公开(公告)号：US20200079038A1

公开(公告)日：2020-03-12

申请号：US16125592

申请日：2018-09-07

Applicant: Bell Helicopter Textron Inc.

Inventor： Sylvain Tessier ,  Pascal Forget

IPC: B29C70/54 ,  B29C70/44

Abstract: There is disclosed a molding assembly including a mold having a first surface and an opposed second surface. The mold defines a cavity bounded by two side walls converging toward each other from the first surface toward the second surface. Two mandrels are each removably receivable in the cavity and have a first wall, a second wall opposed to the first wall, an inner wall, and an outer wall opposed to the inner wall. The inner walls face each other and define a gap therebetween for receiving a composite material to be cured. The outer walls are angled and each slidably engage a respective one of the two side walls. A method of co-curing a stiffener and a panel is also disclosed.

公开(公告)号：US10766211B2

公开(公告)日：2020-09-08

申请号：US15264136

申请日：2016-09-13

Applicant: Bell Helicopter Textron Inc. ,  National Research Council of Canada

Inventor： Marc Lauzon ,  Patrick Dupré ,  Marc-André Octeau ,  Pascal Forget ,  Steven Roy

IPC: B29C70/44 ,  B29C33/38 ,  B29C70/10 ,  B29L31/30 ,  B29K83/00 ,  B29C70/54 ,  B29K105/04 ,  B29K267/00

Abstract: A method of manufacturing a flexible element configured for pressing against composite material received on a mold surface of a mold during cure, including placing a porous material over the mold surface, forming a sealed enclosure containing the mold surface and the porous material, infusing a curable liquid material such as silicone in liquid form into the enclosure under vacuum and through the porous material, curing the liquid material to form the flexible element, and opening the enclosure and disengaging the flexible element from the mold. In a particular embodiment, the flexible element is a pressure pad.

公开(公告)号：US10507600B2

公开(公告)日：2019-12-17

申请号：US15264118

申请日：2016-09-13

Applicant: Bell Helicopter Textron Inc. ,  National Research Council of Canada

Inventor： Richard Gingras ,  Steven Roy ,  Marc-André Octeau ,  Pascal Forget

IPC: B29C33/30 ,  B29C70/34 ,  B29K105/08 ,  B29L31/08

Abstract: A method of manufacturing a monolithic component having internal wall(s), including separately placing uncured composite material on a mold parts, placing the mold parts on a support plate with a portion of the uncured composite material extending between and in contact with the adjacent mold parts, interconnecting the adjacent mold parts through a connection allowing limited relative movement on the support plate along a direction corresponding to a thickness of the uncured composite material therebetween, biasing the adjacent mold part toward each other along the limited relative movement to provide a compressive force on the uncured composite material extending therebetween, and curing the composite material to obtain the monolithic component with each internal wall being formed between adjacent mold parts. The bias causes the adjacent mold parts to move toward each other as the thickness of uncured material extending therebetween reduces during curing. A tool assembly is also discussed.