Tooling expert Walter GB has introduced a range of new boring tools with tangentially-arranged indexable inserts to meet demands prevalent in the automotive sector for producing bores – roughing and finishing – in multiple steps, at higher feed rates and requiring better surface finishes than produced by conventional tools, even in applications without good chip clearance.
In addition, reduced chatter is obtained by combining an extremely stable tool body with separate indexable insert geometries that feature a second clearance angle – to reduce the effective clearance angle, which is usually high for tangential tools.
Boring applications of four times diameter can be achieved, and small diameters (from 24 mm) can be machined with three teeth.
The square-shaped inserts can be installed at any approach angle; a face chamfer (wiper) also works at 72° and 90°, which guides the tool and helps minimise noise. The inserts are also very cost-effective, with four plus four cutting edges.
A wide range of inserts (grades) make the new tools particularly advantageous for users processing cast iron, chrome nickels, steel or aluminium, such as turbine or gearbox housings, gears, cylinder bores and steering knuckles.
Roughing and finishing in multiple steps with Walter’s new boring tools with tangentially-arranged indexable inserts