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INTRODUCTION FOR  TOLERANCE STACKUP ANALYSIS TRAINING

Tolerance Stack is a study of dimensional relationships within a part or assembly. When a designer or engineer calculates a Tolerance Stack, he or she is calculating the maximum or minimum of: tolerance stackup analysis training

• Part tolerances
• Part wall thicknesses
• Part travel
• Space available for a part

Allocating tolerances that meets assembly build, performance, process capability and least-cost requirements have always been a challenge for the manufacturing industry. G D & T incorporation in any company is never complete without the understanding and Implementation of Tolerance Stacks as a part of the design process.

COURSE OBJECTIVES

• • Problem solving with underlying mathematical models and assumptions
  • Advantages of each approach along with limitations are clearly explained
  • Unique approach from design perspective for developing G D & T based drawings
  • Estimation of PPM at design stage

COURSE CONTENTS

• Introduction to Tolerance Analysis
  • Why TA is important?
  • Two major types of TA

• The Tolerance Stackup sketch
• • Three things required for a Tolerance Stackup sketch
  • Conversion of Tolerances to Equi- Bi- lateral Tolerancing
  • Tolerance Stackup report

• Worst case Tolerance Stackup
  • Step by step calculation
  • When to use worst case TA?
  • Assumptions in Tolerance Stackup

• Statistical Tolerance Analysis RSS
  • When to use statistical TA?
  • Root sum square (RSS)
  • Monte Carlo method

• Stacks using coordinate dimensions
• Stacks using runout & concentricity
• Stacks using profile
• Stacks using position
• Stacks using form controls
• Stacks using orientation controls
• Understanding Process Capability
• Common mistakes in Tolerance Analysis Practice