Oscillation Cutting for Threading | Solution for ST52

Oscillation Cutting for Threading in ST52

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Optimise threading processes and prevent the formation of swarf bird's nests in materials that are difficult to cut and prone to swarf, such as ST52. Discover how oscillation cutting for threading improves automation and efficiency.

In this video we show how to solve a common problem when machining ST52 material: the generation of long, difficult-to-break swarf.

The part is an adaptor used to connect the drawbar of our CMZ lathes to the chuck, allowing the jaws to open and close. Without controlled swarf breakage, automation via Gantry Loader becomes difficult. Thanks to oscillation cutting for threading, we eliminate swarf bird's nests and keep production flowing.

What is oscillation cutting for threading?

Oscillation cutting for threading (OCT) is a machining function that uses sinusoidal oscillation of a servo axis to facilitate swarf breakage during threading.

This technique lets you retain the G76 threading cycle, avoiding the complex programming required by other CAM solutions or by those from tool manufacturers.

How does oscillation cutting for threading (OCT) work?

While the X-axis oscillates in the cutting direction, the tool movement is synchronised with the spindle rotation. At this point an air cut occurs, causing the swarf to break in a controlled manner.

Therefore, the cycle combines two types of pass:

  • Oscillating pass along the X-axis.
  • Straight pass: the tool encounters these material-free zones and the swarf breaks in a controlled manner.

Why is swarf build-up problematic when threading on a CNC lathe?

When swarf does not break during turning, grooving or threading, it forms tangles that:

  • They interfere with loading, unloading and transfer of the workpiece.
  • They can cause tool breakage.

Avoiding this problem is essential, especially in automated processes.

How is oscillation cutting programmed for threading?

It's very simple: just enable the option with a G-code before the threading cycle and disable it afterwards. You can use the ISO G76 cycle.

What is the difference between oscillation cutting for threading and other chip-breaking solutions for threading?

  • Oscillation cutting for threading: allows you to use the standard G76 cycle without additional programming.
  • Other solutions (CAM or tooling): require complex toolpaths to generate "air cutting", increasing the difficulty and the risk of errors.

Advantages and considerations of oscillation cutting for threading

Advantages:

  • Controlled chip breaking in difficult materials.
  • Safe automation via Gantry Loader.
  • Retains the standard G76 cycle.

Considerations:

  • The number of passes doubles, but stoppages due to long swarf are eliminated.

With oscillation cutting for threading, CNC turning operations reach a higher level of efficiency, safety and automation. In our video you can see how this technique enables machining ST52 without swarf issues, optimising time and resources in your workshop.

In addition, download our technical document with programming tips to make the most of this functionality.

Discover all the programming tips with this free downloadable

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Additional information

Do you need help with an application?

Our applications department can analyse in detail the process to be carried out and offer you a part study helping you to reduce cycle times.

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