Modern Machine Shop

AUG 2018

Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.

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MMS AUGUST 2018 134 IMTS 2018 Milling Machines Machining Center Features Loading Robot, Pallet Storage Designed to function as an independent cell, SW North America's dual-spindle BA WO2-22 machining center features an integrated six-axis robot for loading and unloading and vertical pallet storage for both blanks and finished parts. A crane-hook system and some pre-as- sembly speed installation and setup. Said to be useful for watchmaking and impeller applications, the twin-spindle machine is designed to cut complex shapes in non-magnetic materials. Feed axes feature linear and torque motors to ensure T-posi- tioning accuracy within 0.006 mm. A Kv factor of 10 and a jerk of 1,200 m/sec.³ enable high-precision micro movements. With low-weight planetary axes and the right workpiece geometry, this capability can reduce cycle time. With a spindle distance of 250 mm, feed axes accelerate as fast as 24 m/ sec.² to a rapid traverse of 120 m/min. Motor spindles can reach 25,000 rpm within 0.7 sec. Chip-to-chip time for a tool change is 1.75 sec. The double swiv- eling workpiece carrier enables loading one part while the machine cuts another. The robot's overhead mounting and ability to be configured for specific parts provides freedom of movement and room for other tasks, such as scanning. The loading module is fitted with aluminum support profiles for holding additional devices. The 7-kg robot can accommodate workpieces mea- suring up to 100 × 100 × 50 mm and ranging to 1.0 kg in mass. It can use multiple grippers to load and unload in parallel with machining time. For small batch sizes, manual loading can also take place. The vertical pallet storage unit can store up to 24 pallets measuring up to 600 × 400 mm. System runtime at 1 minute per every two workpieces is 9.6 hours. The pallet transport system employs a wear-free ball screw drive and an elevator-car approach to enable loading and unloading at optimum and consistent heights. | SW North America Inc. | South, Level 3, Booth 338556 VMC Design Keeps Heavy Cuts Stable Designed for heavy cutting applications, Toyoda Americas Corp.'s Stealth VB215 machining center uses the compa- ny's cast iron headstock and vibration damping technol- ogy. The bridge machine features a compact Z-axis ram construction to support the center's 6,000-rpm, geared- head spindle, contributing to stability during milling and drilling operations. Other machines from the company include a five- axis VMC for titanium machining, universal grinding machines with adjustable wheelheads, a multipurpose turning center with twin turrets and twin spindles, and a production gear manufacturing machine. The five- axis VMC has a 2-axis tilting head, high-torque A and B axes with gear-driven design, and hybrid box and linear guideway construction. The grinding machines have adjustable wheelheads for straight and angular applica- tions, 45-degree swivel increments to grind smaller- diameter journals, and reinforced bed designs. The multipurpose center is designed for process integration. It has twin upper T15 turrets, built-in twin spindles, a 2" bar capacity and 8" chucks. | Toyoda Americas Corp. | South, Level 3, Booth 338519

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