Drafting of various geometries using Chamfer, Fillet tool in AutoCad

  

Drafting of various geomtries using Chamfer, Fillet tool in AutoCAD

 

Aim: To draft the following geometory by setting the unit of measurement as decimal in AutoCAD software.

Itroduction: AutoCAD tools makes drafting easy and quick.  This uncludes both drafting tools are well as madification tools.  These tools include:

- Modifiction tools: Chamfer, Fillet, Offest, Rotate, Object snapping, Trim and extend, Lenght, Mirror, Joimn.

1. Chamfer:

  -Command used: CHAMFER, and is also evoked from ribbon and toolbars.

  - Different option available for chamfer are:

• Creating chamfer using distance option: By just inputing the distnce of chamfer the corner.
• Creating chamfer using select first line option: The line in which we have to provide the first chamfer distance is selected.
• Creating chamferusing polyline option: In this chamferr will be developed at all cornerrs of the polyline.
• Creating chamferusing angle option: Lenght of one side of chamfer and the angle measurement will be provided as input.
• Creating chamfer using trim option.
• Creating chamfer using Method option.
• Creating chamfer using Multiple option.
• Setting the chamfer using System variable's.

2. Fillet:

  - Command used: FILLET. This tool can also be evoked from ribbon and tool bar.

   - Different options available for fillet are:

     Creating fillets using radius option: Here the input provided fill be the radius of the the fillet curve.

     Creating fillets using select first object option.

3. Offset:

  -Command used: OFFSET. It is also evoked from ribbon and toolbar.

  - Different options available are:

  1. Through option: offsetting can be done without providing any offset distance;

  2. Erase option:This provides a choice to erase the source object after offsetting;

  3. Layer option.

4. Rotate:

  - Command used: ROTATE. It is also evoked from ribbon and toolbar.

   - Different options include:

   Rotation of objects in different rotation angles (by choosing basepoint)

   Rotation using REFERENCE option.

  - Copy option will enable the rotated and source image to exist together.

  - Reference option will enable to rotate an object with reference to other.

5. Object snap:

  - Comman used: OS --> Object snap; Shortcut key used: F3.

   - There are various object snap options in the dialogue box which are highlighted will drafting such as endpoint(end), midpoint(mid), center(cen), geometric center(gcen), nearest(nea), quadrant of a circle(quad), intersection, perpendicular, tangent, parallel, extension, apparent intersection, nodes, insertion points.

6. Trim and Extend:

   - Command used: TRIM. It is also evoked from ribbbon and toolbar.

   - Various trim options are fence, crossing, erase, undo, project, edge.

7. Lengthen:

  - Command used: Lengthen. This tool is evoked from ribbon.

  - Different options available are total option (total length that is to be increased is provided), delta option (the increase in length required is provided), percent option( the percentage change in length is provided), dynamic option(length can be varied according to our choice).

8. Mirror:

 - Command used: MIRROR, also evoked from ribbon and toolbar.

 - For mirroring an object we need to provide the first point of mirror line and then second point of mirror line.

Inroder to mirror a text simply MIRROR command would result in just copying the text, so inorder to mirror it first we have to give the command as MIRRTEXT
then provide 1 as input then use the mirror command.

9. Join:

  - Command used: JOIN, also evoked from ribbon

  - Sketching tools : Drawing arc, points, drawing construction line, drawing a ray, drawing a circle.

 

1. Arc:

 - Command used: ARC or A, this tool is also evoked from ribbon, toolbar, menubar.

  - Anticlockwise is considered as positive and clockwise is considered as negative.

  - Different ways of drawing an arc:

• 3 point
• Start, center, end
• Start, center, angle
• Start, center, length
• Start, end, angle
• Start, end, direction
• Start, end, radius
• Center, start, end
• Center, start, angle
• Center, start, length
• Continue tool

2. Points:

  - Command used: POINT/ DPPTYPE( to change the point style). Tool is also evoked from ribbon, menubar, toolbar, tool pallettes.

• Placing multiple points: Command used- POINT
• Placing points at equal distance:Command used - DIV or DIVIDE.
• Placing points at specified intervals: Command used - MEASURE.

