GD&T TRAINING
- Dimensions and Drawings
- Datum & Datum System
- GD&T Rules
- Flatness: Interpret the flatness control.
- Straightness:Interpret the straightness control.
- Circularity: Interpret the circularity control.
- Cylindricity: Interpret the cylindricity control.
- GD&T Concepts & Modifiers.
- (LMC), Regardless of Feature Size, worst-case boundary, virtual condition, and bonus tolerance.
- Size Datum: Interpret feature of size datum specifications at RFS & MMC.
- Position – RFS/MMC/LMC: Interpret RFS, MMC and LMC tolerance of position applications.
- Orientation Controls: Understand the basics of orientation controls.
- Perpendicularity: Interpret the perpendicularity control.
- Angularity: Interpret the angularity control.
- Parallelism: Interpret the parallelism control.
- Special Applications – Composite Tolerances
- Concentricity: Interpret the concentricity control
- Symmetry: Interpret the symmetry control.
- Circular Runout: Interpret the circular runout control.
- Total Runout: Interpret the total runout control.
- Introduction to Profile: Understand profile tolerancing.
- Profile of a Surface: Interpret the profile of a surface control.
- Profile of a Line: Interpret the profile of a line control.
3D Coordinate Measuring Machine
Units
SI Units, inch, Angles-Degrees & Decimal Degrees.
2-D Coordinate Systems
(Mathematical) Drawing Plane, Origin, Cartesian Coordinates, Polar Coordinates.
3-D Coordinate Systems
Cartesian Coordinate System in Space, Right-Hand Rule, Translation and Rotation, Cylindrical and Spherical Coordinate System
Structure of Coordinate Measuring Machines
Axis Guide, Stylus System, Stylus, Measuring Computer and Measuring Software, Work Holding Fixture, Additional Equipment (Rotary Table, Stylus System Changer, Articulating Stylus System)
Types of Coordinate Measuring Machines
Cantilever/Bridge/Column/Gantry Types, Differences in the Types
Geometric elements
Standard form elements: Point/ Line/ Plane/ Circle/ Sphere/ Cylinder/ Cone/ Torus, Vector, Normal Vector, Minimum Number of Points, Projection
Geometric constructions
Distance / Angle / Intersection / Symmetry of Geometric Elements.
Evaluation
Evaluation Criteria: Function-Oriented Evaluation Methods, Differences in the Evaluation Methods (Gauss, Envelope, Minimum & maximum Requirement).
Geometric Dimension & Tolerance
Standards, Symbols and Drawing Entries, Length Dimensions, Angular Dimensions, Limiting Dimensions, MMC/LMC, Form Tolerances, Location Tolerances, Orientation Tolerances, Composite Tolerances, Profile Tolerances.
Preparing a Measurement on the Coordinate Measuring Machine
Standardized Temperature, Part Cleaning, Temperature Control, Fixturing, (Avoiding Distortion), Featuring Systems.
Measuring Strategy
Define Clamping Setups and References (Practical Instructions), Order of Reference and Origin Selection, Measuring Element.
Machine Start up
Cleaning, Power ON, Software start up, Homing, warming up.
Stylus Selection and Qualification
Stylus System Selection, Stylus Qualification, Reference Sphere, Reference Stylus, Stylus Sphere Radius Correction, Stylus Tip Bending Correction, Errors of Incorrect Qualification.
Measuring on the Coordinate Measuring Machine
Determining part Coordinate System.
Probing Strategy
Number and Distribution of Probing Points, Probing Force and Speed, incl. Material Properties, Stylus Diameter, Special Styli, Scanning
CNC Programming
Teach-In Programs, Execution of programs, Consequences of Collisions, Editing of the programs.
Documentation
Measurement Reports, Graphic Evaluation, Form Plots, Measurement Reports and Their Improvement
Practical on CMM
Basic Knowledge – CAD
Principles and Tools of CAD Design, Model Types, CAD Data Dimensions, CAD Formats, Import of CAD Data, Interfaces
CNC Programming
Offline Programming, Measuring against CAD Data, Geometric Alignment, Best-Fit alignment, RPS alignment, Three point alignment, Surface Point, Border Points.
Basic Knowledge – Reverse Engineering
Area Digitizing; Curves, Output Formats
Creation of Measurement Programs
Precision-Optimized Measuring Sequence, Time-Optimized Measuring Sequence, Travel Path Optimization, Feature-Oriented Measuring, Remote Programming, Safety Points and Planes, Program Loops / Branches/ Modules, Macros, User Interfaces, Program Optimization Loops, If/Then Conditions, DMIS Standard
Good Measurement Practice
Measuring Creates Added Value, Good Measurement Practice, Necessity of Cooperation
Effects on the Measurement Result
Effects on the Measurement Result, Reduction of Measurement Uncertainty, Detection and Reduction of Systematic and Random Effects, Temperature Compensation
Precision
Accuracy of Coordinate Measuring Machines, CAA Correction, Manufacturing Methods and Accuracies.
Basic Knowledge – Test Equipment Monitoring
Test Equipment Monitoring, incl. Monitoring Strategies, Test Specimen, Monitoring and Acceptance Test of Coordinate Measuring Machines