Fives offers the Landis LTT multi-spindle, high-flexibility OD and ID grinding system, featuring two rotary hydrostatic turrets with integral servomotors and X-axis hydrostatic ways with linear motor in feed. The grinder can handle workpieces with swings of 180 mm and lengths of 400 mm, using cubic boron nitride wheels as large as 350 mm in diameter and 40 mm in width at wheel speeds as fast as 120 m/sec.
The grinder can perform multiple operations on shaft-type components that often require two or three separate machines (such as diameter and face processing), as well as OD, ID and taper grinding. With a design that eliminates mechanical backlash through linear and radial servomotors, the machine can also perform eccentric and concentric, multiple-axis contouring in various traverse configurations. Hydrostatic spindle bearings provide high system stiffness and damping. The LTT grinder uses no ballscrews, gears, linear rail systems or vee/flat guideways, easing maintenance and increasing reliability.
Featuring an ergonomic design, the machine uses the open-architecture Landis 6400 CNC for operational flexibility along with advanced monitoring and control capabilities, comprehensive gauge integration and ease of programming. A low, 1,125-mm load and access height makes the grinder compatible with standard industrial robots for part loading/unloading and eliminates the need for special automation or gantry systems in many applications. Other features of the grinding system include automatic wheel balancers and a variety of available in-process gauges, touch probes, chucks and work drives.
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