10 Tolerancing. 10 Tolerancing Define terms related to tolerancing. Explain how tolerances are expressed on a drawing. Identify tolerance values for.

Slides:



Advertisements
Similar presentations
Fits and Tolerances Lecture 20 Autumn Quarter.
Advertisements

Tolerancing II Engr 135.
Lecture 2 – Clearance Fits
Geometric Tolerances J. M. McCarthy Fall 2003
Tolerances.
Forging new generations of engineers
Design Dimensioning and Tolerancing J. M. McCarthy Fall 2003  Overview of dimensions  Dimensioning various features  Limits of size  Classes of fits.
Precision Dimensioning
8-6 Fits and allowances The FIT between two mating parts is the relationship between them wrt the amount of clearance or interference present when they.
Tolerance Calculations
Tolerances Cylindrical Fits & Geometric Tolerances
Tolerances Cylindrical Fits & Geometric Tolerances ENGR a
Engineering Graphics Stephen W. Crown Ph.D.
MECHANICAL DRAWING Chapter 10: TOLERANCES AND FITS
CSWA
Tolerance Dimensioning
Glossary of Terms.
ADVANCED MECHANICAL DRAFTING
Dr. HABEEB HATTAB HABEEB Office: BN-Block, Level-3, Room-088
Tolerance: Controlling of Variability
Fits and Tolerances *TWO PART LECTURE
Dimensioning Review Objectives:.
Ch.9 Tolerancing Objective: Learn how to present tolerance, types of tolerance presentation, fit types and terminology Why tolerance is so important in.
Tolerancing READING! - Today Lamit - Chapter 13 NEXT WEEK!
Tolerancing Chapter Technical Drawing 13 th Edition Giesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart © 2009 Pearson Education, Upper Saddle.
TECH 104 – Technical Graphics Communication
General Tolerance and Hole Fit
Fits & Tolerances.
Basic Geometric Dimensioning & Tolerancing (GD&T)
CGT 110 – Technical Graphics Communication
Tolerancing Chapter 11.
Printing Instructions:
1 Introduction to Engineering Tolerancing – 1: Control of Variability & Reading Construction and Working Drawings Goals Understand the description and.
Dimensioning and Tolerancing
Tolerances. EML 2023 Computer Aided Design Introduction tolerancing –technique of dimensioning parts within a required range of variation to ensure interchangeability.
Geometric Dimensioning and Tolerancing GD&T. What is GD & T?  Geometric dimensioning and tolerancing is an international language used on drawings to.
Introduction to Engineering Tolerancing - 2 Agenda Determining limits Use standard tables for tolerancing and control fit.
Tolerance Geometric Tolerances and Dimensioning. Why Geometric Tolerancing and Dimensioning To ensure interchangeability of mating parts during assembly.
Ahmed M. El-Sherbeeny, PhD Industrial Engineering Department
 The choice of the most suitable dimensioning method depends on how the part will be produced  Unit production: each part is made separately  Mass production:
 LIMTS FITS AND TOLERANCES  INSPECTION  TYPES OF INSPECTION.
GEOMETRIC DIMENSIONING & TOLERANCING (GD & T)
Tolerance Dimensioning
Limits and Fits Need for different types of fit Limits of size and Tolerance Principal Terms Explained Definition of different types of Fit.
Engineering H191 - Drafting / CAD Gateway Engineering Education Coalition Lect 21P. 1Autumn Quarter Review of Fits and Tolerances AutoCAD 3D Multiview.
Handout 10a1 TOLERANCES - Introduction Nearly impossible to make the part to the exact dimension by any means of manufacturing approach  tolerances of.
C H A P T E R E L E V E N TOLERANCING. 2 Technical Drawing with Engineering Graphics, 14/e Giesecke, Hill, Spencer, Dygdon, Novak, Lockhart, Goodman ©
Fits and Tolerances: Linear and Geometry.
Review of Fits and Tolerances AutoCAD 3D Multiview
Tolerances Introduction to Engineering Design
Tolerancing Chapter 11.
Section 4 Advanced Applications
Limits and Fits Need for different types of fit
Precision Dimensioning
Tolerances Introduction to Engineering Design
Engineering Drawing and Design Chapter 8 Basic Dimensioning
Tolerances Introduction to Engineering Design
Instructor: James Thornburgh
Engineering H191 Engineering Fundamentals and Laboratory I
Precision Dimensioning
Tolerances Introduction to Engineering Design
Forging new generations of engineers
Tolerances Flóra Hajdu B406
Fits & Tolerances.
LIMITS FITS AND TOLERANCES
Embodiment Design: Dimensions and Tolerances
Tolerances.
Fits and allowances Flóra Hajdu B406
Tolerances Introduction to Engineering Design TM
Presentation transcript:

10 Tolerancing

Define terms related to tolerancing. Explain how tolerances are expressed on a drawing. Identify tolerance values for dimensions on the drawing, regardless of the tolerancing expression. Compare customary inch tolerance classes with metric tolerance classes. Calculate tolerances or limits for mating parts based on maximum material conditions and allowance.

Tolerancing Defined Tolerance is the total amount by which a dimension can vary Expressed as: Bilateral Unilateral Limits

Tolerancing Defined In each of these examples, the tolerance is .008

Tolerancing Applied Tolerances can be applied to both location and size dimensions

Tolerancing Concepts Basic hole system: system for calculating the limits of a hole-shaft relationship Maximum material condition: condition of a feature wherein the most material is present Least material condition: condition of a feature wherein the least material is present Allowance: tightest fit of two parts calculated by comparing maximum material conditions

Datum Identification A datum may be represented by a surface, center plane, or an axis

Dimension Origin Symbol

American Standard Tolerances Classifications for ASME fits: Running or sliding clearance fits (RC) Locational clearance fits (LC) Transitional clearance or interference fits (LT) Locational interference fits (LN) Force or shrink fits (FN)

Metric Tolerances and Fits Classifications for metric fits:

What is the difference between tolerance and limits? Tolerance is the total amount by which a dimension can vary. Limits are the extreme maximum and minimum dimensions allowed by the tolerance.

What is the difference between a unilateral tolerance and a bilateral tolerance? A unilateral tolerance varies from the dimensional value in one direction only (either plus or minus). A bidirectional tolerance varies from the dimensional value in both plus and minus directions.

What are the two basic ways in which tolerances are expressed on the dimensions of a drawing? Plus-and-minus dimensioning and limit dimensioning (may also be expressed as a general tolerance in the tolerance block).

If a dimension is 2.235 .005, what is the tolerance? .010

How does the metric system of tolerances and fits differ from the American system? The concept is the same between the two systems, but different notation is used.

If a hole is . 187+. 002/–. 000 and a shaft is . 187+. 000/– If a hole is  .187+.002/–.000 and a shaft is  .187+.000/–.003, what is the allowance? .000