3. Drawing construction line: Command used - XLINE.

4. Drawing ray: Command used - RAY

5. Drawing a circle: Command used - CIRCLE or C. Tool is also evoked from ribbon, toolbar, menu bar, tool pallattes.The various options of circle tool are:

• Creating circle by providing center and radius.
• Creating circle by providing two points.
• Creating circle by providing tagent, tangent and radius.
• Creating circle by providing center and diameter.\
• Creating circle by providing three point.
• Creating circle by providing tangent, tangent, tangent.

 

Default Procedure:

• • Click on AutoCAD application and open this application 
  • Initially set the template Imperial ( Feet and inches)and Units(Decimal)
  • Then go to application menu -->select new-->creat drawing, to start form scratc.
  • Select defaultf setting as Imperial (feet and inches)
  • In default setting we used a wizard and in that advancef setting and unit as Decimal, Architectural, or Engineering and precision as 0.00, 0'0" and 0'0.0"
  • Set Angle as Decimal Degree and precision as 0 and click next
  • Set Angle Measure as EAST and Next
  • Set Angle Direction as Counter-Clockwise and click Next
  • Set  Area by provideing required Lenght and Width for each diagram
  • finished

 

Q1.

           

 

Aim: To draft the given figure using AutoCAD tols like circle, line etc. 

Step by Step Procedure:

• In this diagram we used default setting for unit as Decimal and precision as 0.00
• Set Area by providing Lenght as 5 and with 5
• Now Take a line command fro command bar
• Specify first point as 1,1
• Specify first point as @2.12<45
• Specify first point as @2,83135
• Specify first point as @2<180
• Specify first point as 1,1
• Now take circle command from command bar
• Specify first point as 2.50.2
• Specify diameter of circle as 1.20
• Enter
• Again take circle command from command bar
• Specify first point as 2.50,3.50
• Specify diameter of circle as 0.80
• Enter
• Now the figure is completely by dimensioning it.

Result:

          

 

Q2.

          

 

Aim: To creat the given geometry using AutoCAD tool i.e line using polar coordinate system.Step by

Step by ste Procedure:

•  Initially set the units as Architectural.
• Now set the limits for drawing:
• Specify the lowe left corner:(0'0",0'0")
• Specify the lower right corner:(10'0",6'0")
• Now take line command
• Specify the first point as (0'0",5'5")
• Specify the next point as @2'5"<270
• Specify the next point as  @3'0"<300(270+30) the other angle is 60 degrees
• Specify the next point as @2'6"<30 
• Now break the line command 
• Again start form the initial point i.e 0'0",5'5" 
• Specify the first point as 0'0",5'5"
• Specify the next point as @8'0"<0
• Specify the next point as @1'9"<270
• Specify the next point as @2'10"<225
• Specify the next point as C to close 
• Now the figure is completely by dimensioning it.

Result:

          

 

Q3.

          

 

Aim: To creat the given geometry using AutoCAD tools i.e rectangle, circle, chamfer etc.

Step by Step Procedure:

• Initially set the units of the drawing as Engineering.
• Set Area by providing Lenght as10'and with as 5'
• Choose the rectangle command
• Spicify the first corner point (0'0",0'0")
• Specify the nect corner point (5'0".1",3'3")
• Noa select the  Chamfer option 
• The right top corner of the rectangle using chamfer tool
• Specify the chamfer on first line 1'9"(3'3"-1'6")
• Specify the chamfer angle from the firlst line 55(180-125)
• The select the first linet to chamfer.
• Now select cirle command
• Specify the center of the circle (1'3".1'6")
• Specify the diameter of the circle (1'6")
• Now complete the figure by dimensioning it.

 

Result:

          

 

Q4.

           

Aim: To creat the given geometry using the AutoCAD tool, polyline using rectangular coordinate system.

Step by Step Procedure: 

• Initially set the units of the drawing as Decimal.
• Set Area by providing Lenght as10 and with as 9
• Choose the line command 
• Specify the first point (0,0.5)
• Specify the next point @3,0
• Specify the next point @0,-0.5
• Specify the next point @2.5,0
• Specify the next point @0,2.5
• Specify the next point @-2,0
• Specify the next point @0,3
• Specify the next point @-2.5,0
• Specify the next point @0,-2
• Specify the next point @-1,0
• Specify the next point C to close
• Now complete the figure by dimensioning it.

Result:

          

Q5.

          

Aim: To creat the given geometry using AutoCAD tools like rectangle , circle, offset etc.

