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ACF Aligned C-Frame. Errors in SPR/Clinching. Initial riveting position. y. x. d – misalignment a – angular error x – position error u y – position error v. Development of new C-frame concept.
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ACF Aligned C-Frame Dan Holm
Errors in SPR/Clinching Initial riveting position y x d – misalignment a – angular error x – position error u y – position error v Dan Holm
Development of new C-frame concept The third generation is also an ACF (Aligned C-Frame) but completed with the property of non moving joining point. That excludes need for equalisation system which save both weight and cost. Since there are no movement of the joining point there will be no load introduced in the work piece and robot due to the riveting/clinching process. Dan Holm
Errors misalignment u[mm] 0.50 angular error[degree] Initial riveting position 0.40 misalignment w[mm] 0.30 position error u[mm] 0.20 position error v[mm] y 0.10 0.00 x -0.10 -0.20 -0.30 -0.40 -0.50 -0.60 acf410x400_80 c410x400_140 acf410x400_200 0.0273 -0.2237 -0.1041 misalignment u[mm] 0.0857 0.4322 -0.0460 angular error[degree] d – misalignment a – angular error x – position error u y – position error v 0.0648 0.0541 0.0696 misalignment w[mm] 0.2295 0.4401 -0.2081 Position error u[mm] 0.0593 -0.4586 -0.0422 Position error v[mm] v w u New generation ACF(Aligned C-Frame) ACF410x400 die 80 mm weight 58 kg ACF410x400 die 200 mm weight 58 kg C410x400 die 140 mm weight 117 kg Dan Holm unapproved joint approved joint
New generation ACF(Aligned C-Frame) Test results Vertical deflection for die and setter Dan Holm
New generation ACF(Aligned C-Frame) • Optimized for maximal performance • No movement of die during riveting/clinching/spot welding no need for expensive and heavy equalisation system. No forces introduced in work piece and robot due to riveting process • Perfect alignment between die and setter in all orientations for optimal joining quality • Allowing a wide span of die heights while maintaining performance • Approx. 50%, often more, weight saving compared to conventional C-frame • Range from throat deepth of 300 mm and above Dan Holm