caeshop

Single Increment Forming - Toolpath Definition

Reference: 10.24191/jmeche.v17i1.15221

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Single point incremental forming (SPIF), is a relatively new process for manufacturing sheet metal parts. It is well suited for small batch production or prototyping

Studies have shown that tool-path created in Matlab script has widely used for the numerical simulation of SPIF 

Consider the Truncated cone with dimensions as below:

  • Rtop: radius of top cone
  • Rbot: radius of bottom cone
  • R: radius at any depth
  • d: depth of the cone
  • alpha: angle of inclination of the cone
  • dz: step depth
Number of loops in depth axis:
  • N=d/dz

At each step:

  • Position in Z:
    • Z(beta) = 0-dz*beta/360 (beta is an angle from 0 -> 360o)
  • Radius at Z position:
    • R=Rtop - dz*beta/(360*tand(alpha))
  • X, Y positions:
    • X(beta) = R*cosd(beta)
    • Y(beta) = R*sind(beta)

 

Example data:

  • Rtop = 50 mm
  • d = 5 mm
  • alpha = 45o
  • dz = 0.5 mm
  • Total time analysis: 20s