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ISCAR’s HELITURN system features a unique, double-sided insert with 4 cutting edges for Fast Metal Removal (FMR) turning. The new HELITURN is a tangentially clamped insert with a unique helical shaped cutting edge, useful for large depths of cut and higher than normal feed rate.
The LNMX...-HT HELITURN insert is screw-clamped into the SLANR toolholder and supported by the TLN ..-HT carbide seat. This seat has ground surfaces on the top and bottom, to ensure perfect contact of the insert with the toolholder.
The upper rake face of this insert is mounted level with the top of the toolholder to enable chips to flow across the insert, without being disturbed by clamps or the toolholder body. The 4 curved helical cutting edges ensure positive radial rake angles and soft penetration into the material being cut. The lower forces and smaller loads ensure better tool life, higher stability and the ability to use very large depths of cut and higher feeds. The chipformer (with small bumps), deforms and breaks the chip into rib type curved segments which can easily be removed from the cutting area.
The insert has a frontal clearance angle of 3.7° with a 6° side clearance angle to allow machining to a 90° shoulder.
Depths of cut up to 8 mm [.315”] and facing depths to 3.2 mm [.126” ]
at up to 1.2 mm/rev [.047” IPR] are achievable with HELITURN.
When compared to CNMG/M 16… or WNMG/M 13… insert sizes with the same corner radius, much better tool life can be expected when using the LNMX 1506..-HT insert.
ISCAR has recently added a smaller size to the HELITURN family – the LNMX 1104..R/L-HT insert and toolholder for the medium application range of up to 5 mm [.197” ] depth of cut. The new insert features all of the advantages of the larger insert. This increases the economical advantage in the medium machining application range. When compared to CNMG/M 43. 12… or WNMG/M 43. 08… insert sizes with the same corner radius, a much better tool life can be expected.
The inserts are available in 0.8, 1.2 and 1.6 mm [.031, .047 and .063”] tool nose radii.
HELITURN inserts are available in the most advanced carbide grades: IC9025, IC3028 , IC428, IC907, and IC908.
The external toolholders are available in 20, 25 32 and 40 mm [1, 1.25 and 1.5”] shank sizes. Boring bars are available in 25, 32, 40 and
50 mm [1, 1.25 1.5 and 2”] bar sizes. Also available are exchangeable heads. These tools have ISCAR’s unique HARD TOUCH coating, which extends holder life and resists corrosion.
As a result of the positioning of this insert, machining next to the tailstock is possible.
The high positive rake angle of these tools allows 10-15% less power usage than conventional tools at the same parameters.
By using ISCAR’s HELITURN tools, huge cost savings and profitability in lathe operations is guaranteed.
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