Requirement profile

For chemical treatment process at the workpiece a compact two axis system for a turning stroke with modular structure and uniform interface was demanded to the platform. In order to be able to ensure a process security during processing of the sensitive workpiece under external changing dynamic effects a very rigid and vibration-poor construction method is necessary. Truth of running of the high-dynamic turning unit under microns are requested. Due to the extremely aggressive media special materials and finish quality are inevitable. Since the machines are used in the three-shift operation, an appropriate reliability and stability are necessary. All relevant positions of the unit must be easily attainable for maintenance and service work. The entire assembly must correspond to a defined clean room class. The functional inspection takes place by the supplier.

Solution

Due to FEM computations an integral, compact casting design with extremely
high rigidity of the system could be realized. The axis of rotation is moved over one
ballscrew vertically. The dynamic and static rigidity of the axis of rotation was realized by a special arrangement of preloaded linearways with stainless IKO roller ways. The demanded rotational accuracy for higher revolutions was realized by the applied preloades ball bearings for high numbers of revolutions. The electric drive of both axis is realized by servo motors. All construction units were equipped in corrosion protected version with a combined coating against extremely aggressive chemical effects in the wet and drying range. Bearings, ballscrew and linear ways are lubricated with appropriate IKO clean room grease. All movements are
supervised by contactless sensor technology. The assembly is examined and logged for its demanded expiration operational sequence to 100%. A function control is accomplished by application identically test procedure with each manufactured assembly.