Elbow parametrics
This generates full coverage winding programs for elbow (pipe bend) components. Click here to see the part geometry. The elbow parametric can be invoked (if supplied) from the Cadfil parametrics menu described elsewhere in this manual. The user enters a series of data parameters which are saved as a <filename>.PAR text file and example file EL1.PAR is supplied with the software in the EXAMPLES directory. The program automatically creates a <filename>.MND and <filename>.PAY when run. These can then be viewed using the payout options or post processed using the CADFIL post-process options.
The basic data parameters are as follows :
****Elbow Parametric****
Mandrel radius (R)
Centre Line bend Radius (Rc)
Bend angle (degrees) (A)
Parallel length (both ends) (L)
Wind axis offset distance (Yoff) - Note the direction of the Y axis in the diagram. Winding axis offset is normally thus a negative value!
Points per rotation (N)
Band width (Bw)
Free fibre length (Fl) - length of fibre between mandrel and payout eye
Friction coefficient (Mu) - used to turn the fibre in the cylindrical (parallel pipe) turning area at the ends.
Wind angle - degrees (Alpha)
Note that care selection the winding axis offset and free fibre length is required as this otherwise can result in the elbow rotating forward and backwards in the winding machine rather than is a constant direction.