Traveling-Column VMC Accommodates Long Workpieces
The Kent USA KVTC-3270 CNC traveling-column vertical machining center provides a large working envelope with X-, Y- and Z-axis travels measuring 126" × 28" × 24" (3,200 × 720 × 620 mm), respectively, while occupying minimal shopfloor space.
The Kent USA KVTC-3270 CNC traveling-column vertical machining center provides a large working envelope with X-, Y- and Z-axis travels measuring 126" × 28" × 24" (3,200 × 720 × 620 mm), respectively, while occupying minimal shopfloor space. Featuring a long stationary table, the VMC is well-suited for robotic integration and automation, and is said to be more reliable than a comparable moving-table design. The table can be partitioned into two halves, with one half machining a workpiece while the other is loaded or unloaded, improving overall productivity. The machining center can accommodate applications with long workpieces or complex fixturing requirements, the company says.
Roller-type linear guideways on all three axes provide smooth, precise machining with increased rigidity for longer tool life and improved workpiece finishes. The direct-mounted spindle motor is equipped with a 10,000-rpm, 40-taper spindle and chiller. An automatic toolchanger holds as many as 24 tools. Options include a 50-taper spindle, through-spindle coolant, spindles ranging to 30,000 rpm, and 32- or 40-tool magazines.
While aluminum molds are commonly used to create prototypes or to serve as stopgap bridge tooling, they are starting to receive greater attention for production work. This shop’s approach to creating aluminum molds in one day to three weeks is the same for each of these situations.
Accuracy is not just inherent to the machine—it also depends on how the machine is used. Try these techniques to let a new or existing CNC machining center achieve its potential precision.
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.