Theory and methodology of machining

Lecturer:

Jan Mádl

Tutor:

Václav Koutný, Vítězslav Rázek

Supervisor:

Department of Machining, Process Planning and Metrology

Synopsis:

Mechanics of chip formation, primary and secondary deformation in chip formation, built-up edge formation, effect of cutting tool geometry on these factors, forces in cutting, vibrations and temperatures, reasons and forms of tool wear, tool life, machinability, cutting ability and cutting medium.

Requirements:

Knowledge of technology of machining methods.

Syllabus of lectures:

1. Chip formation mechanics, deformation zones, diagrams of favourable chip formation.

2. The effect of workpiece material, cutting tool geometry, cutting conditions and other factors on primary deformation zone and the effect on machining process.

3. Secondary deformation, buit-up edge formation in different wrkpice materials and the effect on machining prcesses.

4. Minimum chip thickness, surface integrity, residual stresses and work hardening in machined surfaces.

5. Minimum chip thickness, surface integrity, residual stresses and work hardening in machined surfaces.

6. Forces, torques and power, calculation, the effect of working parameters.

7. Vibrations in machining, the effect of working conditions.

8. Heat and temperatures, the effect of working conditions.

9. Reasons and forms of tool wear.

10. The effect of working conditions on tool wear.

11. Optimum tool wear in roughing and finishing.

12. Tool life, effect of working conditions.

13. Machinability, cutting ability. Cutting medium, cutting fluids.

Syllabus of tutorials:

1. Chip formation, zones of deformation in chip formation.

2. Chip formation, determination of chip formation ratio, relation between chip formation ratio and cutting speed.

3. Experimental determination of empirical equation among cutting temperature, depth of cut, feed and cutting speed in turning. Natural thermocouple calibration.

4. Experimental determination of empirical equation among cutting temperature, depth of cut, feed and cutting speed in turning.

5. Experimental determination of empirical equation among cutting forces in milling and cutting conditions.

6. Experimental determination of machined materials machinability.

Study Objective:

Deep knowledge of machining technology principles and their application in industry.

Study materials:

- Mádl, J.: Teorie obrábění, ČVUT, Praha, 1996

Note:

Further information:

http://u12134.fsid.cvut.cz/?udaj=predmet&id=C41095

Time-table for winter semester 2011/2012:

	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:C2-136 Mádl J. 10:45–13:15 (lecture parallel1) Dejvice Poslucharna 136roomT4:E3-27 Rázek V. Koutný V. 14:15–15:45 EVEN WEEK (lecture parallel1) Dejvice laboratoř K234 hala přízemí 27roomT4:E3-27 Koutný V. Rázek V. 16:00–17:30 EVEN WEEK (lecture parallel1) Dejvice laboratoř K234 hala přízemí 27roomT4:E3-27 Koutný V. Rázek V. 17:45–19:15 ODD WEEK (lecture parallel1) Dejvice laboratoř K234 hala přízemí 27 roomT4:E3-27 Rázek V. Koutný V. 14:15–15:45 ODD WEEK (lecture parallel1) Dejvice laboratoř K234 hala přízemí 27roomT4:E3-27 Rázek V. Koutný V. 16:00–17:30 ODD WEEK (lecture parallel1) Dejvice laboratoř K234 hala přízemí 27
Tue
Fri
Thu
Fri

Time-table for summer semester 2011/2012:

Time-table is not available yet

The course is a part of the following study plans: