346-5002/02 – Theory of Machining (TO)
| Gurantor department | Department of Machining, Assembly and Engineering Metrology | Credits | 6 |
| Subject guarantor | prof. Ing. Robert Čep, Ph.D. | Subject version guarantor | prof. Ing. Robert Čep, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | English |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FS | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Students will be familiarized with the theory of machining. This subject includes an analysis study of chip forming, of power ratios, of cutting process stability, of thermal effects, of the wear edge of tools, of durability, tool life of materials, and of the optimisation of cutting process.
Teaching methods
Lectures
Tutorials
Summary
The theory includes an analysis of cutting mechanism study the formation of chips dynamic cutting process and the associated stability assessment of cutting process. This subject includes the bases of integreated machining, too.
Compulsory literature:
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
Pass conditions:
•Submission of semestral project.
•2 tests.
•Absence max. 20%.
Scoring:
Credit:
Semestral project max. 15 points
Test 1 max. 10 points
Test 2 max. 10 points
Subtotal max. 35 points
Exam:
Written part (test) max. 40 points
Oral part (1 question) max. 25 points
Subtotal max. 65 points
Total for credit and exam max. 100 points
E-learning
Other requirements
Active participation on lectures and measurings.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Basic concepts, technological system, workpiece, tool, instrument geometry, process and cutting methods.
2. Mechanism and scheme of chip formation, stress and deformation conditions before cutting wedge, deformation in the cutting zone, types and classification of chips
3. Strength and cutting resistance of cutting, work and machining performance, calculation of cutting forces
4. Wear cutting edge wear, wear mechanisms and types, wear criteria, tool life and durability
5. Taylor\'s relationship, methods of detecting T-vc dependencies
6. Heat and cutting temperature, temperature field, heat dissipation, heat balance and machining demands
7. Stability of the cutting process, self, forced and self-induced oscillation
8. Machinability and cutting, distribution, long-term and short-term tests, obturation norms
9. Integrity of machined surface, dimensional and shape accuracy of the part, macro and microscopic surface assessment
10. Machined surface integrity, surface layer characteristics, surface roughness, residual stress on the machined surface, experimental assessment of machined surface
11. Optimization of cutting conditions 1. (according to machine performance and torque, with regard to the strength of the tool and chip formation, according to the precision and quality of the machined surface, according to machinability, cutting and environment
12. Optimization of cutting conditions 2. (areas of permissible solutions, procedure for determining optimal cutting conditions, calculation of optimum edge durability, view of maximum production and minimum cost, adaptive optimization)
13. Theory of high-speed machining
14. Reliability, diagnostics and monitoring of the cutting process
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction