Page 9 - ISCAR_ARTICLE_2020

Acetabular Shell
Machining of the acetabular shell component
consists of rough internal turning, finish profile
milling, shouldering, upper and bottom chamfering,
drilling, thread milling, external rough turning,
and external grooving.

HELI-GRIP double-ended inserts are used for rough
internal turning, as the twisted design allows them to
groove deeper than the insert length. Internal finish
milling is performed by SOLIDMILL 3-flute, 30° helix
short solid carbide ball nose endmills. SOLIDMILL
endmills with 4 flutes, 38° helix, and variable pitch for
chatter dampening, perform the finish shouldering
operations, and a special-shaped endmill is utilized
for the upper and bottom chamfering that follows the
drilling stage.

SOLIDDRILL solid carbide drills with 3-20 mm
(.185-.765 in) range and 3xD and 5xD drilling depths
are used for the drilling process. SOLIDDRILL tools
feature a right-hand cut with and without internal
coolant nozzles and advanced TiAlN coating for
optimum hole quality, high performance reliability and
economical output.
Thread milling is done by SOLIDMILL solid carbide
internal threading endmills, which integrate coolant
holes for ISO thread profiles. ISO standard inserts
with SWISSTURN toolholders with JETCUT high
pressure coolant are used for rough turning, and
external grooving is performed with CUT-GRIP
precision inserts.

SOLIDMILL endmills with 4 flutes, 38° helix and
variable pitch for chatter dampening with 3xD
relieved necks, and SOLIDMILL 3 flute, 30° helix
short solid carbide ball nose endmills perform the
final milling operations.

The machining required for
a femoral head involves

different operations,

including rough turning
and drilling, internal grooving

and milling

SOLID CARBIDE LINE
ISCAR 9