Reading Assignment
- FTD Chapter 9
Recommended Reading
See Also:
TECH 1711 – Measurement, Inspection & Layout
http://www.hexagonmetrology.us/products
Outline
Introduction
Purpose
Advantages of Inspection Tooling
- Fast
- Can be used by workers with limited skill/training
- Can be designed to simulate actual installation conditions
Disadvantages of Inspection Tooling
- Some tolerance conditions can not be checked with hard tooling
- Expensive
- Not flexible, adaptable
Design Parameters
- Must be made with to a level of accuracy exceeding that of the components they evaluate
- Gagemaker’s Tolerance
- Class XX
- Class X
- Class Y
- Class Z
Gage Types
Profile Gage
- Radius Gage
- Screw Pitch Gage
Size Limit Gage
- Go-No Go Plug gage
- Go-No Go Ring gage
- Snap Gage
- Thread Roll Snap Gage
- Feeler Gage
- Flush Pin Gage
Limitations of Size-Limit Gages
- Type I Error
- Type II Error
Graduated Gauging
- Dial Indicators
- Limit flags
- Integrating Dial Indicators into Gaging
- Standard Indicator Stands
- Inspecting for Flatness (FIM/TIR)
- Inspection Profile of a Line with Dial Indicators
- Electronic Gages
- Encoders
- Air Gages (pneumatic comparators)
- Optical Gaging
- Optical Comparator
- Overlays
- CMM (Coordinate Measuring Machines)
Functional Gauging
- MMC
- Examples
- Checking Perpendicularity
- Checking Parallelism
- Runnout (using OD Datum)
- Bolt Hole Alignment
