Multitasking Turning Center Is Four Machines In One

Hyundai WIA America Corporation (Carlstadt, NJ) offers its highest level of turning technology, the LM2500TTSY, with upper and lower turrets, Y-axes and twin spindles. The LM2500TTSY is really four machines in one — two lathes and two mills featuring high power built-in spindle motors and upper and lower turrets for high productivity. Precise synchronized facing twin spindles reduce idle time and BMT-type turrets guarantee accuracy and power.

The challenge today is for shops of all sizes to machine as many part features as possible in a single setup on a single machine. Central to accomplishing this is a machine that can do multiple operations (milling and turning) in a single set up, which the LM2500TTSY accomplishes with ease.

Benefits offered by this machine include compressing lead times from days to hours and reducing lot sizes with no cost penalty — lots as small as one piece can be done efficiently and cost-effectively. The LM2500TTSY also slashes non-value added time — fewer fixtures, tools and far less labor. Further, it also improves part accuracy by reducing tolerance stack ups between multiple fixturings.

Finally, the LM2500TTSY reduces shop burden — fewer machine tools, reduced floor space and more cost effective use of utilities. You can also run untended — one operator can run several machines, or you can run an entire third shift untended — which increases cutting time without the attendant labor costs.

The LM2500TTSY Series features a 45 deg slant bed design which was developed using finite element analysis (FEA) to ensure a stable platform for powerful, precise cutting capabilities. In order to eliminate thermal growth and increase accuracy, all axes are driven by high precision double-nut ballscrews. The pretensioned and double anchored design provides outstanding positioning and repeatability with virtually no thermal growth.

Rapid high-speed axis movement is achieved by the use of linear motion guide ways in the Z axis, complimented by box guide ways in the X- and Y-axes, for added rigidity. This unique combination reduces non-cutting time and decreases machining time for greater productivity. Rapid traverse: X1/X2 axes, 24/24 m/min (945 ipm); Z1/Z2 axes, 24/24 m/min (945 ipm); Y-axis, 12 m/min (472 ipm).

The upper turret on the TTSY configured machines utilize a wedge-type Y-axis which permits machining of complex parts in a single chucking. With a Y-axis travel of ±50 mm (100 mm [3.94 in] total), a wide range of work pieces can be machined. The LM2500TTSY utilizes built-in spindle motors for both the left and right with identical specifications for high speed precision machining in either direction.

Each spindle features ultra precision angular bearings to provide high-speed accel/decel as well as smooth machining with minimal noise and vibration at high rpms, even at the highest rotational speeds.

Spindle temperature is further controlled by the use of a spindle chiller, which ensures constant oil temperature and minimizes growth in the spindle caused by heat distortion. Left and right spindle specifications are equal 4000 rpm, 35/20 hp, with an A2-8 spindle nose.  www.hyundai-wiamachine.com