Unrestraint assembly method of plug-in type bundled bracket

Abstract

The invention provides a unrestraint assembly method of a plug-in type bundled bracket. The steps of preassembly-splitting-reset-splitting-reset are performed for a composite sandwich layer consisting of a bundled bracket, a middle frame and inner and outer reinforced plates; in the process, a technological cover is used for replacing a cover; on the basis of determining a positioning hole, a drill plate is guided to finish precise reaming positioning of a connecting hole near the side of the cover; the precisely reamed connecting hole near the side of the cover serves as positioning standard to determine the positions of remainder connecting holes; and finally, the unrestraint plug-in assembly of the bundle bracket is finished. The method prevents the limitation of the operation space caused by the cover, brings convenience for the drilling of the connecting hole near the side of the cover, realizes unrestraint drilling of the connecting holes in the bundled bracket, uses the precisely reamed connecting hole near the side of the cover as standard to prevent the positioning error caused by the use of a transition fit positioning shaft pin, and guarantees precise reset of the composite sandwich layer after the splitting; and the unrestraint assembly method is provided to the plug-in type bundled bracket.

Description

technical field [0001] The invention belongs to the field of aerospace, and in particular relates to an unconstrained assembly method of a plug-in binding support. Background technique [0002] In the current domestic aerospace products, as an important connecting piece connecting the core-level rocket body and the booster, the binding support has been widely used in the shells such as the first-stage box section of the launch vehicle. The existing binding support connection method generally adopts radial bolt connection: the binding support is assembled on the outside of the launch vehicle shell, and the radial bolt holes of the shell are usually made by using a radial drilling machine under the support, and then the binding support and The housing is radially screwed. [0003] With the continuous improvement of carrying capacity requirements, the new generation of large launch vehicles newly developed in my country has the characteristics of high performance and large car...

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