Manufacturing device for field pole magnet body and manufacturing method for same

Patent metadata

Field	Value
Publication number	US-9613749-B2
Application number	US-201214362766-A
Country	US
Kind code	B2
Filing date	Nov 6, 2012
Priority date	Dec 7, 2011
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A manufacturing device for a field pole magnet body includes a reference jig having reference surfaces in the lengthwise direction, width direction, and thickness direction for positioning a plurality of cleaved and divided magnet fragments in an aligned state. The manufacturing device further includes a first pressing means that presses the plurality of magnet fragments to the thickness direction reference surface from the thickness direction of a magnet body to align them in the thickness direction, and a second pressing means that presses the plurality of magnet fragments to the width direction reference surface from the width direction of the magnet body to align them in the width direction. An operational axis line of a pressing part of at least one of the first and second pressing means is arranged to be tilted such that it approaches the lengthwise direction reference surface at the side that abuts the magnet fragments.

First claim

The invention claimed is:

1. A device for manufacturing a field pole magnet body that is to be installed in a rotating electric machine and is manufactured by aligning and bonding a plurality of magnet fragments formed by cleaving and dividing a magnet body in a width direction, the device comprising:
a reference jig having reference surfaces in a lengthwise direction, a width direction, and a thickness direction for positioning the plurality of cleaved and divided magnet fragments in an aligned state with the cleaved faces facing each other,
a first pressing device configured to press the plurality of magnet fragments to the thickness direction reference surface from the thickness direction of the magnet body to align the magnet fragments in the thickness direction, and
a second pressing device configured to press the plurality of magnet fragments to the width direction reference surface from the width direction of the magnet body to align the magnet fragments in the width direction,
wherein an operational axis line of a pressing part of at least one of the first and second pressing devices is arranged to be tilted such that the pressing part approaches the lengthwise direction reference surface at a side that abuts the magnet fragments.

2. The device for manufacturing a field pole magnet body according to claim 1 , wherein the first and second pressing device first apply a pressing force on a magnet fragment that is near the lengthwise direction reference surface, and then sequentially apply a pressing force on each magnet fragment one by one moving away from the lengthwise direction reference surface.

3. A method for manufacturing a field pole magnet body that is to be installed in a rotating electric machine and is produced by aligning and bonding a plurality of magnet fragments formed by cleaving and dividing a magnet body in a width direction, the method comprising:
aligning the plurality of cleaved and divided magnet fragments within a reference jig with the cleaved surfaces facing each other,
pressing the plurality of aligned magnet fragments to a thickness direction reference surface of the reference jig from a thickness direction of the magnet body to align the magnet fragments in the thickness direction, and pressing the plurality of aligned magnet fragments to a width direction reference surface of the reference jig from a width direction of the magnet body to align the magnet fragments in the width direction, and
aligning the magnet fragments in a state in which the magnet fragments are laminated relative to a lengthwise direction reference surface by a component force toward the lengthwise direction reference surface of the magnet fragments generated by tilting an operational axis line of a pressing part of at least one of a thickness direction pressing means and a width direction pressing means such that the pressing part approaches the lengthwise direction reference surface at a side that abuts the magnet fragments.

4. The method for manufacturing a field pole magnet body according to claim 3 , wherein when aligning the plurality of magnet fragments in the thickness direction and the width direction by pressing the plurality of aligned magnet fragments to the thickness direction reference surface and the width direction reference surface of the reference jig from the thickness direction and the width direction of the magnet fragments, the pressing forces are first applied to a magnet fragment that is near the lengthwise direction reference surface, and then sequentially applied to each magnet fragment one by one moving away from the lengthwise direction reference surface.

Assignees

• Nissan Motor

Inventors

• Matsushita Yasushi
• Watanabe Hideki
• Sekikawa Takashi
• Nishimura Kimio
• Takaichi Kazuhiro
• Hori Akihisa
• Ohshima Takumi
• Kishi Michito
• Ishiguro Kunitomo

Classifications

• H02K1/276

  Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] · CPC title

• H02K15/03 Primary

  having permanent magnets · CPC title

• H01F7/0221

  Mounting means for PM, supporting, coating, encapsulating PM · CPC title

• Y10T29/5313

  Means to assemble electrical device · CPC title

• H02K15/00

  Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines · CPC title