Step by Step Procedure:

• Initially set the unit of the drawing as Decimal
• Set Area by providing Lenght as 15 and with as 10
• Now choose the rectangle command
• Specify the first corner point (2,2)
• Specify the nect corner point (11.5,6)
• Now choose the line command and draw a line at a distance of 3 unit form left end
• Specify the first point of line as (3,0)
• Specify th next point (3,6)
• Then offset this line at  distance of 5.5 units towares right side.
• Now choose the circle command
• Specify the center of the circle 91.5,30
• Specify th diameter of the circle 2
• After fdrawing the circle, offset this circle inwqrds at a distance of 0.5
• Now copy the circles on the left portion to the rifht portion by keeping fthe center of the circles as the base point
• Then spicify the second point as (10,3)
• Again choose the circle command
• Specify the center point as (5.75,3)
• Specify the diameter of the circel as 3
• complete this figure bu dimensiong it.

Result:

          

Q6.

          

Aim: To creat geometry using command and offset command in AutoCad

Step by Step Procedure:

• Initially set the units of the drawing as Decimal
• The set the limits of the drawing 
• Specify the lowerr left corner 0,0
• Specify the upper right corner (12,12)
• Now choose the line option and draw the geometry
• Specify the first point (0.0)
• Specify the next point (1.5,0)
• Specify the next point (1.5,1.5)
• Specify the next point (0,1.5)
• Specify the next point C to close
• Now offset the bottom line of the rectangle at an offset distance of 0.5 units inwards
• Also offset the side edge of the rectangle at an offset distance of 0.5 units twice inwards.
• Then trim off the part of line that externds into the  bottom portion
• Now again choose the line command
• Specify the first point (2.5,0)
• Specify  the next point (4.5,0)
• Specify the next point ( 4.5,1.5)
• Specify the next point ( 4.1,50
• Specify the next point (4,o.5)
• Specify the next point (2.5,0.5) 
• Specify the next point C to close
• Again cboose line command 
• Specify the first point of the (2.5,0.5)
• Specify the next point( 4,1.5)
• Again choose the line command
• Specify the first point (2.4,2.5)
• Specify the next point (4.5,2.5)
• Specify the next point (4.5,4)
• Specify the next point (2.5,4)
• Specify the next point C to close
• Now offset the right edge of the rectangle at an offset distance of 0.5 units inwards
• Similarly offset the top edge of the rectangle at an offset distance of 0.5 units inwards twice
• Now trim off the portion of the lien that extend into the rifht portion of rectangle
• Complete the figure by dimensionig it.

 

Result:

          

Q7.

            

 

Aim: To creat the geometry using rectangle, circle, arc, fillet etc in AutoCAD

Step by Step Procedure:

• Initially set the units of the drawing as Decimal
• Set Area by providing Lenght as 250 and with as 150
• Now choose the line command from command bar
• Specify the first point of line (0.150)
• Specify the next point of line (210,150)
• Specify the next point of line (210,75)
• Now choose arc command
• Specify the start point of arc (210,75)
• Choose end option in the are command
• Specify the end point of arc(160,75)
• Inorder to switch the direction of arc hold ctrl.
• Specify the radius of the arc 25
• Now again choose line command
• Specify the first point of line (160,75)
• Specify the next point of line(160,90)
• Specify th next point of line (70,90)
• Specify the next point (70,50)
• Now choose arc command
• Specify the start point of arc(70,50)
• Choose end option in the arc command
• Specify the end point of arc(0,50)
• Inorder to switvh the direction of arc hold ctrl.
• Specify the radius of the arc 35
• Now close the figure withj the command C
• Now we have to fillet the corners of the figure using the commadn fillet
• Select the first object to fillet
• Then choose the radius option and specify  the radius as 15 units
• Finally select the second object
• Similarly fillet the other corners of radius 15,6 and 20 units respectively
• Choose the circle command
• Specify the centre of th circle (35,50)
• Specify th radius of the circle 25
• Again choose circel command Specify the center of teh circle (185,75)
• Specify the radius of the circle 15
• Choose rectangle command
• Specify the first corner point (20,110)
• Specify the other fcorner point (90,140)
• Now copy  this rectangle by choosing left bottom corner as base point to the point having coordinates (120,110)
• Now complete the figure by dimensiong it.

Result:

          

Q8.

