You can create a reference axis, also called a construction axis. Click View, RefGeom, Ref Axis to toggle the display of reference axes.
To create a reference axis:
Click Axis(Reference Geometry toolbar) or click Geometry, Reference Geometry, Reference Axis .
In the dialog , select the type of axis you want to create and the items to create the axis:
Parameters. Create an axis through a point and a direction vector by parameters.
Line. Create an axis through a line or linear edge.
Planes Inter. Create axes by the selected planes' intersection.
Two Pnts. Create an axis by two points.
Axis of Revol . Create an axis which is the axis of circle/ellipse/cylinder/cone/revolve surface.
Tan/Nor to Cur. Project the selected point to the selected curve. The result ref-axis will pass the projected point and the direction is the tangent direction on the curve. If the curve and the point locate at the same plane, you can also check "Normal to Curve" to create an axis normal to the curve using the point as reference.
Tangent with Curve: Project the selected point to the selected curve. |
Point to Plane. Select a plane and a point, the axis will pass the point and normal to the plane.
Normal to Surf. Select a surface and a point. Project the selected point to the surface. The axis will pass the projected position and normal to the surface.
Point to Plane. Select a plane and a point, the axis will pass the point and normal to the plane.
Two Lines. Create an axis normal to the two selected lines and pass the intersection point of the two lines. Checking "Middle" will make the axis locate at the same plane with two selected lines and equal angle with two lines.