Drilling tool
With tangentially arranged indexable inserts
In the new Walter boring tools for the automotive sector, the indexable inserts are arranged tangentially. According to the company, this allows the high feed rates of tangential systems to be transferred from milling to drilling. The advantage over radial tools lies in the large chip spaces.
The combination of the tool core with Walter's own indexable insert geometry also has a positive effect on the surface quality: A second clearance angle reduces the otherwise high effective clearance angles of tangential tools and reduces the "chatter tendency". The indexable insert with a rectangular basic shape can be installed at any angle. At 72° and 90°, an additional face chamfer (wiper) is effective. This additionally guides and calms the tool. Drilling ratios of 4 × Dc can thus be achieved. Small diameters (from 24 mm) can also be machined with 3 teeth (z3).
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