B+W has incorporated the stiffness and power of its heavy-duty MCX range into the compact MCC models. In the case of the latest 800 mm (optionally 1,000 mm) pallet machine, the company says it has created a rigid and powerful metal-cutting centre for producing prismatic components weighing up to 2.5 tonnes (including the fixture).
The 4-axis machine, including C-axis rotary table, has twin pallets and a 1,400 by 1,200 by 1,400 or 1,600 mm working envelope, and a footprint of 8.8 by 3.5 by 3.8 m. MCC series models are also the first standard machines to enter series production at the company’s Reutlingen factory in southern Germany, which until now has built machining centres to customer order.
B+W’s MCC 800 can deliver 1,300 Nm of torque continuously if a 41 kW gear-driven spindle is chosen instead of a 30 kW/300 Nm motor spindle. There is a further alternative of a +45/-110° tilting spindle of identical power that adds a fifth CNC axis.
Spindle speed is up to 6,000 rpm, optionally 10,000 rpm, while an ISO50 tool interface can be specified instead of the standard HSK-A100. The tool changer, which has few moving parts, serves a tool magazine with 64 pockets that can be expanded to 320 on request.
Large diameter table and spindle bearings, widely spaced size linear roller guideways and twin ball-screw drives in the Y axis contribute to the machine’s stiffness, as does the ribbed, FEM-optimised cast-iron structure. Productivity is promoted by a cutting feed force of 17.5 kN and 7 m/s2 acceleration to 60 m/min rapids in the linear axes, which are fitted with linear scales for feeding positional data back to the Siemens Sinumerik 840D sl control.
The single-piece bed casting allows rapid installation and commissioning, either as a stand-alone machine or as part of a line. B+W integrates a high level of Industry 4.0 monitoring and networking capability into its machines, offering comprehensive data acquisition and communication.