2. Professors
  3. CARLONE Pierpaolo
  4. Teaching

COMPUTER AIDED MANUFACTURING

Pierpaolo CARLONE COMPUTER AIDED MANUFACTURING

0622300047
DIPARTIMENTO DI INGEGNERIA INDUSTRIALE
EQF7
MECHANICAL ENGINEERING
2022/2023



OBBLIGATORIO
YEAR OF COURSE 1
YEAR OF DIDACTIC SYSTEM 2018
AUTUMN SEMESTER
CFUHOURSACTIVITY
660LESSONS
PIERPAOLO CARLONE T Curriculum
Objectives
THE COURSE PROVIDES THE BASIC CONCEPTS RELATED TO THE COMPUTATIONAL PROGRAMING AND OPTIMIZATION OF THE PRODUCTION AND THE TECHNIQUES FOR CNC MACHINE PROGRAMMING (MANUAL, INTERACTIVE AND AUTOMATIC) TO PERFORM MECHANICAL PROCESSING OR DIMENSIONAL VERIFICATION OF WORKED PARTS.


KNOWLEDGE AND UNDERSTANDING.
AT THE END OF THE COURSE, THE STUDENT KNOWS:
- STRUCTURE AND COMPONENTS OF NUMERICAL CONTROL TOOLS AND MEASUREMENT MACHINES;
- METHODS OF CONTROL AND CORRECTION, CALCULATION OF TRAJECTORIES AND SPEED BREAKDOWN;
- METHODS FOR MANUAL AND AUTOMATIC PROGRAMMING OF NUMERICALLY CONTROLLED MACHINES;
-MOST RELEVANT THEORETICAL MODELS OF THE MANUFACTURING SYSTEMS AND THE TECHNIQUES FOR THE STATISTICAL ANALYSIS AND THE CONTROL OF THE PRODUCTION (MANAGEMENT ENGINEERING STUDENTS).

APPLIED KNOWLEDGE AND UNDERSTANDING
AT THE END OF THE COURSE, THE STUDENT IS ABLE TO:
- IDENTIFY THE MOST APPROPRIATE WORKING STRATEGIES TO REALIZE MECHANICAL DETAILS
- PROGRAM THE MACHINE TOOLS IN MANUAL OR AUTOMATIC MODE
- IDENTIFY THE MOST APPROPRIATE STRATEGIES OF DIMENSIONAL AND SHAPE CONTROL TO REALIZE MECHANICAL DETAILS
- PROGRAM COORDINATE MEASURING MACHINES IN MANUAL OR AUTOMATIC MODE.
-IDETIFY THE APPROACHES FOR THE PRODUCTION PLANNING AND FOR THE DESIGN OF THE EXPERIMENTS TO ANALYZE THE PROCESSES (MANAGEMENT ENGINEERING STUDENTS).

AUTONOMY OF JUDGMENT
BEING ABLE TO IDENTIFY THE MOST APPROPRIATE MANUFACTURING OR MEASURING STRATEGIES TO REALIZE OR VERIFY SURFACES MEETING THE SPECIFIC DESIGN REQUIREMENTS.

COMMUNICATION SKILLS
BEING ABLE TO DESCRIBE, IN WRITTEN FORM, IN A CLEAR AND CONCISE WAY AND ORALLY PRESENT THE OBJECTIVES USING TECHNICAL-SCIENTIFIC LANGUAGE, THE PROCEDURE AND THE RESULTS OF THE PERFORMED ELABORATIONS.

LEARNING SKILLS
BEING ABLE TO APPLY THE KNOWLEDGE ACQUIRED IN CONTEXTS DIFFERENT FROM THOSE PRESENTED DURING THE COURSE, AND TO DEEPEN THE TOPICS COVERED USING MATERIALS OTHER THAN THOSE PROPOSED.
Prerequisites
KNOWLEDGE OF THE FUNDAMENTS OF THE MATERIALS SCIENCE AND THE CONVENTIONAL PROCESSING TECHNOLOGIES FOR CHIP REMOVAL, PLASTIC DEFORMATION AND THE BASIC OF QUALITY MANAGEMENT IS REQUIRED (MANAGEMENT ENGINEERING STUDENTS).
Contents
OPTIMIZATION OF THE OPERATIVE PARAMETERS (THEORY HOURS 15, EXERCITATIVE HOURS 5)
TECHNIQUES FOR THE OPTIMIZATION OF THE CUTTING SPEED AND COMBINED OPTIMIZATION, BELLMAN PRINCIPLE OF OPTIMALITY.

