In grinding technology, the trend is still full-sequence machining. Especially with workpieces with complex geometries that need to be finished on grinding machines with high degrees of freedom, this reduces queue time and work-in-process inventory. At the same time, less re-chucking means more precision. High quality production parts and tools for milling, indexable inserts and step drills are all examples of this.
At AMB, HAAS Schleifmaschinen GmbH in Trossingen, Germany is presenting the new, compact all-rounder that completes its machine series: Multigrind® CU. To be discovered till tomorrow in Stuttgart.
New generation of machines
While the largest machine in the HAAS series, Multigrind® CB, can accommodate grinding wheels with diameters of up to 300 mm and pro-cess workpieces with diameters of 340 mm to 500 mm, the medium-sized HAAS machine, Multigrind® CA, was engineered for grinding wheels of up to 250 mm and workpieces of up to 260 mm. Multigrind® CU accommodates wheels of up to 225 mm and workpieces of up to 180 mm.
CU takes up half the space of its predecessor
The new CU’s width is 50 mm less than its predecessor, the AF machine. Since the coolant system and its two large tanks are integrated into the machine bed, the new model requires less than half the space of the old AF. The robot function was external to the machine in the past, but the HAAS developers have successfully integrated it into the CU. A masterful solution to customers’ need for compactness.
The compact design also required a new axis concept, so the developers came up with a special solution. “At HAAS, we don’t focus on making or buying what we need cheaper,” said Hans-Dieter Braun to explain the HAAS philosophy. As the head of Development and Engineering, he is primarily responsible for developing the new machine. “We develop intelligent concepts that allow us to save on axes by means of multiple axis configuration without any negative impact on performance or functionali-ty, for example,” he added. The new machine’s axis arrangement follows the classical gantry principle, in which the X-, Y- and Z-axes are positioned at the top the Y-axis running along the side of the machine bed. Both the A-axis for rotating the workpiece and the machine table are attached to the C-axis. The C-axis also rotates the circular tool magazine, which is installed under the table. The part gripper that can load the machine from four integrated pallets is installed on the Z-axis so that it can travel in the X, Y and Z directions without any additional axes.
HAAS Schleifmaschinen GmbH plans to ship the first Multigrind® CU machines during the first six months of 2015.
At AMB, the HAAS booth in Hall 8, B71 will feature Multigrind® CU in the process of manufacturing an indexable insert. The “little sister” will demonstrate how universally applicable, highly flexible machines can contribute to boosting customer performance.
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