MASTER PROFILE
A profile is defined as cross section line of the addendum that is usually cut along the outer boundary of a part at a direction normal to the boundary. A master profile is used as the primary reference profile for the global addendum geometry. The global setting for profile parameters such as width, height, radii and angles are used as default for other profiles. For various distances between part and binder around the addendum, only height and length may be varied from the master profile.
The displayed master profile does not represent the real geometry at every section on the addendum as the distance between part and binder varies. The displayed master profile is only a schematic drawing with respect to the settings for width, height, radii and angles.
Click on the NEW button from the ADDENDUM GENERATION dialog box to open the PROFILE window. This window shows the master profile with the end section of the part and binder geometry. Figure 6.3.3 illustrates a Type 1 master profile with two radii.
Figure 6.3.3 Master Profile window
The dotted circles represent various radii parameters that can be interactively changed. The user can place mouse cursor near the circle, click and hold left mouse button and drag circle to modify the radius. eta/DYNAFORM dynamically displays the radius in the corresponding input field under the radius column.
For profile as illustrated in Figure 6.3.4, four different dashed lines can be used to adjust the location of the circles. The total length-of-line of the profile is displayed at the lower right corner of the GRAPHIC PROFILE window. The location of lines and size of circles may also be modified from the corresponding input fields.
Figure 6.3.4 Various Addendum Parameters
NOTE: The user should create different profiles using these lines to further understanding the control parameters. In some cases, some parts of a profile may not be moved in certain directions to prevent unreasonable addendum designs. The user should also change different parameters to check the effects on the profile.
WIDTHS:
BAR: Determines the width of the drawbar.
PO Line: Determines the position of the punch opening line (PO Line).
HEIGHTS:
BAR: Determines the height of the drawbar.
CBAR: Determines the position of the CB height line (Counter Bar) with respect to the part boundary.
There are 6 types of master profiles available in DFE:
TYPE 1
The TYPE 1 profile is used primarily for parts with vertical edges. This type of profile will produce a tangential transition from the part boundary to the binder surface. As illustrated in Figure 6.3.5, the BAR WIDTH, BAR HEIGHT and CB HEIGHT are disabled in TYPE 1 profile. This type of profile is always extended from the part boundary.
Figure 6.3.5 Profile Type 1 window
TYPE 2
The TYPE 2 profile produces the shortest distance between the part boundary and the punch opening line. As illustrated in Figure 6.3.6, the BAR WIDTH, BAR HEIGHT and CB HEIGHT are disabled in TYPE 2 profile.
Figure 6.3.6 Profile Type 2 window
The position of the PO width depends on the punch and die radii, and the part plus width (if not zero).
TYPE 3
The TYPE 3 profile is illustrated in Figure 6.3.7. The height of BAR is measured from the tangential extension of the part. BAR WIDTH is set to minimum and disabled. CB HEIGHT is also disabled.
Figure 6.3.7 Profile Type 3 window
TYPE 4
The TYPE 4 profile is illustrated in Figure 6.3.8. CB HEIGHT is measured from the part boundary. Both BAR WIDTH and BAR HEIGHT are disabled.
Figure 6.3.8 Profile Type 4 window
TYPE 5
The TYPE 5 profile is the combination of TYPE 4 profile with a simple drawbar. As illustrated in Figure 6.3.9, both BAR WIDTH and CB HEIGHT are disabled.
Figure 6.3.9 Profile Type 5 window
TYPE 6
The TYPE 6 profile is a combination of TYPE 5 profile with a full-featured drawbar. As illustrated in Figure 6.3.10, all parameters are enabled in this type of profile.
Figure 6.3.10 Profile Type 6 window
OPERATION
The functions under the OPERATION field are used to perform input/output and viewing of the master profile.
SAVE
This function enables the user to save parameters of the current master profile to a profile (*.prf) file. Click the SAVE icon to open the dialog window as shown in Figure 6.3.11.
Figure 6.3.11 save Profile Parameters in the File
OPEN
This function enables the user to open a profile file (*.prf) and import its parameters into the current master profile.
WINDOW ZOOM
Enable the user to magnify selected area.
FILL
Automatically fit the profile to fill in the display window.
After clicking on NEW button to add a master profile, the name of the profile will be listed in the MASTER PROFILE LIST window as illustrated in Figure 6.3.12.
Figure 6.3.12 Master Profile Operations
To modify the master profile, the user selects a master profile from the list, following by clicking on the MODIFY button. The PROFILE window is displayed. The user may modify parameters of the selected master profile in this window.
The user can select a master profile from the list, following by clicking on the DELETE button to remove the selected master profile.
NOTE: eta/DYNAFORM will automatically update the addendum after the master profile is modified. If a segment of the addendum is created based on a master profile, this master profile cannot be deleted until the segment is deleted first.