Construction elements

Enrolment into the academic year.

Fundamentals of technical drawing: technical drawing, types of drawings, drawing tools, drawing formats, folding, scale, lines, technical writing.
Drawing: 2D and 3D projections, views, hatching, cross-sections, wrinkles, invisible edges, details.

Dimensioning: lengths, diameters, radii, angles, curves, inclination, cone, narrowing, holes, groove, layout of the dimensions, parallel and serial dimensioning.

Labeling of the surface quality: micro-and macro-geometrical tolerance, definitions of the surface profiles, marking of the surface quality.

Tolerances and fits: deviations, tolerances of form, location, running, fits, fits systems, the size of the tolerance fields, the position of the tolerance fields, the choice of fits, the application of the fits in practice, recording of the deviations and tolerances.

Machine elements (drawing, nature, labeling, standards): threads, bolts, nuts, screw connection, washers, pins, dowels, groove shafts, bolts, cotter pins, snap rings, rivets, gears, gear pairs, sliding bearings, roller bearings.

V. Savnik, Tehniško risanje. Tehniška založba Slovenije
I. Prebil, FTehnična dokumentacija. Tehniška založba Slovenije, Ljubljana, 1995.
D. Zupančič, Označevanje materialov, Fakulteta za strojništvo, Ljubljana, 1998.
D. Whitehouse, Surfaces and their measurements. Hermes Penton Science, London, 2002.
G. Nieman, H. Winter, B.R. Hohn, Machinen-elemente. Springer, 2005.

Objectives: Base objectives of the course are to provide the students basics about technical communication, technical documentation and performance of standard machine elements. The type and form of technical documentation, spatial projections and rules of technical documentation are defined. Standard form of presentation, classification and selection for basic construction elements is shown. Focus is also on assembly of construction elements, their tolerances and topographical properties of surfaces such as geometry, roughness, etc.

Competences:
Reading and recognizing different kinds of technical documentation.
Ability to design own drawings and technical documentation from sketch to assembly drawing.
Knowledge, analysis and defining tolerances for fitting contacts of construction elements.
Knowledge about surface properties, surface fabrication errors, measuring methods and evaluation of surface defects.
Knowledge and classification for standard construction elements.

Knowledge and understanding: A student independently presents and draws a technical object with all the necessary information about the dimensions, materials, quality, tolerances and other requirements.

Application: Design and understanding of the technical solutions in a standardized format.

Reflection: The ability to critically assess the suitability and optimality of specific technical solutions.

Transferable skills: The knowledge of technical standards is crucial for the cooperation with the technical staff in the design and construction of physical experiments.

Lectures, tutorials, homework (drawing).

Assessment of theoretical knowledge
Assessment of practical work.
grading: 5 (fail), 6-10 (pass) (according to the Statute of UL)

[1] POGAČNIK, Aljaž, KALIN, Mitjan. How to determine the number of asperity peaks, their radii and their heights for engineering surfaces : a critical appraisal. Wear. [Print ed.], 2013, vol. 300, iss. 1/2, str. 143-154, ilustr., doi: 10.1016/j.wear.2013.01.105. [COBISS-SI-ID 12768795]
[2] KALIN, Mitjan. Designing tribological interface for efficient and green DLC lubrication : the role of coatings and lubricants. Tribol. online (Tokyo, Online), 2012, vol. 7, no. 3, str. 112-118, ilustr., doi: 10.2474/trol.7.112. [COBISS-SI-ID 12491035]
[3] MAJDIČ, Franc, PEZDIRNIK, Jože, KALIN, Mitjan. Razvojno preizkušanje vodnega zvezno delujočega drsniškega potnega ventila. Ventil (Ljubl.), 2009, letn. 15, št. 6, str. 516-524, ilustr. [COBISS-SI-ID 11255067]
[4] POGAČNIK, Aljaž, KALIN, Mitjan. Parameters influencing the running-in and long-term tribological behaviour of polyamide (PA) against polyacetal (POM) and steel. Wear. [Print ed.], 2012, vol. 290-291, str. 140-148, ilustr., doi: 10.1016/j.wear.2012.04.017. [COBISS-SI-ID 12348699]
[5] KALIN, Mitjan, VIŽINTIN, Jože. The tribological performance of DLC-coated gears lubricated with biodegradable oil in various pinion/gear material combinations. Wear. [Print ed.], 2005, letn. 259, št. 7/12, str. 1270-1280. http://dx.doi.org/10.1016/j.wear.2005.02.028. [COBISS-SI-ID 8260891