The present invention provides a method as well as a tool (1, 48) for producing a T-stringer, in particular in the aircraft and spacecraft sector. The method is characterized by two lay-up strips (3, 4) being arranged on top of one another, wherein areas (5, 6) of the lay-up strips (3, 4) correspond
The present invention provides a method as well as a tool (1, 48) for producing a T-stringer, in particular in the aircraft and spacecraft sector. The method is characterized by two lay-up strips (3, 4) being arranged on top of one another, wherein areas (5, 6) of the lay-up strips (3, 4) corresponding to the stringer foot (60) that is to be formed, are spaced apart from one another by means of separation films (7, 8) and areas (14, 15) of the lay-up strips (5, 6) corresponding to a stringer web (61) come into direct contact with one another, in particular, forming a material bond. In a further method step, the lay-up strips (3, 4) are clamped at the areas (14, 15) corresponding to the stringer web (61) that is to be formed. In an even further step, the areas (5, 6) corresponding to the stringer foot (60) that is to be formed are folded open in opposite directions (28, 29) by means of a folding-open mandrel (25), and by means of a pressing roller (37) the areas (5, 6) are pressed against corresponding pressing surfaces (23, 24) of the clamping device (1) such that the areas (23, 24) are properly flush. Finally, the folded lay-up strips (3, 4) are cured to form the T-stringer that is to be produced. The method according to the invention has the advantage over the known method for producing T-stringers that a smaller number of steps is required to produce the T-stringer and can be automated easily.
대표청구항▼
1. Method for producing a T-stringer, in the aircraft or spacecraft sector, comprising the following steps: providing a first and a second lay-up strip;positioning a first separation film onto an area of the first lay-up strip corresponding to a stringer foot of the T-stringer that is to be formed,
1. Method for producing a T-stringer, in the aircraft or spacecraft sector, comprising the following steps: providing a first and a second lay-up strip;positioning a first separation film onto an area of the first lay-up strip corresponding to a stringer foot of the T-stringer that is to be formed, wherein the first separation film borders on an edge of the first lay-up strip;positioning a second separation film onto an area of the second lay-up corresponding to the stringer foot, wherein the second separation film borders on an edge of the second lay-up strip;positioning the second lay-up strip onto the first lay-up strip such that an area of the second lay-up strip corresponding to a stringer web of the T-stringer that is to be formed lies against an area of the first lay-up strip corresponding to the stringer web and that the first and second separation films lie against each other;folding the areas of the first and second lay-up strip corresponding to the stringer foot that is to be formed open in opposed directions, wherein the areas of the first and second lay-up strip, which correspond to the stringer web that is to be formed and which lie against each other, are clamped in a clamping device, wherein the areas of the first and second lay-up strip corresponding to the stringer foot project from the clamping device, and, thereafter, a folding-open mandrel is inserted between the first and second separation film for folding the areas of the first and second lay-up strip corresponding to the stringer foot open in opposed directions; andat least partially curing the first and second lay-up strip for producing the T-stringer. 2. Method according to claim 1, wherein the areas of the first and second lay-up strip, which correspond to the stringer foot that is to be formed and which are folded open, are pressed by means of a pressing roller moving in the longitudinal direction of the lay-up strips, against a surface of the clamping device, respectively, and lie flush with respect to each other. 3. Method according to claim 1, wherein directly after the folding open or after the pressing against the surfaces of the clamping device, the first and second separation film are removed. 4. Method according to claim 1, wherein the areas of the first and second lay-up strip, which correspond to the stringer foot that is to be formed and which are folded open, are machined prior to the at least partial curing. 5. Method according to claim 1, wherein the first and second lay-up strip are provided as prepreg material or dry fiber preforms. 6. Method according to claim 5, wherein the dry fiber preform is impregnated with a matrix after the folding open.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Woodring William J. (Bound Brook NJ) Gulino James A. (Joliet IL), Heat bondable asphaltic sound deadener.
Kondo, Junichi; Matsui, Nobuo, Method for producing fiber-reinforced composite semi-hardened product having joggle, and method for producing preformed structure using same.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.