CAD ApplicationsAssignment #6INQUIRY COMMANDSObjective:The student will construct a complete drawing of an assigned problem using the inquiry commands.Assignment:The student will generate a drawing of a cam profile and a cam displacement diagram using the given cam specifications.1. The base circle is to be 3" diameter.2. The hole diameter is to be 1" with a 1/4" x 1/8" keyway.3. The cam motion is uniform with a rise of 1-1/2" in 120 degrees with a dwell of 60 degrees.Set the drawing parameters, layers, colors, and linetypes as needed.One layer will be set up as a construction layer. This layer will show all the necessary construction and projection lines used to complete the finished drawing. This layer will not be plotted but must be included on the CAD Drawing Document Sheet.¨ Plot the drawing on size “A” drawing paper.Constructing the Drawing:¨ Define a construction layer and construct the base circle.¨ Draw a 1-1/2" line from the center of the base circle to the circumference.¨ Array the line around the base circle at 30-degree intervals.¨ Use the AREA command or the LIST to find the circumference and the area of the base circle. Record the area and circumference below.AREA: ____________________CIRCUMFERENCE: ____________________ ¨ Once the circumference is known, begin construction of the cam displacement diagram. Draw a line with a length equal to the circumference. Use RELATIVE coordinates or Direct Distance entry. ¨ Set the point marker (PDMODE) to a value of 3. This is done by typing in PDMODE at the command prompt and setting the value to 3.¨ Divide the cam displacement line into 12 parts using the DIVIDE command. Notice the point marks on the line indicating each division.¨ Set the OSNAP mode to NODE and turn the ORTHO mode to ON. Draw a vertical line 1-1/2" long at each point mark. You can draw one line and use the COPY command to place the remaining lines. These lines represent the displacement distance of the cam. Finish the displacement diagram by closing off the top of the diagram with a line.CAD ApplicationsAssignment #6¨ The point marks should not be plotted. To get rid of them simply enter the PDMODE command and set the PDMODE to 0. Construct the graph of the CAM motion on the cam displacement diagram.¨ Add text below each interval indicating the degrees of each interval. Use 1/8" high letters. Label the first line 0 degrees, the next 30 degrees, the next 60 degrees and so on until the end which should be 360 degrees. Use the CONTROL CODE %%d to place the degree symbol next to each number.¨ Add the titles for the CAM DISPLACEMENT DIAGRAM and the CAM PROFILE under the each figure using 1/4" letters. ¨ Set the OSNAP mode to INTERSECT and measure the vertical distance of each interval under the graph using the DIST (distance) command. Record this distance below:0° ___________ 210° __________30° ___________ 240° __________60° __________ 270° __________90° __________ 300° __________120° __________ 330° __________150° __________ 360° __________180° __________¨ Transfer the distances to the cam profile using OFFSET circles. After all distances are transferred you will begin to see the profile of the cam taking shape.¨ Set the OSNAP mode to END or INTERSECT depending upon the construction technique used. Use the PLINEto connect the ends of each of the profile lines. Be sure to use the CLOSE option to complete the PLINE cam profile. Do not assign a width to the PLINE.¨ At the command prompt type in PEDIT and when prompted select the PLINE just drawn. Select the FIT option when prompted. The result is that the sharp edges of the PLINE cam profile will be rounded to give the true shape of the cam¨ The finished CAM drawing¨ Show the cam displacement diagram with all the dimensional information.¨ Show the cam profile complete with centerline.¨ The original base circle will be shown as a centerline. Use the CHANGE command.¨ Position the figures on the drawing paper using the MOVE command.Evaluation: You should have one plot and one CAD Drawing Document Sheet for this Assignment. ¨ Refer to the PROJECT EVALUATION handout for the required items to be turned in for evaluation.2CAD ApplicationsAssignment #6Special Instructions:¨ Plot the drawing with different line weights by assigning a line weight to a layer. Assign a line weight of 0.020 for object lines, a line weight of 0.012 for hidden lines, and a line weight of 0.010 (default) to all other lines.¨ Use the correct linetype assignments for each line type (i.e. CENTER2, HIDDEN2). Standard drafting practice requires centerlines to extend 1/4" past the feature, not the entire object. Include all centerlines for complete circles only and the complete ellipse. Construct the given problem. Use the Offset, Mirror, Copy, Move, Chamfer, Fillet, Array, Change, Pan, and Zoomcommands to your best advantage. Extend, Trim, and Grips can also be used.Vocabulary:ARRAY AREA PDMODE DIVIDE ORTHO OSNAP DIST (distance) PLINE PEDIT TEXT LIST STATUSTIME MEASURE DDPTYPE PROPERTIESPOINT GEOMETRY: Absolute Coordinates Relative Coordinates, Polar CoordinatesCommand Icon Menu Browser Ribbon ResultDDPTYPE Home tabUtilities panel Point StyleShows the current point style and sizePDMODE Controls how point objects are displayed.DIVIDE Home tab Draw panel Point drop-down DivideCreates evenly spaced point objectsor blocks along the length or perimeter of an object.DIST Measures the distance and angle between two points.PLINEHome tab Draw panel PolylineCreates a 2D polyline.PEDITHome tab Modify panel Edit PolylineEdits polylines and 3D polygon