WSQ Tolerance Stackup and Analysis in Mechanical Design

Introduction

Mechanical designs can be complex involving numerous parts and sub-assemblies. In the manufacture of these parts and sub-assemblies, they are subjected to variation. Hence, a better understanding of their form, fit and function is vital. For better clarity and quality acceptance, more firms are now specifying their engineering drawings using GD&T symbols so as to better control its geometric and functional characteristics. Tolerance stackup methods are then used to ensure that the cumulative effects of these tolerances are acceptable to the functional aspects in a sub-assembly. In this course, a disciplined tolerance stackup and analysis approach would be applied on engineering part assemblies subject to different and multiple GD&T specifications.

Course Objectives

1. To be able to identify, determine and ascertain the degree and variation of fit about a particular design assembly.

2. To learn the principles and methodologies in evaluating design tolerances through a disciplined approach.

3. To be proficient in applying tolerance stackup approaches on GD&T specified parts.

4. To appreciate the merits of tolerance analysis and stack-up in engineering design for part/assembly tolerance optimisation.

5. To apply tolerance analysis and stack-up for technical and economic competitive advantages.

Underpinning Knowledge:

1. To know the definitions and principles of tolerancing and fit functions.

2. To learn the various tolerance stack analysis tools and use them to perform tolerance stack analysis on part/assembly.

3. To apply the various tolerance analysis tools and techniques to determine the intended functional relationships with or without GD&T specifications.

Course Outline

Day 1

* Understand and Use of Tolerance Development Process Methods

Day 2

* Understand and Use Tolerance Limit Setting for Part Yield, Statistical Tolerance Analysis Methods for Manufacturing Process Applications, and Sensitivity Analysis methods for Tolerance Optimisation

* Assessment 1

Day 3

* Applying Tolerance Analysis on GD&T Engineering Drawings with GD&T Specifications

Day 4

* Assessment 2

* Tolerance Analysis and Stackup on Location Tolerances for Part and Assembly Stacks

Day 5

* Tolerance Analysis and Stackup on Runout Tolerances for Part and Assembly Stacks

* Tolerance Analysis and Stackup on Multiple Geometric Tolerancing for Part and Assembly Stacks

* Revision - Discussion and Clarifications

* Assessment 3

Trainer

Professor Lye Sun Woh

Sun-Woh Lye, PhD, FIES, is currently a professor from the School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore. He has taught for more than 20 years at both undergraduate and graduate levels relating to design and manufacturing modules such as Design Optimisation and Analysis, Computer Aided Design, Engineering, Advanced Product Design for Manufacture, Virtual Design for Manufacture, Industrial Design, Machining and Process Engineering. He is also active in conducting of professional engineering courses as well as served as consultant at both project advisory and development roles to companies in his area of expertise. Besides teaching, he had held administrative positions in overseeing of graduate and research programmes, fostering research projects and funding, transfer and commercialisation of technological innovations.

Who Should Attend

This course relates to all personnel needing to understand, evaluate and compute the tolerance variations of the functional relationships of the parts/assembly as highlighted in the engineering drawings.

Relevant occupations include:

• Engineering Managers

• Product Designers

• Process and Tooling Engineers and Technical Personnel

• Quality Control Engineers and Inspectors

• Procurement Personnel

Assessment and Certification Criteria

• Throughout the course, participants are required to complete assessments. The answer scripts will be marked by the Trainer, or an assessor appointed by NTU-CCE.

• To be eligible for subsidy, participants must:

   - be Singaporeans or Permanent Residents of Singapore

   - achieve 75% attendance

   - pass the required assessments to receive their SOAs, or face a re-test within 2 weeks after the last day of the course.

   * Participants who do not fulfill the above criteria are not eligible for subsidy, and are required to pay the course fee in full.

• Upon completion and passing of all required assessments, participants will receive a formal recognition through the award of a Statement of Attainment (SOA) from the Singapore Workforce Development Agency (WDA).

(The SOA is a nationally-recognized qualification by WDA indicating the participant’s ability of competence in a particular area to perform a task appropriate to her/his occupational level and work demands.)

Course Details

Date:

Duration:

Time:

Venue:

Closing Date:

Fee:

To be confirmed

5.0 days

9:00am to 5:00pm

NTU@one-north campus, Executive Centre [map]

To be confirmed

Standard: S$1,580.00

Nett Fee: S$158.00 (After 90% SPUR subsidy)

Course fees are inclusive of:

• Course Materials

• Light refreshments

• Lunch

• Complimentary parking (1 entry/day) - applicable at NTU@one-north campus only.

• Prevailing GST

Online Registration

>> CLICK HERE to Register Online

Others

Methods of Payment

• Credit Card (Visa, Mastercard & AMEX only)

• Cheque made payable to Nanyang Technological University

• Invoice to Company (for Company Sponsored Participants)

• E-invoice (for Government Organizations)

Cancellation and Refund Policy

• Written notification to cce@ntu.edu.sg or fax: (+65) 6774 2911 at least 10 days before course commencement

No cancellation charge, Full refund of Course Fee

• Written notification within 4 – 9 days before course commencement

50% Refund of Course Fee

• Written notification within 3 days before course commencement

No Refund of Course Fee

Note

• Course is subject to a minimum participation before commencement

• NTU-CCE reserves the right to change or cancel any course or trainer, in light of unforeseen circumstances

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