          

Aim: To creat geometry using circle, line, offset etc in AutoCAD

Step by Step Procedure:

• Initially set the units of teh drawing as Decimal
• The Set Area by providing Lenght as 20 and with as 20
• Make ortho on
• select snap setting only centre, midpoint, endpoint and tangent object snap as on
• Choose line command 
• Specif the first point as @8.55,0 Enter
• Then choose circle command 
• Circle type - centre,diameter
• Due to object snap of centre it will sow the centre of teh circel on line after movingd curser on line curser on line
• Select the midpoint as centre of the circle
• Specify diameter as 5
• Again take circle command
• Move the curser towards the one endpoint
• choose one endpoint as centre of circle 
• Specify diameter as 0.90
• Choose circle command ( Circle type - Centre, radiusa)
• Choose same points as centre of circle
• Specifhy radius of circle as 0.90
• Again take same circle point  
• Specify diameter as 5
• Again Choose circle command 
• Circle type- Centre , Diameter
• Move The curser towards the one endpoint 
• Take other endpoint fas centre of circle 
• Specify diameter as 0.90
• Choose circle command (Circle type- Centre, radius)
• Take same point as centre of circle
• Specify radius of circle as 0,90
• Choose command for polyline
• Make ortho off
• For upper left side
• Move the curser towards the outer circle of 1st endpoint
• Due to pbject snap on it will show tangent symbol wherer this symbol is seen click on than point
• Next click on teh outer circle of the mid of the line where it will shows the tangents symbol
• Same procidure is repeated for the upper right side, lower left side and lower right side
• It will show us below geometory
• Erase the line
• Trim th unwanted circle to obtain respective geometpry
• Now complete the figure by dimensiong it.

Result:

          

Q9.

          

Aim:  To creat th given geometry using circle

Step by Step Procedure:

• Initially set the units of teh drawing as Engineering , Precisio 0'0"
• The Set Area by providing Lenght as 100 and with as 100
• Choose line command
• Specify the first point as (5',5')
• Specify the next point as @32,6" Enter
• Kepp object snap on to located endpoint on line
• Choose circle command ( Centre, Radius)
• Take centre of circle as one endpoint
• Mention radius of circle as 8'
• Again choose sircle command( Centre, Radius)
• Take centre of circle as another endpoint
• Mention radius of circle as 9'
• Choose circle command (tan, tan, rad)
• Select second tangent as by click on top tangent of right circle
• Specify radius as 41,8" Enter
• Choose circle command ( tan, tan, rad)
• Select first tangent as by click on bottom tangent of left circle
• Specify radius as 20'10" Enter
• Trim and erase the unwanted parts to get required geometry
• Now complete the figure by dimensiong it.

Result:

          

Q10.

          

Aim: To creat a geometry using the rectangle, offset, rotate and trim tool in AutoCAD

Step by Step Procedure:

• Initially set the units of teh drawing as Decimal
• The Set Area by providing Lenght as 10 and with as 10
• Now choose rectangle command
• Specify the first corner of rectangle (3,3)
• Specify the other corner of rectangle (8,8)
• The offset this rectangle inwards at an offset distance of 0.3 units
• Now rotate the ntire ffigure with copy option at a rotation angle of 45 degrees
• Now trim off the overlapping fportion
• Hence the figure is completed.

Result:

          

Q11.

          

Aim:  To creat given geomtry using line, rectangle, rotate tool in AutoCAD using relative polar coordinate system

Step by Step Procedure:

• Initially set the units of teh drawing as Architectural
• The Set Area by providing Lenght as 30 and with as 15
• Choose the line command
• Specif the first command(0'0",13'6")
• Specify the next point @9;0"<270
• Specify the next point @3'0"<0
• Specify the next point @4'6"<270
• Specify the next point @4'6"<0
• Specify the next point @1'2"<90
• Specify the next point @2'8"<0
• Now mirror this figure toobtain this excat geometry on the right side.
• Again choose line command to complete th figure
• Specify the first point 20'4",13'6"
• Specify the next point @3'0"<180
• Specify the next point @4'1.67"<240
• Specify the next point @4'1"<120
• Specify the next point @5'8.32"<180
• Specify the next point @3'9.25"<225
• Specify the next point @3'9.25"<135
• Specify the next point C to close
• Now choose the rectangle command
• specify the first corner point (8'8",5'3")
• specify the next corner point (11'8",8'3")
• Now rote this rectangle at a rotation angle of 45 degrees and then complete the figure by dimensioning it.

Result: