Drafting of various geometries using Chamfer, Fillet tool in AutoCad

Aim : To create various geometrics using chamfer and fillet tool in AutoCad

Procedure for default settings

• Open autocad application
• Type Qnew and open new drawing
• In create new drawing select wizard
• Select advanced setup
• Set units measurement as engineering, angle as decimal degree, angle measure as east, angle direction as clockwise, area as 9x12 inches and close the tab.
• Now enable the dynamic input, right click dynamic input and choose dynamic input settings. Go to pointer input setting and set default to cartesian format.
• Ortho mode is ON

Procedure for setting object snap

• Type OS in command bar
• Drafting setting box opens in which switch on for necessary tools
• Switch on object snap and object snap modes : Endpoint, Midpoint, Center, Nearest, Intersection, Tangent and Node
• Click Ok

Problem 1 :

Procedure :

• Enter command line L
• Specify the first point 1,1
• Specify next point : 3 by moving cursor towards right
• Specify next point : @2.12<45
• Specify next point : @135<2.83
• Specify next point : 2 by moving cursor towards left
• Enter close
• Draw a circle at a point 2.5, 2 and diameter of 1.2
• Draw another circle at a point 2.5,3.5 and diameter of 0.8
• Using Dimlinear, Dim aligned and Dim angular mark the dimensions

Using Chamfer tool

• Enter command line L
• Specify the first point 1,1
• Specify next point : 3 by moving cursor towards right
• Specify next point : 1.499 by moving cursor towards right (assume line A)
• Specify next point : 1.499 by moving cursor upwards (assume line B)
• Specify next point : 2 by moving cursor upwards (assume line C)
• Specify next point : 2 by moving cursor towards left (assume line D)
• Specify next point : 2 by moving cursor towards left
• Enter close
• Enter Chamfer in command
• Select distance
• Enter first distance 1.499, second distance 1.499 and then select the lines
• Press enter
• Similar way using chamfer tool
• Enter first distance 2, second distance 2 and then select the lines
• Press enter
• Now trim off lines A,B,C,D using trim tool
• Press enter
• Draw a circle at a point 2.5, 2 and diameter of 1.2
• Draw another circle at a point 2.5,3.5 and diameter of 0.8
• Using Dimlinear, Dim aligned and Dim angular mark the dimensions

Result :

Problem 2 :

Procedure :

• Set units to architectural
• Set precision in dimstyle to architectural
• Enter line L in command
• Specify first point 1,1
• Specify next point 8' by moving cursor towards right
• Specify next point 1'9'' by moving cursor downwards
• Specify next point @2'10''<-135
• Press enter
• Enter line L in command
• Specify first point 1,1
• Specify next point @2'5''<90
• Specify next point @3'<-60
• Specify next point @2'6''<30
• Join the two end points and close
• Using Dimlinear, Dim aligned and Dim angular mark the dimensions

Result :

Problem 3 :

Procedure :

• Enter command UNITS
• Change length type to engineering and precision to 0'-0"
• Enter command DIMSTYLE
• Click on modify
• Change primary units to engineering and and precision to 0'-0.00"
• Click okay and close
• Enter command line L
• Specify first point 1,1
• Specify next point 5'0.1'' by moving cursor towards right
• Specify next point 1'6'' by moving cursor upward
• Specify next point 1'9'' by moving cursor upward
• Specify next point 2'5.59'' by moving cursor leftside
• Specify next point 2'6.5'' by moving cursor leftside
• Enter close
• Enter Chamfer in command
• Select distance
• Enter first distance 2'5.59'', second distance 1'9'' and then select the lines
• Press enter
• Draw a circle at a distance of 1'3'',1'6'' from point 1,1 with diameter 1'6''
• Using Dimlinear and Dim angular mark the dimensions

Result :

Problem 4 :

Procedure :

• Enter command line L
• Specify first point 1,1
• Specify next point 0.5 by moving cursor upward
• Specify next point 3 by moving cursor leftside
• Specify next point 3 by moving cursor upward
• Specify next point 1 by moving cursor rightside
• Specify next point 2 by moving cursor upward
• Specify next point 2.5 by moving cursor rightside
• Specify next point 3 by moving cursor downward
• Specify next point 2 by moving cursor rightside
• Specify next point 2.5 by moving cursor downward
• Specify next point 2.5 by moving cursor leftside
• Press enter
• Using Dimlinear mark the dimensions

Result :

Problem 5 :

Procedure :

• Draw rectangle
• Specify first point 1,1
• Click on dimension and enter length 5.75 and width 6
• Press enter
• Draw circle at point as center 2.5,4 and diameter 2
• At same point as center draw another circle with diameter 1
• Draw circle at point as center 6.5,4 and diameter 3
• Press enter
• Enter mirror
• Select all objects and enter
• Select first, second point of mirror line and create a mirror image
• Press enter
• Trim off unnecessary lines
• Using Dimlinear mark the dimensions

Result :

Problem 6:

Procedure :

