Okuma’s SERVONAVI dramatically improves accuracy and cycle times

Okuma introduces their high-precision application SERVONAVI as part of their line of Intelligent Technology features. Available on almost all of the manufacturer’s machining centres, lathes and multitasking machines, the application is able to increase surface quality, reduce production time and to undo the effects of wear and tear in older machines.

When it comes to machining heavy parts, consistent performance is key. As a comprehensive manufacturer of machine tools and CNC controls, Okuma is able to create applications specifically designed to achieve high-quality results regardless of machining conditions. SERVONAVI is able to provide maximum accuracy and higher efficiency by automatically adjusting the machine’s settings to the conditions of each individual job – in real time.

Optimised acceleration speeds

By default, table feed acceleration parameters are set to suit the maximum table load, which can slow down acceleration. SERVONAVI’s Work Weight Auto Setting estimates and automatically adjusts to the actual weight of the workpiece and the fixture. By automatically setting servo parameters to the optimum values, the technology is able to achieve faster acceleration speeds and shorter cycle times without compromising machining accuracy.

Servonavi features

Maximised precision

After years of use, slide resistance in machine tools can change, resulting in crease marks at motion reversals. SERVONAVI’s Reversal Spike Auto Adjustment compensates for slide load variations that diverge from the ideal servo control settings. Thus, the system effectively counteracts the effects of wear and tear in order to ensure the highest possible level of surface quality.

Minimised vibration

Excessive vibration that can occur after years of operating a machine tool is more than a nuisance – it can also decrease surface quality. SERVONAVI’s Vibration Auto Adjustment automatically adapts to the changed conditions to effectively eliminate noise and vibration while machining. By reducing vibrations the feature also enhances the machine’s longevity.

Before vibration auto adjustment

Before vibration auto adjustment

After vibration auto adjustment

After vibration auto adjustment

Reduced positioning error

When chucks or workpieces are changed, inertia (inertial mass) also changes, sometimes resulting in greater positioning error. Auto Inertia Setting estimates chuck and workpiece inertia from acceleration torque and automatically changes servo parameter settings to the optimum values. This reduces positioning error and helps to prevent oscillation (hunting) during C-axis electromechanical coupling so that high accuracy and stable movement can be maintained.

SERVONAVI is standard on most machining centres, lathes and multitasking machines equipped with Okuma’s OSP-P300.

About Okuma

Okuma Europe GmbH is the Germany-based sales and service affiliate of Okuma Corporation, a world leader in CNC (computer numeric control) machine tools, founded in 1898 in Nagoya, Japan. The company is the industry’s only single-source provider, with the CNC machine, drive, motors, encoders, spindle and CNC control all manufactured by Okuma. Okuma’s innovative and reliable technology, paired with comprehensive, localised service protection, allows users to run continuously with confidence – maximising profitability.  Along with its industry-leading distribution network, Okuma facilitates quality, productivity and efficiency, empowering the customer and enabling competitive advantage in today’s demanding manufacturing environment.

Source Okuma

More Information

Visit the official Okuma website.