7_23 Assembling components P1_wf4_v4

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There are several ways that you can initiate assembling     Before you finish constraining any component, you           To add a new constraint, select “new constraint” from
components together. The most common constraints            should check the placement status. When you initially       the right mouse button or from the placement tab. To
that are used are the Mate and the Align constraints. If    add a component to an assembly, the status will say         assemble a component, you need at least two con-
you place the palms of your hands together, you have        “No Constraints.” When you have defined enough              straints. But typically you will want three or more to fully
applied a Mate constraint to your palms. If you place the   constraints to locate the component, the status will say    locate the component. If you have two constraints de-
palms of your hands on a table, you have applied an         “Fully Constrained”.                                        fined, then Pro/ENGINEER may be able to make assump-
Align constraint to the palms of your hands.                                                                            tions about constraining the model. The assumption will
                                                            A “component” can be a single piece-part or even a large    result in the model being considered fully constrained.
There are several other constraint                          sub-assembly. Both are called components when doing         If you do not want assumptions to be made then con-
types as shown to the right.                                assembly work.                                              tinue to add constraints.

The typical goal in assembling                              The basic assembly procedure is to select a component              While assembling components, use the drag
components is to prevent the                                to assemble and then move it into the approximate loca-            packaged component icon to move any compo-
component from moving in any of                             tion. This can be done by holding down the CTRL+ ALT               nents that are not fully constrained. This may be
the three directions, X, Y, and Z, or                       keys while right-clicking. You can also rotate just the     done to assemble a component into an area that is diffi-
rotating about any of the same                              component by holding down the CTRL+ ALT keys, while         cult to access.
directions. If you want a compo-                            using the middle mouse button. Note, these options are
nent to move, use joint constraints                         only available while assembling components. To move
instead of regular assembly con-                            the whole assembly and the component at the same                  You can also use the Orient Mode option in order
straints.                                                   time, use SHIFT and the middle mouse button. To rotate            to more accurately control the movement of
                                                            the entire assembly and component, just hold down the             components. Once selected, you can move just the
Under the placement tab you can see what constraints        middle mouse button.                                        component by holding down the right mouse button
you have defined and what geometry has been selected                                                                    and selecting the Orient Object option. This will then
for the assembly reference as well as the component         After a component has been moved into position, ge-         allow control of the movement of the component being
reference. Currently nothing has been selected.             ometry can be selected on the component and on the          assembled.
                                                            assembly. The component that is being assembled will
If you need to reselect a                                   be displayed in either of the two preview colors as
component reference,                                        shown depending on partially constrained or fully con-                           Advanced orientation options
hold down the right                                         strained placement status. A constraint type will be                             Dynamic, Anchored, Delayed, and
mouse button in “Select                                     chosen based on the type of geometry selected. If an                             Velocity provide a handy way to
component item” or                                          incorrect constraint is selected, simply change or delete                        manipulate the component as it is
“Select assembly item”                                      the constraint by holding down the right mouse button                            assembled.
then Remove, followed by                                    over the constraint tag in the working window or in the
selecting a new reference.                                  placement tab.

                                                                                                                        Orient Mode can also be accessed and turned off by
                                                                                                                        holding down the CTRL+ SHIFT keys and clicking the
                                                                                                                        middle mouse button.

                                                            Fully Constrained            Partially Constrained

Assembling Components                                                                                                                                               ASSEMBLIES         36

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