Colombo Filippetti S.p.a.

Special Product Ideas

Cofil and the co-engineering approach
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In the Spheroconical cam, unlike the Cylindrical cam commonly used, the contact surface between the follower and the cam’s profile is constant, using the whole height of the follower. In the Cylindrical cam the height of the contact surface varies during the rotation. For this reason the engineers must increase the diameter of the Cylindical cam to obtain a better contact, but the compactness and the speed of the machine is reduced.

The contact between the cam profile and the follower does not create any axial sliding movement so the friction is reduced and:

  • efficiency is increased
  • reliability is increased
  • lifetime is increased
  • operating speed is increased 
  • maintenance is reduced

The Spheroconical cam can be used to transfer objects between two transfer lines and to reorient them. The output follower’s wheel is dragged by the machine driver and rotates around the fixed Spheroconical cam, while the follower’s lever oscillates around its axes as imposed by the motion law of the cam profile. The dragging forces the follower’s wheel to meet the picking and posing positions and the cam profile rotates the object. 
In the video below the Spheroconical cam is shown trasferring and reorienting sanitary napkins.

The Spheroconical cam can also be used to move the polishing heads for marble, granite and tiles.