Bridge Mills handle large parts with complex geometries.
August 4, 2009 -
Available in 6 models, DCM Series offers table sizes from 106 x 397 to 126 x 319 in. that support up to 150,000 lb. Machines utilize 50 hp spindle motor that turns CAT DIN, Mas, Big-plus, or HSK tools at speeds up to 10,000 rpm. Able to face mill stainless steel at rate of 35.7 ipm and cast iron at 44.3 ipm, machines include 40-station ATC and Fanuc 31i-A control. Bed and column are structured to minimize vibration during heavy vertical and horizontal passes.
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Original Press release
Doosan Infracore American Corporation
2905 Shawnee Industrial W.
Suwanee, GA, 30024
USA
Doosan DCM for Large Parts with Complex Geometries
Doosan's family of DCM bridge mills combines machining-center technology for complex geometries, power for rapid feeds and heavy cuts, and the precision and rigidity for mirror finishes.
It all starts with generous tables. Within the six-member DCM family are tables of 106" x 397" to 126" x 319" that are able to support parts up to 150,000 lbs. Add to this a 50 Hp (30 min) spindle motor that turns CAT DIN, Mas, Big-plus or HSK tools at speeds up to 10,000 rpm. Results...the DCM face mills stainless steel at a rate of 35.7 in./min, and cast iron at 44.3 in/min.
And it machines with precision. The bed and column are uniquely structured to minimize vibration during heavy vertical and horizontal passes. Accurate compensation and a thermally symmetric design minimize thermal displacement. The table moves along four guideways, equalizing the load distribution to prevent deformation, while a roller-bearing pack assembly beneath the table and a slide bearing further absorb vibration. The crossrails with ultra-rigid, rectangular sliding faces support the loads generated by the saddle, rams and head attachments. In addition, an optional weight balancer continuously compensates for weight changes as metal is removed, while a W-axis Synchronous Control assures perfect parallelism between the machine table and its Y-axis movement. Both the weight balancer and the Synchronous Control are patent pending.
A 40-station ATC is standard; with 60, 90, or 120 stations optionally available. A single arm performs the changes for both the horizontal and vertical spindle. Various head attachments are available for machining angles, inclined surfaces, curved contours, and narrow or deep cuts. A linear shuttle AHC (automatic head changer) can be employed for full automation.
Controlling the system is the Fanuc 31i-A. Work coordinates can be set easily by touching the tool or test bar to the work piece. This option can also be used as an automatic measuring probe. A cutting load monitoring function detects worn or broken tools, and an alarm sounds when a tool's life is expended.
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