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Forming a
The rake face determines the cutting geometry of a tool and its
formation represents a key element of insert design.
Over the years, technological constraints have largely
dictated the shape of the rake face. Breaking a long
chip when turning by tools carrying these inserts often
required using additional cover parts mounted in the
tools above the inserts. Another common solution
for flat-face turning inserts was to produce a chip
breaking dimple by grinding. The dimple facilitated
curling the chip in a spiral and then its breaking into
smaller segments.
The chip breaking cover part obstructed chip flow, while
the chips caused intensive abrasion of the part and
significantly reduced its tool life.
The technology of sintered carbide products facilitated
the shaping of insert rake faces in various forms and
broke the dependence of a chip breaking surface
on the dimple or the cover part. The rake face took
on an appearance that combined concave and
convex portions, local protrusions, etc. This complex
geometry was designed to provide the necessary chip
formation and effective chip control.
DUSTRY 4.0
16 MACHINING IN TELLIGENTLY
