DA300

The DA300 provides an ideal blend of speed, precision and flexibility for multi-axis complex workpieces in the smallest of machine footprints. Inspired by the best design characteristics from both vertical and horizontal machining centres, the DA300 combines the structural rigidity and accuracy of a vertical centre with the high productivity and reliability of a horizontal centre, offering the best-of-both-worlds. It significantly reduces the part cycle times while achieving very accurate performance.

The DA300 is based on the half-bridge structure traditionally used in the Makino vertical machines. With the direct-drive (DD) motors designed for the A-axis and C-axis, the machine offers excellent dynamic motion control and a five-side access for production of complex parts in less setups. The double-side supported table is embedded in a highly rigid frame structure making the machine rigid but light, enabling increased dynamics, acceleration and maximum speeds without compromising on performance. The DD motors also bring the benefit of high-speed rotation, even with a maximum table load of 250 kg. Additionally, well-dimensioned 45 mm wide roller guides and core-cooled ball screws with 40 mm diameter increase the stability of the machine.

With Makino’s latest Professional 6 (PRO 6) controller, the DA300 is equipped with several intelligent functions to increase productivity of the machine. The controller was developed to meet customer needs for enhanced machining processes through improved safety, ease of operation, reliability and productivity.
 
It achieves these goals by reducing the collision risk, streamlining and facilitating operability, including many previously optional functions as standard features, and bettering machine performance. The controller has been designed for easy, intuitive operation via simplified menus and smartphone-like icons.
 
The new advanced motion control Geometric Intelligence (GI) functions reduce overall cycle time, especially in typical production components. GI Drilling enables the spindle and tool to arc from hole to hole instead of following a square path. This reduces non-cutting times in comparison to common hole-pattern drilling. On the other hand, GI Milling is designed to improve performance in 2-D milling. It lets the user define a corner-rounding tolerance on each milling path.
 
Other intelligent machine functions include Inertia Active Control (IAC) designed to further speed up machine motions based upon system dynamic attributes. The IAC gets feedback from the servomotors and sets the acceleration and deceleration of the specific pallet at the optimum level.
 
 

The importance of effective coolant management is often underestimated in vertical machining centres (VMC), even though it is an absolute necessity if a machine is intended for high productivity levels and consequently generates high volumes of chips per minute. Contrary to the conventional 5-axis trunnion type table setup, where there are two narrow troughs on each side of the trunnion for chip removal, the DA300 has a wide-open trunnion and a wide trough located beneath the table. This ensures that chips fall directly in to the trough. The coolant management system in the DA300 is outstanding. A generous flow of coolant from the overhead shower and terrace washing coolant system eliminates accumulation of chips and enables excellent evacuation.
 

The DA300 is ready for integration into automated production cells. The table (340 mm by 300 mm) has 5 pneumatic ports (hydraulic as option) which makes it ready for handling pallets, providing quick, efficient part exchange and maximizing machine utilization. It offers easy access to the table from the side so as not to interfere with front operation, and to accommodate different automation possibilities from standard zero-point clamping systems to direct part handling with hydraulic clamping.
 
All in all, this 5-axis VMC delivers an unmatched combination of high productivity, quality and operational safety combined with intuitive ease of use.