Bridge Mills handle large parts with complex geometries.
Press Release Summary:
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.
Original Press Release:
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.
