Iscar's Heliturn system features a unique, double-sided insert with 4 cutting edges for Fast Metal Removal (FMR) turning. The revolutionary Heliturn is a tangentially clamped insert with a exclusive helical shaped cutting edge, useful for large depths of cut and greater than typical feed rate. The LNMX...-HT Heliturn insert is screw-clamped into the SLANR tool holder and fortified by the TLN ..-HT carbide seat. This seat has ground surfaces on the top and bottom, to establish perfect contact of the insert with the tool holders. The upper rake face of the insert is mounted level with the top of the tool holder to enable chips to flow across the insert, without being disrupted by clamps or the tool holder body. The 4 curved helical cutting edges assure positive radial rake angles and soft penetration into the material being cut. The lower forces and smaller loads establish better tool longevity, more stability and the ability to use particularly tremendous depths of cut and higher feeds. The chipformer, manipulates and breaks the chip into rib type curved segments which can effectively be removed from the cutting area. The insert has a frontal clearance angle of 3.7 with a 6 side clearance angle to permit machining to a 90 shoulder. Depth of cut up to .315" and facing depths to .126" at up to .047" IPR are obtainable with Heliturn.
When opposed to CNMG/M 16... or WNMG/M 13... insert sizes with the identical corner radius, much better tool life can be predictable 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 tool holder for the medium application range of up to .197" depth of cut. The completely new insert features all of the blessings of the larger insert. This magnifies the economical benefit in the medium machining application extent. 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 foreseen. The inserts are available in .031, .047 and .063" tool nose radii. Heliturn inserts are obtainable in the most advanced carbide grades: IC9025, IC3028 , IC428, IC907, and IC908.
The external tool holders are obtainable in 1, 1.25 and 1.5" shank sizes. Boring bars are obtainable in 1, 1.25 1.5 and 2" bar sizes. Also attainable are exchangeable heads. These tool holders have Iscar's unique Hard Touch coating, which extends holder life and thwarts corrosion. As a result of the positioning of this insert, machining next to the tailstock is reasonable.
The high positive rake angle of these tools allows 10-15% less power usage than conventional tool holders at the same parameters.
By utilizing Iscar's Heliturn tools, enormous cost savings and profitability in lathe processes is assured.
A Unique 80 Degree Rhombic Insert with high helical cutting edge for high metal removal rates Iscar is introducing the CNMX 1207..-HTW insert family. The revolutionary insert has a very positive radial, helical cutting edge and a positive rake angle; a incorporation which considerably reduces the cutting forces. The insert's corner has a wiper arrangement which supplies high surface finish even at high feed conditions, which in several occasions can omit a finishing cut. The corner angle is 88 degrees which provides expanded strength. The CNMX inserts were designed for heavy machining applications. Their special design ensures reliable, fast metal removal when using 80 degree rhombic inserts. They can be mounted on any regular tool holder that carries standard CNMG inserts, but the seat has to be substituted with a special seat: TCH 4. Iscar's R-clamp tool holders are highly endorsed for heavy machining applications.
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