LATEST NEWS
  • 24/10/2015 - Heavy Duty 620G grinding manipulators equiped with improved control arm system shipped to FR & CZ
  • 20/03/2016 - Continued developement of the G30P grinding system results in new system shipped to Turkey
  • 21/08/2016 - New class of very high speed, 180KG capacity, C320 manipulators shipped to Turkey
  • 17/01/2016 - CDL continues testing of Servo-Pump grinding system - reducing energy use & improving power control
  • 22/11/2015 - Quick change canon mounting system designed and shipped to US customer greatly reduces down time
  • 31/07/2016 - Repeat orders shipped to large German Foundry group
  • 27/11/2016 - Continued developement in grinding automation results in Planar grinding and automated riser stub removal

Selective Force Limitation

A 500 kg capacity manipulator may need a force in the horizontal cylinder of around 17 tonnes to push the arms out from minimum radius. Larger machines will need larger forces, so a cylinder is supplied to push with this force. However once the load has reached top dead centre it needs no force for the other half of the horizontal stroke because gravity can do the work.

This means that if the operator stalls the machine against the floor or a conveyor the cylinder force of around 17 tonnes plus the self weight of the manipulator, act together to cause very large stall loads on the machine. This leads to breakages because in certain positions of the machine, the bending moments which these forces cause, are large.

In the diagram it can be seen that all the force from the cylinder is available for doing damage.

But the force still exists because the cylinder knows only to push with a force of 17 tonnes.

So Clansman Dynamics cuts that force to a negligible figure once the manipulator is beyond a certain point in the envelope. The operator is completely unaware of the change of mode. There is no loss in performance.

But Selective Force Limitation gives a 40% reduction in the forces that act to destroy the manipulator (and conveyors, monorails, etc.).