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High Performance and Affordability in VMC

June 21, 2012
Hyundai WIA introduced a new series of CNC vertical machining centers developed for high performance and affordability. The F400VM (X-axis, 31 in., Y-axis, 18 in. and Z-axis, 20 in.) and F500VM (X-axis, 43 in., Y-axis, 22 in.

Hyundai WIA introduced a new series of CNC vertical machining centers developed for high performance and affordability. The F400VM (X-axis, 31 in., Y-axis, 18 in. and Z-axis, 20 in.) and F500VM (X-axis, 43 in., Y-axis, 22 in. and Z-axis, 20 in.) do not require machine shops to sacrifice performance for price, Hyundai WIA stated: its new Value Master range have standard features that include: a 30-tool swing-arm tool changer, through-spindle coolant, Big Plus tooling,-and rigid tapping capability, as well as the largest Y-axis (1,100 × 550 mm) among comparable machines.

Hyundai WIA’s new Value Master series of CNC vertical machining centers has two variants. The F400VM has an X-axis, 31 in., Y-axis, 18 in. and Z-axis, 20 in. All models have a 30-tool swing-arm tool changer, through-spindle coolant, Big Plus tooling,-and rigid tapping capability, as well as the largest Y-axis (1,100 × 550 mm) available in the machine class.Bed structure — The bed, column, and saddle of Hyundai WIA’s Value Master Series are designed using finite element analysis (FEA) to ensure powerful cutting and agility. They are cast in meehanite iron to minimize deformation when performing heavy-duty cuts. The rigid bed is designed to absorb vibration for stable machining. In order to eliminate thermal growth during machining, all axes are driven by high precision double-nut ballscrews.

The “double pretension” design enhances positioning and repeatability with virtually no thermal growth. All ballscrews are connected directly to the servo drive motors without gears or belts, eliminating backlash. Rapid, high-speed axis movement is achieved by the use of linear motion guideways in all three axes. This reduces non-cutting time and decreases machining time for greater productivity. Rapid traverse: 36 m/min in X- and Y-axis and 30 m/min in Z-axis.

Main spindle — The Value Master can be configured with an 8,000-rpm spindle for taking deep cuts; or with a 12,000-rpm spindle for high-speed precision applications. Ultra precision angular bearings provide high-speed accel/decel for smooth machining at high RPMs. The main spindle delivers minimal noise and vibration even at the highest cutting speeds, guaranteeing stable machining and minimizing thermal transmission to the main spindle.

The Hyundai WIA Value Master series F500VM has an X-axis, 43 in., Y-axis, 22 in. and Z-axis, 20 in.

The standard Big Plus spindle system (BBT #40) provides dual contact between the spindle face and the flange face of the tool holder. This increases tool rigidity, reduces run outs and adds significant productivity to any machining applications. Spindle motor is 15 hp with spindle torque rated at 95/75 Nm. The Big Plus spindle speeds material removal rates, increases accuracy, and improves rigidity. It guarantees stability when run at high spindle speeds for high RPM precision machining.

Standard through-spindle coolant — Hyundai WIA made through-spindle coolant standard for the Value Master series. It noted this feature is particularly useful for deep-hole drilling where it’s necessary to keep chip flow clear of the cutting surface. Through-spindle coolant also helps to increase tool life and decrease cycle time.

ATC and magazine — Hyundai WIA’s Value Master VMC’s are outfitted with 30-tool, side-mount swing arm type tool changers. This technology offers optimal performance with impressive tool change times of 1.3 sec tool-to-tool on the F400VM and 1.5 sec tool-to-tool on the F500VM. With a capacity of 30 tools (plus one in the spindle) setup time is reduced and run times can be made longer, especially if loaded with redundant tools.

The 30-tool swing arm automatic tool changer and magazine are separated by a shutter system that closes during machining, thus keeping chips and fluids clear of the ATC and magazine. When a tool change is required, machining stops, the shutter opens, the ATC exchanges old tool for new, the shutter door then closes and machining begins again.
• Number of tools: 24 (30 optional).
• Maximum tool diameter — OD: 76/150 mm (F400VM); 90/150 mm (F500VM).
• Tool selection method: Random.
• Tool weight: 8 kg.
• Tool length: 300 mm.

Control — The all new Value Master Series is easy to program and operate with its start-of-the-art Fanuc i-Series CNC control featuring a 10.4-in. color LCD with Manual Guide i. As the industry’s most popular control, Fanuc offers compatibility and bullet proof reliability. The new Value Master Series from Hyundai WIA is ideal for small to medium sized job shops, yet capable enough to handle high production environments that run 24/7. By bundling so many high-performance features in a machine, there’s nothing to sacrifice or compromise. In fact, it may just re-define the term “value” for all machining centers.

About the Author

Robert Brooks | Content Director

Robert Brooks has been a business-to-business reporter, writer, editor, and columnist for more than 20 years, specializing in the primary metal and basic manufacturing industries. His work has covered a wide range of topics, including process technology, resource development, material selection, product design, workforce development, and industrial market strategies, among others. Currently, he specializes in subjects related to metal component and product design, development, and manufacturing — including castings, forgings, machined parts, and fabrications.

Brooks is a graduate of Kenyon College (B.A. English, Political Science) and Emory University (M.A. English.)