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Technology & Solutions

Okuma's Green Technology

Supporting Decarbonization and Energy Savings for Factories

Decarbonization
and
Energy-Saving Solutions

Okuma will continue to contribute to the decarbonization of our customers' factories with various energy-saving technologies and
highly accurate machine tools.

Real solutions only Okuma can provide

1Reducing energy during machining
Intelligent Technology Thermo-Friendly Concept

Both stable accuracy and reduction of carbon dioxide emissions

The workpiece machining accuracy changes significantly due to machine ambient temperatures, heat generated from in-machine components and cutting. The idea behind Okuma's Thermo-Friendly Concept is simply “accepting” these temperature changes so that high accuracy can be achieved in normal factory environments without requiring special customer preparations. Maintaining excellent accuracy stability is possible without relying on excessive ambient temperature control from machine cooling systems and factory air conditioners.

Daily warm-ups, dimensional compensations 68→3 min Yearly: 0.2 t-CO2/unit Less

Shorter warm-up and
dimensional compensation times.

[LB3000 EX Ⅱ compared to previous models]

Temperature: ±2℃ ±5℃ Yearly: 41 t-CO2/unit Less

High accuracy stability even at 1/3 less air
conditioning electricity.

[Estimates: machine shop with 4 machines installed]

Column coolers: 3 0 units Yearly: 13 t-CO2/unit Less

Outstanding dimensional stability without machine coolers

[DCMC actual data: 8℃ ambient temperature change]

Power Regeneration System

Using regenerative power during deceleration eliminates energy waste Standard on spindles and feed axes of all models

Wasting no energy by regenerating decelerating power—previously discarded.

Power Regeneration System benefits
Machine without energy-saving tech→MB-5000HⅡ 17% Less
[Calculations]
Horizontal Machining Center MB-5000HⅡ 50% utilization (8 hr/da, 20 da/mo, 1 yr)
  • Workpiece: Aluminum casing
  • Average load: 30% rating
Calculated from measured regenerated power

ECO Hydraulics (option)

Highly efficient hydraulic power pack reduces power consumption

Conventional hydraulic unit
MB-4000H actual data:
840 W
ECO Hydraulics
25min-1
260W

[Pressurized]

Highly efficient hydraulic pump, Servomotor, Pressure sensor
2Stopping unnecessary equipment
ECO Idling Stop

Ensure accuracy and actively turn off unnecessary peripherals

All auxiliary equipment when not needed (most of factory power consumption), can be turned off.
The ECO Idling Stop button enables diligent idle stop operations even during machining and maintenance work.
The cooling system necessary for maintaining accuracy uses Thermo-Friendly Concept technology, and the machine itself decides when to cool and stop idling while maintaining high accuracy.
With ECO suite plus, the machine automatically detects the operating status, eliminating the need to push buttons while reducing carbon dioxide emission as much as possible without operator awareness.

ECO Idling Stop energy savings
MB-5000HⅡ (Power Regeneration)→MB-5000HⅡ (Power Regeneration + ECO Idling Stop) 14% Less
[Calculations]
Horizontal Machining Center MB-5000HⅡ 50% utilization (8 hr/da, 20 da/mo, 1 yr)
  • Assuming 50% of setup and standby time used ECO Idling Stop.
  • Workpiece: Aluminum casing
  • Average load: 30% rating
Calculated from measured regenerative power
Milling spindle cooling status monitored, Turning spindle cooling status monitored
ECO Operation (option)

Peripheral equipment runs only when needed

By using only the required peripherals (chip conveyor, mist collector), energy-saving operations that also maintain high productivity are possible.
ECO suite plus enables more detailed tuning of operations to thoroughly support carbon dioxide emission reduction activities that do not reduce productivity.

3Shortening cycle times
Cycle Time Reduction (easy setting)

Significantly shortens cycle times and reduces power consumption

Cycle times become much shorter by selecting the optimal parameter settings for the workpiece and machining operation all at once.

Previous machine→MB-5000HⅡ Cycle time 34% Less
[Measuring conditions]
Sample part program used to drill and tap dozens of holes on three sides of an aluminum die casting.
4Confirming and evaluating energy-saving efficiency

ECO suite plus

ECO Power Monitor

Evaluating energy savings and analyzing areas of reduced energy

Making it possible for the OSP control to analyze the operating status of each device.

  1. ① Check carbon dioxide emissions on the spot

    With ECO suite plus, you can also check the power consumption of each device.

    Check carbon dioxide emissions on the spot
    Check carbon dioxide emissions on the spot
  2. ② Simultaneously records operating status and carbon dioxide emissions

    With ECO suite plus, recording carbon dioxide emissions for each device, and data output is possible.

    Simultaneously records operating status and carbon dioxide emissions
  3. ③ Analyze carbon dioxide emissions and improve machine tool operation

    With ECO suite plus, not only the display on the machine but data analysis for each device is also possible on a PC, to see a more detailed carbon dioxide emission analysis.

    MCR-BⅢ at DS3 Energy Consumption
    Analyze carbon dioxide emissions and improve machine tool operation

Benefits of Okuma decarbonization and energy-saving technology

45% less carbon dioxide emissions
by using Power Regeneration, Thermo-Friendly Concept for cold starts, and ECO suite plus

45% less carbon dioxide emissions
[Calculations]
Horizontal Machining Center MB-5000HⅡ 50% utilization (8 hr/da, 20 da/mo, 1 yr)
  • Assuming 50% of setup and standby time with ECO Idling Stop.
  • Workpiece: Aluminum casing
  • Average load: 30% rating
  • Warm-up: 2 hr/da
Calculated from measured regenerative power