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TASK
In a Russian end customer’s factory, unfinished train wheels must be removed from the stack and deposited in one of the four vertical lathes in the lathe cell. There are 2 cells with 4 vertical lathes each.
A low shop crane limits the height of the portal. Moreover, the wheels are stacked six high and held in place by means of a centering mandrel in the middle. Because of the centering mandrel, the gripper must be arranged at an angle in order to be able to reach the bottom wheel.
The unfinished wheels are stamped with a unique code which must be read by a camera system. It is unclear where the code is located on the circumference of the wheel. Product data are collected via the wheel code and transmitted to the customer’s OPC server.
Wheel weight: max. 1,200 kg
Wheel diameter: 700 - 1,270 mm
Total weight, incl. gripper: 2,500 kg
SOLUTION
A slightly modified FP-7HD area portal allowed the construction height to be maximized. The gripper was redesigned and furnished with an integrated turn axis. The camera system was designed to move radially and to rotate in order to find the code on the wheel circumference. The unfinished wheels are conveyed to the cell and the finished wheels from the cell in stacks of six by means of shuttles.
The two cells are identical.
SCOPE OF SUPPLY
FP-7HD area portal incl. unique gripper, turn axis (hydr.), camera system incl. radial alignment and rotational movement
Deposit space, Siemens control, software, installation and initial start-up
RESULT
Despite the projection, the angled gripper can grip parts with up to 1,200 kg of mass and turn them 180°. The optimal design allows the parallel movement of the gripper stroke to serve as a counterweight.
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