In this web cast we examine an innovative new threading concept, CoroThread 266, with applications in oil and gas, mechanical, and aerospace industries. Learn how this new threading approach inhibits movement in the insert and improves both accuracy and indexability.
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Hello, and welcome to the Sandvik Coromant Webcast for our CoroThread 266 system.
CoroThread 266 is an innovative new threading concept that improves insert indexability and accuracy and eliminates insert movement during threading operations, thanks to our iLock technology.
Customers in the oil and gas, mechanical and aerospace industries can benefit greatly from the accuracy of the CoroThread 266, as well as any other customer who wants to improve his threading operations.
Let’s first take a look at the interface between the shim and the holder. The shim easily loads into the holder pocket and is held securely with a screw.
Now let’s take a look at the interface between the shim and the insert. The design makes insert indexing very easy because the grooves in the bottom of the insert interlock with the convex rail on the shim. Not only does this ensure that the insert is in the correct location every time, but it also provides repeatable accuracy with each threading pass.
Clearance between the insert and the holder in the CoroThread 266 combats the issue of insert movement and tool holder deformation, which extends the life of your tools and tool holders.
The excellent precision of the CoroThread 266 is hard to beat. You’ll enjoy better profile accuracy; improved surface finish; better edge indexing; reduced setup time; easier and more accurate insert mounting; longer insert and tool-holder life; and a reduction of passes.
In a field test, we used the 266 insert to compare our old holder system to the new 266 system. The results showed a 23 percent increase in tool life when using the new CoroThread 266 system.
In another field test, we compared the U-lock system to the CoroThread 266 system. The new 266 system yielded a 92 percent increase in tool life.
We offer three main geometries for the CoroThread 266. The all-round A-geometry is a great choice for all materials and provides good chip formation and edge security. The sharp-edged F-geometry provides a clean cut when working with sticky and hardening materials. It provides superior performance at low cutting speeds and reduces cutting forces and the risk of build-up on edges for a good finish. Finally, the C-geometry features a chip-breaking bump for consistent chip breaking, allowing for minimum supervision, and is ideal for low-carbon, low-alloy and easily machined stainless steel.
Here we compare the new C-geometry in the 266 system to our old U-lock 166 with a C-geometry. The new 266 system provides greater chip control and withstands higher cutting forces. A modified flank infeed provides optimal results.
In a customer test, we compared a U-Lock 166 insert without the C-geometry to a 266 system with a C-geometry. The combination of the C-geometry and the 266 system showed even greater results, with fewer passes, increased tool life and significantly better chip-breaking results, as demonstrated by the picture on this slide.
In addition to the three geometries, we offer a complete assortment of inserts for the system, including 3/8-inch, half-inch and 5/8-inch inserts, with pitch ranges from 32 threads per inch to three threads per inch. The two main grades are 1125 and 1135 and we also offer multi-point and single-point inserts.
The system comes with a variety of tool holder options to fit a wide variety of needs.
Thanks for taking the time to learn more about the CoroThread 266 system. For more information, call 1-800-SANDVIK.