Recycling initiative supports circular economy

Metal cutting expert Sandvik Coromant, together with the wider Sandvik Group, is launching an upgraded tool recycling scheme. Building on the success of its existing buy-back programme, the new scheme will make the process of repurposing worn carbide tools easier for customers, while also boosting material circularity across the supply chain.With the scheme, customers can sell their worn-out tools to Sandvik Coromant, which then extracts and reuses the materials in the production of new cutting tools. It is possible to recycle up to 95% of a used carbide insert. Rollout to all customers will take place by 2025.
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Hurco bucks the trend with record sales

Against a backdrop of difficult trading conditions in the UK machine tool industry, Hurco Europe’s turnover to the end of its financial year in November 2023 was surprising. It turned out to be a record year for sales, higher than the best previous figure, achieved in 2018.Managing director David Waghorn says: “We delivered a few more lathes than last year and, while the number of machining centres we sold did not increase, their unit price was significantly higher.”

There was also an increase in large machine sales, which increases the value per sale, while many negotiations included requests for extras like mist extraction, through-spindle coolant, probing and longer warranties. Notably, the addition of a collaborative robot raised the value of some orders:the number delivered was two and a half times up on the previous year.
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Walter introduces WL17 indexable inserts

Cutting tool specialist Walter has expanded its WL copy-turning system with the introduction of WL17 indexable inserts for Swiss-type automatic lathes and small diameter machining. Used on the W1011-S-P external turning toolholder, which is also a new arrival (along with W1210/W1211 boring bars), they bring the benefits of the existing WL25 inserts to smaller dimensions.

The W1011-S-P toolholder has a square shank that is available in the most common shank sizes of 12 x 12 mm and 16 x 16mm. They are for use on automatic lathes and multi-spindle turning centres. Walter says it is the only manufacturer to offer a turning system for automatic lathes with positive engagement and three-edge turning inserts.

As with the WL25 turning inserts and toolholders, the smaller indexable inserts facilitate equally high cost efficiencies, thanks to the three cutting edges, high stability and 50% improved indexing accuracy in comparison with ISO inserts. The targeted Walter precision cooling on the rake and flank faces also increases tool edge life.

When it comes to internal turning, the inner diameter (Dmin) of the workpiece is often a limiting factor. ISO turning inserts, such as the VBMT11, only have two cutting edges and are applicable at a 93° approach angle from a Dmin of 22mm. By contrast, the new Walter boring bars W1210 and W1211 with WL17 inserts are suitable for internal turning from Dmin 18 mm, while also sportingone more cutting edge.

Furthermore, the operator can use the indexable inserts for both forward and reverse turning. Just like all WL inserts, WL17 inserts can be used in a neutral, right-hand and left-hand configuration, and feature the latest cutting tool coatings, such as Tiger•tec Gold.
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Addmore boosts tool life and cuts cycle time

Addmore Engineering, based in Bedford, is a CNC machining company that supplies high-precision parts to the automotive, medical, and oil and gas industries. What started from a barn in Watford is now a large operation which spans several buildings, employs 48 skilled machinists and runs 24 hours a day.

Specialising in highly precise and intricately machined parts, Addmore turned to Ceratizit over 20 years ago to help with its complex component and tooling needs. Regularly visited by an applications sales engineer and a technical sales engineer from Ceratizit, the two companies enjoy a strong working relationship that positively impacts business growth.

While manyCeratizit inserts are in use at Addmore, a recent switch made was to Ceratizit’s Pentron drill with the ambition of increasing tool life and saving money on tool replacement costs. The tool Addmore was using previously was the 2xD 46 mm diameter C900 from Ceratizit. Although successfully completing the job, the inserts were getting pick-up and sticking to chips.

Addmore saw immediate benefits from using Ceratizit’s 2xD 46mm KUB Pentron drill. Whereas the previous drill had an insert life of between 55-75 parts per edge, the Pentron drill increased this to 120+ parts per edge, delivering an improvement of well over 50%.

Shaun Thornton, technical manager for Ceratizit UK, says that this improvement is “down to Ceratizit’s SOGX 03 geometry and BK8430 coating in combination with the Pentron drill. This specialist coating minimises chip-sticking and increases swarf evacuation due to its optimised flutes.”

As well as the cost-saving benefits which come from the extended insert life of the Pentron drill, switching to this insert also meant that machine cycle time was reduced by 10%.
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Guhring mould and die range hits the spot

Guhring is releasing a range of tools especially for companies working in the mould and die industry. Among the stand-out performers is the G-Mold milling line, which allows manufacturers to benefit from longtool life and optimal component surfaces.

According to Guhring, the G-Mold milling series maximises tool life when machining materials up to 65HRc. With the new Guhring Signum and Perrox coating technologies, alongside an ultra-hard carbide substrate, G-Mold demonstrates extended tool life and high levels of machining performance. Indeed,further gains are available thanks to the Guhrojet peripheral cooling system that delivers through-tool coolant or compressed air to remove swarf.

G-Mold milling cutters are available in ball-nose, torus, finishing, radius finishing, universal and high-feed variants, all of which incorporate micron-precision radius accuracy. Three prominent arrivals among the range include the new 55 and 65 G-Mold Series ball-nose tools, and the high-feed range.

The new G-Mold 65B series of high-precision two- and four-flute ball-nose cutters for machining materials up to 65HRc incorporate a radius contour tolerance of ±0.005mm to ensure component contour accuracy and repeatability. The cuttersfeature centre-cutting geometry, and 25° flute and neck clearance for extended reach applications.

Alongside the G-Mold 65B, is the new G-Mold 55B series. More of an all-rounder, the G-Mold 55B is suitable for machining steel, stainless steel, cast iron, super alloys and hard materials up to 55HRc.

For mould tool companies that demand the epitome of high-performance cutting, the G-Mold 65 HF series is for high-feed roughing with low depths of cut and maximum feed rates to optimise metal removal rate. The G-Mold 65 HF high-feed series incorporates Guhring’s Guhrojet peripheral cooling from 1 to 3mm diameter with central through-coolant for 4mm diameter and above.
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