Kitamura's Mycenter-HX300iG 400 Combines Large Work Area in Small Footprint
Kitamura Machinery’s Mycenter-HX300iG/400 expands the company’s small-footprint HMC offering, providing heavy-duty cutting, accuracy and reliability.
Kitamura Machinery’s Mycenter-HX300iG/400 expands the company’s small-footprint HMC offering, providing heavy-duty cutting, accuracy and reliability. For its size, the machine is still designed with a large work envelope, with a maximum workpiece diameter of 500 mm (19.7"), a maximum workpiece height of 745 mm (29.3"), and XYZ axes measuring 460 × 510 × 560 mm (18.1" × 20.1" × 22"), respectively. A 400-mm table option offers additional workholding possibilities.
The 30-hp, 15,000-rpm, 40-taper, direct-drive, dual-contact spindle is said to be capable of handling a variety of exotic materials. A 20,000-rpm dual contact spindle is also available.
The fully integrated fourth-axis rotary table, equipped with an integral drive motor, enables rapid indexing speeds of 150 rpm (54,000 degrees per min.) reducing out-of-cut time, eliminating backlash and providing positioning accuracy of ±2 arcseconds.
An expandable 50-tool automatic toolchanger allows for the addition of up to 200 tools as needs change. The ATC is fixed-pot, which ensures that tools are always returned to the same pot and that the next tool to be used is kept in a stand-by pot) A 1.3-sec. tool-change time contributes to the reduction in overall cycle time made possible by the machine, the company says.
The Mycenter-HX300iG/400 provides positioning accuracy of ±0.002 mm (±0.000079") with 67-million-pulse encoder technology for better finish accuracy. To accommodate a variety of metal cutting requirements, the machine offers rapid traverse rates of 60 m/min. (2,362 ipm), ballscrew cooling, and 10-nm optical linear scale feedback in the linear axes.
Speed changes the rules. To maximize metal removal rate with a high speed spindle, follow some fundamental tooling considerations and mill at just the right rpm.
The recipe for best results is simple: Start with a rigid machine, add a high pressure through-the-spindle coolant system, then combine these with the right drill geometry plus the right speeds and feeds.
Hand-scraping the mating surfaces of a CNC machine tool’s motion system offers myriad advantages.