Drafting of various geometries using Chamfer, Fillet tool in AutoCad

Aim:

To create various geometries using “Chamfer” and “Fillet” tool in AutoCAD

Default settings.

• Open AutoCAD
• Open new drawing
• Set units (measurements as engineering , angle as decimal degree)
• Enable Ortho mode on

Object snap settings

• Type “OS” in command box
• In drafting settings box open object snap and switch on all the necessary options
• Click ok

Problem 1

Procedure:

Step 1

• Set unit to decimal and precision to 0.0
• Start with line tool by entering “L” in command box
• Specify the first point 1,1
• Next point @3,0
• Next point @2.12<45
• Next point @2.08<135
• Next point @-2,0
• Then enter close to complete the box

Step 2

• Use offset tool
• Type “off” in command box
• Give a distance of 1 unit
• Using cursor Click on bottom line and move the cursor top and click enter
• Repeat the same step with a distance of 2.5 units also
• Select line tool
• From the centre of bottom line start a line and move to top like it bisects the two offset lines

Step 3

• Select circle tool (centre and radius)
• Using cursor click at the first intersection and give a radius of 0.6
• Using cursor click at the second intersection and give a radius of 0.4

Step 4

• Finally delete the unwanted lines
• Give dimensions by using dimension tool from tool box

Result

Problem 2

Procedure:

Step 1

• Set unit to engineering and precision to 0’-0.0”
• Enter command dimstyle and click on modify
• Set unit to engineering and precision to 0’-0.0”

Step 2

• Select line tool and specify the first point at 1,1
• Specify the next point 8’ by moving cursor right side
• Specify the next point 1’-9” by moving cursor downward
• Specify the next point @2’-10”<-135
• Press enter

Step 3

• Select line tool and specify the first point at 1,1
• Specify the next point 2’-5” by moving cursor downward
• Specify the next point @3’<-60
• Specify the next point @2’-6”<30
• Then join the two ends and press enter
• By using dimension tool give all necessary dimensions

Result

Problem 3

Procedure:

Step 1

• Select line tool and specify the first point at 5,5
• Specify the next point 2’-6.5” by moving cursor left side
• Specify the next point 3’-3” by moving cursor downwards
• Specify the next point 5’-0.1” by moving cursor right side
• Specify the next point 1’-6” by moving cursor upwards
• Then enter close to complete the circuit

Step 2

• Use offset tool
• Type “off” in command box
• Give a distance of 1’6”
• Using cursor Click on bottom line and move the cursor top and click enter
• Type “off” in command box
• Give a distance of 1’3”
• Using cursor Click on left most line and move the cursor right side and click enter

Step 3

• Select circle tool (centre and dia)
• Using cursor click at the first intersection and give a dia of 1’-6”
• Finally delete the unwanted lines
• Give dimensions by using dimension tool from tool box

Result

Problem 4

Procedure:

Step 1

• Set unit to decimal and precision to 0.0
• Select line tool by using “L” in command box
• Select line tool and specify the first point at 1,1
• Specify the next point 0.5 by moving the cursor upward
• Specify the next point 3 by moving the cursor leftside
• Specify the next point 3 by moving the cursor upward
• Specify the next point 1 by moving the cursor right side
• Specify the next point 2 by moving the cursor upward
• Specify the next point 2.5 by moving the cursor right side
• Specify the next point 3 by moving the cursor downwards
• Specify the next point 2 by moving the cursor right side
• Specify the next point 2.5 by moving the cursor downwards
• Specify the next point 2.5 by moving the cursor left side
• Press enter to close the circuit
• Give dimensions by using dimension tool from tool box

Result

Problem 5

Procedure:

Step 1

• Select line tool by using “L” in command box
• Select line tool and specify the first point at 1,1
• Specify the next point @11.5,0
• Specify the next point @0,6
• Specify the next point @-11.5,0
• Enter close to complete the circuit

Step 2

• Use offset tool
• Type “off” in command box
• Give a distance of 3 unit
• Using cursor Click on leftmost line and move the cursor right and click enter
• Using cursor Click on rightmost line and move the cursor left and click enter

Step 3

• Use offset tool
• Type “off” in command box
• Give a distance of 1.5 unit
• Using cursor Click on leftmost line and move the cursor right and click enter
• Using cursor Click on rightmost line and move the cursor left and click enter
• Type “off” in command box
• Give a distance of 3 unit
• Using cursor Click on bottom line and move the cursor up and click enter
• Select line tool
• Start the line from midpoint of bottom line and end at mid point of top line

Step 4

• Select circle tool (centre and radius)
• Using cursor click at the first intersection and give a radius of 0.5
• Using cursor click at the first intersection and give a radius of 1
• Repeat the same for final intersection also
• Select circle tool (centre and radius)
• Using cursor click at the mid intersection and give a radius of 1.5
• Click enter

Step 5

• Finally delete the unwanted lines
• Give dimensions by using dimension tool from tool box

Result

Problem 6

Procedure:

Step 1

• Select x-line tool by using “xl” in command box
• Select horizontal and click on screen to draw horizontal line
• Select vertical and click on screen to draw vertical line

Step 2

• Use offset tool
• Type “off” in command box
• Give a distance of 0.5 unit
• Using cursor Click on vertical line and move the cursor left and click enter
• Using cursor Click on horizontal line and move the cursor up and click enter
• Type “off” in command box
• Give a distance of 2 unit
• Using cursor Click on vertical line and move the cursor left and click enter
• Type “off” in command box
• Give a distance of 1.5 unit
• Using cursor Click on horizontal line and move the cursor up and click enter
• Type “off” in command box
• Give a distance of 3 unit
• Using cursor Click on horizontal line and move the cursor up and click enter
• Using cursor Click on vertical line and move the cursor left and click enter

