out core members are stacked to form the stator core. Each of the core members in two of the three rows arrangement have a connecting projection angled at a first angle from the width direction of the electrical steel sheet. Each of the core members in a third row having a connecting projection angled at a different second angle from the width direction of the electrical steel sheet.

Method of manufacturing stator core

A method of manufacturing a stator core includes die-cutting iron core materials from a band-shaped magnetic steel sheet and stacking the materials. Each material includes an inner circumference formed with three interconnecting lugs. At least one of the lugs included in one of two rows is located between the materials lengthwise adjacent to each other in the other row. Marginal regions are located in parts of the sheet located between the lugs of the materials adjacent to each other in a lengthwise direction of the sheet in a common row, between the material of the one row and the material of the other row and between the materials to be die-cut and each end of the sheet, respectively. The marginal regions are sized to be approximate to a web width in order to join remaining materials after the materials have been die-cut.

Method of manufacturing stator core and the stator core

Growing community of inventors

Mie, Japan

Tadashi Morishima