Fundamentals of engineering design

Course guarantor:

Lecturer:

Tutor:

Supervisor:

Department of Designing and Machine Components

Synopsis:

The aim of the course is to teach students how to express themselves graphically, to improve their spatial imagination, and to explain the basic principles of assembling machine parts and their relationships, i.e., the fundamentals of ISO GPS (Geometrical Product Specification), specifically the tolerancing of linear and angular dimensions, surface texture specification, geometric tolerancing, and dimensional chains. Students will also practice working with technical documentation and sorting information (searching in catalogues and standards). During practical sessions, they will encounter hands on examples of assigned tasks, workshop inspections, and similar activities.

Requirements:

-2 pencils: (a mechanical pencil with HB lead; a clutch pencil with B or 2B lead). An eraser.

-Knowledge of high school mathematics.

-For more details, see: https://moodle-vyuka.cvut.cz/link/course.php?cx=2132019

Syllabus of lectures:

Technical drawings (types, scales, formats, line types, folding of drawings); Orthographic projection (ISO E, ISO A); Introduction to modern engineering design in the 21st century.

Part and assembly drawings, technical report, bibliographic citations. Standardization of technical documentation. Title block. Product life cycle (cycle phases, definitions).

Technical representation (sections and sectional views; interruptions/shortening of component views; use of symmetry, sketching).

Dimensioning (main principles of dimensioning; dimension, extension and reference lines; writing dimensions; dimensioning systems; specifying dimensions on drawings; dimensioning of basic geometric features; representation and dimensioning of standardized elements).

Representation and dimensioning of keyways and splines. Specification of edge conditions on drawings.

Representation and dimensioning of purchased parts. Standardized semi-finished products.

Nonstandardized semi-finished products. Drawings of castings, forgings, and weldments. Weld symbols.

Representation and dimensioning of threads, bolts, nuts, and washers. Screw joints. Thread tolerancing. Dimensioning and tolerancing of threads; representation of tolerance zones.

Basic overview of ISO GPS (Geometrical Product Specifications).

ISO GPS Tolerancing of linear and angular dimensions.

Fits between hub and shaft.

ISO GPS Geometrical and form tolerancing basic rules, geometric tolerances of form, orientation, runout, and position.

ISO GPS Surface texture tolerancing basic parameters (profile and areal methods).

Syllabus of tutorials:

Introduction

TASK No. 1 Sketch of Common Part No. 01 (planar part made from a standardized semi finished product) CAD training

TASK No. 1 Sketch of Common Part No. 02 (rotational part made from a standardized semi finished product) CAD training

TASK No. 1 Sketch of Common Part No. 03 (rotational part with a planar surface /hexagon or square/ made from a standardized semi finished product)

TASK No. 2 Reverse Engineering (real component) Application of dimensional tolerances

TASK No. 2 Reverse Engineering (real component) Application of surface roughness

TASK No. 2 Reverse Engineering (real component) Application of geometric tolerances

TASK No. 3 Screw joints assemblies

TASK No. 3 Screw joints assemblies

TASK No. 4 Assembly drawing of a gear pair with bill of materials

TASK No. 4 Assembly drawing of a shafthub connection with bill of materials

Course summary examples

Credit / final assessment

Study Objective:

To be able to express oneself graphically within reasonable limits (necessary for all university level technical subjects) as a fundamental communication tool for mechanical engineers. To train spatial imagination. To acquire the knowledge and skills required for follow up courses. To decompose machine parts into basic geometric shapes component analysis. To unify knowledge related to the creation of technical drawings (the philosophy of representation, dimensioning and tolerancing as described within ISO GPS). To establish the core set of elementary knowledge (the starting foundation) for every mechanical engineer, including the basics of CAD. To represent and dimension geometrically diverse components gradually increasing complexity while considering the function of each part.

Study materials:

1.Petr, K. Electronic materials for the subject Engineering Design MOODLE, ČVUT v Praze. Web: https://moodle-vyuka.cvut.cz/link/course.php?cx=2132019

2.Petr, K. STROJÍRENSKÉ KONSTRUOVÁNÍ: tvorba výkresové dokumentace dle ISO norem. 1. vydání. Praha: České vysoké učení technické v Praze, Česká technika-nakladatelství ČVUT, 2023. 173 stran. ISBN 978-80-01-06715-4.

3.Leinveber, J. a Vávra, P. Strojnické tabulky: učebnice pro školy technického zaměření. Šesté vydání. Úvaly: Albra, 2021. xv, 943 stran. ISBN 978-80-7361-124-8. (nebo novější)

Note:

Further information:

https://moodle-vyuka.cvut.cz/link/course.php?cx=2132019

No time-table has been prepared for this course

The course is a part of the following study plans: