Drafting of various geometries using Chamfer, Fillet tool in AutoCad

Aim: Drafting of various given geometries using Chamfer, Fillet tool in AutoCad

Introduction: AutoCad offers various functions and tools to improve the designing thus enhancing the easiness, some of them are fillet, chamfer, rotate, mirror, etc.

Initial procedure:

• Start by typing QNEW in the command box
• Advanced Setup > Set the Units, Angle, Angle measure, Angle direction and area.
• After settings provide the lower limit and upper limit.
• Now we can start the sketching.

• Drawing No:1

Procedure: 

• In Advanced Setup, select Decimal and set precision to 0.000
• In the command box, type Polyline and specify the first start point 1,1
• Specify the next point @3<0
• Specify the next point @2.12<45
• Specify the next point @2.83<135
• Specify the next point @2<180
• Now close.
• Now type OBJECTSNAP in the command box, and click on for END-POINT and MID-POINT.
• Select the Mid-point of line with 3m length, i.e; the base line here.
• Now draw a line using Line @1<90
• Use the option centre-diamter in circle, and provide the last point as the center and diameter as 1.20.
• Now delete the line joining the points, mid of the 3m line and @1<90.
• Now select the mid point of the base line with 3 m and draw a line making the mid point as the start point, to the next point as @2.50<90.
• Use the option centre-diamter in circle, and provide the last point as the center and diameter as 0.80.
• Now delete the line joining the points, mid of the 3m line and @2.50<90.

Result:

Drawing No:2

Procedure:

• In Advanced setup select Architectural and set the precision to 0'-0"
• Now Select the Polar tracking as 45,90,135,180
• Using Line command, select any random point as the first point.
• Point the cursor to the left with an angle of 135, and type the distance as 3'
• Point the cursor to the right with an angle of 45, and type the distance as 2'-6"
• Point the cursor to the right with an angle of 0, and type the distance as 3'-1"
• Point the cursor to the right with an angle of 45, and type the distance as 1'-5".
• Point the cursor to the right with an angle of 90, and type the distance as 1'-9"
• Point the cursor to the right with an angle of 180, and type the distance as 8'.
• Now close .

Result:

Drawing No:3

Open the autocad- click on wizard in the dialogue box- advanced settings-set units as engineering ,( it will be in feet and inches in decimal)

            set angle in degree 

           mark angle direction in anticlockwise

 Procedure:  Create a rectangle

• Command "REC" - click on a point where we nedd to place rectangle
• Click on "dimension" give the length as 5'0.1" and width as 3'3''. and create rectangle
• Use command "CHA" for chamfer 
• Click on "ANGLE" ,
• Then specify the distance of first line to be chamfered- give it as 1'9".
• Then specify the chamfer angle from the first  line as 55 degree.
• Comment "EXPLODE" and click the rectangle ,so that each line can be selected seperately.
• Drawn an offset of 1'6" vetically and 1'3" horizontally from the side of rectangle.
• Create circle with centre-diametr method , the intersecting of two offseted line willbe the centre.
• Command "C" - specify centre- click on intersecting lines.
• Click on "dimaeter" and give the value as 1'6"
• Erase both the offsetted lines by command "E" select the objects and press enter.

Result :

Drawing No:4

Procedure:

• In Advanced Setup, select Decimal and set precision to 0.0
• Start sketching by selecting PolyLine in the command bar
• Specify the starting point as any random point.
• Switch On the ortho 
• Start sketching by inputing the distance 3.0
• Next point length as 0.5
• Next point length as 2.5
• Next point length as 2.5
• Next point length as 2
• Next point length as 3
• Next point length as 2.5
• Next point length as 2
• Now press Esc
• Start from the first initial point to length 3
• Now join the two lines.

Result:

 

DRAWING 5:

Procedure:

• New page select decimal and precision 0.00 while keeping ortho on.
• Command line: 6.00m vertical. 11.50m horizontal and 6.00m vertical and 11.50m horizontal.
• In object snap setting keep midpoint, centre, intersection and geometric centre on.
• Command Circle: Draw circle at the centre with diameter 3.00m 
• Command offset: offset 6.00m line at a distance of 3.00m on both sides and offset the 11.50m line at adistance of 3.00m.
• Command circle: Draw concentric circles at the intersection of the offsetted line of diameter 1.00m and 2.00m on both sides.
• Command erase: Erase the offsets.

