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					RoboCAD 2 - LESSON 5A                                                                                                   PAGE 1



      In this lesson you will be using a new feature of the RoboCAD software, called referenced inserts. This feature
      is a very important concept to learn for CAD in general. An insert is an existing drawing that is inserted into
      your current drawing. This is very similar to the merge command, however, there are some major differences
      between the two commands as you will see.
      To demonstrate referenced inserts, you will be creating an assembly drawing of a briefcase handle and
      bracket.
      After completion of this lesson you will know how to :-


      ● ADD A REFERENCED INSERT                            ● CREATE ARCS
      ● DELETE ENTITIES                                    ● USE TEMPORARY SNAPS
      ● MIRROR ENTITIES                                    ● BUILD AN ASSEMBLY DRAWING



      1. Starting the Drawing
      One of the main uses of referenced inserts is to use the geometry in one file as a reference for another. To
      make this clearer, you will be designing a handle for a briefcase, to help you, you will insert the existing
      drawing of the bracket to which the handle must fit. This will ensure that the correct dimensions are used
      for the handle. Before you dive straight in to inserts, you will need to change your drawing scale
      appropriately.



      ACTION:         Select the PLOT SCALE icon                      from the STATUS BAR at the bottom of the screen
      MESSAGE:        Specify the plot scale [1:1] <1:1>
      ACTION:         Type 1:2 and press [ENTER]


      You have now set your plot scale to 1:2 to allow the drawing to fit onto an A4 piece of paper.



      ACTION:         Select the REFERENCED INSERT icon         from the TOOLBAR at the top of the screen
RoboCAD 2 - LESSON 5A                                                                                                                      PAGE 2



      ACTION:         from the INSERT dialogue box, select the drawing file "bracket.asz", followed by the OK botton


      You will see that an insert parameters dialogue box is displayed and that a dragged display of the bracket
      drawing is visible. If you move your mouse around, the drawing file will follow your cursor.


      MESSAGE:        Specify the insertion point
      ACTION:         Type 0 [SPACE] 0 and press [ENTER], followed by [ESC] to break from the command.


      You should now have a drawing of the bracket inserted into your drawing. Be sure to understand that this is
      not the bracket drawing file but a new drawing with the geometry from the bracket drawing file inside. To prove
      this, look at the title bar and see that the file is [UNTITLED]. You will be creating a drawing of the handle, so
      you will need to save the drawing accordingly.


      ACTION:         From the FILE pull-down menu, select the SAVE AS command
      ACTION:         Give this drawing the name "handle.asz"



      2. Creating the Handle
      Now that you have given the drawing a name you are ready to start creating the geometry to form the handle.



      ACTION:         Select the RESCALE icon           from the VIEW PALLET at the right of the screen


      ACTION:         Select the PARALLEL CONSTRUCTION icon                 from the CREATE PALLET at the right of the screen
      MESSAGE:        Pick the line
      ACTION:         Select the line A as shown in figure 1 in the reference column
      MESSAGE:        Specify the distance
      ACTION:         Type 1 and press [ENTER], followed by selecting the option which is displayed on the left
                                                                                                                                Figure 1
RoboCAD 2 - LESSON 5A                                                                                                                               PAGE 3



      MESSAGE:       Pick the line
      ACTION:        Select the line B as shown in figure 1 in the reference column
      MESSAGE:       Specify the distance
      ACTION:        Type 1 and press [ENTER], followed by selecting the option which is displayed on the right
      MESSAGE:       Pick the line
      ACTION:        Select the line C as shown in figure 1 in the reference column
      MESSAGE:       Specify the distance
      ACTION:        Type 65 and press [ENTER], followed by selecting the option which is displayed on the top
      MESSAGE:       Pick the line
      ACTION:        Select the line C                                                                                                   Figure 1
      MESSAGE:       Specify the distance
      ACTION:        Type 11 and press [ENTER], then select the option which is displayed on the top and press [ESC] to break from the
                     command.


      You have now created a frame for the handle and will now need to trace around this to create the actual
      geometry.



      ACTION:        Select the TRACE icon          from the CREATE PALLET at the right of the screen
      MESSAGE:       Specify the start point
      ACTION:        Specify point D as shown in figure 2 in the reference column
      MESSAGE:       Specify the next point
      ACTION:        Specify point E
      MESSAGE:       Specify the next point
      ACTION:        Specify point F
      MESSAGE:       Specify the next point

                                                                                                                                         Figure 2
RoboCAD 2 - LESSON 5A                                                                                                                                        PAGE 4



      ACTION:         Specify point G and press [ENTER] followed by [ESC] to break from the command.


      You will now use the parallel lines command to create a profile to make up the handle.