GENERAL INFORMATION ON MACHINE TOOLS WITH NUMERICAL CONTROL AND COORDINATE MEASURING MACHINES (THEORY HOURS 10, LABORATORY HOURS 5)
EVOLUTION OF NUMERICAL CONTROL. MACHINE TOOLS: STRUCTURE AND COMPONENTS. CONTROL AND CORRECTION STRATEGIES. COORDINATE MEASURING MACHINES: STRUCTURE AND PROGRAMING.

BASIC PROGRAMMING METHODS OF NUMERICALLY CONTROLLED MACHINE TOOLS (THEORY HOURS 15, EXERCITATIVE HOURS 6, LABORATORY HOURS 4)
MANUAL PROGRAMMING, INTERACTIVE OR CONVERSATIONAL PROGRAMMING, STANDARD ISO-6983 (ADDRESS FUNCTIONS, GENERAL, MISCELLANEOUS). DRAWING OF A PART PROGRAM FOR MECHANICAL PROCESSING WITH SWARF REMOVAL. AUTOMATIC PROGRAMMING. ATP AND CAD-CAM.

THE FOLLOWING CONTENTS WIL BE PROVIDED TO MANAGEMENT ENGINEERING STUDENTS:

FREQUENCY DISTRIBUTIONS (3 HOURS THEORY, 2 HOURS EXERCISE).
CLASSIC PROBABILITY, CONDITIONAL PROBABILITY AND BAYES THEOREM, COMBINATORY ANALYSIS, DISCRETE AND CONTINUOUS VARIABLES. HISTOGRAMS AND FREQUENCY POLYGONS. POSITION AND VARIABILITY INDICES. MOMENTS OF THE RANDOM VARIABLE. JOINT DISTRIBUTIONS.

ELEMENTARY THEORY OF SAMPLES (5 HOURS THEORY, 2 HOURS EXERCISE).
GENERATION OF PSEUDO-RANDOM NUMBERS AND RANDOM VARIABLES, SAMPLING WITH AND WITHOUT REPETITION, DISTRIBUTION OF THE SAMPLING AVERAGE, DISTRIBUTION OF THE SUMS AND OF THE SAMPLE DIFFERENCES, STUDENT DISTRIBUTION, FISHER DISTRIBUTION. DECISION THEORY: CORRECT AND EFFICIENT PARAMETERS ESTIMATION, POINT AND INTERVAL ESTIMATIONS, CONFIDENCE INTERVALS, HYPOTHESIS TESTS, SIGNIFICANCE, COMPARISON BETWEEN AVERAGES, COMPARISON BETWEEN VARIATIONS.

DESIGN OF THE EXPERIMENTS (7 HOURS THEORY, 3 HOURS EXERCISE).
EXPERIMENTS WITH A FACTOR, FULLY CASUALIZED PLANS, ANALYSIS OF THE ONE-WAY VARIANCE, ANALYSIS OF THE RESIDUES, FACTORIAL EXPERIMENTS, FRACTIONAL FACTORIAL PLANS, ANALYSIS OF THE TWO-WAY VARIANCE, ANALYSIS OF THE INTERACTIONS BETWEEN FACTORS, SURFACE METHODS.

