CoroCut R inserts feature -GM geometry for greater chip control in heavy grooving
1 min read
CoroCut R size inserts now feature -GM geometry for greater chip control in heavy grooving operations. This introduction from Sandvik Coromant, aimed at components such as cam shafts, turbine rings and discs, shafts and rolls, provides a cutting action that forms and narrows the chips to ensure their efficient removal from the groove.
Effective chip evacuation has always been major problem with heavy grooving where there is a constant risk of chip jamming. This can result in loss of tolerance or even tool breakage. The development of -GM geometry makes it possible to groove deeply in a continuous in-feed operation to achieve high metal removal rates without risk of damage to the tool or the component surface. Additional benefits, says Sandvik Coromant, include easier programming when stopping or backing-out as chip removal is no longer necessary. Also, the positive edge of -GM geometry makes the insert cut lightly and smoothly to generate low cutting forces, thereby reducing vibration and requiring less machine power.
As with all grooving operations, advises Sandvik Coromant, it is preferable to aim coolant directly into the groove as a further aid to chip evacuation. A toolholder or cutting head featuring integrated coolant delivery capabilities is recommended, while for grooving ductile or stringy materials, high pressure coolant is a definite advantage.
The CoroCut R size inserts with -GM geometry for heavy grooving are available in 12, 12.7 and 15 mm widths, and are applicable in a large range of tooling solutions, including CoroTurn SL70.
With a recommended feedrate range of 0.15–0.5 mm/rev, first choice grades include GC1125 for ISO-P and ISO-N materials, GC1125 for ISO-M, GC4225 for ISO K and GC1105 for ISO-S.
