Sh-M. A.Ismailov, A. A.Djanmursaev., B. B.Yagyaeva AUTOMATION OF THE DESIGNING OF THE BIT-PARALLEL OPERATING DEVICES OF NUMERIC DATA ARRAY PROCESSING

Sh-M. A.Ismailov, A. A.Djanmursaev., B. B.Yagyaeva AUTOMATION OF THE DESIGNING OF THE BIT-PARALLEL OPERATING DEVICES OF NUMERIC DATA ARRAY PROCESSING

The questions of the automated designing of bit-parallel operating devices (BPOD), oriented to mass processing of the numeric information are considered in the report. The basis of the construction of BPOD structure is formed by a table-algorithmic principles, where the constant remembering devices (ROM) and programmable logic arrays (PLA) are used as decisive devices. The problem of automation of BPOD designing consists in ROM's and PLA's program tables as separate module, and also in construction on their basis single- and polydimensional BPOD, directed to the decision of the certain category of problems. The automation of the designing of the bit-parallel processors of numeric data arrays (NDA) processing mentions the following basic stages:

 definition of a way of NDA processing;

 definition of intermodular communications in the structure of single- and polydimensional (BPOD) and the choice of base modules necessary number;

 definition of hardware expenses for realization of one base module and whole BPOD structure;

 definition of temporary expenses for fulfillment of basic arithmetic operations by steps (the temporary cycle of step depends on time of reading of the information from the ROM and PLA);

 definition of word length of the entrance and target BPOD registers;

 formations of the tables of programming of base module memory elements;

Analytical dependences of temporary and hardware expenses of an offered structures with the methods of program table formation and definition of quantity of base modules for various ways of NDA processing are fixed in a basis of BPOD designing algorithm.

N.I.Khamets., L.V.Gubitch DEPENDENCE OF STRENGTH AND STRAIN PROPERTIES OF PLASTIC CASE PRODUCTS FROM RIBS' LOCATION

The application of the plastic details in various designs provides reduction of the cost and the labour-intensiveness of manufacturing of machines and devices, reduction of weight of a design at simultaneous improvement of their quality and reliability. The advantages of use of plastic in designs are completely shown only at correct use of their properties. Because of specific features of plastic as constructional materials at designing plastic products it is necessary to decide a lot of questions of designing, major of which is the choice of the basic design data of a detail and technological process of its manufacturing, final improvement of a design from the point of view of its adaptability to manufacture, at last, comparative technical and economic analysis of the designed product.

From numerous properties describing the plastic product the strength and strain properties are basic, as they provide preservation of form and sizes of a product at action of external loadings. Straining of plastic products, i.e. the change of their form and sizes under action of external loadings or owing to internal pressure, is frequently major factor determining their operational properties. Without the account the straining properties cannot correctly be picked up a material for manufacturing that or other product. As a rule, it is not enough attention are given these properties although the overwhelming part of the case details is made from plastic.

To increase rigidity and durability of the plastic details the strengthening of the especially loaded places or acting parts and sometimes on technological reasons in a detail design are provided ribs. Ribs allow to reduce section of separate elements of a detail to lower internal pressure in places of interface of walls of various section and also promote prevention shrikage or spoilage on cracks.

In the Institute of Engineering Cybernetics of the National Acadimy of Sciences of Belarus the researches of influence of the circuits of ribs arrangement on the strength and strain properties of the plastics products are conducted. The researches carry out on an example of the case products. The modern plastic case products have the complex geometrical form which influences the circuit of ribs arrangement. It is necessary to study efficiency of the circuits of ribs arrangement depending on external loadings and product form.

V. E.Gliznutsin CAD OF SMITHING PRODUCTS

The peculiar feature of smithing is its individual production. However, the sequence of technological operations is the same for any ordered product. The manufacturing process of smithing consists of the following operations:

- the designing of scetches;

- the making of a cardboard mock-up;

- the manufacturing of the elements of a smithing product;

- the fitting of a product in accordance with the approved project;

- the trimming;

- the fitting of a product at a customer.

To be more detailed, it is necessary to distinguish the stage of technological preparation of production. The designer has to carry out the following actions at this stage:

- the technological design and splitting of a product on elements;

- the merging of similar elements in groups;

- the elaboration of the technology of the production of elements;

- the elaboration of devices and tools.

While making a product the designer has to consider a lot of its possible artistic versions. Besides, it takes much time to depict a large number of similar repetitive elements. The designer has a vast opportunity to avoid monotonous actions and to spend more time on general artistic designing of products with the help of the Computer-Aided Design of Smithing Products (CAD SP) [1]. The analysis of the frequency of used elements shows, that more than 80 per cent of all elements of the smithing product are often reiterated. The application of CAD SP reduces the period of elaboration of a project on 40 per cent an average. That is an essential reserve to increase the labour capacity.

The system must provide the decrease of the cost of a designed product, the reduction of periods of designing and production, the optimization on the ground of coorelation" price - quality".

САD SP works in the interactive mode and realizes the following functions:

- the elaboration of the general global sketch of a smithing product;

- the creation of the detailed sketch of a smithing product by means of combination of the typed elements of the graphic library;

- the numerous copying of repetitive elements of a smithing product's pattern;

- the transformation (decrease, increase, compression, stretching, turning) of a sketch or its elements while choosing a variant;

- the output of a variant on the hard copy (printer or plotter).

The central place in the general structure of САD SP is taken by the graphic library of typed elements. It is based on the classification of elements according to the three attributes: the type of element, the technology of production, the type of cost [2,3].

The system is supposed to be made during the degree project by the students of Stamping Department of Lipetsk State Technical University. The introduction of the system is planned to be accomplished by LTD "Levsha", which main activity is smithing.

References

1. Арутюнов И.Е., Глизнуцин В.Е., Глизнуцина Е.С. Принципы создания системы искусственного интеллекта для проектирования технологических процессов листовой штамповки // Технологические проблемы машиностроительного производства. Межвузовский науч.-тех. сборник. Липецк, ЛГТУ, 1994 г.

2. И.Е. Арутюнов, В.Е. Глизнуцин , А.Д. Афонин Экономический аспект выбора маршрутной технологии // Международная конференция «Прогрессивные технологии обработки материалов» 17-18 сентября 1998 г. Минск, 1998.

1. 
   Kuznetsov L.A., Gliznutsin V.E., Gliznutsina E.S. The System Description of the Organization Financial Activities // Proc. of Intern. Conf. «Contribution of Cognition to Modelling». July 6-8. 1998. - Lyon, France. P. 2/9 - 2/11.