PROCESS CAPACITY ANALYSIS (5 HOURS THEORY, 3 HOURS EXERCISE).
CAPACITY INDICES, CAPACITY ANALYSIS WITH HISTOGRAMS AND PROBABILITY CHARTS, CAPACITY ANALYSIS WITH PLANNED EXPERIMENTS, ESTIMATION OF THE NATURAL TOLERANCE LIMITS OF A PROCESS. CONTROL CHARTS. CHARTS FOR VARIABLES AND CHARTS FOR ATTRIBUTES, CONTROL LIMITS.
Teaching Methods
THE COURSE IS STRUCTURED IN THEORETICAL LESSONS AND CLASSROOM EXERCISES INTEGRATED WITH LABORATORY VISITS AND PRACTICAL DEMONSTRATIONS OF MECHANICAL PROCESSING AND MEASURING CYCLES.
THE THEORETICAL LESSONS SHOW THE STRUCTURE AND COMPONENTS OF NUMERICALLY CONTROLLED TOOL MACHINES AND COORDINATED MEASURING MACHINES, MANUAL AND CAD/CAM PROGRAMMING METHODS.
THE EXERCISES ARE AIMED AT THE MANUAL AND AUTOMATIC DRAWING OF PART PROGRAMS, IN RELATION TO THE GEOMETRY OF DEFINED MECHANICAL DETAILS. THE EXECUTION OF THE EXERCISES IS PERFORMED BY THE TEACHER INVOLVING EVENTUALLY ANY OR MORE STUDENTS IN THE RESOLUTION.
THE DEMONSTRATIONS IN THE LABORATORY ARE AIMED AT PROVIDING A PRACTICAL REVIEW OF THE THEORETICAL NOTIONS EXPLORED IN THE THEORETICAL LESSONS.
Verification of learning
THE EVALUATION OF THE ACHIEVEMENT OF THE OBJECTIVES WILL TAKE PLACE BY A WRITTEN TEST AND AN ORAL INTERVIEW WHERE THE DEGREE OF KNOWLEDGE ACQUIRED AND THE ABILITY OF EXPOSURE OF THE DISCUSSED TOPICS WILL BE ASSESSED. THE TOTAL ASSESSMENT IS EXPRESSED IN THIRTYTHS.

IN ORDER TO ACCESS THE ORAL EXAM, THE WRITTEN TEST MUST BE PASSED AT LEAST WITH A MINIMUM SCORE OF 18/30. THE WRITTEN TEST CONSISTS OF THE DRAWING UP OF A PART PROGRAM, RELATING TO TURNING, MILLING AND DRILLING OPERATIONS, TO BE CARRIED OUT WITHIN A TIME LIMIT OF TWO HOURS. DURING THE ORAL TEST IS ALSO REQUIRED THE PRESENTATION OF AN ELABORATE DEVELOPED DURING THE COURSE DEEPENING THE SPECIFIC THEMES.
THE EVALUATION OF THE TESTS TAKES INTO ACCOUNT THE ABILITY TO IDENTIFY THE MOST APPROPRIATE WORKING STRATEGIES FOR MACHINING MECHANICAL COMPONENTS, THE ABILITY TO CLEARLY AND CONCISELY EXPOSE THE OBJECTIVES, THE PROCEDURE AND THE RESULTS OF THE ELABORATIONS PERFORMED, AS WELL AS THE ABILITY TO DEEPEN THE TOPICS COVERED USING MATERIALS OTHER THAN THOSE PROPOSED.
THE MINIMUM ASSESSMENT LEVEL (18/30) IS ATTRIBUTED WHEREAS THE STUDENT DEMONSTRATES A SCARCE UNDERSTANDING OF THE NUMERICALLY CONTROLLED MACHINES AND OF THE RELATED PROGRAMMING, HAS A POOR DISPLAY CAPACITY AND LIMITED AUTONOMY AND JUDGMENT.
THE MAXIMUM LEVEL (30/30) IS ATTRIBUTED WHEREAS THE STUDENT DEMONSTRATES A COMPLETE AND IN-DEPTH KNOWLEDGE OF THE ANALYZED INSTRUMENTS AND METHODS AND IS ABLE TO SOLVE THE PROPOSED PROBLEMS BY IDENTIFYING THE MOST APPROPRIATE WORKING AND PROGRAMMING STRATEGIES AND SHOWS A REMARKABLE CAPACITY IN WRITING OF PART PROGRAM
THE FINAL MARK, EXPRESSED IN THIRTIETHS WITH POSSIBLE HONOR, IS OBTAINED AS THE AVERAGE OF THE TWO TESTS.
THE HONOR IS AWARDED WHEREAS THE CANDIDATE DEMONSTRATES SIGNIFICANT MASTERY OF THE THEORETICAL AND OPERATIONAL CONTENTS AND SHOWS HIS ABILITY TO PRESENT THE TOPICS WITH SIGNIFICANT LANGUAGE PROPERTIES AND AUTONOMOUS PROCESSING CAPACITY EVEN IN CONTEXTS OTHER THAN THOSE PROPOSED BY THE TEACHER.
Texts
- NOTES AND SLIDES OF LECTURES AND EXERCITATIONS
- M. GIUSTI, F. SANTOCHI - TECNOLOGIA MECCANICA E STUDI DI FABBRICAZIONE ED. AMBROSIANA
- P. SMID, CNC PROGRAMMING HANDBOOK, INDUSTRIAL PRESS INC.
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