Spinning thickening forming method and spinning thickening forming apparatus

Patent metadata

Field	Value
Publication number	US-2016101455-A1
Application number	US-201414895426-A
Country	US
Kind code	A1
Filing date	May 9, 2014
Priority date	Jun 4, 2013
Publication date	Apr 14, 2016
Grant date	—

Abstract

A spinning thickening forming method is a method of, while rotating a plate including a center portion fixed to a fixing jig, increasing a thickness of a peripheral portion of the plate. Specifically, while locally heating the peripheral portion of the plate such that at least a portion of the plate which is adjacent to the fixing jig maintains stiffness, a forming roller is pressed against the peripheral portion of the plate to compress the peripheral portion in at least a direction perpendicular to a thickness direction of the peripheral portion.

First claim

1 . A spinning thickening forming method of, while rotating a plate including a center portion fixed to a fixing jig, increasing a thickness of a peripheral portion of the plate, the method comprising
while locally heating the peripheral portion of the plate such that at least a portion of the plate which is adjacent to the fixing jig maintains stiffness, pressing a forming roller against the peripheral portion of the plate to compress the peripheral portion in at least a direction perpendicular to a thickness direction of the peripheral portion and thereby increase a thickness of a peripheral portion at a position away from the fixing jig.

2 . The spinning thickening forming method according to claim 1 , wherein the peripheral portion of the plate is heated by high-frequency induction heating.

3 . The spinning thickening forming method according to claim 2 , wherein the heating by the high-frequency induction heating is performed by using a heater including:
a doubled circular-arc coil portion extending along the peripheral portion of the plate; and a core including a groove in which the coil portion is fitted, and covering the coil portion from an opposite side of the peripheral portion of the plate.

4 . The spinning thickening forming method according to claim 1 , comprising pressing the forming roller against the peripheral portion of the plate in a state where a rotation axis direction of the forming roller is in parallel with the thickness direction of the peripheral portion of the plate.

5 . The spinning thickening forming method according to claim 4 , wherein the forming roller includes:
a cylindrical pressing surface extending in the rotation axis direction of the forming roller; and a guide surface rising from at least one of end portions of the pressing surface.

6 . The spinning thickening forming method according to claim 5 , comprising pressing the forming roller against the peripheral portion of the plate in a pressing direction which is inclined relative to a direction perpendicular to the thickness direction of the peripheral portion of the plate, wherein
the guide surface is provided at one of the end portions of the pressing surface so as to form an obtuse angle together with the pressing surface, the one of the end portions being opposite to the other end portion located at a side toward which the pressing direction is inclined.

7 . The spinning thickening forming method according to claim 1 , wherein the plate is made of a titanium alloy.

8 . A spinning thickening forming apparatus comprising:
a fixing jig to which a center portion of a plate is fixed; a rotating shaft to which the fixing jig is attached; a heater configured to locally heat a peripheral portion of the plate; and a forming roller configured to be pressed against the heated peripheral portion of the plate in a pressing direction inclined relative to a direction perpendicular to a thickness direction of the peripheral portion, to compress the peripheral portion in at least a direction perpendicular to the thickness direction of the peripheral portion, wherein the forming roller includes: a cylindrical pressing surface extending in a rotation axis direction of the forming roller; and a guide surface rising from one of end portions of the pressing surface so as to form an obtuse angle together with the pressing surface, the one of the end portions being opposite to the other end portion located at a side toward which the pressing direction is inclined.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Sakane Yuto
• Imamura Yoshihide
• Mikami Kohei
• Iwasaki Hayato
• Ogishi Hideyuki
• Kitano Hiroshi

Classifications

• H05B6/102

  the metal pieces being rotated while induction heated · CPC title

• B21D22/14 Primary

  Spinning · CPC title

• B21D53/28

  gear wheels · CPC title

• B21D53/261

  pulleys · CPC title

• B21D37/16

  Heating or cooling · CPC title