Modular Rotary Tables Handle Virtually Any Workpiece

Available from Exsys Tool, pL Lehmann’s 500 series of modular multi-axis rotary tables is designed to allow users to upgrade a vertical machining center to increase productivity without having to add a new machine.

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Available from Exsys Tool, pL Lehmann’s 500 series of modular multi-axis rotary tables is designed to allow users to upgrade a vertical machining center to increase productivity without having to add a new machine. Adaptable to virtually 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 such as rotary unions, special clamping cylinders and angular position measuring systems further extend the system’s adaptability.

The compact tables consume a minimum of space in the machine work envelope, facilitating optimal tool access to the workpiece. Despite their space-efficient dimensions, however, the tables and spindles offer strong resistance to pullout torque and axial force while providing high levels of clamping torque, the company says.

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