Mechanical Engineering Drawing WorkshopJIS Drawing Part 11.Sample Drawings2.Drawing sheets3. Views and proection methods!. "ine #on$entions%. Scales&. Sectional drawings'. Detail drawings(. Dimensioning). *olerancing o+ "inear and ,ng-lar Dimensions#ontent.1Sample Drawings2Sample 13Sample 1!Sample 2%Sample 2&Sample 3'Sample 3(Drawing sheets)Drawing sheets/rame area*itle 0lockSi1e ,23,!#entering mark12*itle 0lock/rame areaDrawing sheets11Views and proection methods12Views13Views1! 4rthographic proection,.+ront $iew5principal $iew67.top $iew#.le+t side $iewD.right side $iewE.0ottom $iew/.rear $iewS8m0ol o+ third angle proectionViews/ DD##77,,/EEthird angle proection method1%1& Principal $iew 1Views1' Principal $iew 2Views1( Principal $iew 3Views1) *he other $iewsViewsPrincipal $iew22"ine #on$entions21"ine #on$entions 9inds o+ lines 5contin-it86 9inds o+ lines 5thickness6#ontin-o-s lineDashed line"ong3dashed dotted line"ong3dashed do-0le3dotted linekinds thickness ratio*hin line 1*hick line 2E:tra thick line !22kinds of linesthick continuous line visible linethin continuous linedimension lineprojection lineleader linethin dashed lineorthick dashed linehidden outlinethin long-dashed dotted line center linethin freehand line line of limit of partial or interrupted view and section ;ow these lines are -sed"ine #on$entions23*hick contin-o-s line*hin dashed line*hin long3dashed dotted line*hin +reehand line*hin contin-o-s line"ine #on$entions2!Scales2% Val-e o+ scales"ine #on$entionsKinds of scales endorsed scaleEnlargement scale 50:1 20:1 10:15:1 2:1Full scale 1:1Reduction scale 1:2 1:5 1:101:20 1:50 1:1001:200 1:500 1:10001:2000 1:5000 1:100002&Sectional $iews2'Dimensionsare omittedK-KJ-J#-t 08 one plane#-tting plane#-tting plane2(Dimensionsare omitted#-t 08 two planes"Plane 1Plane 22)Dimensionsare omitted, section o+ a s8mmetrical part32Dimensionsare omittedS-ccessi$e sections31Detail drawings3233Dimensioning3!Description Symbol Usagediameter Put before dimensionvalue of diameter.radius RPut before dimensionvalue of radius.spherical diameter SPut before dimensionvalue of diameter ofsphere.spherical radius SRPut before dimensionvalue of radius of sphere.square Put before dimensionvalue of square.thickness of board tPut before dimensionvalue of thickness ofboard.45 degree chamfers CPut before dimensionvalue of 45chamfers. Dimensioning s8m0olsDimensioning3%Some dimensionsare omitted3&Dimensioning Dimensioning s8m0olsDescription Symbol Usagediameter Put before dimensionvalue of diameter.radius RPut before dimensionvalue of radius.spherical diameter SPut before dimensionvalue of diameter ofsphere.spherical radius SRPut before dimensionvalue of radius of sphere.square Put before dimensionvalue of square.thickness of board tPut before dimensionvalue of thickness ofboard.45 degree chamfers CPut before dimensionvalue of 45chamfers.3'Dimensionsare omitted3(
