Turning tools Versatile cutting tools for small part machining

Editor: MA Alexander Stark

UK — Vargus has now introduced its new ST-Cut line of cutting tools for small part machining. Developed specifically for the turning of small components on Swiss-type sliding head-turning machines, the ST-Cut line presents a solution for virtually every small part turning application.

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The ST-Cut series from Vargus presents a solution for small part turning applications.
The ST-Cut series from Vargus presents a solution for small part turning applications.
(Source: Vargus)

The ST-Cut series from Vargus features a unique insert replacement system that provides fast and easy changeovers of inserts from both sides of the tool. This is particularly suitable for manufacturers running sliding head turning centres where space is often limited inside the working envelope. Also, the innovative clamping system demonstrates high repeatability and excellent rigidity for manufacturers aiming to part-off components with a maximum part-off diameter of 17 mm.

The ST-Cut Series encompasses everything from parting-off, groove-turn, square grooving, round grooving, threading, front and back-turning as well as face grooving. From the parting off-line, the ST-Cuts series incorporates both left and right-hand inserts with a cutting width from 0.5 to 2 mm with a range of cutting depths, geometries and insert grades. Similarly, the square grooving/turn and round grooving line offers left and right-hand variants with insert widths from 0.5 to 3 mm with the round groove inserts offering a choice of radii from 0.2, 0.5, 0.75, 1, 1.25 and 1.5 mm. From a threading perspective, the left and right-hand inserts are supplied with a 55 ° and 60 ° profile option with a maximum insert width of up to 3.2 mm.

The inserts are available in two grades, this includes the Altin PVD coated VPG grade for achieving medium to high cutting speeds on alloy steel, stainless and titanium alloys. Alongside this, the uncoated VS020 sub-micro grade is recommended for medium to low cutting speeds. The VS020 is uncoated to ensure a sharper cutting edge that is crucial for very small components where accuracy is paramount.

To cater for the diverse demands of small part turning companies, Vargus has introduced the ST-Cut Series with a choice of tool holders that include square shank tool holders, step square shank tool holders and square shanks with 90 ° tools. The square shank tools are available in both left and right-hand variants with an adjusting screw, key and torque limiting adapter.

The tool shanks that accommodate the various insert geometries are available as an 8 by 10 mm variant as well as a 10, 12, 16 and 20 mm square shank with an overall length of either 110 mm or 120 mm. Alongside the square shank, tools are the stepped square shank tool holders. Also available in 8 by 10 mm, 10, 12 and 16 mm square shanks, the stepped tool holders offer a step of 30 or 40mm to provide the end-user with additional reach when cutting features in intricate parts or attaining access to difficult to reach areas. Completing the line-up of tool holders is the square shank 90 ° right-hand tool body. Vargus provides the 90 ° tool body with the option of a 10 mm or 12 mm square shank that is 110 and 120 mm long for the respective tool widths. As well as the ST-Cut Series, Vargus UK can also offer its VG-Cut series of parting off solutions with chip formers and high-pressure coolant, its Microscope range for small boring applications and the GrooVical series for precision grooving.

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