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January 2023

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Threading Software Module for Controlled Chip Breaking

Sandvik Coromant's OptiThreading software module for thread turning helps overcome the risk of chip jams and associated downtime.

Sandvik Coromant offers a machining method that enables controlled chip breaking in thread turning applications. "Launched within the existing CoroPlus Tool Path software, OptiThreading is a software module that will help manufacturers overcome one of the most significant issues within thread turning-the risk of chip jams and their associated downtime," said a Sandvik spokesperson.

CoroPlus Tool Path software offers programming support for external and internal thread turning operations. The software generates NC codes based on cutting data parameters to secure the correct number of passes with evenly distributed cutting forces for optimal productivity, tool life and process security. Now, to enhance the software further, Sandvik Coromant has introduced a new module.

A common problem in thread turning is that chips coil around robots, chucks, tools and components. The chips can also get caught in conveyors, causing damage and equipment downtime. Successful chip control is the key to good component quality when thread turning.

OptiThreading has been designed with these challenges in mind. The module is available as part of a subscription to the CoroPlus Tool Path and is developed specifically for CoroThread 266 tools and inserts.

Using the method and software, manufacturers can fully optimize their thread turning operations. As part of the solution, CoroPlus Tool Path helps users develop optimized OptiThreading tool paths that specifically overcome the challenge of chip control. This is achieved by offering tool paths that deliver controlled, oscillating movements for interrupted cuts that go in and out of the cut on all passes except the last one.

"Supporting this cutting method delivers multiple benefits. Using OptiThreading eliminates long chips that damage a component's surface and interfere with the cutting zone, improving component quality," said the spokesperson. "It also results in less manual work to remove long chips jamming the tool, the component or the chip conveyor, resulting in fewer unplanned machine stops. OptiThreading also makes it possible to increase cutting speeds for shorter cycle times and improved productivity."

There are several reasons why OptiThreading and the CoroThread 266 are well-matched threading partners. OptiThreading creates high cutting forces and therefore needs a tool that can withstand them. The CoroThread 266 has an iLock interface that offers stability for insert indexing, making it capable of handling extreme forces. The tool is also available in a wide variety of assortments, with a selection of grades and geometries that cover most materials and applications. "Together, the software and hardware solutions deliver secure, precise threading which is not hampered by poor chip control."

"OptiThreading solves the biggest issue within thread turning, which is chip control," explained Hampus Jemt, Product Manager at Sandvik Coromant. "With CoroPlus Tool Path, we were already offering software for optimized turning, as well as a robust tooling solution in the form of CoroThread 266. Now, with OptiThreading, we are able to help customers overcome one of their biggest challenges when thread turning."

For more information contact:

Sandvik Machining Solution USA LLC

dba Sandvik Coromant

295 Maple Lane

Mebane, NC 27302


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