Course: Machine Parts and Mechanisms I

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Course title Machine Parts and Mechanisms I
Course code KST/CSI
Organizational form of instruction Lecture + Lesson
Level of course Bachelor
Year of study not specified
Semester Summer
Number of ECTS credits 5
Language of instruction Czech, English
Status of course Compulsory
Form of instruction Face-to-face
Work placements Course does not contain work placement
Recommended optional programme components None
Course availability The course is available to visiting students
Lecturer(s)
  • Pešík Lubomír, prof. Ing. CSc.
  • Petrů Michal, doc. Ing. Ph.D.
  • Mazač Martin, Ing. Ph.D.
  • Jírová Radka, Ing.
Course content
1st General principles for design of mechanical parts. Classification of operating loads. Determining the shape and size of components, choice of mode of production and material components. Methods of designing machine parts loaded variable voltage. 2nd Fatigue strength. Basic diagrams of limit states. Life of machine parts. Notch strength-tion. Factors influencing the ultimate value of the voltage. Determination of safety factors. The finite element method in strength calculations. 3rd Friction belt drives. Flat and V belts. Geometry and force conditions. 4th Chain drives. Types of chains. Kinematics and dynamics of chain transfer. 5th Mechanical transmission, gear ratio, efficiency and choice of type of transfer. Transfer gears. Fundamentals of involute gearing. Base and production profile of toothed comb. Geometry Ozu-beni front wheel with straight teeth. Undercutting the base of the tooth. Minimum correction. 6th Front gears with external and internal gears. The duration of the shot. Correction for gearing required distance tub axis gearing. Bevel gears with straight teeth. Geometry, gearing ratios. 7th Force ratios in the gear mesh spur and bevel gears. Principle of calculation of strength gear and bevel helical gears. Worm gears. 8th Design of shafts and axles. Strength, deformation and dynamic criteria. 9th Rolling bearings. Design, durability, dynamic and static load, equivalent dynamic load and speed limits Influence of operating temperature on bearing life. 10th Joining machine parts. Classification of joints and mechanical fasteners součástí.Spojování shaft and hub. Clamping connection. Connecting wedges and feathers. Splined joints. Pins and pins. 11th Pressed connection. Load capacity, choice of storage and strength tests. Fatigue molded joints. 12th Threaded joints and connecting bolts. Bolted joints loaded transverse force. Fitted bolts. Rotary shaft coupling. Bolted joints loaded longitudinal force. Stiffness screws and associated components. 13th Welded joints. Butt and fillet welds, the nominal voltage and holidays. Welds exposed to variable loads. 14th Flexible connections. Characteristics of spring. Proposal for a cylindrical helical coil spring compression and tension. Exercise Exercise lectured support issues with an emphasis on applications in real structures. The form of exercise is a seminar with a significant creative work on individual assignments for work. 1st - 2 Design and strength check of machine components under constant and variable voltages. The fatigue strength of machine parts. Diagrams of limiting conditions. 3 to 4 Belt and chain drives. 5 to 6 Gears front with straight involute teeth. Semester work. 7th Bevel gears with straight teeth. 8th Stress analysis of gear. Worm gears. 9th Roller bearings, design, calculation. 10th - 11 Calculation and design of the shaft. Joining with the shaft. Pens, spline joints, clamp connections. molded joints. 12th - 13 Bolts and screws group. Rotary shaft coupling. 14th Welded joints. Butt and fillet welds carrier. Poslech Fonetický přepisSlovník - Zobrazit podrobný slovníkPřekladač Google pro moje:VyhledáváníVideaE-mailTelefonChatFirmyO Překladači GoogleVypnout okamžitý překladOchrana osobních údajůNápověda ?2010Nástroje pro firmyTranslator ToolkitO Překladači GoogleBlogOchrana osobních údajůNápověda>

Learning activities and teaching methods
Monological explanation (lecture, presentation,briefing)
Learning outcomes
1. General principles of design and dimensioning of machine parts, static and dynamic loading, fatigue and life of machine parts. 2. Transmission mechanisms. Classification, gear ratio, efficiency and choice of gear type. Toothed gears. Basic theory of involute teeth. 3. Basic profile of toothed ridge, production ratios. Geometry of the front toothing of the front wheel gear. Minimum tooth correction. Cutting toe heel. Minimum correction. 4. Sliding ratios. Toothed gears with external toothing. 5. Duration of the shot, specific slip. Conical gears with straight teeth. Spare gears. Strengths. 6. Belt gears with flat, wedge and toothed belt. Geometry and power ratios. 7. Friction bond. Minimum prestress. 8. Chain transmissions. Geometry and power ratios. 9. Transfer kinematics. 10. Shaft and hub connections. Pins, wedges and grooves. 11. Screw connections. Pressure joints and clamps. Welded joints. 12. Roller, roller and tapered roller bearings and their deposition. 13. Equation of durability. Strengths. Sliding bearings. 14. Flexible connections. Springs. Load characteristics and stiffness. Design of cylindrical helical-springs compression and traction.
Students obtain knowledge in given course in accordance with requirements and sourse programme.
Prerequisites
unspecified

Assessment methods and criteria
Combined examination

Credit: necessary credit from subject Elasticity and Strenght I, compulsory active attedance at seminars, working-out and defence of semestral work " Exam: written and oral
Recommended literature
  • Bureš, M. Ozubená kola a soukolí, Skripta. Liberec, TU, 2007.
  • Dejl, Z. Konstrukce strojů a zařízení I,- spojovací části strojů. Ostrava, 2000.
  • Hosnedl, S., Krátký, J. Příručka strojního inřenýra II - převodové mechanismy. Computer Press Praha 2000.
  • Moravec, V. Konstrukce strojů a zařízení II - ozubené převody. Ostrava, Montanex, 2001.
  • Pešík, L. Části strojů - 1. díl. TU v Liberci, 2008. ISBN 978-80-7372-319-4.
  • Pešík, L. Části strojů - 2. díl. TU v Liberci, 2008. ISBN 978-80-7372-320-0.


Study plans that include the course
Faculty Study plan (Version) Category of Branch/Specialization Recommended year of study Recommended semester