 Result:

DRAWING 6:

Procedure:

• New page select decimal with precision 0.0.
• Command line:1.Sm horizontal and 1.5m vertical on both sides.
• Command offset offset 1.5m line to 0.5m.
• Command divide: Divide 1.5m line into 3 segments.
• Command line-: Join the divided lines.
• In object snap setting keep the Extension On
• Command line: Draw 2.0m line and 1.5m line and O.5m horizontal on top and ln vertical and 1.5m horizontal and O.5m vertical and join the slant line.
• Command line:2.0m horizontal and 1.5m vertical on both sides.
• Command offset: offset 1.5m line to O.5m.
• Command divide: Divide 1.5m line into 3 segments.
• Command line: Join the divided lines.

 Result:

DRAWING 7:

Procedure:

• New page and set decimal and precision to 0
• Command line: Drawing 210m horizontal line and 100m vertical line on left side and 75m vertical line on right side, since arc has radius of 25m drawing a line of 70m on left side and has a radius of 35m drawing a line of 100Om on right side.
• Command Arc: From start, end and radius draw an arc of radius 25m on right side and an arc of radius 35m on left side.
• Command Circle: From midpoint of 70m line on left side draw a cirle of diameter of 5Om and 30m on right side.
• Command offset Offset 210m line at a distance of 60m.
• Command fillet:Filleting to radius 15m on top right and left and radius of 20m on inner left and radius of 6m on inner right.
• Command offset:offsetting 210m line to !Om and 100m and 75m line to 20m.
• Command rectangle·:70m length and width of 30m from off setted line on both sides.
• Command erase: Erasing the otfsetted line and unwanted lines.

Result:

Drawing No:8

Procedure:

• Using the Line command, draw line of distance 8.550
• From Menu bar, select centre-diameter from circle. Centre is the end point of 8.550 and diameter is 0.9
• From Menu bar, select centre-radius from circle, taking the end point of 8.550 as centre and 0.90 as radius.
• Again from the Menu bar, select centre-diameter from circle. Centre is the end point of 8.550 and diameter is 0.9
• From Menu bar, select centre-radius from circle, taking the end point of 8.550 as centre and 0.90 as radius
• Again from the Menu bar, select centre-diameter from circle. Centre is the mid point of 8.550 and diameter is 5
• From Menu bar, select centre-diameter from circle, taking the mid point of 8.550 as centre and 4 as diameter
• Join the tangents of the outer circle using lines.
• Trim the unwanted lines

Result:

Drawing No:9

Procedure:

• From the advanced setup, select units type, Engineering precision to 0,0
• Using Line command, sketch a line of 32'6"
• Using Centre-diameter from circle in the menu bar, construct a circle with centre as the end point of= 32'6" and diameter 8'
• From the Menu bar, select center-diameter from the cicle, and construct a circle with center as the end point of line 32'6" and diameter 9'
• From start, end and radius drawing, an arc of radius 41'8" on top and 20'10" on bottom
• Now trim the unwanted lines.

Result:

Drawing No:10

Procedure:

• Command rectangle: Draw a rectangte of same length and same width of one smaller size and another slightly bigger one from common centre.
• Command Rotate: Rotating the drawn squares by 45 degree keeping the copy
• Command trim:Trim the crossing lines according to the figure.

Result:

DRAWING 11:

Procedure:

• New page and set engineering and precision 0'0"
• Command line: Draw 10' -2" horizontal line, 9' vertical line, 3' horizontal line,4'-6" vertical and horizontal line and 1'-2" vertical line.
• Command mirror: Mirror the above lines at centre axis.
• Command offset: offset the 20'-4" to a distance of 6'-9" arnd 13'-6'' to a distance of 10'-2".
• Command Rectangle: Draw a rectangle of length and width 3' from the centre point of off setted line.
• Command Move: moving the centre of rectangle to the centre of offsetted line.
• Command rotate: Rotating the Rectangle by 45 degrees
• Command offset: Offsetting 20'-4" to a distance of 2'-8" with polar tracking on draw an angle of 90 degrees. Offset 20'-4" to a distance of 3'-7' with polar tracking on draw an angle of 60 degrees.
• Command erase: Erase the unwanted lines.

Result: