DIDACTIC UNIT 2.
METROTECHNICS.
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Lesson 2. PRINCIPLES OF DIMENSIONAL METROLOGY.
Introduction. Definitions and concepts. The international system of units. Physical quantities covered by Dimensional Metrology. Elements involved in the measurement. Classifications of measurement methods. Patterns. The traceability chain. Calibration. Uncertainty. Calibration chain and transmission of uncertainty. Relationship between tolerance and uncertainty. Expression of measurement uncertainty in calibration.
Lesson 3. MEASUREMENT INSTRUMENTS AND METHODS.
Introduction. Patterns. Verification instruments. Interferometric patterns. Principles of interferometry. Direct measurement instruments. Methods and instruments of indirect measurement.
Lesson 4. MEASUREMENT BY COORDINATES. IMAGE MEASUREMENT. SURFACE QUALITY.
Coordinate measuring machines. Concept. Principles of MMC. Classification of machines. Main components of MMC. Process to follow for the development of a measure. Image measurement systems. Surface Quality. Roughness measurement methods. Roughness parameters. |
DIDACTIC UNIT 3.
FORMING PROCESSES BY MATERIAL REMOVAL |
Lesson 5. INTRODUCTION TO SHAPING BY MATERIAL REMOVAL.
Introduction. Movements in the material removal process. Factors to take into account when choosing the tool. Tool geometry. Tool materials. Chip formation mechanism. Types of chips. Power and cutting forces. Tool wear. Tool wear criteria. Determination of tool life. Cutting fluids.
Lesson 6. TURNING: OPERATIONS, MACHINES AND TOOLS.
Introduction. Main operations around. The machine tool: the lathe. Main parts of the lathe. Assembly or holding of parts. Typical lathe tools. Special lathes.
Lesson 7. MILLING: OPERATIONS, MACHINES AND TOOLS.
Introduction. Description and classification of milling operations. Parts and main types of milling machines. Types of strawberries. Tool assembly. Piece clamping. Different configurations of milling machines. Special milling machines.
Lesson 8. MACHINING OF HOLES AND WITH MAIN RECTILINEAR MOVEMENT: OPERATIONS, MACHINES AND TOOLS.
Introduction to hole machining operations. Drilling machines. Boring machines. General characteristics of machining processes with main rectilinear movement. Filer. Mortiser. Planer. Broaching machine. Saws.
Lesson 9. SHAPING WITH ABRASIVES: OPERATIONS, MACHINES AND TOOLS.
Introduction to hole machining operations. Abrasive wheels. Grinding operation. Types of grinding machines. Honed. Lapped. Polished. Burnish. Super finish
Lesson 10. NON-CONVENTIONAL MACHINING PROCESSES.
Introduction. Machining by electro-erosion or electro-discharge. Electrochemical machining. Laser machining. Water jet machining. Plasma arc cutting. Ultrasonic machining. Chemical milling. |
DIDACTIC UNIT 4.
AUTOMATION AND MANAGEMENT OF MANUFACTURING PROCESSES. |
Lesson 11. NUMERICAL CONTROL OF MACHINE TOOLS.
Introduction. Advantages of the application of NC in machine tools. Information needed to create a NC program. Manual programming of MHCN. Types of CN language. Structure of a program in ISO code. Characters used. Preparatory functions (G__). Auxiliary functions (M__). Interpretation of the main functions. Examples. Automatic programming in numerical control. |
DIDACTIC UNIT 6.
UNION SHAPING PROCESSES. |
Lesson 16. WELDING PROCESSES.
Introduction to welding processes. Electric arc welding. Resistance welding. Welding with oxygen and fuel gas. Welding with the melting temperature of the filler metal lower than that of the metals to be joined.
Lesson 17. JOINNING AND ASSEMBLY PROCESSES WITHOUT WELDING.
Bonding processes using adhesives. Adhesion resistance. Conditions for gluing. Joint design Types of adhesives according to origin and composition. Mechanical joining processes. Removable and permanent mechanical joints. |
PRACTICE PROGRAM |
Practice 1.- Use of conventional metrology devices.
Measurement of pieces using a normal caliper, depth gauge, exterior and interior micrometer. Use of dial gauge. Checking flat surfaces. Use of go/no go gauges, rules, squares and pattern cleats. Measuring and checking threads. Making metric measurements and in English units.
Practice 2.-Indirect measurements.
Checking a cone using rollers and a caliper, measuring a dovetail using rollers, measuring the angles of a double dovetail and measuring using a sine ruler. Direct measurements with goniometer. Checking threads.
Practice 3.- Coordinate measurement machine.
Coordinate system selection. Checking part measurements, using a coordinate measuring machine. Verification of tolerances, shape and position.
Practice 4.- Manufacturing with conventional machine tools.
Manufacture of a part using the conventional lathe, milling machine and drill, defining the basic operations and carrying them out on the machine. Manufacturing process planning. Preparation of process sheets.
Practice 5, 6 and 7.- Introduction to numerical control applied to the lathe and milling machine.
Realization of a CNC program using a simulator, with the main and simplest commands. Programming and machining of parts on both the lathe and the milling machine in the workshop classroom.
Practice 8.- Welding.
Knowledge of different electric welding equipment. Welding of different materials using coated electrode, TIG and MIG techniques.
Practice 9.- Scoring practical test on numerical control. |