Exsys Tool Inc. will spotlight its high-precision pL Lehmann rotary tables as well as the product line’s swissClamp modular clamping system at IMTS 2016. The company will also demonstrate several other productivity-enhancing Exsys technologies in Booths #W-2061 and #N-7223, including the Preci-Flex® tooling system.
The Swiss-manufactured pL Lehmann rotary tables allow users to upgrade a vertical machining center’s productivity without incurring the expense of a new machine. The tables are available in four basic models that can be assembled into as many as 240 different configurations. More than 20 different available clamping methods and behind-the-spindle accessories further extend the system’s adaptability.
All pL Lehmann tables consume a minimum of space in the machine work envelope, facilitating optimal tool access to the workpiece. Despite their space-saving dimensions, the tables and spindles offer strong resistance to pullout torque and axial force while providing high levels of clamping torque. Engineered for low power consumption and light weight, the tables feature IP67 rated enclosures. The line also offers an extensive selection of workholding interface options.
Both single-spindle and multi-spindle pL Lehmann tables are available in fourth axis and fourth/fifth-axis versions. Swiveling-bridge-style 4-axis tables employ the 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 seconds. IMTS attendees will experience the pL Lehmann rotary table’s full fourth axis with faceplate and fifth-axis functionality to simulate its movement within a machine tool work envelope. The fifth-axis table operates in simultaneous machining or productivity-enhancing 3+2 positioning modes.
Working in tandem with pL Lehmann rotary tables, the new swissClamp system allows operators to mount multiple workpieces on machine tool tables for uninterrupted production and unmanned operations. For use with rotary and standard tables on vertical or horizontal milling machines, the Swiss-manufactured swissClamp modules mount on faceplates or directly on worktables and extend a shop’s potential part-clamping range from 90 mm to 200 mm — a 40-percent increase in workpiece capacity within the same clamping length.
SwissClamp enables both mono clamping, requiring only one basic body, and duo clamping, where two mono clamps are mounted opposite one another. Configuration options include creating a clamping tower/tombstone on a fourth axis, a horizontal clamping cone that is overhung or with counter bearing, or a clamping bridge on a trunnion table set up where both sides require a different design with mono and duo systems. Operators can also create clamping modules on the fourth or fifth axis.
When used for finish clamping, swissClamp’s finish jaws achieve non-rotating, precise parallel clamping with a clamping stroke of approximately 1 mm that prevents indentations and ensures high surface quality. The system enables finish clamping to a depth of 6 mm.
As Exsys’s flagship tooling system, Preci-Flex offers a fast, accurate, and cost-effective solution for turning machine tooling changeovers. The modular holder system is the first on the market to incorporate a single base holder and multiple tooling adapters that use the ER collet pocket. The system’s conical and flat face planar interface allows the use of either an adapter or a standard ER collet and enables collets, end mill holders, expanding collet chucks, and shrink fit tooling to be mounted on a single base holder.
Available in a range of sizes, Preci-Flex provides unsurpassed productivity and reliability, with every toolholder offering repeatability within 5 microns. The system also virtually eliminates machine downtime and allows tooling adapters to be interchanged between fixed and rotary base holders for fast, economical machining.