Smaller Economical Turning Inserts, Holders Maintain Same Performance
Tungaloy is expanding its economical ISO-EcoTurn turning insert and holder system to include VNMG inserts and holders. The inserts, while downsized for tool economy, incorporate the identical chipbreaker geometry and thickness of regular-sized inserts to maintain the same cutting performance at a depth of cut ranging to 3 mm (0.12"). Typically, when an insert is downsized, the thickness of the insert is reduced as well, the company says, but ISO-EcoTurn inserts preserve the thickness of standard inserts in order to maintain fracture resistance. Thanks to reduced volume per insert, the inserts are said to decrease cost per insert on a production line without compromising insert performance.
The new VNMG inserts and holders complement the existing ISO-EcoTurn series, offering a comprehensive ECO-tooling solution to the turning market, the company says. A VNMG 2.33 (VNMG1204) insert, among other new insert lines, is not only economical due to its reduced volume but also enables ID turning down to 1.25" (32 mm). The inserts are available in CVD grade T9100 for turning steel; CVD grade T6100 and PVD grade AH600 for turning stainless steel; and two cermet grades, NS9530 and GT9530. Chipbreakers for the new inserts include TSF for finishing steel, TM for semi-finishing steel, SS for finishing stainless steel and SM for semi-finishing stainless steel. The new addition offers holders for OD and ID turning, as well as holders with TungCap connectors. The TungTurn-Jet system is also available with holders for OD turning, as well as the TungCap interface, which enhances swarf control and tool life through jet streaming coolant supply.
To make the transition to hard turning, you'll need to switch from carbide to CBN inserts, but that is easier (and more economical) than you might think. It's making the jump to much higher surface speeds that might scare you off. It needn't. Here's why.
The more common twist drill point geometries often are not the best for the job at hand. By choosing the best point for the material being drilled, it is possible to achieve better tool life, hole geometry, precision, and productivity.
Reducing cutting fluid use offers the chance for considerable cost savings. Tool life may even improve.