XI. Lock and clamp the Upper
11.1 LockDOF_Upper_hole/slot
The B_Upper hole will be locked in X-dir and Y-dir and the C_Upper slot will be locked in Y-dir only. This way the hole and slot can slide on the AsmFixture pins in Z-dir.
11.1.1 Select the
LockDOF icon and choose the CMRailAsm product as parent part.
11.1.2 Name the move "LockDOF_Upper_B_C". With a description of "LockDOF Upper hole in x, y-dir and slot width in y-dir".
11.1.3 Click on the [ClickToAdd] button in the LockDOF Pts section and select points B_Upper and C_Upper on the Upper part from the Navigation Tree or from the Graph window.
11.1.4 In the XYZ section check the X and Y boxes for B_Upper to constrain it in X and Y directions.
11.1.5 In the XYZ section check the Y box for C_Upper to constrain it in Y direction only. This will allow the C_Upper point to slide in Y-dir, along the Fixture pin.
11.1.6 Rx, Ry, Rz are rotational degrees of freedom. Leave the rotations free.
11.1.6 The completed dialog box should appear as below:
11.1.7 Click [OK] to close the LockDOF move dialog box.
11.2 Clamp_Upper_2_Base__A1_A2_seq_inf
Points A1_Upper and A2_Upper will be clamped to the AsmFixture using Target Associate direction and Hard (All DOF) joining type with Infinite force and in Sequence.
11.2.1 Select the
Clamp icon and choose the CMRailAsm product as parent part.
11.2.2 Name the move "Clamp_Upper_2_Base__A1_A2_seq_inf".
11.2.3 Click on the [ClickToAdd] button in the Clamping Object Pts section and select points A1_Upper and A2_Upper for the Upper in the Navigation Tree or from the Graph window.
11.2.4 Click on the [ClickToAdd] button in the Clamping Target Pts section and select points A1_Upper and A2_Upper for the Base in the Navigation Tree or from the Graph window.
11.2.5 The completed dialog box should appear as below:
11.2.6 Click [OK] to close the Clamp move dialog box.
11.2.7 Save the model.
Results:
The nominal values of the measurements after LockDOF and clamping the Upper will have very small, insignificant changes.