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CZECH TECHNICAL UNIVERSITY IN PRAGUE
STUDY PLANS
2019/2020

Machine Elements and Mechanisms I.

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Code Completion Credits Range Language
2131512 Z,ZK 6 3P+2C Czech
Lecturer:
František Lopot (guarantor), Jiří Houkal, Jan Kanaval, Jaroslav Křička
Tutor:
František Lopot (guarantor), Zdeněk Češpíro, Martin Dub, Jiří Houkal, Jan Kanaval, Jaroslav Křička, Pavel Mossóczy, Karel Petr, Roman Uhlíř
Supervisor:
Department of Designing and Machine Components
Synopsis:

Joints and joining elements (screwed, clamped, splined, welded, riveted, soldered and adhesive joints; joints with use of feathers, pins, tenons, cotters, keys). Mechanical transmissions (belt, chain, friction, gear drives).

Seminars are devoted to practical individual solution of simple design projects - tasks with motion screws, preloaded connecting bolts, clamped, pressed, splined and key joints between shafts and hubs and tasks with welded and riveted joints. Sketching of machine elements and their simple assembly units is also indispensable seminar work.

Requirements:

Assessment:

- elaboration and successful defence (respecting due dates) of all assigned design tasks,

- elaboration of given number of sketched machine elements and their assembly units

Examination:

- knowledge of whole range of lectured subject matters,

- sketching ability (model-less sketching of machine elements and their simple assembly units),

- numwerical design calculation of assigned simple design tasks with use of technical literature

Syllabus of lectures:

1. Basic principles of supporting systems design.

2. Bolt and screw joints. Geometry, mechanics and design of thread pairs.

3. Bolt and screw connections - theory and design of preloaded joints.

4. Design of preloaded bolts and screws at variable external load. Motion screws and nuts.

5. Removable joints of shafts and hubs - clamped, pressed, splined, keyed.

6. Joints with clevis pins, pins, shrunk-on rings. Design of welded joints.

7. Butt and fillet welds - practical design calculations. Bonded and riveted joints.

8. Mechanical transmissions - kinematic and dynamic behaviour, calculating models.

9. Design of belt and chain drives, transmissions with friction wheels.

10. Geared transmissions - types, basic law of gearing, theory of involute gearing.

11. Spur gear drives - dimensional and strength calculations, design, measuring, production.

12. Helical gear drives - virtual gear theory, rules of calculating methods, dimensional and strength calculations, design, measuring, production.

13. Bevel gear drives - virtual and bivirtual gears theory, rules of calculating methods.

14. Hypoid gear drives. Screw and worm gear drives - dimensional and strength calculations, design and production of gears.

Syllabus of tutorials:

Design Tasks:

1. Driving Mechanism with Motion Screw

2. Assembly Unit with Dynamically loaded prestressed connecting bolt

3. Connection of Shaft and Hub of Wheel with feather key

4. Straight Sided Spline Connection of Shaft and Hub of Wheel

5. Connection of two Shafts with Clamping Shaft Coupling

6. Pressed Joining of Shaft and Hub of Wheel

7. Welded Pressure Tank.

8. Latice in Plane with Welded (Rivited) Steel Construction

Sketched figures:

41 sketched examples of machine elements and their assembly units

Study Objective:

Extension of knowledge and acquisition of basic skills at design of machine parts and mechanisms.

Clarification of basic calculating theories, models, procedures and design principles of machine elements and assembly units with general use.

Practical design solutions of simple design tasks, including elaboration of preliminary design, check calculations and assembly drawings.

Study materials:

1. Jančík, L.: Machine Elements and Mechanisms I (study texts), CTU, Prague, 2006

Jančík, L.: Machine Elements and Mechanisms - Tasks (study texts), CTU, Prague, 2008

Shigley, J.E., Mischke, C.R.: Mechanical Engineering Design, McGraw-Hill, New York, 1989

Note:
Time-table for winter semester 2019/2020:
06:00–08:0008:00–10:0010:00–12:0012:00–14:0014:00–16:0016:00–18:0018:00–20:0020:00–22:0022:00–24:00
Mon
roomT4:D1-266
Houkal J.
Křička J.

11:30–14:00
(lecture parallel1)
Dejvice
Posluchárna 266
roomT4:A2-442a
Houkal J.
17:45–19:15
(lecture parallel1
parallel nr.400)

Dejvice
Poč. rýsovna 442a
roomT4:A2-442b
Křička J.
17:45–19:15
(lecture parallel1
parallel nr.401)

Dejvice
Poč. rýsovna 442b
Tue
roomT4:C1-312
Kanaval J.
09:00–10:30
(lecture parallel2)
Dejvice
Učebna 312
roomT4:A2-442a
Houkal J.
16:00–17:30
(lecture parallel1
parallel nr.101)

Dejvice
Poč. rýsovna 442a
roomT4:A2-261b
Kanaval J.
09:00–10:30
(lecture parallel2
parallel nr.222)

Dejvice
Rýsovna 261b
roomT4:A2-442b
Kanaval J.
16:00–17:30
(lecture parallel1
parallel nr.102)

Dejvice
Poč. rýsovna 442b
roomT4:A2-362

16:00–17:30
(lecture parallel1
parallel nr.103)

Dejvice
Rýsovna 362
Fri
roomT4:A2-442a
Kanaval J.
10:45–12:15
(lecture parallel1
parallel nr.104)

Dejvice
Poč. rýsovna 442a
roomT4:A2-442a
Houkal J.
14:15–15:45
(lecture parallel1
parallel nr.106)

Dejvice
Poč. rýsovna 442a
roomT4:A2-442b
Dub M.
10:45–12:15
(lecture parallel1
parallel nr.105)

Dejvice
Poč. rýsovna 442b
roomT4:A2-442b
Lopot F.
14:15–15:45
(lecture parallel1
parallel nr.107)

Dejvice
Poč. rýsovna 442b
Thu
Fri
roomT4:A2-442a
Houkal J.
10:45–12:15
(lecture parallel1
parallel nr.108)

Dejvice
Poč. rýsovna 442a
roomT4:A2-442a
Houkal J.
12:30–14:00
(lecture parallel1
parallel nr.110)

Dejvice
Poč. rýsovna 442a
roomT4:A2-442b
Křička J.
10:45–12:15
(lecture parallel1
parallel nr.109)

Dejvice
Poč. rýsovna 442b
roomT4:A2-442b
Křička J.
12:30–14:00
(lecture parallel1
parallel nr.111)

Dejvice
Poč. rýsovna 442b
Time-table for summer semester 2019/2020:
Time-table is not available yet
The course is a part of the following study plans:
Data valid to 2019-09-19
For updated information see http://bilakniha.cvut.cz/en/predmet10753002.html