Apparatus and method for manufacturing magnet segments constituting field pole magnetic body

Patent metadata

Field	Value
Publication number	US-9908255-B2
Application number	US-201314411715-A
Country	US
Kind code	B2
Filing date	Jun 12, 2013
Priority date	Jul 2, 2012
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

An apparatus for manufacturing magnet segments constituting a field pole magnetic body formed by cleaving a magnetic body at a plurality of scheduled cleaving parts is provided. The apparatus includes placing tables on which a magnetic body having a coating applied to an outer surface thereof is placed, a pressing unit that cleaves the magnetic body by pressing the magnetic body from an opposite side of an incision at a scheduled cleaving part arranged between two of the placing tables, and a cutting unit that cuts the coaling of the magnetic body present at the scheduled cleaving part after the magnetic body is cleaved, by applying a moment in a direction opposite to a moment generated in the magnetic body between the two placing tables at the time of cleaving. Cleaving divides the magnetic body into a magnet segment and an uncleaved magnetic body.

First claim

The invention claimed is:

1. A segment manufacturing apparatus for cutting an object placed on the apparatus, the apparatus comprising:
two placing tables that are aligned apart so as to provide a gap between the two placing tables, the two placing tables having supporting faces provided in a same plane respectively, the supporting faces being configured to support the object respectively in a bridge state;
a first mechanism configured to bend the object including a first pressing unit provided above the gap and configured to press an upper part of the object downwards so that a lower part of the object is pushed in the gap; and
a second mechanism configured to bend the object including
a pushing unit provided in the gap, the pushing unit configured to push upwards on the object so as to lift the object above the supporting faces of the two placing tables, and
second pressing units located above the two placing tables, respectively, the second pressing units configured to press the object downwards.

2. The segment manufacturing apparatus according to claim 1 , wherein
the first pressing unit is configured to press the object downwards toward the gap so as to bend the object.

3. The segment manufacturing apparatus according to claim 1 , wherein
the pushing unit is configured to push the object upwards, and the second pressing units are configured to push the object downwards toward the placing tables at the same time.

4. The segment manufacturing apparatus according to claim 1 , wherein
the pushing unit is configured to push the object upwards above the plane in which the supporting faces are provided, and
the two placing tables are configured to lower such that the pushing unit moves upwards above the plane in a relative manner.

5. The segment manufacturing apparatus according to claim 1 , wherein
the object comprises a coating applied to an upper surface thereof and an incision formed on a lower surface thereof.

6. The segment manufacturing apparatus according to claim 1 , wherein
the first mechanism is configured to cleave the object,
the pushing unit includes a projecting part having a tip that projects further, in an opposite direction, than supporting faces of the two placing tables; and
the second mechanism is configured to apply a moment in the opposite direction by pressing the object, which has been cleaved, in the opposite direction with the projecting part of the pushing unit in a state where lift of the object is regulated by the second pressing units.

7. The segment manufacturing apparatus according to claim 1 , wherein
the first mechanism is configured to cleave the object, and
one of the two placing tables on a side where the object is placed is configured to lower so as to apply a moment in an opposite direction after the object is cleaved.

8. The segment manufacturing apparatus according to claim 1 , wherein
the pushing unit comprises a die cushion.

9. The segment manufacturing apparatus according to claim 1 , wherein
the first pressing unit comprises a punch.

Assignees

• Nissan Motor

Inventors

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

Classifications

• B26D7/14

  by tensioning the work · CPC title

• B23D31/002

  Breaking machines, i.e. pre-cutting and subsequent breaking · CPC title

• Y10T225/201

  With other type severing means · CPC title

• B26D7/02

  with clamping means {(B26D7/018 takes precedence)} · CPC title

• H01F41/0253

  for manufacturing permanent magnets · CPC title