The performance of today’s high-precision, servo-driven, computer-controlled machines is directly related to the stiffness and accuracy of their linear and rotary axes drive systems. In order to achieve precise positioning and repeatability of these axes, the mechanical components must be manufactured to very tight tolerances (on the order of 20 microns/0.0008 inch). Manufacturing these parts in small quantities (per machine basis) is very expensive and threatens the competitive position of the machine manufacturer. However, component manufacturers who supply high-precision mechanical components to many machine manufacturers are able to develop standard ranges of high-quality products that are produced in quantity with well-defined processes at extremely competitive prices.
Redex USA, a member of the Redex-Group, is able to offer modular system building blocks consisting of racks, pinions, planetary reducers and lubrication systems to build linear axes of any length and move weights from 100 to 200,000 pounds (50 to 91,000 kilograms). Furthermore, standard slewing ring bearings, ring gears and gear segments are combined with planetary reducers to drive rotary axes from 1.5 feet (0.50 meter) to 100 feet (30 meters) in diameter. The mechanical building blocks for a precision axis drive consist of:
- High-quality planetary reducers including output pinions
- Hardened and ground racks for linear axes
- Cross roller bearing slewing rings and ring gears or gear segments for rotary axes
- Automatic lubrication systems