Introduction to Machine Design I

Opublikowano: 30.04.2014 20:53

Subject name Introduction to Machine Design I
Type of subject               Directional
Summary ECTS 4
Form of course 60h lecture
Lecturer                           Prof. Michał Hać, Ph.D., D.Sc.
A brief outline:
Lecture
  • General principles of machinery construction. Methods for calculation of strength of machines. Fatigue strength. Safety factors. Allowable stress.
  • The machinery joints. Threaded joints - types of threads and screws. Efficiency. Self-locking. Calculations of strength bolts and nuts. Buckling. Shape joints - designs and calculations dovetailer, wedge, spline and polygonal. Connections and press- systolic - design and calculation. Welded joints - the technology implementation, design recommendations. Strength calculations joints. Joints welded, soldered and glued, riveted - examples of design solutions, strength calculations.
  • Shafts and axles. Strength calculation of shafts and axles. Static and dynamic rigidity shafts.
  • Rolling and sliding bearings. Principles of bearing. Bearing materials. The calculation and selection of rolling bearings. Friction and lubrication. Hydrodynamic lubrication theory. Lubricants and their properties. Calculation of bearings .
  • Resilient joints. Types and characteristics of the springs. The materials used for making springs. Calculation of the springs. Torsion bars. Springs.
  • Clutches. Classification and load. Rigid and flexible couplings, self-adjusting clutches, universal joints. Friction clutches. Calculation of the main dimensions of the friction clutches . Electromagnetic clutches, hydrodynamic couplings. overload protection clutches, way clutches.
  • Friction brakes. Shoe brakes, disk brakes, jaw and belt brakes. Strength calculation and design recommendations.
  • Kinematics of gear. Basic concepts of geometry and kinematics of meshing. Outline of the involute. The spur and helical gears . Basic concepts of geometry and kinematics of meshing. The review of gears production methods. Fundamentals of the theory of planetary gears. Determination of gear ratios in planetary gears. Worm gears.
  • Kinematics of chain, belt and friction drives. Slip, power, and the efficiency of the friction drives.