Milltronics will exhibit its Challenger series HBM110XT horizontal boring mill, featuring a rigid construction for precise machining of large workpieces. The machine includes a fully programmable, 59" × 49" (1,500 × 1,250-mm) rotary table with an 11,000-lb (5,000-kg) maximum load and XYZW travels of 78.7" × 66.9" × 55.1" × 21.6" (2,000 × 1,700 × 1,400 × 550 mm). Using a Heidenhain rotary encoder, the contouring B axis has 360,000 positions with locking pins in the 90-degree quadrants to provide additional accuracy for indexing applications.
The machining center’s 60-pocket, double-arm automatic toolchanger loads tooling into the 3,000-rpm, 50-taper spindle A 30/25-hp (22/18.5-kW) spindle motor with 2-speed geared headstock provides 636 foot-pounds (863 Nm) of torque. The spindle vibration monitor (SVM) can track excess spindle vibration to avoid poor surface finish, reduced cutting capacity and spindle failure. The precision-ground, 55-mm ballscrews driving each axis are pre-tensioned and anchored at both ends for high feed rates and axis thrust loads. Additional linear roller guideways mounted to the ends of the saddle increase table support for heavy table loads, increasing accuracy through full machine travels. Heavily ribbed castings provide rigidity and damp vibration for high-speed machining and prevent casting deformation during aggressive milling.
The FANUC 32i-MB CNC is equipped with a 10.4" LCD color display. The machine's automatic oil lubrication, oil skimmer, and 700-psi, through-spindle flood coolant system ease deep-hole drilling and deep-pocket milling applications, while the table-mounted chip guard and auger with chip conveyor provide efficient chip removal. Other features include a remote handwheel (manual pulse generator), spindle orient and rigid tapping.
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