More operational smoothness, more thread

Multifunctional tools are the trend, especially when it comes to thread production. Walter is constantly optimising its tool range in this direction through innovations or upgrades. The most recent upgrade concerns the solid carbide thread mill with countersink from the specialist brand Walter Prototyp for the thread range M3 to M16. 

In a field test with stainless steel 1.4301, the new variant of solid carbide thread mill nearly achieved twice the tool life when compared with tools from the old generation. In figures: 1900/800 threads. The test was conducted using an M8 size thread milling cutter. This advancement is based on several new details: an improved, extremely fine-grained carbide substrate ensures high resistance to wear. The helix angle has been enlarged to 27 degrees (previously 10 degrees), which is good for soft cutting. A shortened thread run-out prevents swarf from getting into and damaging the adaptor. This also allows for a shorter clamping system, which creates greater stability. Taken together, these characteristics lead to greater operational smoothness and thereby to less tool wear, both of which are conditions for high tool life. An excellent thread quality is a welcome side effect of this. The maximum cutting speed is nearly 90m/min, and this value is still possible with heat treatable steel 42CrMo4, for example.
 The countersink is produced before the milling of the threads is 90 degrees in the new version (previously 60 degrees). This value has been put into practice, and it guarantees an almost burr-free thread start. 

 The internal coolant supply in a thread up to a size of M4 (previously up to M6) is also new. The thread milling cutters are flexible when it comes to the coolant. Emulsion or air blast can be used. The suitability for the minimum quantity lubrication (internal or external) is also covered. The tools can be used universally for materials up to 48 HRC. The maximum thread depth is 2xD.