The production of multi-layer insulation for spacecraft has formed a specialized unit production mode, which has made great progress in terms of production technology and methods.But because there are many types of products and low repetition rates, the production belongs to the production of single-piece small-volume products. Therefore, for a long time, The production of multi-layer insulation has problems such as long production cycle, high human resource consumption, and low production efficiency. Starting from the production mode, this paper studies how to further improve the multilayer production efficiency by reducing the variation of multi-layer insulation and improving the flexibility of the production operation system. Finally, multi-variety small batch unit production model was used for simulation verification.
In order to meet the requirements of high efficiency, synergy and refined management in the design and manufacturing process of spacecraft multi-layer insulation(MLI) components, the MLI design, CNC machining programming and MLI manufacturing process are modeled systematically, and the production management system is developed based on COM technology and C/S and B/S hybrid architecture layout method. The dynamic detection and analysis methods of working hours, workload and material consumption by integrating workflow technology and statistical control technology is proposed, and basic data can be obtained while completing planning process management, product status management, personnel capacity management, material status management, and file management.
In view of the low efficiency and unstable quality of the laying and quilting process of the multi-layer insulation of spacecraft, this paper designs an automatic laying and quilting integrated equipment, which adopts fixed base type. Laying and quilting share one platform and Y-direction drive. A buffer structure and a three-layer feeding structure were designed for the high flexibility of the polyester mesh and the complex combination of multi-layer insulation. In order to overcome the problem of fixed frame structure without fixed platform, the support belt system was designed, and the control system was adjusted to perform stepping quilting, in response to the special needs of multi-layer insulation for large stitching. The test results show that the spacecraft multi-layer insulation automatic laying and quilting equipment realizes high-speed and stable operation. The structure is reasonable and the design goal is achieved.
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