DESIGN-TECHNOLOGICAL PREPARATION OF PRODUCTION DEFLECTORS USING PULSE TECHNOLOGIES

2019

Авіаційно-космічна техніка та технологія, Vol 0, Iss 7, Pp 145-150 (2019)

The development of explosion punching processes is a rather complicated task for preparing the production of aircraft engines. The relatively large complexity and duration of production preparation, as well as the relatively high cost of the dies, require careful development of technological processes and an informed choice of a technically rational and cost-effective version of the technological process that corresponds to a certain scale of production. Even small further changes in technological processes usually lead to the processing of dies or the design and manufacture of new ones that require considerable time and are quite expensive. The design features of the thin-sheet part, which is an integral part of the D-136 turboshaft engine, which is used on Mi-26 heavy transport helicopters, are analyzed. The deflector has a domed shape, stiffening ribs are provided for stiffening the shape of the part - axisymmetric. After stamping-hoods, it is necessary to apply machining (drilling holes on the flange for mounting the deflector). The accuracy of the part is determined by the accuracy of processing the working surface of the matrix. Deviation of the part profile from the working profile of the matrix depends on the dimensions of the part. The technological process of stamping by the explosion of a deflector is developed, which consists of several stages: analysis of the structural and technological features of the part; determination of the shape and size of the workpiece, as well as the consumption of material; the choice of a rational technological process that ensures the manufacture of the necessary parts; determination of the type of equipment needed; selection of type and technological scheme of the stamp, and determination of the complexity of manufacturing stamped parts. A mathematical for describe the design of the deflector, which consists of several levels of complexity model is developed. Each level of the design description is responsible for its own stage of the technological process. Based on the developed model, an algorithm and a program for calculating the parameters of the technological process are created.

article

English
Ukrainian

National Aerospace University «Kharkiv Aviation Institute», 2019.

штампування вибухом, технологічність конструкції, математична модель, рівні опису, авіаційний двигун, дефлектор, Motor vehicles. Aeronautics. Astronautics, TL1-4050