Spar Winding

The Cadfil Spar winding program is part of the non-axisymmetric suite of programs for complex winding geometries. The
user defines the (constant) cross section of the mandrel using 2D lines and Arcs in a CAD system such as AutoCAD. This
cross section information is written to a DXF file which is then read by Cadfil to create the 3D mandrel surface.

The user specifies the standard parameters such as mandrel length, the program start position, wind angle, band-width...
The software then automatically calculates the paths and winding pattern which can be viewed in the standard Cadfil 3D
viewing system.

Multiple wind patterns of different wind angles and wind lengths can be created and this can be automatically joined to
create a complete multi-angle continuous program with no stops.

Cadfil-Spar has two types of winding pattern Generation depending on wind angles :

High Angle (30-90 degrees to axis)

High angle does not require winding over the mandrel ends allowing easy mandrel extraction and fast winding.

Low Angle ( 6-30 degrees to axis)

For this option the fibres pass across the end on the mandrel and around the mandrel support shafts. Care must be taken
in the design of the mandrel end shape and in the shaft diameter. We have considerable experience in this area and will
give advise where required.