发明名称 |
Method and apparatus for forming a turbofan mixer |
摘要 |
The method for forming a turbofan mixer comprises providing a single monolithic and generally flat annular sheet metal blank, providing a die surface substantially corresponding in shape to a turbofan mixer shape, positioning the blank with reference to the die surface, and forcing the blank against the die surface to transform the blank into a monolithic turbofan mixer. |
申请公布号 |
US9616484(B2) |
申请公布日期 |
2017.04.11 |
申请号 |
US200812337714 |
申请日期 |
2008.12.18 |
申请人 |
PRATT & WHITNEY CANADA CORP. |
发明人 |
Gekht Eugene;Mills Danny |
分类号 |
B21D53/92;B21D13/02;B21D51/10 |
主分类号 |
B21D53/92 |
代理机构 |
Norton Rose Fulbright Canada LLP |
代理人 |
Norton Rose Fulbright Canada LLP |
主权项 |
1. A method of forming a turbofan mixer, the method comprising:
providing a single monolithic and generally flat annular sheet metal blank; providing a die surface substantially corresponding in shape to a turbofan mixer shape, the die surface including outwardly-projecting and circumferentially disposed lobes, each two adjacent of said lobes having a respective channel therebetween; positioning the blank with reference to the die surface by aligning a hole of the annular blank with an end of the die surface; forcing the entire circumference of blank against the die surface with the end of the die surface aligned with the hole by pressing a plurality of strikers against the blank substantially simultaneously to transform the blank into a tubular monolithic turbofan mixer having a plurality of circumferentially-disposed lobes on its circumferentially-outer surface; and removing the die surface from contact with a circumferentially-inner surface of the tubular monolithic turbofan mixer. |
地址 |
Longueuil CA |