Apparatus and method for manufacturing field-pole magnet

Patent metadata

Field	Value
Publication number	US-9796150-B2
Application number	US-201214234746-A
Country	US
Kind code	B2
Filing date	Jun 20, 2012
Priority date	Jul 27, 2011
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A field-pole magnet manufacturing apparatus manufactures magnet pieces that constitute a field-pole magnet arranged in a rotary electric machine by fracturing the magnet. This manufacturing apparatus includes: a support unit on which the magnet is placed; a fracture unit that is arranged opposite to the support unit across the magnet and is configured to fracture the magnet by pressing the magnet while in contact with the magnet; and a powder removal unit that is configured to remove crush powder produced by fracture of the magnet.

First claim

The invention claimed is:

1. A field-pole magnet manufacturing apparatus for manufacturing magnet pieces that constitute a field-pole magnet arranged in a rotary electric machine by fracturing a magnet, the apparatus comprising:
a pair of support units on which the magnet is placed;
a fracture unit that is arranged opposite to the pair of support units across the magnet, the fracture unit including a blade configured to fracture the magnet by pressing the blade against the magnet; and
a powder removal unit that is arranged under the magnet and between the pair of support units and is configured to remove crush powder produced by fracture of the magnet.

2. The field-pole magnet manufacturing apparatus according to claim 1 , further comprising:
an elevator unit arranged such that the elevator unit can be raised and lowered between the pair of support units, an upper end of the elevator unit opposing a lower surface of the magnet, the elevator unit being lowered in synchronization with lowering of a site of fracture at the time of fracturing the magnet, and the elevator unit being raised upon completion of the fracture so as to push back the site of fracture, wherein
the powder removal unit is provided to the elevator unit.

3. The field-pole magnet manufacturing apparatus according to claim 1 , wherein
the powder removal unit is a suction unit that is configured to suction the crush powder.

4. The field-pole magnet manufacturing apparatus according to claim 1 , wherein
the pair of support units is a pair of projections, and
the pair of projections blows gas from distal end portions thereof that come into contact with the magnet.

5. The field-pole magnet manufacturing apparatus according to claim 1 , further comprising:
support projections arranged at a predetermined interval on an outer side of the pair of support units so as to support the magnet in a pre-fracture state;
a positioning unit that is configured to set a position of the magnet by sequentially pushing a distal end side of the magnet supported by the support projections onto the pair of support units; and
a cleaning unit that is configured to clean upper surfaces of the support projections or the pair of support units with blown gas, the upper surfaces being exposed to an upper side at a rear end side of the magnet pushed by the positioning unit.

6. A field-pole magnet manufacturing method for manufacturing magnet pieces that constitute a field-pole magnet arranged in a rotary electric machine by fracturing a magnet, the method comprising:
placing the magnet on a pair of support units;
fracturing the magnet by pressing a blade against the magnet from a side opposite to the pair of support units; and
removing crush powder produced by fracture of the magnet from a portion below the magnet and between the pair of support units.

7. The field-pole magnet manufacturing method according to claim 6 , further comprising:
causing an upper end of an elevator member to oppose a lower surface of the magnet in a pre-fracture state, the elevator member being arranged such that the elevator member can be raised and lowered between the pair of support units;
lowering the elevator member in synchronization with lowering of a site of fracture at the time of fracturing the magnet; and
raising the elevator member upon completion of the fracture so as to push the fractured magnet back to a position of the magnet in the pre-fracture state.

8. The field-pole magnet manufacturing method according to claim 6 , wherein
the pair of support units is a pair of projections, and
the pair of projections blows gas from distal end portions thereof that come into contact with the magnet.

9. The field-pole magnet manufacturing method according to claim 6 , wherein
the magnet in the pre-fracture state is supported by support projections that are arranged at a predetermined interval on an outer side of the pair of support units, and
the field-pole magnet manufacturing method further comprises:
setting a position of the magnet by sequentially pushing a distal end side of the magnet supported by the support projections onto the pair of support units; and
cleaning upper surfaces of the support projections or the pair of support units with blown gas, the upper surfaces being exposed to an upper side at a rear end side of the pushed magnet.

10. A field-pole magnet manufacturing apparatus for manufacturing magnet pieces that constitute a field-pole magnet arranged in a rotary electric machine by fracturing a magnet, the apparatus comprising:
a pair of support means for placing the magnet thereon;
a fracture means, arranged opposite to the pair of support means across the magnet, for fracturing the magnet, the fracture means including a blade configured to press against the magnet to fracture the magnet; and
a powder removal means, arranged under the magnet and between the pair of support means, for removing crush powder produced by fracture of the magnet.

Assignees

• Koike Yasuhisa
• Nishimura Kimio
• Takeuchi Hiroharu
• Ishiguro Kunitomo
• Hasegawa Kiyoshi
• Izawa Yoshinori
• Nissan Motor

Inventors

• Koike Yasuhisa
• Nishimura Kimio
• Takeuchi Hiroharu
• Ishiguro Kunitomo
• Hasegawa Kiyoshi
• Izawa Yoshinori

Classifications

• H02K15/03

  having permanent magnets · CPC title

• H01F41/0253

  for manufacturing permanent magnets · CPC title

• B28D7/02

  for removing or laying dust, e.g. by spraying liquids; for cooling work · CPC title

• B28D1/222 Primary

  by pressing, e.g. presses · CPC title

• B26F3/002

  Precutting and tensioning or breaking · CPC title