MECHANICAL DRAWING

By ROBERT MARTIN

CONTENTS 1 SHEET LAYOUT & DRAFTING EQUIPMENT 11 SHEET SIZES 2 LINETYPES AND SCALE 21 LINETYPES 22 SCALE 3 DIMENSIONING 31 GENERAL PRINCIPLES OF DIMENSIONING 32 APPLICATIONS 33 METHOD OF DIMENSIONING 34 INDICATION OF LINEAR AND ANGULAR TOLERANCES ON TECHNICAL DRAWING 4 CONVENTIONAL REPRESENTATION USING SP – 46 (1988) 41 LONG AND SHORT BREAK LINE USED FOR RODS, SHAFTS AND PIPES 42 CONVENTIONAL REPRESENTATION OF THREADED PARTS 43 CONVENTIONAL REPRESENTATION OF GEARS ON TECHNICAL DRAWINGS 44 STANDARD CONVENTION OF DIFFERENT TYPES OF SECTIONS 45 CONVENTIONAL REPRESENTATION OF SQUARE ENDS AND OPENINGS 46 PARTS LOCATED IN FRONT OF A CUTTING PLANE 47 VIEWS OF SYMMETRICAL PARTS 48 INTERRUPTED VIEWS 49 SIMPLIFIED REPRESENTATION OF REPETITIVE FEATURES 410 ELEMENTS ON A LARGER SCALE 411 INITIAL OUTLINES 412 USE OF COLOURS 413 TRANSPARENT OBJECTS 5 LIMITS, FITS AND TOLERANCES 51 REFERENCE TEMPERATURE 52 TOLERANCES OF PARTS 53 FITS 54 SYMBOLS FOR TOLERANCES, DEVIATIONS AND FITS 55 SELECTION OF FITS 56 SYSTEMS OF FITS 57 CLASSIFICATION OF FITS 58 CHOICE OF FITS AND TOLERANCES 59 RECOMMENDATIONS 510 GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSION’S 6 SURFACE TEXTURE AND WELDING SYMBOL 61 SURFACE TEXTURE 62 WELDING SYMBOL USED IN THE DRAWING 7 INTERSECTION OF SOLIDS 71 INTRODUCTION 72 APPLICATIONS 73 ABOUT CURVE OF INTERSECTION 74 METHODS OF DRAWING THE CURVE OF INTERSECTION 75 INTERSECTION OF CYLINDER AND CYLINDER 76 INTERSECTION OF PRISM AND PRISM 77 INTERSECTION OF CYLINDER AND PRISM 78 INTERSECTION OF CYLINDER AND CONE 8 SURFACE DEVELOPMENT 81 TYPES OF SOLIDS 82 METHODS OF DEVELOPMENT 9 ORTHOGRAPHIC VIEWS AND SECTIONS 91 ORTHOGRAPHIC PROJECTION PROCEDURE 92 ORTHOGRAPHIC VIEWS 93 CONSTRUCTION OF VIEWS IN DRAWING SHEET 94 VIEWS AND THEIR DIRECTIONS 95 CONSTRUCTION METHODS OF MULTIVIEW PROJECTION 96 FIRST-ANGLE PROJECTION 97 PICTORIAL VIEW TO ORTHOGRAPHIC VIEW 98 SPACING OF VIEWS AND STARTING OF DRAWING 99 SECTIONAL VIEWS 910 TYPES OF SECTIONAL VIEWS 911 DIFFERENT SECTIONS USED IN ENGINEERING DRAWING 10 DETAIL AND ASSEMBLY DRAWINGS 101 WORKING DRAWINGS 102 DETAIL DRAWINGS 103 ASSEMBLY DRAWINGS 104 DIFFERENT TYPES OF REMOVABLE FASTENERS 105 KEY JOINT 106 TYPES OF KEYS 107 COTTER AND KNUCKLE JOINTS 108 TYPES OF COTTER JOINTS 109 SOCKET AND SPIGOT COTTER JOINT 1010 DIMENSIONS FOR SOCKET AND SPIGOT COTTER JOINT IN RESPECT OF SHAFT DIAMETER (OR INSIDE DIAMETER OF SOCKET OR DIAMETER OF SPIGOT) 1011 KNUCKLE JOINT 1012 DIMENSIONING FOR KNUCKLE JOINTS 1013 SCREW THREADS, NUTS & BOLTS 1014 SCREW THREADS 1015 NOMENCLATURE OF SCREW THREAD 1016 FORM OF THE SCREW THREADS 1017 METRIC THREAD 1018 SQUARE THREAD 1019 ACME THREAD 1020 BUTTRESS THREAD 1021 ROUND OR KNUCKLE THREAD 1022 DIRECTION OF SCREW THREADS 1023 MULTISTART THREADS 1024 CONVENTIONAL REPRESENTATION OF THREAD 1025 FASTENINGS WITH NUTS AND BOLTS 1026 SPECIAL NUTS AND THEIR APPLICATIONS 1027 WASHER 1028 BOLTS 1029 BEARINGS 1030 TYPES OF BEARING 1031 SLIDING BEARINGS 1032 SHAFT COUPLING 1033 RIGID COUPLING 1034 FLEXIBLE COUPLINGS 1035 PULLEYS 1036 GEARS AND GEARING 1037 DIFFERENT TYPES OF GEARS 1038 SPUR GEAR NOMENCLATURE 1039 GEAR TOOTH CALCULATIONS 1039 DRAWING PROCEDURE OF SPUR GEAR 1040 LATHE TOOL POST 1041 LATHE TAIL STOCK 1042 PIPE VICE 1043 MACHINE VICE 1044 DRILLING JIGS 1045 STEAM STOP VALVE 1046 SCREW JACK 1047 PISTON, PISTON RINGS AND CONNECTING ROD