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Machine Tools/Horizontal Machining Centre
July 2008 |
SNK America, Inc.’s Niigata HN80D Horizontal Machining Center is designed to machine medium to large parts in a range of materials.
It features traverse rates of 1,181 ipm and feed rates of 592 ipm on heavy-duty box ways. Full 50 hp cuts are achieved through an advanced (2) range geared headstock. With only three rotating components, maximum power is transmitted to the cutting tool. Large diameter ball screws, coupled direct to AC digital servo motors, provide high thrust drilling and allow utilization of the latest tool technologies.
HN80D spindles are rigid and rapid. A large spindle diameter and a single piece, snout type head design ensures heavier milling capability and greater accuracy as compared to traditional bolt-together type spindle head designs.
Other features include heavy-duty box ways with hand-scraped mating members, massive columns and bed type (triangular rib structure) construction. The bed type design provides full support over the entire X-axis travel, eliminating the possibility of overhang weakness. The Y-axis double guide system results in stability and ensures maximum rigidity and improved contouring capabilities.
A spindle chiller unit removes excess heat from the spindle and bearing housing. Oil temperature is controlled by a sensor in the machine base that adjusts the lubricating oil temperature relative to the machine’s thermal characteristics. This feature reduces thermal displacement of the spindle and provides consistent accuracy during machining. The stand-alone ATC of the HN80D does not transfer vibration or compromise precision to the spindle during tool selection.
www.snkamerica.com
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