Description
This 43-page book discusses the principles and procedures for testing springs, and provides guidelines for tolerances. Includes both U.S. and Metric units.
Table of Contents:
Tolerances
* Introduction, warning
* Compression Spring Load Tolerances; Quality Grades
* Compression Spring Free Length Tolerances
* Extension Spring Load Tolerances; Quality Grades
* Extension Spring Free Length Tolerances
* Torsion Spring Load Tolerances (Torque); Quality Grades
* Tolerances for Hot-Coiled Springs
* Tolerances for Retaining Rings; Diameter Tolerances
* Tolerances for Belleville Washers
* Tolerances for Special Spring Washers
* Tolerances for Flat Springs
~ Guidelines for Spring Testing
Helical Compression Springs
* Purpose
* Scope
* General
* Workmanship: Surface, Burr, Ground Ends, Closed Ends
* Dimensions: Wire Diameter, Spring Diameter, Number of Coils, Squareness, Parallelism, Bow, Free Length
* Performance Characteristics: Load/Rate Testing, Fixtures, Buckling
* Procedure for Load Testing: Stress Relaxation, Fatigue Life
Helical Extension Springs
* Purpose
* Scope
* General
* Workmanship: Burr, Surface, Tool Marks
* Dimensions: Special Terminology, Wire Diameter, Outside Diameter, Free Length, Number of Coils, Hook/Loops, End Relation, Pitch
* Performance Characteristics: Load/Rate, Initial Tension, Stress Relaxation, Fatigue Life
Helical Torsion Springs
* Purpose
* Scope
* General
* Workmanship: Burr, Surface, Shot Peening, Ends
* Dimensions: Wire Diameter, Spring Diameter, Number of Coils, Direction of Winding, End Relation, Length, Other Dimensions
* Performance Characteristics: Load/Moment/Rate Testing, Fixtures, Procedure for Load/Moment Testing
* Stress Relaxation
* Fatigue Life