Machine parts. Course design

2021 ◽  
Author(s):  
Vladimir Ovtov

The textbook discusses the methodology of course design of general-purpose drives with a single-stage gearbox (cylindrical, conical and worm) and a V-belt or chain transmission. The procedure for calculating gears and constructing assembly drawings of gearboxes is shown, the development of specifications using the COMPASS-3D computer-aided design system is described. Examples of the design of drawings of the general type of the drive, assembly drawings of gearboxes and working drawings of parts of various types of gearboxes are given. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for independent work of students of engineering specialties studying in the bachelor's degree and specialty.

2019 ◽  
Author(s):  
Александра Смык ◽  
Aleksandra Smyk ◽  
Галина Тимофеева ◽  
Galina Timofeeva ◽  
Татьяна Ткачева ◽  
...  

The manual is intended for independent work of students of technical universities and other engineering universities associated with the mastery of the basic methods of solving physical problems. Meets the requirements of the Federal state educational standards of higher education of the last generation in the discipline "Physics" for natural science and technical areas of bachelor's degree. It can be used both by students for self-preparation and development of a course of physics, and by teachers for preparation for occupations, and also by all interested in physical bases of natural science.


Author(s):  
B.M. Slavin ◽  
◽  
I.A. Kozlova ◽  
R.B. Slavin ◽  
◽  
...  

The article deals with the implementation of information technologies in accordance with the Federal State Educational Standard when students of Astrakhan universities study the course "Engineering Graphics" during distance learning, further informatization of engineering education. To ensure a high level of modern production, the priority task is to improve the teaching methods of geometric and graphic disciplines. Along with the traditional execution of drawings, modern computer-aided design systems should be consistently applied to achieve an appropriate level of information literacy, which will ensure that students acquire the necessary professional competencies.


2021 ◽  
Author(s):  
Svetlana Pazuhina

The educational and methodological manual on the discipline "Psychological and pedagogical theories and technologies of primary education" includes the development of practical classes; a set of tasks and exercises of different types for performing in the course of classroom and extracurricular work in subgroups, pairs, individually; a set of diagnostic and control and evaluation materials. Using the tasks developed by the authors in the course of organizing independent work will allow you to build an individual learning trajectory for each student, implement a differentiated approach in practice, introduce modern technologies for evaluating the educational achievements of future teachers and identifying the level of professional competencies. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of higher educational institutions studying in the bachelor's degree programs "Pedagogical education", "Psychological and pedagogical education".


Author(s):  
A. N. Bozhko

Computer-aided design of assembly processes (Computer aided assembly planning, CAAP) of complex products is an important and urgent problem of state-of-the-art information technologies. Intensive research on CAAP has been underway since the 1980s. Meanwhile, specialized design systems were created to provide synthesis of assembly plans and product decompositions into assembly units. Such systems as ASPE, RAPID, XAP / 1, FLAPS, Archimedes, PRELEIDES, HAP, etc. can be given, as an example. These experimental developments did not get widespread use in industry, since they are based on the models of products with limited adequacy and require an expert’s active involvement in preparing initial information. The design tools for the state-of-the-art full-featured CAD/CAM systems (Siemens NX, Dassault CATIA and PTC Creo Elements / Pro), which are designed to provide CAAP, mainly take into account the geometric constraints that the design imposes on design solutions. These systems often synthesize technologically incorrect assembly sequences in which known technological heuristics are violated, for example orderliness in accuracy, consistency with the system of dimension chains, etc.An AssemBL software application package has been developed for a structured analysis of products and a synthesis of assembly plans and decompositions. The AssemBL uses a hyper-graph model of a product that correctly describes coherent and sequential assembly operations and processes. In terms of the hyper-graph model, an assembly operation is described as shrinkage of edge, an assembly plan is a sequence of shrinkages that converts a hyper-graph into the point, and a decomposition of product into assembly units is a hyper-graph partition into sub-graphs.The AssemBL solves the problem of minimizing the number of direct checks for geometric solvability when assembling complex products. This task is posed as a plus-sum two-person game of bicoloured brushing of an ordered set. In the paradigm of this model, the brushing operation is to check a certain structured fragment for solvability by collision detection methods. A rational brushing strategy minimizes the number of such checks.The package is integrated into the Siemens NX 10.0 computer-aided design system. This solution allowed us to combine specialized AssemBL tools with a developed toolkit of one of the most powerful and popular integrated CAD/CAM /CAE systems.


