DRAWBAR

The drawbar menu provides functions to generate drawbars on the die surface.  There are three types of drawbars available:

 

1.        DRAW BAR ENDS WITH A SPHERICAL SHAPE (TEAR DROP HEAD). Figure 6.5.10 shows the control parameters in the dialog box.

Figure 6.5.10  Parameters for Tear Drop Head

2.        DRAW BAR ENDS WITH A CONICAL SHAPE (TEAR DROP TAIL). Figure 6.5.11 shows the parameters in the dialog box.

Figure 6.5.11 Parameters for Tear Drop

 

3.        TEAR DROP (DRAW BAR WITHOUT MAIN BODY).  Figure 6.5.12 shows the parameters in the dialog box.

Figure 6.5.12  Parameters for Tear Drop

Control Parameters:

 

Rs:   Drawbar Radius

Rf:    Fillet Radius

Wh:  Wall Height (can be zero)

Sw:   Top Strip Width (can be zero)

A:     Wall Angle (default of 6 degrees)

Rt:    Tail Circle Radius

Lt:    Length of Tear Drop

 

The steps to create a drawbar are listed as following:

 

      

(a)                                                                      (b)

Figure 6.5.13 Drawbar dialog box (a) With Auto Element Size  (b) With User Defined Element Size

 

 

If the tear drop drawbar is selected, the dialog box as illustrated in Figure 6.5.13 is displayed.  Click on the SELECT TWO NODES button to select two nodes to define the direction of the centerline.  The head of the tear drop will be placed at the first selected node.  The length of the tear drop is determined by the parameters defined in the PARAMETER window.  

 

 

Figure 6.5.14  Tear Drop

 

Figure 6.5.15 shows the details of three types of drawbars.

 

Figure 6.5.15 Three Types of Drawbars