The machine structure has been completely reviewed with great attention not only to technological innovation but also to design. It was conceived with a modular approach in order expand the possibility of customization but also to soon complement other models of the same series currently in the design phase.

It is therefore suitable for every field of application, from the automotive sector to the wind sector, power transmission, agricultural, industrial, etc…

The new EVO 400 is able to accommodate pieces with a maximum diameter of 500 mm, nominal module 8-10 with a work hobbing length of 600 mm, allowing a wide range of shapes to be machined, including shafts, thus offering flexibility also to subcontractors performing a frequent changeover.

At the same time, it proves to be suitable also for manufacturers of mass-productions, due to the possibility, for instance, of inserting the optional two-position ring loader system equipped with anticollision device, for fast loading

Uncompromised stiffness, reactivity and precision

Characterized by a compact design, easily handled and quickly installed, the new EVO 400 CNC hobbing machine offers high stiffness, reactivity and precision.

The high stiffness is obtained through the use of preloaded re-circulating roller guides and to the special lock of the shifting carriage, with high-load backlash-free deformation, positioned under the hobbing axis. The reactivity and the gain of the hobbing rotation axis are instead obtained by using a high torque motor integral with the spindle, equipped with excellent-precision Heidenhain ring absolute encoder directly keyed on the same to maximize the accuracy. Finally, the thermal stabilization, essential to assure the process repeatability, derives from the coolant oil recirculation, purposely studied, inside the structure and by the automatic compensation system that acts through thermal probes

Energy Efficiency for a greener future

Aware of the importance of approaching a new paradigm of sustainable growth, Comur has invested heavily in high energy efficiency components by inserting the latest model of HFK compact hydraulic power unit with inverter, which optimizes consumption and allows you to set the parameters, and a chiller ERP 2021 compliant with new remote control and BMS system integration.

With this hydraulic power unit, a work cycle requires only 30L with an oil saving of approximately 85% compared to normal gear cutting machines, with consequent economic savings and greater sustainability.

COMUR Special features

The most interesting feature of the new line is certainly asymmetric hobbing head. It allows carrying out hobbing machining in presence of a very large footprint in terms of diameter, until now impossible on machines of this typology. This peculiarity enables the implementation of hobbing with very small external diameter, close to overall dimensions that can reach 600 mm of diameter. It is also worth highlighting the possibility of designing workpiece clamping equipment with much bigger diameters without collision risks and, especially, without needing to unload and to weaken the equipment, so notably increasing the process rigidity. It is possible to carry out this hobbing by exploiting the whole shifting stroke of 300 mm

The added-value of the digital twin in production

The machine integrates the Sinumerik One CNC, the last technological frontier by Siemens, which enriches the new EVO 400 CNC with interesting functions, such as the creation of a digital twin to improve the corporate efficiency and to optimize industrial processes. Moreover, it allows the simulation of the piece programming and of the machine operation, assuring a preventive collision control.

The user-friendly retooling is assured by the Cnc Sinumerik One, with an interface that has been fully customized and simplified to make it intuitive.

Comur, in line with its corporate policy, includes on the machine both standard machining software and special part programs, in-house developed, without additional costs.