TAKAMAZRYU-GI“Ultrasonic vibration cutting” can shred the chips generated during turningand drilling.
We verified this function on TAKAMAZ products.

vol.24

About“Ultrasonic Vibration Cutting (the Oscillation Function)”
One of the unavoidable aspects of turning work is that chips become entangled on the tool.
The ways of dealing with this include changing the cutting conditions or chip breaker, and using ahigh-pressure coolant system, but this time, we are introducing “ultrasonic vibration cutting”
by making use of one of FANUC’s optional functions called “Servo Learning Oscillation”.

■ What is Ultrasonic Vibration Cutting■ Issues and Points to Note to Maintain

It is a cutting technique in which the tool is slightly
oscillated along the feed axis direction in synchronization withthe rotation of the workpiece, thereby making the cutting edge
break contact and thus shred chips. (Fig. 1)
On TAKAMAZ products, ultrasonic vibration cutting is achievedby using the oscillation function, which serves to shred chips
not just in turning but in drilling operations too.
Ultrasonic vibration cutting can be performed by adding asimple program before and after the target cutting section, whichmeans that the program and cutting conditions can also be changed
easily.
It addresses concerns about machine stoppages, tool tip
breakage and generation of defectives, and greatly helps toimprove the utilization rate and quality stability.

●Aﬀects on cutting accuracy(the Oscillation Function)?

Regular cutting

Turning using Servo
Learning Oscillation

Tool advances in one direction

Tool vibrates

Shredded chips

Entangled chips[Fig. 1] Diﬀerence Between Regular Cutting and Ultrasonic Vibration Cutting* Taken from FANUCʼs website■ Comparison of Chip Form and Surface Roughness
If we compare the chip forms in regular cutting and ultrasonicvibration cutting (Fig. 2), we see that with regular cutting they
are long, while with ultrasonic vibration cutting they are shredded.
As for the comparison of surface roughness (Fig. 3), there is adifference of approximately 5 μm, with a value of Rz 9.96 μm for
ultrasonic vibration cutting against Rz 4.47 μm for regularcutting. There is no change in the cycle time as a result of using
ultrasonic vibration cutting.

[Fig. 2] Comparison of Chip Form and Surface Roughness
Chips from regular cutting

Chips from ultrasonic vibration cutting

Stable Quality

It may not be suitable for cutting with demanding dimensional
tolerance and surface roughness requirements.

●Speciﬁcation method
The oscillation function can only be specified for one feed
axis.For cutting involving moving two axes simultaneously (e.g.
taper turning), the vibration will take place on one specified
axis only, either the X axis or Z axis.Vibration will not takeplace with rapid traverse commands or thread cutting commands.

●Level of impact on the machine
The impact of using this function will differ depending on how
the machine is operated, but please be aware that there is a risk
it could shorten the life of the machine since it applies loads
to slides, ball screws, support bearings and other components.

●Eﬃcacy of ultrasonic vibration cutting
In ultrasonic vibration cutting, the tracking ability of theservo axis motors and slides is important, so it is less effective on large-sized models and when high spindle speeds areused.Also note that backlash adjustment and other management isnecessary.

●Compatible models/controllers
The function can be used with FANUC 0i-TF PLUS controllers.
(Charged-for option)It can also be added as an option on existingmachines.The only permissible modifications are changes to thecontrol software.

●Compatible TAKAMAZ models
・XT-6/XT-6M [6-inch]
・XT-8M [8-inch]

・XT-8 [8-inch]

・XT-8MY [8-inch]■ Summary
We introduced a special cutting technique called “ultrasonicvibration cutting” that resolves chip processing issues.We willcontinue our efforts to expand the range of models that cansupport the technique so that we can satisfy more customer
needs.For more information on the method of use and machine
specifications, please contact your local distributor.

Material: S45C

Finishing allowance: 0.2 mm
Surface speed: 250 m/min
Feed: 0.1 mm/rev[Fig. 3] Comparison ofSurface Roughness

Contact: 076-274-1402
Technical Sales & Cutting Division, Sales Affairs Department

Ultrasonic vibration cutting area

Rz9.96μm

Click here for TAKAMAZ RYU-GI Vol.1-23!!
Rz4.47μm

5T news

Regular cutting area