Introduction to Coordinate Measuring Machines

Today’s Coordinate Measuring Machines (CMMs) offer unprecedented speed, accuracy, and flexibility for dimensional metrology, data collection, and geometric or statistical analysis. From the smallest job shops to the largest multinational corporations, CMMs have become essential tools for achieving quality. But the capabilities and limitations of CMMs vary tremendously from one machine to another.

Introduction to Coordinate Measuring Machines provides an overview of all aspects of selecting and using CMMs. Representative examples of all types of CMMs, from a wide variety of manufacturers, are discussed. The Seminar includes the latest information on manual and computer controlled machines at every level of sophistication. The content can be customized to include information on the specific machines that are of interest to your company.

Introduction to Coordinate Measuring Machines is oriented toward Managers, Supervisors, Operators, Engineers, and Quality Professionals. It consists of six instructional units and requires approximately eight hours for presentation. Participant materials include copies of selected illustrations and reprints of key Coordinate Measuring Machine articles and technical papers. Various presentation schedules are available to meet your requirements.

Please contact us to learn how to make better use of existing CMMs, how to understand their capabilities and limitations, and how to make better purchasing decisions on upgrades or new machines.

To download the data sheet for this program, please click here. (PDF 45 KB)


Seminar Outline:

Unit 1 - Elements of Modern CMMs
Introduction
Typical Coordinate Measuring Machine
Probes and Probing Systems
Hard Probes
Electronic Probes
Noncontact Probes
Super Structures
Fixed Horizontal Arm
Moving Horizontal Arm
Column
Cantilever
Fixed Bridge
Moving Bridge
L-Shaped Bridge
Gantry
4th Axis
5th Axis
Measuring Systems
Glass Scales
Reflective Scales
Rack and Pinion/Rotary Encoders
Farrand Inductosyn
Magnetic Scales
Laser Interferometers
Readout Systems
Analog Devices
Digital Readouts
Computer Systems
Smart Readouts
Desktop Computers
Minicomputers
Mainframe Computers
Software
Printout Only
1 Dimensional Functions
2 Dimensional Functions
2 1/2 Dimensional Functions
Solid Geometric Functions
Curve Fitting
Plotting
Statistics
CAD/CAM/CIM

Unit 2 - Coordinate Measurement
Coordinate Systems
Absolute Coordinate Space
Working Planes of the Machine
Workpiece Coordinate Systems
Problems With Angle Measurements
2 Dimensional Measurement
2 Dimensional Measurement Assumptions
Hard Probe Methods
Smart Readouts and Hard Probes
Desktop Computers and Hard Probes
Summary of 2 Dimensional Measurement
2 1/2 Dimensional Measurement
Assumptions
Electronic Probes
Smart Readouts
Desktop Computers
Software Considerations
Summary of 2 1/2 Dimensional
Measurement



Unit 3 - Solid Geometric Measurement
Geometric Elements
Point
Line
Circle
Plane
Ellipse
Sphere
Cylinder
Cone
3 Dimensional Coordinate Systems
Normal to a Plane
Axis of a Cylinder
Axis of a Cone
Combinations of 2 Dimensional Elements
Distance Between Points
Distance Between Lines
Point of Symmetry
Intersection of Lines
Intersection of Line and Circle
Intersection of Circle and Circle
Patterns of Features
Combinations of 3 Dimensional Elements
Intersection of 2 Planes
Intersection of 3 Planes
Intersection of Cylinder and Plane
Intersection of Cone and Plane
Intersection of Cylinder and Cylinder
Intersection of Cylinder and Cone
Intersection of Cone and Cone
Plane of Symmetry
Summary of Solid Geometric Measurement

Unit 4 - GDT and the CMM

Interpretation of Drawings
Drawing Specifications and Systems
Translating Drawing Specifications to
Workpiece Coordinates
Problems With Drawings
General Principles of GDT
Limits of Size
RFS, MMC, and LMC
Virtual Condition
Symbology
Notes
Geometric Tolerance Symbols
Feature Control Frames
Datum Referencing
Datum Features
Establishing Datums
Datum Targets
Tolerances of Location
Positional Tolerancing
Feature Pattern Location
Projected Tolerance Zones
Noncircular Features
Coaxiality
Symmetry
Form, Profile, Orientation, and Runout
Tolerances
Form Tolerances
Profile Tolerances
Orientation Tolerances
Runout Tolerances
Free State Variation
Summary

Unit 5 - Human Factors and the CMM
Measurement Strategy
Dependence on Capability of CMM
Importance in Achieving Accuracy
Importance is Saving Measurement Time
Manual Machines
Operator Technique with Hard Probes
Operator Technique with Electronic Probes
Tips for Improved Accuracy in
Measurement
Driven Machines
Joystick Control Technique
Speed at Probe Contact
Forces Exerted onthe Workpiece
Probe Qualification

Unit 6 - Measurement Uncertainty
Individual contributors
Probing Systems
Super Structures
Measurement Systems
Readout Systems
Computer Systems
Software
Environment
Operator
Accuracy Evaluation
B89
CMMA
Simple Artifact Tests
Active Compensation
Mapping
Summary
 
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