EM 104 Graphical Communication

Week 6- Auxiliary Views and Section Views

 

 

Lecture Topics

1.   Auxiliary Views

2.   Section Views

3.   Introduction to dimensioning in Mechanical Desktop

 

Hints:

·        In CW 6.2, the hole has a diameter of 2 units.  The hole is centered on the inclined plane.  Find the center of the plane by drawing a construction line from corner to corner and create a work point at the midpoint of the line.  When you create the hole as a placed feature, placement = on point.

·        We will be using dimensioning during the second half of EM104.  This week we let Mechanical Desktop suggest the dimensions and we move them around as needed.

 

*****************************************************************

 

Classwork 6.1 – Using the solid model you created in Classwork 4.1 (the base), create a drawing of the front view of the object and two section views in place of the profile and horizontal views.  You will need to use a scale factor of 0.5 for the views.  The front view should be the right front side of the isometric view in Handout CW4.1 (with the 0.375 – 16 UNC hole that is not counterbored).  The horizontal section view should cut through the center of the counterbored hole on the left-front of the view in the handout.  The vertical section view should cut through the center of the hole in the front view (note that this is not the center of the front view).  Place a title block around the drawing and complete the appropriate text information.  Plot and turn in a hard copy of the drawing.

 

Classwork 6.2 – Create a solid model of the object shown in Figure 11.19 #7 on p. 554 of TGC (Figure 6.98 #7 on p. 372 of FGC).  Then make a drawing of the three principal views of this object and an auxiliary view of the inclined plane (hint:  the hole is round and is located in the center of the inclined plane).  Place a title block around the drawing and complete the appropriate text information.  Plot and turn in a hard copy of the drawing.

 

Classwork 6.3 – Open the model you created in CW 6.2 and re-save it as CW6_3.dwg.  Completely dimension the drawing of the three principal views of this object.  It should require 5 dimensions and a hole note.  The hole note will describe the diameter and location of the hole.  Realign the dimensions so that they are easy to read and do not overlap the part.  Plot and turn in a hard copy of the dimensioned drawing.

 

Homework 6.1 – Load the file HW6_1A.dwg from the network.  Create a drawing of the three principal views and an auxiliary view of the inclined surface.  Place a completed title block on the drawing.  Plot a hard copy of the drawing and color code the surfaces so that the same surfaces appear in the same color in the horizontal, auxiliary and profile views (you should need four colors).  Turn in this hard copy.

 

Homework 6.2 – Load the model you created in CW 4.2 (from Handout CW4.2) and save it as HW6_2.dwg.  Create a drawing of the three principal views of this object and add the appropriate auxiliary view to see the plane ABC in its true size and shape.  Use a scale of 0.8 for the four views on the drawing.  Place a completed title block on the drawing.  Plot a hard copy of the drawing and color code the surfaces so that the same surfaces appear in the same color in the horizontal, auxiliary and profile views.  Turn in this hard copy.

 

Homework 6.3 – Create a solid model of the object shown in Figure 9.75 #63 on p. 514 of TGC (not in FGC – also included as Handout HW6.3).  The 3 fillets visible in the front view have a radius of 0.15.  Make a drawing of 3 views of this object such that the front view is the view that appears in the profile in Figure 9.75, and the horizontal view therefore appears rotated by 90° as compared to the figure.  The profile view should be a section through the center of the front view.  Place a completed titleblock around the drawing and submit electronically.

 

Homework 6.4 – Read section 15.1 - 15.4 pages 682 - 705 TGC. (section 9.1 through 9.4,  pages 477 -500 FGC).