The is where all geometry begins. These tools allow you to create the basic shapes that define your part's cross-section.
Apply geometric constraints first (coincidence, tangency), then add dimensional constraints. Avoid over-constraining (red color). catia+v5+sketch+tools
: Used to set dimensions (lengths, angles, radii) or geometric relationships (coincidence, tangency, fix). The is where all geometry begins
: This allows you to create a 3D volume by intersecting two separate 2D sketches. It effectively "extrudes" both profiles and keeps only the area where they overlap. Avoid over-constraining (red color)
Maia's mechanism borrowed from nature. She studied how morning glories unfurl and how pinecones close in drought. The petals of her clock were linked by slender struts that pivoted on hidden pins. A central cam, turned by a low-torque stepper, pushed the struts in sequence. But to translate the cam's simple rotation into the delicate motion of opening petals, she needed offsets and silhouette controls—sketch patterns that defined contact points, projection curves to guide the mate behaviors. Catia’s sketcher allowed her to project edges from one plane into another, making three-dimensional motion possible from two-dimensional intent.
Some other important sketch tools in CATIA V5 include: