Thermo-Friendly Concept Manageable Deformation—Accurately Controlled

MOVIE

For superb accuracies in“normal” manufacturing environments

Machining accuracy of the workpiece changes signi‡cantly due to ambient temperatures around the machine, heat generated by the machine, and heat generated in machining.
The Thermo-Friendly Concept is the unique concept of “accepting” these temperature changes so that high accuracy can be achieved in normal factory environments with no special measures by the user.

Integrated machine design and control technology

The Thermo-Friendly Concept plays a principal role in our machine design. With simple machine designs and construction that equalize ambient temperatures, deformation is predictable, and complex torsion or tilting is controlled.
Moreover, Highly Accurate Compensation Technology (Okuma control [OSP] award winning innovation) effectively responds to deformation caused by changes in room temperature, frequent spindle speed changes, and non-coolant cutting.
With the Thermo-Friendly Concept (Manageable Deformation—Accurately Controlled), Okuma products provide unrivaled dimensional stability.

Simplified machine construction / Machine design  that equalize

“Manageable deformation”—structural designing for controlled machine expansion/contraction(predictable directions), with heat transmitted evenly.

Thermally symmetric structure
Box-build structure
Thermally balanced structure

Extremely accurate deformation control

Thermo Active Stabilizer — Spindle (TAS-S)

Thermal deformation of the spindle changes greatly both when the spindle is turning and when it is stopped, affecting machining accuracy.
TAS-S considers not only spindle temperature information but also spindle rotation, spindle speed changes, and spindle stoppage.
Thermal deformation of the spindle is accurately controlled even when spindle speed changes frequently.

MB-46VA vertical machining center with 15,000 min-1 spindle

Thermo Active Stabilizer — Construction (TAS-C)

When machining under changing ambient temperatures, machining dimensional changes are affected by expanding/contracting machine components as well as workpiece position with respect to the table in machining centers and workpiece size in lathes.
TAS-C, based on machine thermal characteristics, with appropriately placed temperature sensors and feed axis position data, will predict and accurately control thermal deformation in machine construction when ambient temperatures change.

Outline of thermal deformation control (TAS-S, TAS-C)
 

Benefits

Fewer tool  compensation checks

“Superb dimensional stability” means fewer compensation checks are required after the initial morning setup, regardless of shop temperature changes or afternoon/evening stoppages.

Dimensional accuracy improved with high-volume machining

By combining thermal deformation control with machining position, workpiece dimensional accuracy is improved even when a large number of workpieces are loaded.

Enables phenomenal dimensional stability

Models on which the Thermo-Friendly Concept is available

Lathes / Grinders
Multitasking machines
Machining centers

4 Award