T-FLEX Parametric CAD. Fundamentals. 2D Design

Bill of Materials
The table on the tab “Custom Data” has
columns “Name”, “Data”, “Variable”.
To input data, select the desired name,
click in the input box below the list
pane, and type in the entry data. To
add/delete new BOM data, use the
graphic buttons [+] and [-]. The user
assigned names for data entries and
their contents are stored in the current
document. When using the document as
fragment, those are also entered into the
assembly BOM.
All the entries, except the “Group”
Entry on the tab “Main Data”, are filled
manually. While filling the information,
the context menu commands can be
used for inserting various symbols and
variables in the input entries, for creating value lists, etc. A list of predefined records for future insertion can
be created as follows. Enter the required information in the input box and press the key or call the
context menu by pointing the mouse to the input box and right clicking . In the context menu, select the
item “Add value to list”.
Additionally, any entry field allows entering as part of the entry a no-line-break space character (%%S) or
hyphen character (%%-) in order to avoid undesired line breaks, and the line break symbol (\n) to force the
line break.
Any data entry of a BOM can be controlled by a variable. To assign a variable to an entry, check the box on
the right of the current entry. This brings up the standard dialog box “Insert Variable”. The value of the
variable selected in this dialog box is entered in the current entry.
Note, that editing a entry controlled by a variable modifies the value of this variable. If the entry is controlled
by a driven variable (defined by an expression or function), editing is not allowed. The described mechanism
realizes automatic input of description and product name of the drawing into the title block, and the BOM
data. For this purpose, certain hidden variables exist by default to drive the BOM data.
When filling in the entries, one can type in the variables of the drawing, in braces. For example, one can
enter the following string in the description field for the fragment “Shoulder Screw”:
Shoulder Screw M{d}x{L}, where d and L are the variables driving the thread pitch and the length of the
screw, respectively.
If such fragment is used in assembly, whose BOM table contains records related to the fragment “Shoulder
Screw”, then the “Description” field contents will be changing depending on the d and L variable values.
The diagram shows an excerpt from the “Description”
column for two fragments.
The first “Shoulder Screw” fragment was assembled
with the values:
d = 20 L = 60
The second one was assembled with the values:
d = 16 L = 50
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