Step 4

• Now using trim tool delete the all unwanted lines

Step 5

• Type “off” in command box
• Give a distance of 0.5 unit
• Now draw lines for top and left rectangles as shown
• Press esc
• Now trim the top lines of the middle rectangle
• Using line tool draw a line connecting the two corners
• Give dimensions by using dimension tool from tool box

Result

Problem 7

Procedure:

Step 1

• Select line tool by using “L” in command box
• Select line tool and specify the first point at 30,30
• Specify the next point @0,100
• Specify the next point @210,0
• Specify the next point @0,-75
• Press esc

Step 2

• Use offset tool
• Type “off” in command box
• Give a distance of 10 unit
• Using cursor Click on top line and move the cursor down and click enter
• Give a distance of 30 unit
• Using cursor Click on offset line and move the cursor down and click enter
• Give a distance of 20 unit
• Using cursor Click on offset line and move the cursor down and click enter
• Using cursor Click on left line and move the cursor rightside and click enter
• Using cursor Click on right line and move the cursor leftside and click enter
• Give a distance of 70 unit
• Using cursor Click on left line and move the cursor rightside and click enter
• Using cursor Click on right line and move the cursor leftside and click enter
• Now using trim command delete the unwanted lines

Step 3

• Now select point tool and place a point 25 units left from the bottom of rightmost line
• place a point 35 units right from the bottom of lefttmost line

Step 4

• Select circle tool (centre and radius)
• Using cursor click at the right point and give a radius of 35
• Using cursor click at the right point and give a radius of 25
• Using cursor click at the left point and give a radius of 25
• Using cursor click at the left point and give a radius of 15

Step 5

• Use fillet tool
• Type “fillet” in command box
• Select angle and give a radius of 15
• Select topline and left line
• And Select topline and right line
• Type “fillet” in command box
• Select angle and give a radius of 20
• Select bottom line and outer circle
• Type “fillet” in command box
• Select angle and give a radius of 6
• Select bottom line and outer circle
• Press esc
• Give dimensions by using dimension tool from tool box

Result

Problem 8

Procedure:

Step 1

• Select circle tool (centre and radius)
• Using cursor click at a point and give a radius of 2
• Using cursor click at the same point and give a radius of 2.5

Step 2

• Now select point tool and place a point 4.275 units left and right from the centre of the circle

Step 3

• Select circle tool (centre and radius)
• Using cursor click at the right point and give a radius of 0.45
• Using cursor click at the same right point and give a radius of 0.9
• Do the same procedure for left point also

Step 4

• Select line tool
• Press the right click of the mouse by holding shift key
• Select tangent option from the box
• Select the two circles and press enter
• Repeat the same procedure for all the tangents

Step 5

• Trim the unwanted lines
• Give dimensions by using dimension tool from tool box

Result

Problem 9

Procedure:

Step 1

• Set unit to engineering and precision to 0’-0.0”
• Enter command dimstyle and click on modify
• Set unit to engineering and precision to 0’-0.0”

Step 2

• Draw a circle 1 of radius 8’ from point 1,1
• Draw a circle 2 of radius 9’ from point 32’6” from the centre of c1
• Draw a circle of (tangent, tangent, radius) radius of 41’8” by selecting c1 and c2
• Draw a circle of (tangent, tangent, radius) radius of 20’10” by selecting c1 and c2

Step 3

• Trim the unwanted lines using trim tool
• Give dimensions by using dimension tool from tool box

Result

Problem 10

Procedure:

Step 1

• Select rectangle tool from tool box
• Give dimension as 20’ and 20’
• Press enter
• Select offset tool
• Give a offset of 10”
• And make inside offset of rectangle

Step 2

• Now select copy tool
• Select the entire rectangle and make other copy
• Press enter
• Now select rotate tool
• Select the copied rectangle and rotate it 45 degree
• Now select move tool
• Select at mid point of rotated rectangle
• And move it to the centre of rectangle 1 using cursor
• Press enter

Step 3

• Select trim tool
• Trim the places as shown in the fig

Result

Problem 11

Procedure:

Step 1

• Set unit to engineering and precision to 0’-0.0”
• Enter command dimstyle and click on modify
• Set unit to engineering and precision to 0’-0.0”

Step 2

• Select rectangle tool
• Draw a rectangle of length 20’4” and width as 9’ from 1,1
• Select line tool
• Start point at 3’ from bottom left corner of rectangle
• Next point @0,4’6”
• Next point @4’6”,0
• Next point @0,-1’2”
• Next point @5’6”,0
• Next point @0,1’2”
• Next point @4’6”,0
• Next point @0,-4’6”
• Press enter
• Not trim the unwanted lines

Step 3

• Now select rectangle tool
• Use dimensions
• Give length and width as 3’
• Now select rotate tool
• Select the rectangle and rotate it 45 degree
• Now select move tool
• Select at mid point of rotated rectangle
• And move it to the 6’9” bottom to the cenere of main rectangle using cursor

Step 4

• Now draw a triangle of height 2’8” and angle of 90degree
• And draw a other rectangle of height 3’7” and angle of 60degree
• Use move tool to place the triangles at required places as shown in fig
• Now use trim tool to remove the lines at required places
• Give dimensions by using dimension tool from tool box

Result