The development and production cycle of aero-engines is long, the variety of process equipment is large, and the quantity is large. The competition demand leads to the continuous upgrading of the engine, but the batch size is not large, and the production units form a pattern of batch production and new machine development.
The traditional production organization management mode has gradually shown that our efforts in the development of new machines are not satisfactory. The main performances are as follows: 1 The engineering conversion of the design drawings is not complete, and the subsequent change coordination cycle is long and difficult. 2 There are many technical problems in the design, process and tooling of new machine parts. There are often times when the feedback is not timely and the processing is not in place. 3 The new machine has a small production volume, and it needs to occupy the batch production resources during processing, and the production preparation is difficult, the economic benefit is low, and the production workshop is not motivated.
In view of the current problems in engine development, if the main parts of the engine are classified, they can be divided into: blades, discs, shafts, casings, ring parts, small and medium-sized components, nozzle valve parts, sheet metal stamping parts, gears, fasteners and There are 11 categories of catheters and so on.
We select the types of parts we want to develop, take the road of industrialization development, and establish a flexible manufacturing center with the development of category parts as the core to adapt to the development mode of multi-machine, single-piece, variable-batch and stick-flow production. In the era of instant and networked, in order to achieve higher and faster development of aero-engine manufacturing, it is necessary to use high-tech and take a new machine to develop a flexible manufacturing road.
Overall plan
1. Process Foundation Flexible manufacturing system is an intelligent manufacturing system that can adapt to the transformation of processing objects. The English abbreviation is FMS. Parts of the same category have the same processing route and the types of work involved. The flexible manufacturing center uses this similarity to determine the process according to the processing object, select the appropriate processing equipment and the storage and transportation system of the workpiece, tools and other materials, and control it by the planned operation support room, so it can automatically adjust and realize a certain range. The batch production of a variety of workpieces (ie, "flexible"), and can change the product in time to meet the development needs. The flexible manufacturing center combines both manufacturing and partial product management functions, so it can comprehensively improve production efficiency.
In short, the construction of the new machine to develop a flexible manufacturing center is based on the concept of engine engineering design, the design concept of the design intent, process technology, production planning, cost control.
2. Central organization management structure
The management structure framework is shown in Figure 1.
3. Engineering design concept divides design into engine technology design and engineering design. The engine technology design is responsible for the initial work of engine mapping, strength calculation, overall function design, and drawing, which is completed by professional design. Engineering design is an important process for the engineering analysis of the engine technical design drawings, the overall planning of the new machine development project, and the specific design intent. (After the completion of the technical design drawings, the project will be transferred to the contractor and managed by the contractor. When the engine model needs to be reconfigured, it will be transferred back to the professional design office.
Engineering design is the key stage in determining and controlling the development cost of new machines. The engineering design can make changes to the technical design drawings (subject to approval by professional design) without affecting engine performance and safety. The engineering design is implemented by the engine contractor and is an important means to control the processing cost and speed up the development process.
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