Multi-directionally preformed braided part and three-dimension integrally braiding method thereof

The invention discloses a multi-directionally preformed braided part, which comprises at least two components having different forming directions. Fiber bundles inside the braided part run through thecomponents along different forming directions to form an integral structure. The intersection position of the components having different forming directions is provided with a through hole. The invention also provides a three-dimension integrally braiding method of the multi-directionally preformed braided part, which comprises: a step 1 of determining forming directions; a step 2 of determininga theoretical intersection position; a step 3 of determining a thread leading region and a thread adding region for theoretical intersection; a step 4 of braiding the first component, in which a fiberbundle passing the position of the thread leading region for theoretical intersection is led out and a leading-out end is left when the braiding reaches the position, and new fiber bundles prepared in advance are added to the