TMP220 Machine Parts and Power Systems

In the first part of the course, important topics with regard to safe calculation and dimensioning of machine parts are emphasised. Key elements are as follows: Stresses due to static and dynamic loadings. Deformation of machine parts, design to avoid stress concentrations, metal fits and tolerances, power transmission, shafts and critical speed, coupling design, welding, screws fasteners design, breaks, springs, gears, bearings, belt/chain drives. Later in the course, machine parts and mechanisms are put into a larger perspective with regard to the development of mechanical and hydraulic power systems, such as transmissions and larger hydraulic systems. Key elements are as follows: Hydraulic valves, pumps, motors, pistons, electrical control units, mechanical and hydro-mechanical transmissions. In addition, an introduction to the use of standardised component symbols for planning mechanical and hydraulic systems is given, with practical examples from tractors, cranes, mass transfer machines, transport machinery and industrial installations etc. The course contains compulsory exercises, calculation exercises and planning exercises. The exercises focus on understanding, measuring and describing characteristics of single elements and the construction of complex installations and systems.

Through the course, students will learn how to apply elementary force calculations for machine parts and develop skills in the dimensioning of machine parts, power systems and machines. Also, they are to amass knowledge of the most used machine parts, their function and key mechanical and hydraulic systems. The students are to understand how external forces affect construction parts and what precautionary rules should be taken when dimensioning. Also, they are to understand and use the parameters, formulae, standards and criteria required for manual calculations and dimensioning with the needed security against deformation and fatigue. The students are to understand static and dynamic energy as well as force transfer through incompressible liquids and be able to calculate energy losses, efficiencies and outputs of mechanical, hydraulic and combined systems and transmissions. The students are to become familiar with standard symbols for transmission- and hydraulic elements and be able to use them in the design of simple and more complex mechanical and hydraulic systems. When the course has been completed, the students are to be able to calculate, dimension and specify machine parts, mechanical- and hydraulic systems key elements for modern machines that are used in agriculture, forestry, the building and construction sector as well as in industry and transportation. Energy efficient systems and solutions are emphasised in the course.