Bridgeport V1320's Dual Y-Axis Bearings Increase Surface Quality
Hardinge has added the V1320 to Bridgeport’s V series of vertical machining centers. The machine is designed for high capacity and performance in the aerospace, automotive and energy markets. Among the machine’s features are dual Y-axis ballscrews said to promote surface quality and roundness accuracy, acceleration, reduced vibration, and increased tool life.
With a 15" Mitsubishi M80 Color LCD touchscreen, users can pinch to zoom in and out, scroll through screens, move popup windows on the screen, or drag with a single finger. The M80 also comes with two 32-GB SD card slots for memory expansion, USB program running and high-accuracy modes.
The V1320’s oversized, 45-mm double-nut ballscrews are fixed and pre-tensioned. The large, 45-mm linear guideways are supported by six trucks on the X and Z axes.The Y axis has dual 40-mm ballscrews.
The machine has a Big Plus, 40-taper, 12,000-rpm direct-drive spindle powered by a dual-wound Mitsubishi spindle motor. A quad set of 70-mm angular contact bearings and a 60-mm rear taper roller bearing provide thermal stability, radial and axial stiffness, and high accuracy as well as 900 kg tool retention force for aggressive cutting applications.
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.
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.
Old-world craftsmanship combines with precision machining on a vertical machining center and Swiss-type lathe to produce some of the only U.S.-made mechanical wristwatch movements.