• Draw rectangle at point 1,1 with length and width as 1.5
• Draw another rectangle at point 1,1.5 with length as 0.5 and width as 1
• Copy this rectangle and make another two rectangles
• Paste it beside one another in the rightside
• Press enter
• Take a point 4,1 and draw rectangle with length 2 and width 1.5
• Enter command line L
• Specify first point as 4,1
• Specify next point 0.5 by moving cursor upward
• Specify next point 1.5 by moving cursor rightside
• Specify next point 1 by moving cursor upward
• Press enter
• Enter chamfer in the command
• Enter the distance
• First distance as 1 and second distance as 1.5
• Select the lines and press enter
• Trim off the lines according to diagram
• Draw rectangle at point 4,3 with length as 2 and width as 1.5
• Draw rectangle at point 4,3 with length as 2 and width as 0.5
• Copy this rectangle and make another two rectangles
• Paste it beside one another in the upperside
• Using Dimlinear mark the dimensions

Result :

Problem 7

Procedure :

• Enter command line L
• Specify first point 1,1
• Specify next point 100 by moving cursor upwards
• Specify next point 210 by moving cursor rightside
• Specify next point 75 by moving cursor downwards and press enter
• Now draw an arc of radius 25 (diameter 50) using start, end (50) and angle (-180 degree)
• Press enter
• Draw a circle of diameter 30 using center of previous drawn arc and press enter
• Draw a line of length 15 by moving cursor upwards
• Specify next point 90 by moving cursor leftside
• Specify next point 40 by moving cursor downward
• Now draw an arc of radius 35 (diameter 70) using start, end (70) and angle (-180 degree)
• Press enter
• Draw a circle of diameter 50 using center of previous drawn arc and press enter
• Draw two rectangles of length 70 and width 30 at a distance x=20,y=10 at the top of diagram and press enter
• Using fillet tool draw an arc of radius 15 (at @0,100) and press enter
• Using fillet tool draw an arc of radius 15 (at @210,100) and press enter
• Using fillet tool draw an arc of radius 6 (at @160,40) and press enter
• Using fillet tool draw an arc of radius 20 (at @70,40) and press enter
• After fillet, using trim tool trim off the edge lines
• Using Dimlinear, Dimradius and Dimdiameter mark the dimensions

Result :

Problem 8:

Procedure :

• Draw a circle of diameter 0.9 (circle 1)
• Draw two lines of length 4.275 and 8.55 from the center of circle 1
• At a distance of 4.275 from the center of circle 1 draw two another circles of diameter 5 (circle 3)and 4
• At a distance of 8.55 from the center of circle 1 draw a circle of radius 0.9 (circle 2)
• Draw a line of 1.8 length which is tangent to circle 1(on left side)
• Draw a line of 1.8 length which is tangent circle 2 (on right side)
• Draw an arc using start end and radius (0.9) using end points of line 1.8 on both sides of diagram
• Draw tangent from circle 3 to left side arc using line tool ( specify first point : hold shift+right click, click on tangent)
• Draw tangent from circle 3 to right side arc using line tool ( specify first point : hold shift+right click, click on tangent)
• After drawing tangent trim off the remaining arc
• Remove lines 1.8, 4.275 and 8.55
• Using Dimlinear, Dimradius and Dimdiameter mark the dimensions

Result :

Problem 9

Procedure :

• Set units to architectural
• Set precision in dimstyle to architectural
• Draw a circle of radius 8' from point 1,1 (circle 1)
• Press enter
• Draw another circle of radius 9' from at a distance of 32'6'' from start point (circle 2)
• Press enter
• Now draw a circle using tangent, tangent, radius with radius 41'8'' (selecting tangents of circle 1, circle 2)
• Press enter
• Now draw another circle using tangent, tangent, radius with radius 20'10'' (selecting tangents of circle 1, circle 2)
• Press enter
• Using trim tool, trim off extra according to diagram
• Using Dimlinear and Dimradius mark the dimensions

Result :

Problem 10

Procedure :

• Enter REC in command
• Specify first point 1,1
• Draw a rectangle with length and width as 10
• Press enter
• Enter OFFSET in the command and offset distance of 0.5
• Select the rectangle and press enter
• Select Polygon
• Enter number of sides of 4
• Specify center of polygon at 6,6
• Then enter the option circumscribed
• Specify the radius of circle @5<45
• Press enter
• Enter OFFSET in the command and offset distance of 0.5
• Select the rectangle and press enter
• Using trim tool, trim off the lines according to diagram
• Press enter

Result :

Problem 11

Procedure :

• Set units to engineering
• Set precision in dimstyle to engineering
• Draw a rectangle of length 20'4'' and width 13'6" from point 1,1
• Draw a rectangle of length 3' and width 4'6" from point 1,1
• Draw a rectangle of length 3' and width 4'6" from point 20'5",1 towards left side
• Draw a rectangle of length 5'4 and width 1'2" from point 7',7''
• Draw a rectangle of length 3' and width 3' from a distance of 6'9'' from the top with an angle of rotation 45
• Draw a triangle of 45 degree with height and base of 2'8" at a distance of 3' from top left side of diagram
• Using mirror tool, similar triangle is made on other side
• Draw a triangle of 30 degree with height 2'0.82" and base of 3'7" at a distance of 3' from top right side of diagram
• Using mirror tool, similar triangle is made on other side
• Using trim tool, trim off the lines according to diagram
• Using Dimlinear and Dim angular mark the dimensions

Result :