PDF-DIMENSIONING

Introduction x2022 Rule of Thumb x2022 meter and yard x2022 International System of Units SI system xF0E0 ISO standards x2022 American National Standards Institutes ANSI xF0E0. 1 All dimension extension and leader lines shou ld be thin sharp dark lines 5mm2H 2 Extension lines indicate the points between which the dimension figures apply They are drawn perpendicular to the dimension lines start with a visibl e gap 132 betw 4 WHQVLRQ57347OLQHV57347DQG57347GLPHQVLRQ57347OLQHV 573607KH UVW57347GLPHQVLRQ57347OLQH57347LV57347VSDFHG57347D57347PLQLPXP57347RI573475736657362573715752457347RU57347573645736357347PP57347IURP57347WKH57347YLHZ57347DQG573475736457362573675752457347R Datum and Tolerance Accumulation . Possible Tolerance Conditions . Block Example . Specific Tolerances for Slip and Press Fits. Machine Tolerances . Tolerance Block . This presentation includes the following concepts . Other geometric tolerances:. profile. runout. & total . runout. flatness. angularity. perpendicularity. parallelism. Geometric Characteristics. 2. Form, Orientation, Profile, and . Runout. Tolerances. Fiducialisation and shims dimensioning. Sylvain GRIFFET, . 24/01/2011. Measurements performed on the . 3. rd. week of January 2011. 1. /5. Measurement objectives. Unfortunately . neither the . girders or cradles (but to a lesser extent) . Chapter 7, Virtual Condition. Introduction. Chapter introduces an important concept related to the mating of parts in an assembly.. Interchangeability of parts and assemblies can only be ensured when parts are accepted at virtual condition or better.. Dimensions. What is dimensioning?. Communicating shape and size in a clear fashion. #1 Rule for Dimensioning: Provide the dimensions which most clearly and accurately show the size and location of a feature. . Practice dimensioning drawings. Questions about DP?. Lines. Line . types. (e.g., part, hidden, center). Line . values. (e.g., thick, intermediate, construction). It is important to use the proper line type and line value in your drawings. It communicates important information and makes drawings easier to understand.. Dimension. Guidelines. 1. Dimensions should NOT be duplicated, or the same information given in two different ways.. Incorrect. 1. Dimensions should NOT be duplicated, or the same information given in two different ways.. © 2012 Project Lead The Way, Inc.. Introduction to Engineering Design. Dimensioning Standards. In order for the drawings to be dimensioned so that all people can understand them, we need to follow standards that every company in the world must follow. Standards are created by these organizations. Making things fit. General rules of dimensioning (1). Dimensions . should NOT be duplicated, or the same information be given in two different . ways.. No . unnecessary dimensions should be used - only those needed to produce or inspect the . Product Definition . and Related Documentation Practices. By . Fredric . Constantino. In 1957 the first . edition of Y14.5 American Drafting Standards . Manual, Section . 5, Dimensioning and Notes, was . Will Durfee & Tim . Kowalewski. Department of Mechanical Engineering. University of Minnesota. Opening comments. Engineering graphics is the method for documenting a . design. Mechanical engineering students must be familiar with standards of engineering graphics as it is expected in industry. Introduction to Standard Geometrical Tolerance Datum and Tolerance Accumulation Possible Tolerance Conditions Block Example Specific Tolerances for Slip and Press Fits Machine Tolerances Tolerance Block