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For many machining operations, long chips are a problem. The stripes of coiled metal can wrap around the workpiece and the cutting tool and interfere with the proper operation of the machine tool. ETASIS, a Turkish producer of custom machine tools, wants to provide their customers with a solution that eliminates the long chip problem. These curly chips are especially problematic when lathing, but also can occur with other operations such as drilling and milling.


FANUC’s CNC provides a software application called the Servo Learning Oscillation Function. This function causes the tool to oscillate along the cutting direction. By applying Servo Learning Control, the oscillation is accomplished without compromising quality or accuracy.


The Servo Learning Oscillation function enhances the quality of the finished product. Significant labour savings are achieved by avoiding the need to clean off parts. For those customers who wish to use a robotic arm for machine tending, eliminating the long chip problem is crucial. FANUC’s software solution eliminates the need for chip-breaking equipment. ETASIS is very pleased with the results of this function.

About ETASIS Machine Tool

ETASIS has been producing CNC machines since 1990, and they are proud of their team’s ability to adapt to new technologies. All of their products are of their own design, and they make special machine tools for a variety of industrial sectors.

ETASIS produces custom machine tools for many applications, including high-technology end-users like automotive and aerospace. Long, coiled chips can cause many problems such as conveyor stoppages, substandard surface finishes, and reduced tool life.

Meliha Günaltin, General Manager at ETASIS, explains:

The FANUC Servo Learning Oscillation function increases the production quality of the machines we produce. In materials and processes with a high probability of chip wrapping, the chip formed cannot be removed and causes quality loss with time when the part is processed with traditional methods.

In mass production areas, the chip formed needs to be cleaned off the part, for continuing the next processes smoothly. This causes additional labour requirement and costs. In addition, a chip-free workpiece is inevitable for customers who want to implement a robotic automation system such as machine loading and unloading. In various tests with the FANUC Servo Learning Oscillation application, we eliminated the chip off the part.


Ms. Günaltin goes on to explain how they utilize the function:

After the suitable cutting conditions of the workpiece are determined, the specified conditions are entered into the setting instructions of the Servo Learning Oscillation application and the function is ensured to run smoothly. We carried out R&D studies to determine the optimum values for the chip-breaking function.

We also use it for drilling and milling machines along with lathes. The FANUC Servo Learning Oscillation application eliminates the need for chip breaker equipment and for additional labor. It provides us with high benefits in terms of cost and time. In addition, this function extends the tool life, providing a significant cost reduction and efficiency in production.

Günaltin concludes by describing their relationship with FANUC:

FANUC is our most important partner in developing new products and improving our existing ones. We have a long cooperation with them. We are very pleased to receive fast and solution-oriented service from FANUC, as well as technical support in different countries we serve. FANUC offers high product quality and extensive spare parts support for our machines. FANUC is our reliable partner.