Drafting of various geometries using Chamfer, Fillet tool in AutoCad

AIM:

To draw the given sketches in autocad.

INTRODUCTION:

Autocad offers various tools like rotate,chamfer,fillet,move,offset etc to ease thr sketching process.

PROCEDURE:

DRAWING 1:

• Open new file and set decimal and precision to 0.00.
• Command line: From random point draw 3.00 m line and @2.12<45, @2.83<135 then 2.00m line and close.
• Command offset:Offset 3.00m line to 1.00m and 2.50m.
• Command circle:From midpoint of 3.00m line at 2.50m and 1.0Om draw a circle of diameter of 1.20 at 1.00m and 0.80 at 2.50m.
• Command erase:Erase the offsets

DRAWING 2:

• Select architectural and polar tracking for angles 15,30,45,60 and so on.
• Command line: Draw a horizontal line and draw 2'6'' line at 225 degrees, 3' line perpendicular to it, 2'5'' vertical line and 8' horizontal line, 1'9'' vertical line and 2'10'' @225 degrees and close.

DRAWING 3:

• Open new file and set engineering and precision to 0'-0.0"
• Command line: 2'-6.5" in -ve X-axis, 3-3" in -ve Y-axis, 5-0.1" in +ve X-axis, 1-6.0" in +ve Y-axis and close.
• Command offset: offset 3'-3" line at a distanceof 1'-3.0" and 5'-0.1" at a distance of 1'-6.0"
• Command circle: draw a circle of diameter of 1'-6.0" from the centre of offsetted lines.
• Command erase: Erase the offsets.

DRAWING 4:

• New page and select decimals with precision 0.00 while keeping ortho on.
• Command line:Draw 3.00m line in +ve X axis
• 0.50 In -ve Y axis, 2.50m in +ve X axis, 2.50m in +ve Y axis, 2.00m in -ve X axis, 3.00m in +ve Y axis, 2.50m in -ve X axis, 2.00m in -ve Y axis, 3.00m in -ve Y axis and close.

DRAWING 5:

• 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.

DRAWING 6:

• 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
• C0mrmand 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.

DRAWING 7:

• 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 35m drawing a line of 70m on left side and has a radius of 25m drawing a line of 5Om on right side.
• Command Arc: From start, end and radius draw an arc of radius 35m on right side and an arc of radius 25m on leh 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.

DRAWING 8:

• New page set decimal and precision to 0.00
• Command cirde:Draw concentric circles of diameter 5.00m and 4.00m
• Command line: From the centre point of circle draw 4.275m line on both sides.
• Command circle: Drawing a circle of diameter 0.90m on both sides.
• Command arc: from start, end and radius draw an arc of radius 0. 90 on both sides
• Command line: Join the lines to the arc.

DRAWING 9:

• New page and set Engineering and precision to 0'-0"
• Command Line: Draw a 32'-6'' horizontal line.
• Command circle:Draw a circle of radius 8' on left side of line and radius of 9' on right side of line.
• Command Arc: From start, end and radius drawing a arc of 41'-8" on top and 20'10" on bottom.
• Command trim: trim the unwanted line and curves.

DRAWING 10:

• 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.

DRAWING 11:

• 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:

The given drawings have been drawn using autocad.