      ACTION:         Select the DELETE CONSTRUCTIONS icon                    from the TOOLBAR at the top of the screen


      ACTION:         Select the REGENERATE               icon from the VIEW PALLET at the right of the screen


      ACTION:         Select the PARALLEL LINES icon              from the CREATE PALLET at the right of the screen
      MESSAGE:        Pick the entities to offset
      ACTION:         Turn off profiles 2 to 4 as you will only be requiring one profile to be created. Set the offset distance of profile 1 to
                      15.
      ACTION:         Select the three trace lines you have just created and press [ENTER]
      MESSAGE:        Specify the point
      ACTION:         Click a point inside the profile that you selected for the operation and press [ESC] to break from the command.


      You will now need to zoom your display to create the detail of the handle.



      ACTION:         Select the ZOOM-IN icon            from the VIEW PALLET at the right of the screen
      MESSAGE:        Locate zoom centre or zoom rectangle
      ACTION:         Drag a window from P1 to P2 as shown in figure 3 in the reference column and press [ESC] to break from the
                      command.



      ACTION:         Select the LINE icon          from the CREATE PALLET at the right of the screen
                                                                                                                                                  Figure 3
RoboCAD 2 - LESSON 5A                                                                                                                                   PAGE 5



      MESSAGE:        Specify the point
      ACTION:         Specify point H as shown in figure 4 in the reference column
      MESSAGE:        Specify point
      ACTION:         Making sure your angle snap is turned OFF, specify point I and press [ENTER]
      MESSAGE:        Specify the point
      ACTION:         Specify point J
      MESSAGE:        Specify the point
      ACTION:         Specify point K
      MESSAGE:        Specify the point
      ACTION:         Turn your angle snap ON and drag your cursor so that the line is inside the profile of the handle and press the left   Figure 4
                      button on the mouse, followed by [ENTER]
      MESSAGE:        Specify the point
      ACTION:         Do the same again but this time starting from point J
      ACTION:         Save your drawing


      Now that you have used the reference points from the drawing of the bracket, it is no longer needed. You will
      delete the bracket from the current drawing. Referenced inserts are single entities once they have been
      inserted, so you can select any part of the insert and the entire bracket will be selected.



      ACTION:         Select the DELETE icon          from the TOOLBAR at the top of the screen
      MESSAGE:        Pick the entities
      ACTION:         Select the bracket and press [ENTER]


      ACTION:         Select the AUTOTRIM icon           from the TOOLBAR at the top of the screen
      MESSAGE:        Pick entity
      ACTION:         Pick the sections of the two lines that are inside the handle profile and press [ESC] to break from the command.
RoboCAD 2 - LESSON 5A                                                                                                                                        PAGE 6




      ACTION:            Select the RESCALE icon            from the VIEW PALLET at the right of the screen


      ACTION:            Select the CONSTRUCTION LINE icon                from the CREATE PALLET at the right of the screen
      MESSAGE:           Specify point


      ACTION:            Select the TEMPORARY SNAP icon                       from the from the AUXILIARY OPTIONS AREA at the right of

                         the screen, followed by the MIDPOINT icon            from the TEMPORARY SNAPS pallet
      MESSAGE:           Pick the entity
      ACTION:            Select one of the horizontal lines that make the top part of the handle
      MESSAGE:           Specify the direction
      ACTION:            Making sure the angle snap is turned ON, drag the direction line until it is vertical and press the left button on the
                         mouse. Press [ESC] to break from the command.
      ACTION:            From the EDIT pull-down menu, select the MIRROR command
      MESSAGE:           Pick the entities
      ACTION:            Pick the lines marked L to O as shown in figure 5 in the reference column and press [ENTER]
      MESSAGE:           Specify the mirror line
      ACTION:            Select the construction line that you have just created


      You are now ready to finish the drawing of the handle.                                                                                      Figure 5




      ACTION:            Select the DELETE icon           from the TOOLBAR at the top of the screen
      MESSAGE:           Pick the entities
      ACTION:            Select the construction line and press [ENTER] followed by [ESC] to break from the command.
RoboCAD 2 - LESSON 5A                                                                                                              PAGE 7




      ACTION:        Select the RESCALE icon          from the VIEW PALLET at the right of the screen
      ACTION:        Save your drawing.



      3. Building the Assembly
      You have now got two separate drawings, one of the bracket and one of the handle. You will now start a new
      drawing and insert both the handle and the bracket into the empty drawing file.



      ACTION:        Select the REFERENCED INSERT icon              from the TOOLBAR at the top of the screen
      ACTION:        Select the Drawing file "bracket.asz" followed by the OK button
      MESSAGE:       Specify insertion point
      ACTION:        Type 0 [SPACE] 0 and press [ENTER] followed by [ESC] to break from the command.


