Variable Section Sweep
The section plane remains normal to the Origin Trajectory throughout its length.
The generic Sweep behaves this way.
Norm To Traj
Two trajectories must be selected to determine the location and orientation of the section. The Origin Trajectory determines the origin of the section along the length of the feature. The section plane remains normal to the Normal Trajectory along the length of the feature.
The section plane remains normal to the Origin Trajectory as it is viewed along the Pivot Direction. The upward direction of the section remains parallel to the Pivot Direction.
A Variable Section Sweep enables you to create a feature by sweeping a section along the selected trajectories by controlling the section’s orientation, rotation, and geometry along the trajectory.
If you have a Pro/FEATURE license, you can define a solid variable section sweep feature using one or more longitudinal trajectories and a single section. With the optional Pro/SURFACE module, you can select trajectories instead of sketching them and you can create variable section sweeps of surfaces.
A variable section sweep allows you to create a swept feature by controlling the following characteristics:
You can specify the section orientation and rotation. The section can be normal to:
The Origin Trajectory—Choose NrmToOriginTraj from the SWEEP OPTS menu. This method requires selecting the Origin Trajectory and the X-Trajectory. The X-Trajectory defines the section’s horizontal vector. The origin of the section (crosshairs) is always located on the Origin Trajectory with the X-axis pointing towards the X-Trajectory.
Reference direction—Choose Pivot Dir from the SWEEP OPTS menu. The Y-axis of the section is always normal to the selected direction. The section normal trajectory is determined by projecting the Origin Trajectory in the Pivot Direction onto a plane normal to the Pivot Direction. This method requires selecting the Origin Trajectory and defining the Pivot Direction.
A selected trajectory (not the Origin Trajectory)—Choose Norm To Traj from the SWEEP OPTS menu. This method requires selecting the Origin Trajectory and the trajectory to which the section will be normal.
You can define multiple additional trajectories to which the vertices of the section can be aligned. As the section plane is swept along the Origin Trajectory, its intersections with the longitudinal curves represent the known points for section alignment and dimensioning.
You can specify whether you want to vary the section as it moves along the sweep trajectories by defining the Section Type element in the Variable Section Sweep dialog box. Choose Constant from the SECTION TYPE menu to maintain the same section, or Variable from the SECTION TYPE menu to adjust the section size as it sweeps along the trajectory.