2011 ◽  
Vol 109 ◽  
pp. 711-714
Author(s):  
Ying Jiang ◽  
Jie Liu

Secondary develop system can realize design automation of the common parts, so that software system can automatically inquire the chart and get data, then this could really release design personnel and improve the design efficiency. By secondary develop system of stirred tank users can respectively carry on the design according to their own needs. So secondary develop system has the function of automatic generation graphics, and can generate CAD drawings complying with the design requirement, so it reflected the intelligent performance of the design system. Secondary develop system is able to complete the automatic design of common parts, and can greatly improve the quality and efficiency of design, so it has very important use value. This design realizes the function of automatic graphics generation of transmission of stirred tank, and can generate structure design of common belt wheel.


Author(s):  
I.I. Dokuchaev

The series of publications was prepared on the basis of a teaching manual addressed to 10th grade schoolchildren of schools studying the integrative course “Social Studies” (section “Man and Society”), and is a set of materials for independent work. The content of the manual fully meets the requirements of the Federal State Educational Standards of Basic General Education and work programs for secondary (complete) education in social studies. The presented theoretical and practical material reveals the main aspects of social life: the essence and functional characteristics of consciousness and activity, ideas about society and social institutions as a system, types of societies, views on culture as a cumulative spiritual experience and “collective memory”, its main institutions — science, religion, morality, education, art. Particular attention is paid to the definition of social progress and global problems of mankind.


2021 ◽  
Author(s):  
Anna Voroncova ◽  
Tat'yana Sutyagina ◽  
Oksana Pavlova ◽  
Elena Tihomirova ◽  
Anna Samohvalova ◽  
...  

The requirements of the federal state educational standard of primary general education to the content, technologies and methods of the educational process in primary grades are disclosed. Special attention is paid to the characteristics of the system-activity approach, the technologies of primary education (problem-based learning, developmental learning, activity technology, project method, blended learning, etc.) are highlighted. The methods of teaching all the main academic subjects are presented in detail and concretely. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of higher educational institutions studying under bachelor's degree programs in the areas of training 44.03.01 "Pedagogical education" and 44.03.05 "Pedagogical education (with two training profiles)".


Author(s):  
А.И. Гайкович ◽  
С.И. Лукин ◽  
О.Я. Тимофеев

Процесс создания проекта судна или корабля рассматривается как преобразование информации, содержащейся в техническом задании на проектирование, нормативных документах и знаниях проектанта, в информацию, объем которой позволяет реализовать проект. Проектирование может быть представлено как поиск решения в пространстве задач. Построение цепочки последовательно решаемых задач составляет методику проектирования. Проектные задачи могут быть разбиты на две группы. Первая группа ‒ это полностью формализуемые задачи, для решения которых есть известные алгоритмы. Например, построение теоретического чертежа по известным главным размерениям и коэффициентам формы. Ко второй группе задач можно отнести трудно формализуемые или неформализуемые задачи. Например, к задачам этого типа можно отнести разработку общего расположения корабля. Важнейшим инструментом проектирования современного корабля или судна является система ав­томатизированного проектирования (САПР). Решение САПР задач первой группы не представляет проблемы. Введение в состав САПР задач второй группы подразумевает разработку специального ма­тематического аппарата, базой для которого, которым является искусственный интеллект, использующий теорию нечетких множеств. Однако, настройка искусственных нейронных сетей, создание шкал для функций принадлежности элементов нечетких множеств и функций предпочтений лица принимающего решения, требует участие человека. Таким образом, указанные элементы искусственного интеллекта фиксируют качества проек­танта как специалиста и создают его виртуальный портрет. The process of design a project of a ship is considered as the transformation of information contained in the design specification, regulatory documents and the designer's knowledge into information, the volume of which allows the project to be implemented. Designing can be represented as a search for a solution in the space of problems. The construction of a chain of sequentially solved tasks constitutes the design methodology. Design problems can be divided into two groups. The first group is completely formalizable tasks, for the solution of which there are known algorithms. For example, the construction of ship's surface by known main dimensions and shape coefficients. Tasks of the second group may in­clude those which are difficult to formalize or non-formalizable. For example, tasks of this type can include develop­ment of general arrangement of a ship. The most important design tool of a modern ship or vessel is a computer-aided design system (CAD). The solu­tion of CAD problems of the first group is not a problem. Introduction of tasks of the second group into CAD implies development of a special mathematical apparatus, the basis for which is artificial intelligence, which uses the theory of fuzzy sets. However, the adjustment of artificial neural networks, the creation of scales for membership functions of fuzzy sets elements and functions of preferences of decision maker, requires human participation. Thus, the above elements of artificial intelligence fix the qualities of the designer as a specialist and create his virtual portrait.


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