With the FW4 and MW4 wiper geometries, Walter is introducing two turning indexable insert geometries. The new FW4 and MW4 combine the ‘wiper effect’ with new chip-breaker geometries and wear-resistant Walter Tiger•tec Gold grades. Walter’s curved wiper edge sweeps over the machined surface again, making it possible to either double the feed rate and increase productivity by 100%, or significantly improve the surface quality while maintaining the same feed rate.

With these new geometries, Walter is now transferring this effect from the existing FW5 and MW5 double-sided cutting inserts to indexable inserts with a positive basic shape. The result is the FW4 geometry with a narrow chip breaker for finishing operations and the MW4 geometry with an open chip-breaker groove and longer wiper cutting edge radius for medium machining.

Both geometries are for universal application in ISO materials P, M and K, as well as for secondary applications in ISO S materials. The FW4 and MW4 geometries make it possible to achieve improved surface quality, productivity and process reliability thanks to the wiper edge with its curved design. This curved wiper design also helps when the machine is not aligned 100%, for example after a crash or with slightly offset turrets.

As a further advantage, the new chip breakers increase the chip-breaking range with higher feed rates, resulting in less machine downtime caused by ‘birds nesting’. Higher feed rates reduce machining times and therefore contact times, increasing tool life and reducing the number of tool changes. The combination of double the productivity and/or surface quality is particularly appealing for series manufacturers.
For further information www.walter-tools.com

Kennametal reports that its Harvi solid-carbide end mills will be included as a preferred product in Lockheed Martin’s internal machining guide. The resource, produced by Lockheed Martin Aeronautics’ Operations Technology group for internal operations and engineering, as well as global supply-chain partners, identifies the most effective parameters and processes for machining material-specific aerospace components.

“We’re honoured to be a long-time supplier to Lockheed Martin and have our Harvi III end milling portfolio featured in one of its most invaluable machining guides,” says Keith Mudge, Kennametal VP -metal cutting sales, Americas. “We work closely with customers like Lockheed Martin to solve problems and deliver the utmost accuracy in machining. The inclusion of Harvi end mills in this internal resource is a testament to our commitment in the industry and our high standard of excellence.”

Kennametal says that its Harvi solid-carbide end mill portfolio is an industry staple because of its ability to outperform other end mill tools when working on hard-to-machine aerospace materials like titanium and Inconel.A signature Kennametal brand and bestseller, Harvi end mills deliver time and cost savings in aerospace operations with fastmetal removal rates and longer tool life, reports the company.

Users experience maximum productivity from Harvi-style end mills with features like the
Harvi 1 TE’s twisted cutting edge for increased corner stability and ramping and helical interpolation operations. Further stand-out features include: proprietary relief from anti-vibration-anti-friction technology; unequal divided flutes, including some with variable helix, enabling vibration dampening and unmatched feed rates; and an innovative flute design with chip gashes to reduce cutting forces and promote more efficient chip evacuation.

In April, Kennametal launched a new end mill grade called KCSM15A and will be expanding its Harvi product lines further this autumn.
For further information www.kennametal.com

A new generation of tools for grooving and cut-off milling is now available from tooling manufacturer Horn. The cutter bodies are available from stock as side, shell and screw-in milling cutters; the two latter variants being equipped for internal coolant supply. Special surface treatment offers protection against abrasion from chips.

Horn offers the side milling cutters in diameters from 80 to 200 mm, while thegrooving width is optionally 5, 6 or 8 mm. As shell mills, the tools are available in diameters from 63 to 200 mm and with identical grooving widths. Horn’s screw-in cutters are for a groove width of 5 mm and come in diameters from 40 to 63 mm as standard. The effective number of teeth of depends on tool diameter and ranges from two to 13.

The M475 system employs precision-ground, indexable inserts with four cutting edges. Positive geometry and a round chip-breaker groove together with a new grade, RC4G, deliver economical, productive machining performance. New also is the availability of an RC4 coating applied using high-power impulse magnetron sputtering. It provides high toughness and hardness to enable the machining of steels at elevated cutting speeds, leading to increased insert life.
For further information www.phorn.co.uk

Guhring is extending its range of drills with the arrival of the company’s new Micro Precision Drills. Developed for the precision drilling of challenging materials, Guhring says that its Micro Precision Drills deliver rigidity, stability, performance and precision when drilling small holes.

Manufactured from a sub-micron carbide substrate, the latest drilling line is suitable for use in challenging materials such as stainless steel, heat-resistant steels, titanium and titanium alloys, Inconel, Hastelloy, Monel, copper, brass and bronze alloys. Until now, this range of materials has proven particularly difficult to drill, especially in small diameters from 0.5 to 3mm. What enables the new Guhring Micro Precision Drills to process this wide range of materials is the strong carbide substrate and innovative geometry. The next-generation geometry technology incorporates a ground facet point, concave cutting edge and web thinning – all in one drill.

This combination delivers high performance as the special facet point increases the cutting data, so end users can process holes at higher speeds than ever before. Additionally, the concave cutting edge significantly improves chip evacuation, which is critical for small-hole drilling where swarf clearance can cause performance issues. The new drills also incorporate Guhring’s next-generation coating technology with high heat resistance. This impervious coating technology maximises tool life and performance even when drilling the most difficult of materials, reports the company, retaining edge performance for prolonged periods under demanding conditions.

The h7 diameter tolerance Guhring Micro Precision Drills are available in drilling depths of 3, 6, 10, 15, and 20xD, in 0.05mm increments from 1 to 3mm with additional diameter increments in the range for pre-threading and specialist requirements.
For further information www.guhring.co.uk