Method and apparatus for layup tooling
One example of the present disclosure relates to a tool for laying up composite material to form a workpiece having a target contour. The tool includes a support structure including an elongated member having a longitudinal axis, and support plates connected to the elongated member and spaced apart from each other along the longitudinal axis. The elongated member includes a metallic material. The tool also includes a non-metallic backing structure connected to the support plates, the non-metallic backing structure comprising a working surface that includes a backing contour complementary to the target contour.
1. A method of forming a tool for laying up composite material to form a workpiece having a target contour, the method comprising:
additively manufacturing a non-metallic backing structure comprising a working surface that includes a backing contour complementary to the target contour;
manufacturing a support structure comprising support plates and an elongated member; and
attaching the non-metallic backing structure to the support structure.
2. The method of claim 1 , wherein additively manufacturing the non-metallic backing structure comprises:
additively manufacturing plural backing-structure portions, and
joining the plural backing-structure portions to form the non-metallic backing structure.
3. The method of claim 1 , wherein manufacturing the support structure comprises subtractively manufacturing the support plates and coupling the support plates to the elongated member.
4. The method of claim 3 wherein the support plates are subtractively manufactured without machining any surface of the support plates.
5. The method of claim 3 , wherein coupling the support plates to the elongated member comprises:
allowing all but one or all of the support plates to float relative to the elongated member along a longitudinal axis of the elongated member with a sliding fit; and
restraining at least one of the support plates from rotating relative to the elongated member.
6. The method of claim 5 , wherein coupling the support plates to the elongated member further comprises:
inserting the elongated member through a first opening formed in at least one of the support plates;
positioning a first portion of a bushing support adjacent to the first opening and the elongated member;
positioning a second portion of the bushing support between the first opening and the elongated member, wherein the second portion is disposed opposite to the first portion about the elongated member; and
securing the first portion and the second portion of the bushing support to the at least one of the support plates.
7. The method of claim 5 , wherein coupling the support plates to the elongated member further comprises:
fixedly attaching at least one bracket to at least one of the support plates;
allowing the at least one bracket to float relative to the elongated member with the sliding fit along the longitudinal axis; and
restraining the at least one bracket from rotating relative to the elongated member.
8. The method of claim 1 , wherein:
additively manufacturing the non-metallic backing structure comprises forming ribs located on a surface opposite of the working surface, and
attaching the non-metallic backing structure to the support structure comprises securing the ribs to the support structure.
9. The method of claim 3 , wherein the support plates are subtractively manufactured by water-jet cutting the support plates.