REVIEW - Dimensioning, Tolerancing & Mat Finish

REVIEW - Dimensioning, Tolerancing & Mat Finish -...

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Unformatted text preview: MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Dimensions MTS 242 Computer Aided Drawing 2 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 The Real World MTS 242 Computer Aided Drawing 3 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Content MTS 242 Computer Aided Drawing Overview Terminology Basic Concept Standard Practice Detail Dimensioning Dimensioning Techniques AutoCAD MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing 5 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing Overview Dimension is a way of displaying the size information and feature location on a drawing Generally consist of lines and number: dimension lines extension lines leader lines number to indicate the measurement 6 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing Overview 7 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing Proper dimensioning should give enough information to manufacture the component! BUT NO REDUNDANCY!! Overview 8 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing Overview GOOD! BAD! 9 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing Overview Designs are dimensioned based on two criteria: Basic sizes and locations of features Details for construction and for manufacturing The unit of measurement should be consistent mm or inches mm, inches, etc . should be written on drawing C R I T E R I A 10 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Overview MTS 242 Computer Aided Drawing Overview Generally two types: Linear dimension: Example: mm Angular dimension: in degree, minutes and seconds 11 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Example MTS 242 Computer Aided Drawing Overview MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Terminology & Basics MTS 242 Computer Aided Drawing 13 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Terminology MTS 242 Computer Aided Drawing Terminology 14 01 INTRODUCTION 01 INTRODUCTION MEMB113 | Dept. of Mechanical Engineering | UNITEN | 2005 Basics MTS 242 Computer Aided Drawing Basic Concept Size dimension May be the overall width of a part or the diameter of a hole Location dimension May be the length from the edge of an object to the center of a feature 15...
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REVIEW - Dimensioning, Tolerancing & Mat Finish -...

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