scholarly journals DEVELOPMENT OF AN AUTOMATED DESIGN SYSTEM FOR FLEXIBLE AUTOMATED PRODUCTION

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
Еvhen PUKHOVSKYY

Design of flexible manufacturing  systems (FMS) of modern multi-level production is usually carried out on the basis of general rationing when using large recommendations.  At the same time, the specifics and features of a particular production are not always taken into account.  In such a design, the most important is the experience of the designer, which is not always based on modern methods of optimizing project solutions.  Therefore, the problem of creating automated design systems in the development of flexible automated productions (FAP), which use cost equipment with numerical control (CNC) is extremely urgent.    The development of automated design systems is based on the ideas of a systematic approach that determine different cycles of the process: design - production preparation - production. Information about the projected object is generated in the process of project development by different groups of users: researchers, designers, designers, technologists, production organizers. A multilevel, cyclical design process requires the use of such a volume of information that cannot be processed without the use of modern mathematical methods and calculated equipment. Therefore, it is extremely important to create automated gap design systems, which are marked by greater versatility, efficiency and possibility of development, improvement and adaptation to the conditions of various enterprises. Such requirements served as the basis for the creation of an automated design  system  , which allows to take into account a huge amount of information in the automatic cycle during the development of the project. The scientific novelty of the work is the development of an integrated automation system for the design of processing technology and the selection of elements of  FMS structures. At the same time, information unity with the system of technological training of production at the level of operation of  FMS is ensured.

Author(s):  
Jianjun Hu ◽  
Erik D. Goodman ◽  
Shaobo Li ◽  
Ronald Rosenberg

AbstractConceptual innovation in mechanical engineering design has been extremely challenging compared to the wide applications of automated design systems in digital circuits. This paper presents an automated methodology for open-ended synthesis of mechanical vibration absorbers based on genetic programming and bond graphs. It is shown that our automated design system can automatically evolve passive vibration absorbers that have performance equal to or better than the standard passive vibration absorbers invented in 1911. A variety of other vibration absorbers with competitive performance are also evolved automatically using a desktop PC in less than 10 h.


2006 ◽  
Vol 526 ◽  
pp. 139-144 ◽  
Author(s):  
Alfredo Sanz ◽  
E.M. Rubio Alvir ◽  
Carmen Martínez Murillo ◽  
M.A. Sebastián

Present work shows many of Virtual Reality (RV) developments carried out in manufacturing processes field by the collaboration between Aerospace Materials and Production Department at the UPM University and Manufacturing and Construction Engineering at the UNED university. Most of them have been directed towards Numerical Control Machine Tools field and towards equipment that configure automated manufacturing systems like Flexible Manufacturing Systems (FMS).


2018 ◽  
Vol 17 (02) ◽  
pp. 137-153 ◽  
Author(s):  
Ljubomir Lukic ◽  
Mirko Djapic ◽  
Cristiano Fragassa ◽  
Ana Pavlovic

Engineering machining processes realized in flexible machining systems is a highly complex task, especially since it encompasses complex optimization procedures apart from engineering. For a broad array of different workpieces produced in different series it is very difficult to engineer a manufacturing process for attaining maximum processing productivity with minimal production costs. This paper presents a developed postprocessor model enabling automatic generating of the numerical control code for all programs executed simultaneously in the production process on a greater number of machining centers. The model engrosses the different variants of tools in a machining center magazine, a different combination of elements of the machining mode, possibility of the most favorable layout of workpieces on pallets, compliance with the technological requirements in terms of simultaneous tool changes in machining center magazines, the required total processing time and minimal production costs. To that aim has been developed the postprocessor generator, as a program and software system, enabling all programs to be automatically updated based on the set up optimization strategy from tool changes, changes in cutting mode elements and technological operations. Such updated programs contain optimal technological parameters and provide minimal costs of production while at the same time the maximum utilization of tools during manufacture at an exactly specified time.


Author(s):  
Joel Johansson

For parts suppliers in the manufacturing industry, the process of preliminary production preparation and the subsequent calculation of offers are critical business activities. A vital part of production preparation is the design of fixtures and tooling necessary for many processes of metal forming. In order for a company to give quick responses to customer enquiries or changes in prior specifications, it would be highly beneficial with a degree of automation in this design process. This implies the development of a computer based system able to capture existing design procedures and associated knowledge for the classes of tooling required for the forming process. In this work, an implementation for the rotary draw bending of aluminum tubing has been done to exemplify how to develop an automated design system. The system is based on heuristic knowledge developed over many years of practical experience, knowledge analytically derived from fundamental theory found in scientific literature, and rules based on empirical data from trial manufacturing. The system applies knowledge to a given specification that a skilled engineer otherwise would do manually. The system output can be used to evaluate whether a tube is producible. The main idea behind the system is to use knowledge objects containing information on inputs, outputs, constraints and what software are used to implement the knowledge pieces. This approach makes the system highly flexible and allows for multiple types of knowledge that might overlap. When an offering calculation is wanted, the system is set to run applicable knowledge objects for presented input data. Other objects are run when an accurate calculation for detailing is wanted for a more detailed set of input data. The system is built on readily available commercial software packages connected with a simple Visual Basic .Net program. When building a system of this kind, it is essential that the knowledge documentation and structure be such that the functions of the system can be easily understood by the users of the system and by future developers. Aspects of user friendliness, transparency and scalability are addressed in the summary of this paper.


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