346-2004/01 – Metrology (Met)
| Gurantor department | Department of Machining, Assembly and Engineering Metrology | Credits | 4 |
| Subject guarantor | Ing. Lenka Čepová, Ph.D. | Subject version guarantor | Ing. Lenka Čepová, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 3 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Develop knowledge of the fundamentals of metrology, to meet the basic legal document in the field of Metrology - Metrology Act, as amended by Act No. 119/2000. Develop and apply knowledge from the baseline parameters of machine parts on specific tasks. Statistically evaluate the measured data - express the uncertainty of measurement, the measurement result. Read workshop drawings of machine parts from control perspective.
Teaching methods
Lectures
Tutorials
Summary
The subject belongs to a group of professional courses, which links to articles mathematics and statistic. Students will learn the basic terminology in metrology, fundamental principles of measurement, basics of data processing. Develops in-depth methodology for measuring length, plane angle, surface roughness evaluation, control selected parameters of machine parts. Theoretical findings are verified in practical exercises in the laboratory.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Full-time study form:
Conditions for obtaining the credit:
Elaboration and defense of the protocol on the role of measurements within 2 weeks after measuring.Based on the protocol submitted to individual programs and their students are assigned to defend the score. Late submission - lower score.
Points for credit:
EXCERCISE:
7 programs (praktical part): 2-4 points/each task
2 tests: 3-6 points/1 test
minimum for credit: 20 points
maximum for credit: 40 points
EXAM:
written part 10-20 points/test
oral part (2 questions) 0-20 points/1 question
subtotal exam max. 60 points
total max. points from excercise and exam 100 points
Part-time study form:
Conditions for obtaining the credit:
Elaboration and defense of two protocol.Based on the protocol submitted to individual programs and their students are assigned to defend the score. Late submission - lower score.
Points for credit:
EXCERCISE:
2 programs (praktical part): 10-20 points/each task
minimum for credit: 20 points
maximum credit for excercise: 40 points
EXAM:
written part 10-20 points/test
oral part (2 questions) 0-20 points/1 question
maximum credit for exam 60 points
total max. points from excercise and exam 100 points
Test Questions:
1. Meaning of metrology in quality management system, division of metrology. National metrology system.
2. Basic terms. Units.
3. Metrology Act - Purpose, Distribution of Gauges.
4. State metrological control (type approval, verification, certification of reference material). Calibration of gauges.
5. Traceability of gauges, continuity schemes - nature, utilization.
6. Institutions active in metrology in the Czech Republic, their basic tasks, scope.
7. Measurement errors and their expression.
8. Measurement uncertainties and their expression.
9. Measuring instruments with mechanical, optical and mechanical transmissions (principle, use).
10. Meters with electrical, pneumatic (principle, use).
11. Length metrology, length standards, end gauge.
12. Light interference and its use in metrology.
13. Gauges, limit gauges (use, control).
14. Plane angle metrology (units, standards, gauges, use)
15. Checking conical surfaces (methods, gauges).
16. Utilization of goniometric functions in plane angle control (principle, examples of use)
17. Check vertical and horizontal position (principle, methods, gauges).
18. Inspection and measurement of selected thread parameters (methods, gauges).
19. Inspection and measurement of selected parameters of gears (methods, gauges).
20. Surface roughness control (parameters, methods, gauges).
21. Control of selected parameters of shape and position deviations (deviation specification, tolerance, basic methods, gauges).
22. Basics of machine tool parameters on a 3D measuring machine (distribution, principle, touch calibration, principles, application possibilities).
23. Requirements for a metrology laboratory.
You must have written credit if you wan´t pass exam.
E-learning
Other requirements
Students are required to equip laboratories: cotton gloves, calculator, plastic slippers or shoe covers.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Syllabus of lectures:
1st Introduction to Metrology - Metrology characteristics , defining important terms in the field .
2nd Metrology Law – introduction to applicable law on metrology, institutions active in metrology, the basic division of measurement instrument.
3rd National Metrology system - the basic elements of the national metrology system.
4th Metrology traceability - incorporation of instruments in an uninterrupted sequence of transfer values.
5th Errors and uncertainty of measurement - the issue of kinds and computation errors and uncertainties.
6th Basic types of measuring instruments - classification of measuring instruments from different perspectives.
7th Length metrology - various methods of measurements of lengths by absolute and comparative gauges.
8th Metrology plane angle - the angle measuring with different kinds of measuring instruments.
9th Check the roughness of surfaces - different types of surface roughness and description of methods of roughness measured.
10th Deviations of form and position - read of technical drawings in terms of metrology.
11th Check the threads - Thread parameters and the measured methods.
12th Check of gears - gears various parameters and methods of controlling these parameters.
13th Coordinate measuring machines - measurement on CMM including practical examples of measurements in the laboratory.Requirements for metrological laboratories.
List of measurement tasks:
1st task - control aggression sweat.
2nd role - control of dimensional accuracy of holes.
3rd task - check roller (flat gauge).
4th task - check angles.
5th task - check the thread.
6th task - control cones.
7th task - control roughness of surface.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction