Flexible machining geniuses thanks to double Y-axis and identical part components

Power, stability and µm-precision in heavy-duty machining –

with the models of the Miyano BNE series, Citizen Machinery Europe GmbH from Esslingen has always set standards, also in terms of speed, flexibility and economy. Now, the turning machine specialist is stepping it up a notch and making the robust, high-torque success models BNE-51MYY and BNE65MYY even more productive with, among other things, two Y-axes and identical components. The double Y-axis – each on the upper and lower 12-station turret – offers significantly greater flexibility in tool selection and makes it possible to better divide up the processes. The result: short cycle times for higher productivity. Thanks to the touch control of the new HMI interface, operation is also child’s play.

Due to their great stability and machining accuracy, even of difficult-to-cut materials in heavy-duty machining, as well as their long, low-maintenance machine service life, Miyano short-turning machines are very successful in industrial production. With the new models BNE-51MYY and BNE-65MYY, which have maximum machining diameters of 51 mm and 65 mm, respectively
with a machining length of up to 195 mm, Citizen has significantly improved performance. Both the upper and lower turrets are now equipped with a Y-axis. Both are equally powerful and
and, with their 12 stations, offer significantly more flexibility in tooling tooling, which in turn greatly optimises the process layout. optimised.

Improved kinematics concept

The two precision lathes are designed for front- and machining with main and counter spindles. counter spindle. More performance and flexibility is provided by the concept of the common part components. The two 12-station turrets are absolutely equivalent in terms of the stations – and the in terms of tool assignment and drive power. power. The traverse paths of the two turrets in the turrets in the X and Y axes are identical.

Thanks to the principle of identical components, the spindles of the The spindles of the main and counter spindles are also identical in terms of clamping size, power and mounting or feed-through. This means that the user can machine material up to a maximum of 65 mm (BNE65MYY) without starting, and this also applies to the pick-up spindle. Thanks to its own X-axis, this spindle eccentric gripping or turning, among other things.

The consistently high flexibility in the working area is particularly in simultaneous machining, since thanks to the overlay control up to three tools can be engaged at the same time. simultaneously. In addition with the Y-axes on the the turrets, the cycle times are reduced considerably depending on the considerably depending on the machining operation.

Oliver Loth, Sales Manager Germany at Citizen Machinery Europe GmbH: “Thanks to this kinematic concept, the machining flexibility knows machining flexibility knows almost no limits. And this versatility This versatility is further enhanced by special holders, such as such as triple or quadruple holders to increase the number of tools. number of tools. This significantly increases the machining spectrum.”

Citizen places great emphasis on system stability and vibration prevention. For example, all the main components of the machines, which weigh around eight tonnes, are mounted on a continuous, stable cast bed. The slide structure is designed in such a way
to ensure problem-free chip removal.

All slides, with the exception of the X3 axis, are equipped with ground or hand-scraped rectangular flat guides. equipped. This ensures maximum stability, excellent maximum stability, excellent running smoothness and excellent vibration-damping properties are achieved. This in turn has a positive effect on the entire machining process and benefits the tool life of the cutting tools. of the cutting tools.

The machine enclosure has been completely redesigned and now offers a large window for excellent visibility into the machining area. The machines are equipped with an ergonomic control panel. Thus, thanks to the control panel with HMI surface and 15″ touch panel, operation and use are considerably simplified and improved for the user. The same arrangement of controls is already found in several Citizen machine models.

The BNE-51MYY and BNE-65MYY models use the latest Mitsubishi control technology. A particular advantage is that users of Citizen machines who already work with FANUC controls in the company
Thanks to the same user interface, users of Citizen machines who are already working with FANUC controls in the company will also find their way around the Mitsubishi environment immediately. For example, 3-line programming for superimposed operation (superimposed mode) for the simultaneous use of a maximum of three tools.

A further advantage is the consistency of the tool holders and tool holders for different Miyano machines. Thus, for the BNE-51MYY and BNE-65MYY tool holders of the BND and BNJ models and vice versa.
vice versa.

Oliver Loth: “The two turrets equipped with Y-axis and the mechanical construction of the main spindle (in spindle (in conjunction with the counter-spindle that can additionally be counter spindle) enable flexible high-performance machining. machining with up to three tools at the same time. with up to three tools simultaneously. With this
kinematic concept and the freedom it offers in machining, component machining, component manufacturers can achieve optimum workpiece workpiece times or optimum machining times.”

For more information, please visit: https://www.citizen.de/aktuelles/presse