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1. US20160325332 - Method and apparatus for forming elliptical hollow cylinder

官庁 アメリカ合衆国
出願番号 15103350
出願日 03.12.2014
公開番号 20160325332
公開日 10.11.2016
特許番号 09821358
特許付与日 21.11.2017
公報種別 B2
IPC
B21D 22/14
B処理操作;運輸
21本質的には材料の除去が行なわれない機械的金属加工;金属の打抜き
D本質的には材料の除去が行われない金属板,金属管,金属棒または金属プロフィルの加工または処理;金属の押抜き
22型打ち,へら絞り,または深しぼりによる切削しない成形
14へら絞り
B21D 41/04
B処理操作;運輸
21本質的には材料の除去が行なわれない機械的金属加工;金属の打抜き
D本質的には材料の除去が行われない金属板,金属管,金属棒または金属プロフィルの加工または処理;金属の押抜き
41管端の径を変化させるための方法の応用
04減少させるもの;閉じるもの
CPC
B21D 22/14
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
22Shaping without cutting, by stamping, spinning, or deep-drawing
14Spinning
B21D 41/04
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
41Application of procedures in order to alter the diameter of tube ends
04Reducing; Closing
出願人 CALSONIC KANSEI CORPORATION
発明者 Dai Kawashima
Shinji Hioki
Shuji Tokita
代理人 Foley & Lardner LLP
発明の名称
(EN) Method and apparatus for forming elliptical hollow cylinder
要約
(EN)

According to a method for forming an elliptical hollow cylinder, part of the elliptical hollow cylinder is formed into a circular hollow cylindrical shape by spinning. The forming method includes a first forming process for forming the part of the elliptical hollow cylinder into a circular hollow cylindrical shape by using an inside roller, and a second forming process for reducing a diameter of the part formed into the circular hollow cylindrical shape in the first forming process by using an outside roller. According to the forming method, it becomes possible to shorten time required for forming the part of the elliptical hollow cylinder into a circular hollow cylindrical shape by spinning.