Multi-Axis Rotary Tables Improve Access to Workpiece

The pL Lehmann 500 series of modular multi-axis rotary tables from Exsys Tool enables users to upgrade a vertical machining center to increase productivity without incurring the expense of a new machine. Adaptable to nearly any workpiece or production situation, the tables are available in four basic models that can be assembled into as many as 240 different configurations. More than 20 different clamping methods and behind-the-spindle accessories are available, including rotary unions, special clamping cylinders and angular position measuring systems that further extend the system’s adaptability.

These compact tables are designed to occupy as little space as possible in the work envelope to ensure optimal tool access to the workpiece. Despite their dimensions, the tables and their spindles offer strong resistance to pull-out torque and axial force while providing high levels of clamping torque, the company says. Engineered for low power consumption and light weight, the tables feature IP67-rated enclosures.

Both single- and multi-spindle tables are available in four-axis and 4/5-axis versions. Swiveling-bridge style five-axis tables employ the Roto-Fix clamping yoke for machining multiple parts. The tables’ backlash-free, preloaded gear drives provide both high torque and high rotation speeds, with spindles capable of 47 to 111 rpm and cycle times for 90 degrees of 0.34 sec. Five-axis tables operate in simultaneous machining or 3+2 positioning modes.