      ACTION:        Select the REFERENCED INSERT icon              from the TOOLBAR at the top of the screen
      ACTION:        Select the Drawing file "handle.asz" followed by the OK button
      MESSAGE:       Specify insertion point
      ACTION:        Type 0 [SPACE] 0 and press [ENTER] followed by [ESC] to break from the command.


      You can see that you now have the bracket and the handle together on your drawing sheet. As you designed
      the handle around the bracket, they fit together perfectly. This is the best way of creating assemblies of
      separate components. You will now add your title block in the normal way.



      ACTION:        Select the MERGE icon        from the TOOLBAR at the top of the screen and select your personal title block
                     from the MERGE dialogue followed by the OK button
RoboCAD 2 - LESSON 5A                                                                                                                            PAGE 8




      ACTION:         Select the EDIT TEXT icon            from the TOOLBAR at the top of the screen
      ACTION:         Edit the text on the title block appropriately
      ACTION:         From the FILE pull-dwon menu, select the SAVE AS command and save your drawing with the name
                      "assemby.asz"
      ACTION:         Print your drawing



      4. Changing the Design
      Often in the design process, the original design is not always the final design. If changes are required to one of
      the components in an assembly, using this method of assembly drawing saves time. You will now make some
      very big changes to the design of the handle and see what happens.



      ACTION:         Select the OPEN icon           from the TOOLBAR at the top of the screen
      ACTION:         Select the drawing file "handle.asz" followed by the OK button


      You now have the drawing of the handle you created earlier. Changes to the design of the handle will be made
      directly to the original drawing.



      ACTION:         Select the DELETE icon            from the TOOLBAR at the top of the screen
      MESSAGE:        Pick the entities
      ACTION:         Select the eight lines that make up the handle as shown in figure 6 in the reference column and press [ENTER]
                      followed by [ESC] to break from the command.


      ACTION:         Select the LINE icon          from the CREATE PALLET at the right of the screen
      MESSAGE:        Specify the point                                                                                               Figure 6
RoboCAD 2 - LESSON 5A                                                                                                                               PAGE 9


      ACTION:         Specify point P as shown in figure 7 in the reference column
      MESSAGE:        Specify the point
      ACTION:         Making sure that the angle snap is ON, drag your cursor vertically downwards, type 7.5 and press [F10] to shift
                      your start point down
      MESSAGE:        Specify the point
      ACTION:         Drag your cursor upwards and type 20 and this time press [ENTER] to draw a line followed by [ENTER] again to end
                      the line but not break out of the command
      MESSAGE:        Specify the point
      ACTION:         Repeat this process on the second spindle in the drawing


      ACTION:         Select the ARC (2 endpoints - radius) icon        from the CREATE PALLET at the right of the screen                Figure 7
      MESSAGE:        Specify the point
      ACTION:         Specify point Q in figure 8 in the reference column
      MESSAGE:        Specify the point
      ACTION:         Specify point R
      MESSAGE:        Specify the radius
      ACTION:         Type 130 and press [ENTER]


      You will see that four arcs are possible with the end points and radius which you specified, you will need to
      pick the correct solution

                                                                                                                                         Figure 8
      MESSAGE:        Select one entity or specify if multiple
      ACTION:         Select the arc shown as S in figure 8 in the reference column
      MESSAGE:        Specify the point
      ACTION:         Specify point T
      MESSAGE:        Specify the point
      ACTION:         Specify point U
      MESSAGE:        Specify the radius
RoboCAD 2 - LESSON 5A                                                                                                             PAGE 10



      ACTION:         Type 130 and press [ENTER]
      MESSAGE:        Select one entity or specify if multiple
      ACTION:         Select the arc shown as V in figure 8 in the reference column
      ACTION:         Save your drawing


      You have now made some major changes to the design of the handle, you will now need to update the
      assembly drawing to reflect the changes you have made.



      ACTION:         Select the OPEN icon         from the TOOLBAR at the top of the screen
                                                                                                                       Figure 8
      ACTION:         Select the drawing file "handle.asz" followed by the OK button


      You have now opened the assembly drawing, and you can see that the assembly drawing has already
      changed to reflect the changes you made. There is no more work to be done, how can this be? When you use
      a referenced insert, the geometry of the insert, ie. The lines, arcs, etc.., are not actually saved within the
      drawing file. The pathname of the insert drawing file is saved along with the insertion point, this means that
      whenever you open a drawing containing a referenced insert, it reads the geometry from the file to which the
      insert relates. So when you opened the assembly drawing, the geometry was read from handle.asz and
      bracket.asz, as handle.asz was changed, these changes are shown in the assembly drawing, clever eh?


      Now to finish this lesson…


      ACTION:         Print your drawing

				
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