The Nakamura-Tome NTY3-250 multitasking turning center from Methods Machine Tools has three high rigidity turrets, each with a Y axis of 4.4” (112 mm)—the longest Y axis in its class, according to Methods. The turning center is designed to outperform two-turret multitasking machines and can eliminate downtime because of tool change-overs with its 72-tool capacity. This allows for short cycles times and complete turning/machining/finishing capabilities.
The turning center provides X axis and Z axis speeds of 1,181 ipm and 1,574 ipm respectively. Designed with a long 47.24” (1,200 mm) distance between spindles to eliminate any interference of tooling during multitasking, the NTY3-250 allows for multiple tools in the cut simultaneously.
The NTY3-250 also features a 60-degree slant bed for easy access to the work and tooling, in addition to better chip flow. Each of the three turrets holds 12 driven or 24 stationary tools, for a maximum of 72 tool stations. As much as 35/30 hp is available for shaft/ work turning with synchronized spindles.
The NTY3-250 has a maximum turning diameter of 8.86” (225 mm), a maximum turning length of 35.65” (905.5 mm) and a 2.5” (65 mm) bar capacity. The turning center features a 19" high-resolution, touchscreen LCD panel. The Nakamura-Tome Intelligent Programming System (NT-IPS) is a PC-based control that is built into the machine. It works in conjunction with the latest Fanuc 31i-B controller to give a high degree of functionality, coupled with fast processing speeds. New standard functions include a spindle speed override switch, a program number search, C-axis synchronization and helical interpolation.
Unlike conventional CNC interfaces, which involve extensive menu selections and navigation through numerous screens, the NT-IPS is able to present a large amount of information in a clear format and allow one-touch access to all setting functions for faster setup and programming, according to the Methods. The trouble guidance feature helps users quickly identify and respond to machine error signals by delivering a description of the error and possible causes, along with a series of pictures that show the location of the problem.
Adding Tilt to Trunnion-Table Turning
A modified gantry structure and other design attributes help consolidate setups even further on these five-axis machining centers. Includes video.