Quickgrind’s high feed Spectre range is suitable for rough machining operations such as slotting, pocket milling and contour machining. Indeed, the end-mills can even be used for pocketing with high length-over-diameter ratios and intricate features, says the company.

The CVD cutting material is harder than PCD and twice as wear-resistant. Because of this and its other properties, CVD delivers various benefits when milling and turning - from rough machining to micro milling - of long-chipping aluminum and magnesium alloys, high-silica aluminum as well as of precious metal alloys, plastics with abrasive fillers, tungsten carbide and ceramic green compacts.

The  long tool life of diamond tools combined with an optimized chip-breaker on the CVD diamond cutter can increase machining productivity by up to 35 per cent and reduce processing costs by up to 80 per cent. For high performance machining and continuous turning applications, various inserts with wiper geometries were developed.

To demonstrate the performance levels available, Quickgrind says that a 12 mm diameter Spectre cutter can mill materials such as carbon steel, alloy steel or cast iron at cutting speeds of up to 180 m/min and feed per tooth of up to 0.6 (at 0.7 mm depth-of-cut).

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In the first expansion phases, ISO inserts in types C, D and V along with different types of milling cutters were equipped with the CVD thick film. The next phase will include Supermini® and Mini tool systems.

The undulating-chip breaker reduces contact of the chip with the insert surface, which considerably reduces heat formation and energy consumption. The extreme chip angle of up to 25° produces a soft cut and reduces burr formation to a minimum. This increases tool life compared to PCD cutters.

The Spectre series of solid carbide end-mills is being launched by Quickgrind so that machine shops are able to introduce increased speeds and feed rates into their milling operations. According to the company, by reducing depth-of-cut and increasing the feed rate by up to six times that of conventional end-mills, manufacturers can greatly improve material removal rates.

Laser equipment is used to cut out the segments from the CVD-D blanks; these are then attached to the one-cutter inserts or milling cutters by brazing under vacuum. The chip-breakers and cutting edges are also laser formed.

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In addition the controlled chip break guarantees process reliability, the reduced cutting force protects the spindle and allows the narrowest of tolerances even with delicate components. The sharp blade offers special advantages in processing CFRP, GFR and their composites.

Spectre three-flute end-mills are based on a coated carbide substrate, novel edge geometry and neck-relieved shanks. Developed to withstand high cutting forces, the cutters are recommended for extended reach in deep cavity machining operations. Further applications where machine shops will benefit from the use of Spectre end-mills include plunging and helical ramping.

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Spectre end-mills are also suitable for machining materials such as stainless steel (including Duplex and Super Duplex), Inconel, titanium, tool steel and hardened steel (up to 50 HRC). The cutters are available in 3, 6, 8, 10 and 12 mm diameters. Long series versions can be acquired in 6 and 8 mm diameters, with short series types available in 8 and 12 mm diameters.