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Lecturer(s)
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Svobodová Radka, Ing. Ph.D.
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Gumerov Alexej, Ing. Ph.D.
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Straka Jan, prof. Ing. Ph.D.
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Erben Jan, Mgr. Ing. Ph.D.
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Lobaz Petr, doc. Ing. Ph.D.
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Course content
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The course is intended to give students a good insight into the following areas: mechanisms, basic facts; spur, bevel, worm gears; motion screws and nuts; chain drives; friction and belt drives; gears, basic facts. During the seminars students practice gearbox design and perform computations for typical gearboxes, both in the traditional manner and with the aid of computers; results are tested and verified in the laboratory. The lecture topics: 1. Transmission, basic facts. Direct-link (three-member) gears using shaped elements. Law of gearing. 2. Spur gearing, geometry characteristics of uncorrected external gearing. 3. Correction, division into individual wheels. Dimensions of corrected wheels, engagement line, engagement duration. Helical tooth geometry. 4. Geometry of direct gearing - internal gearing. 5. Building structure. Accuracy of gearing. Properties. 6. Knowledge for design and control, gear wheels materials. Force conditions in gearing. Dimensioning and strength check of spur gears. 7. Bevel gears. Geometry and dimensions. Engagement conditions, correction. Force conditions in gearing. Dimensional and strength check. 8. Screw gears, cylindrical. Theoretical background, geometry. Engagement ratios, efficiency. 9. Worm gears. Geometry, main dimensions of spinal and general worm. Efficiency. Force conditions in gearing. Dimensioning and strength check of worm gear. 10. Motion screw - motion nut. 11. Friction gears. Gears with indirect coupling (four members) using shaped elements. 12. Transfers with indirect link (4-member) using friction. 13. Gear mechanisms - gearboxes
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Learning activities and teaching methods
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Lecture supplemented with a discussion, Lecture with practical applications
- Contact hours
- 52 hours per semester
- Undergraduate study programme term essay (20-40)
- 30 hours per semester
- Preparation for comprehensive test (10-40)
- 30 hours per semester
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| prerequisite |
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| Knowledge |
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| to represent gear transmission mechanisms according to technical standards (technical drawing) |
| to use the dimensioning and tolerance prescriptions based on the knowledge of the part's function ( GPS - Geometrical Product Specification) |
| to use information about technical standards and design documentation of fundamental transmission mechanisms |
| to apply the topic introduction to the issue of engineering designing of structural groups |
| Skills |
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| to design (for specified load) priority functional dimensions of the transmission mechanism parts |
| to use the knowledge of properties of technical materials and theoretical knowledge of mechanics, elasticity and strength |
| to use theoretical methods for calculation of dimensional and for strength, stiffness and lifetime analysis of transmission mechanisms parts |
| Competences |
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| N/A |
| N/A |
| N/A |
| learning outcomes |
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| Knowledge |
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| to determine dimensions of the fundamental transmission mechanisms and gearboxes |
| to sketch the gearboxes shafts with transmission elements including their bearings |
| to perform checking calculations of proposed transmission mechanisms |
| Skills |
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| to apply technical drawing knowledge for sketching transmission mechanism assemblies |
| to apply knowledge of properties of technical materials, mechanics, strength and elasticity for the design of part dimensions of transmission mechanisms |
| to apply knowledge of properties of technical materials, mechanics, strength and elasticity for the complex analysis of part dimensions of transmission mechanisms |
| Competences |
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| N/A |
| N/A |
| N/A |
| teaching methods |
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| Knowledge |
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| Interactive lecture |
| Practicum |
| Skills |
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| Practicum |
| Competences |
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| Self-study of literature |
| assessment methods |
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| Knowledge |
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| Oral exam |
| Written exam |
| Skills |
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| Written exam |
| Oral exam |
| Competences |
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| Self-evaluation |
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Recommended literature
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Hosnedl, Stanislav; Krátký, Jaroslav. Příručka strojního inženýra : obecné strojní části. 2, Převodové mechanismy. Praha : Computer Press, 2000. ISBN 80-7226-202-5.
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Krátký, Jaroslav; Krónerová, Eva. Obecné strojní části 2 : základní a složené převodové mechanismy. 1. vyd. V Plzni : Západočeská univerzita, 2011. ISBN 978-80-261-0066-9.
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