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Mazak Corporation made several key performance enhancements to its Horizontal Center Nexus (HCN) 4000-III HMC. As a result, the machine delivers significantly increased amounts of productivity and cost effectiveness, especially for those shops looking to implement horizontal machining centers as go-to workhorse machines for high-volume part processing operations, the company says.
Key performance enhancements include those that shorten part cycle times and allow the HCN 4000-III to handle even more part sizes and more parts per setup. Faster rapid traverse speeds and acceleration rates, shorter chip-to-chip times and increased tool size capability are what contribute to reductions in cycle times. While greater part size versatility and parts per fixture result from the HCN 4000-III’s expanded Y-axis travel/stroke, as well as a higher allowable thrust in its Z axis.
Rapid traverse speed on the HCN 4000-III is now 2,362 ipm (60 m/min), and machine acceleration rate went from 0.8 G to 1 G. Mazak also shortened the machine’s spindle acceleration speed to only 1.3 seconds for its standard 12,000-rpm spindle and to 1.5 seconds for an optional 18,000-rpm spindle.
The company also offers 14,000-rpm and 30,000-rpm spindle options for the HCN 4000-II. There are four available integral motor spindle types: standard, high torque, semi-high speed, and high-speed.
The standard 40-taper 12,000-rpm spindle provides power and speed for general machining applications, while the high-torque heavy-duty 40-taper 14,000-rpm version generates 88 foot-pounds of torque at a continuous rating to a maximum of 223 foot-pounds to increase metal removal rates for hard to machine materials. With maximum speeds of 18,000 rpm and 30,000 rpm, the 40-taper semi high-speed and HSK high-speed versions allow for faster machining and superior surface finishes when cutting aluminum and other nonferrous workpieces.
The HCN 4000-III performs chip-to-chip tool changes in 2.4 seconds, a reduction from its original time of almost 3 seconds. The machine’s maximum tool size capacity has also increased from 5.9” (150 mm) in diameter to 6.7” (170 mm) in diameter, allowing for the use of larger tools and, thus, faster metal removal for even shorter part cycle times.
Mazak has equipped the machine with a standard 40-position tool storage magazine and, as optional, offers 60-, 80-, 120- and 160-postion magazines in addition to its Tool Hive magazines with either 180, 240 or 330 positions. The large tool storage capacity of the HCN 4000-III means shops can handle a variety of parts and perform continuous unattended machining over long periods of time, the company says.
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A small shop describes the efficiency gains it is seeing now that it has a horizontal machining center instead of solely verticals. One of the shop’s leaders talks through processing of parts then and now.