Machine design 2
2+0+1, mt, 3 cr
details
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NEPTUN-code: BGBGG22NEC
Language of the course: English
Subject leader: Endre Korondi senior lecturer
Co-lecturer: dr. Erzsébet Ancza associate professor
Institute of Machine Design and Safety Engineering,
Donát Bánki Faculty of Mechanical and Safety
Engineering, Óbuda University
• Contact information:
– E-mail: korondi.endre@bgk.uni-obuda.hu
ancza.erzsebet@bgk.uni-obuda.hu
– Room 142 and 10
Machine Design I. (Technical Drawing)
Machine Design II.
?
• Gépelemek
• Gépszerkezetek
• Machine parts
• ~ components
• ~ elements
• ~ design
• ~ details
• ~ structures
• Engineering Design
aim
• to introduce the structure of machines, the
function, type and load of machine
elements and the main methods of
designing them
• Main chapters of this semester:
– Fits & tolerances
– Basics of stressing
– Joints
– Drive systems 1.
Connecting subjects
machine design I and III 
mechanics I, II, III
engineering materials
….
pneumatics and hydraulics
Requirements
3 hours weekly (mostly 2 lecture, 1 laboratory)
Attendance and participation are important!
Engineering is not a spectator sport.
(allowed absence four occasions)
Course requirements:
Tests (tolerances, stressing) 10+10 points
Assignments (valve, key joint, coupling) (10+15+15)
Written exam 60 point
Preliminary deadlines
Valve (assembly+part dwg) 22/03 (6th week)
Key joint (ass. dwg+calc.) 05/04 (8th week)
Coupling (ass. dwg+calc.) 03/05 (12th week)
Test on fits& tolerances: 01/03 (3rd week)
Test on stressing:
09/04 (10th week)
Exam (closing test)
10/05 (13rd week)
evaluation
minimum: tests, assignments, exam 50% each
beeing late with ass. mean extra fee! (1kHUF)
overall minimum for mid-term mark: 50%
(60 of 120 points)
retry:
for tests: one occasion
for assignments: next to last week
exam: last week
Ultimate deadline : last week (17th of May)
Further exam retry (once) by Study Regulations
literature
Textbook with
assignments
BMF BGK 3022
+ Mark’s Standard-Handbook/Machine Element.pdf
some hungarian textbooks
Diószegi György, dr. Gyurcsovics Lajosné, et. al.:
Géprajz, gépelemek II., BMF-BL-346
Géprajz, gépelemek II. Segédlet, BMF-BL-346
German:)
Other TUs
old & new
machine elements
general purpose machine elements
static elements
• joints
• frames
• springs
(mechanical) drive systems
• bearings
• shafts
• couplings & clutches
• drives
vessel systems
• pipes
• valves
• tanks
machine group – machine part assembly – machine element
pump
motor
hierarchy
seal
shaft
coupling
bearing
pipe joint
joint
frame
Technical terms
„The beginning of wisdom starts with calling
things on their right names”
Chinese proverb
words
grammar
Ok, it’s not so difficult, but…
Tolómérő / Subler
Vernier caliper
Íves retesz
Woodruff key
Ékszíj
Vee-belt
UK
US
gauge
gage
(idomszer)
rugós biztosítógyűrű
tengelyhez/ furathoz
Seeger-gyűrű
retaining ring, snap ring
C-clip, circlip
Jesus clip (!)
Kulisszás hajtómű
Scotch joke (1)
Scotch joke (2:)
Hungarian lecture:
Mr. Szunyogh, Tuesday 14.25, P10
That’all, folks!