ProDesktop 3D Modelling

Cassette Rack

 

In this exercise you will:

 

   

Create a valid profile for the end
  • Select the Lateral plane

  • add a new sketch naming it Profile

  • view onto the Profile sketch (Shift + w)
  • select the Straight line tool

  • draw a vertical line

  • select the line using the Select Line tool

  • from the Constraints menu select toggle fixed

  • select the Sketch Dimension tool

  • add a constraint to the length of the line

  • select the Select constraint tool

  • set the constraint for the length of the line to 100

  • select the Straight line tool

  • attach an inclined line to the top of the 100 line

  • constrain the length of the inclined line to 70

  • constrain the angle between the lines to 135 degrees

NOTE Toggle fixed prevents the part from moving when other objects are attached to it.

 

 

  • draw a line inclined down to the left from the top of the 70 line

  • constrain the length of the new line to 110

  • select both inclined lines

  • from the constraints menu select Perpendicular

 

 

  • draw a vertical line down from the end of the 110 line

  • draw a horizontal line towards the left from the bottom of the 100 line

  • use the Delete Line Segments tool to trim any overhanging lines

 

 

  • select the Straight line tool

  • move to the coincident point of the 70 and 100 lines (where the two lines cross)

  • draw a line down to the left at approximately 45 degrees

  • from the Line menu select toggle construction

  • select the new construction line and the 110 line

  • from the Constraints menu select Parallel

NOTE Toggle construction changes drawing objects to construction lines. Construction lines are ignored when a profile is being created.

TO

 

  • select the line tool

  • move to the bottom of the 110 line

  • draw a line down to the right at approximately 45 degrees

  • from the Line menu select toggle construction

  • select the new construction line and the 70 line

  • from the Constraints menu select Parallel

 

 

  • select the Circle tool and draw three circles approximately as shown
 

 

  • use the Line Select tool to select a circle and the adjacent construction line

  • from the Constraints menu select Tangent

  • repeat this operation to make all three circles tangent to the construction lines

 

 

  • use the Sketch Dimension tool to apply a constraint to a circle

  • select the Constraints tool to set the diameter to 12

  • repeat this for each circle

 

Extrude the profile

 

  • from the Features menu select Extrude

  • extrude the profile a distance of 12

 


 

  • select the two vertical and two inclined edges
 

 

  • from the Features menu select Chamfer

  • set the distance of chamfer to 6

  • from the File menu select Save

  • save the design giving it the name RIGHTEND

  • from the File menu select Save Copy As

  • give the copy the name LEFTEND

 

Create second end

  • Open the file LEFTEND

  • rotate the end similar to that shown

  • select the bottom surface

  • from the Features menu select Modify Solids then Mirror Solids

 

 

  • untick the Keep original solids box
 


 

  • from the File menu select Save
 

Create Dowel

  • open a new design

  • on the initial sketch draw a circle

  • constrain the circle to a diameter of 12

 


 

  • extrude a dowel 300 long

  • from the File menu select Save

  • name the design Dowel

 

Assemble Parts

  • open a new design

  • from the Assemble menu select Add Component

  • locate and select the RIGHTEND in the list of files

  • use the Select Parts tool to select the RIGHTEND

  • from the Constraints menu select Toggle Fixed

NOTE Toggle Fixed prevents this part from moving when other parts are added to the design and constrained in relation to it.

 


 

  • from the Assemble menu select Add Component

  • locate and select the LEFTEND in the list of files

 

 

  • from the Assemble menu select Add Component

  • locate and select the DOWEL in the list of files

 

 

  • select the Select Parts tool

  • select the dowel

  • from the Edit menu select Duplicate

    • select the Rectangular tab
    • set Number to 3
    • select Spacing to 20

  • click OK to duplicate the dowel

 

 

  • select the Select Faces tool

  • select the surface of one dowel and the inside surface of a hole as shown

  • from the Assemble menu select Centre Axes

 

 

 

  • centre the axes of all dowels
 

 

  • select the end face of one dowel and the face of the right end

  • from the Assemble menu select Align

 

 

  • repeat the alignment process for each dowel
 

 

  • select the surface of the middle dowel and

  • the inside surface of the middle hole in the left end

  • from the Assemble menu select Centre Axes

 

 

  • rotate the design using the arrow keys

  • select the end of the middle dowel and the outside surface of the end

NOTE

  • The outside surface is the surface which is chamfered.
  • The outside surface of the end may not be facing outwards.

 

 

  • From the Assemble menu select Align
 

select the outside of another dowel and

  • the inside of the matching hole

  • from the Assemble menu select Centre Axes

 

The complete assembly!
 
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Copyright © Dubbo College 2003 - Bryan Jeffress HTTL

Last updated July 2004