A CIRCULAR PLANER ARRANGEMENT WITH THREE PLANER SECTIONS

Patentradars sammanfattning

Kvarnstrands Verktyg AB discloses a circular planer head assembly comprising three co-rotating circular sections on a common hub: a central section bearing conventional face-cutting knives for flat side surfaces, and two flanking side sections each carrying square indexable inserts for edge/corner profiling. The side inserts are seated in precision mounting pockets defined by a tilt angle (25°–65°, preferably 45°), a side clearance angle (~2°), and a diameter-proportional rear clearance angle (diameter/1000 × 1.45, typically ~5° for a 340 mm head). Each insert has four identical cutting edges and can be rotated 90° up to four times before replacement, eliminating resharpening and the dimensional drift it causes.

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