Latest drills from Guhring

The latest addition to Guhring’s hole-making portfolio is the RT100XF. Created to reduce cycle times for difficult-to-machine materials and special applications in series production, the hard drilling line is said to be extremely resilient to potential breakages.

This bold claim is based upon the carbide grade developed by Guhring for the RT100XF, which performs a balancing act between hardness and toughness. The special structure of the grade has a re-sharpening effect, so breakages that normally accelerate tool wear no longer occur. This effect is supplemented by the company’s existing nanoFire coating system, which has been created by a specially designed pre and post-treatment that smooths the coating and makes it significantly more robust.
RT100XF supports the robust performance of the carbide grade and surface treatment with an early double margin support that enhances coaxiality to deliver the desired bore size and roundness. The drill is suitable for holes from 5xD upwards.
In terms of design, support chamfers are included to ensure running smoothness, while polished flutes reduce heat input and support the fast evacuation of chips. Additionally, the point geometry is protected by a negative chamfer, which makes the cutting edge robust and durable. Rounded edge preparation on the RT100XF produces a stable and efficient cutting edge; this rounding is produced with micron precision, something made possible by Guhring’s manufacturing competence.
Regarding workpiece materials, the through-coolant drills are suitable for structural and case-hardened steels, free-cutting and heat-treated steels, titanium, Inconel, Nimonic, and Hastelloy.
Offered in 5xD and 7xD, the drills can be purchased in diameters from 3 to 20 mm diameter, in 0.1 mm increments. The series is also available in all common imperial dimensions.
For further information www.guhring.co.uk

Forgemasters wins big

Sheffield Forgemasters was awarded ‘Large Business of the Year’ at the Sheffield Business Awards earlier this month.

‘Large Business of the Year’ is presented to organisations employing over 100 full-time employees and/or reporting annual turnover of +£25m. The award goes to a business that has achieved consistent growth backed by a strong financial performance. This is reflective of the results Sheffield Forgemasters has achieved in recent years.
For further information www.sheffieldforgemasters.com

Sarginsons secures national prize

Sarginsons Industries has won the ‘Company Achievement Award’ at the Cast Metals Industry Awards, which was staged by the Cast Metals Federation (CMF) in Wolverhampton.

The ‘lightweighting’ specialist picked up ‘Component of the Year’ at the event in 2018 and went one better this time out after a successful 18 months. Sarginsons has made major investments to help grow and diversify the business into new markets, including creating the Sarginsons Technical Centre (STC), bringing in new technicians – including three degree apprentices – and developing the company’s headquarters.
For further information https://sarginsons.com/

Horn expands 3D milling system

In a joint sales co-operation with Boehlerit, Horn Cutting Tools has introduced to the UK market an expanded 3D milling programme for the tool and mould-making industry.

The ISO 00P is a universal tool system for general mechanical engineering and mould making. As the inserts are mounted in a neutral position in the tool holder, they ensure a high level of contouring accuracy. However, despite the neutral position, the edge geometry enables a soft cut to be achieved.
Boehlerit’s RhombiTec system is a universal finishing tool for all standard materials and applications. The indexable inserts demonstrate high manufacturing precision and long tool life, says the company. Of particular note, the axial and radial wiper geometry is said to ensure high productivity, good surface quality and vibration-free finishing, even at high depths of cut.
The BallTec and TorroTec milling systems are multi-functional tools for achieving high productivity. These systems allow users to save on tool holders, as the ball-nose copying tools are suitable for semi-finishing and finishing.
Additionally, Boehlerit offers a variety of indexable inserts and tool holders. The carbide shank with brazed insert seat provides vibration damping, resulting in high levels of surface quality on the workpiece. Inserts based on ultra-fine carbide ensure high wear resistance combined with elevated fracture resistance, which increases process reliability. All variants have an internal coolant supply.
For further information www.phorn.co.uk

First Brother R650X2 arrives in Europe

At the beginning of November 2019, Whitehouse Machine Tools delivered to the Andover facility of MRT Castings (an aluminium diecasting and machining specialist), the first Brother Speedio R650X2 machining centre to be installed in Europe. The 30-taper machine is equipped with twin pallets carrying 4th-axis trunnions, as well as Blum workpiece and tool probing to ensure the accuracy of machined parts.

Replacing a 20-year-old Brother model with a standard table that was still producing parts within tolerance, the new machine has reduced cycle times by 30% when running identical programs due to the speed and power of the manufacturer’s CNC C00 control system. Additionally, automatic pallet change cuts loading times, presenting parts to the spindle faster and increasing productivity still further.
A sequel to Brother’s flagship TC-32B QT, the latest 16,000 rpm spindle machine has the largest number of tools available in the Speedio range, 40 as opposed to the former machine’s 21, as well as a larger X-axis stroke, up from 550 to 650 mm, and an 800 mm long table instead of 600 mm. Z-axis travel is also slightly more. That the R650X2 has these characteristics is partly down to the closeness of Phil Rawnson, managing director of MRT Castings, to the Japanese machine builder.

Regular meetings serve to advise the manufacturer about the UK manufacturing sector and what the market requires. For example, increased X-axis capacity is a standard request from MRT, as evidenced by the company’s involvement in the development and introduction of the Brother Speedio S1000X1 with 1000 mm X axis. A pair of these machines was installed at Andover four years ago, the first models to be sold by Brother’s sole UK and Ireland agent Whitehouse Machine Tools.
Similarly, in April 2019, MRT was the first in the UK to receive a Brother cell with Feedio robotic component handling to automate a five-axis M140X2 machining centre that was purchased at the same time.
Rawnson says: “Brother’s willingness to consult with its customers is a good sign, as it means it is listening to what the market wants. We made it clear to them that we prefer a large machining envelope to give us more flexibility in the methods we use to fixture parts. There are several ways we exploit the additional working volume, especially extra X-axis travel.
“If we need to hit several faces of a component, we can carry out a second machining operation sequentially by fixturing parts side by side on a single fixture,” he adds. “Or we can clamp a larger number of small parts to fill the table. By putting more castings under the spindle at the same time, fewer tool changes are needed per component and productivity is increased.
“Alternatively, we can use the three or four CNC axes to machine longer castings at the highly productive rates possible using a 30-taper machine.”

Pallet-change Brothers are generally employed at the Andover facility if cycle times are short, say less than five minutes, to minimise spindle idle time during sequential Op 1 and Op 2 machining on six sides of a casting. Fixed-table machines are more economical if cycles are longer, as one operator is able to load and unload a pair of machines to complete the two operations in tandem.
The accuracies achieved are impressive, down to a couple of microns for bearing bores. Some electrical assemblies comprise up to 20 individual castings and tolerance build-up can become a problem if such tight limits are not held. Other work for the electronics, defence and high-end lighting sectors also stipulates tolerances that are sometimes very tight. Parts coming off the Brothers are not only dimensionally accurate, but highly repeatable, according to Rawnson.
He says: “MRT Castings has been a family run business since its formation in 1947 and has always worked in partnership with its customers, constantly evolving to meet their demands. Brother has adopted a similar partnership approach by listening to what we and other subcontractors want, and developing new machines that fit our changing requirements.”

Early 2020 will see the opening on the Andover site of a new foundry that is some 60% larger than the existing facility, which will close to provide extra space for an additional machine shop to cope with the ever-increasing amount of new contracts being won by MRT, from both existing and new customers. More and more these orders are arriving from overseas, the firm having won the ‘Queen’s Award for Enterprise: International Trade’ in 2016 after increasing overseas sales by 330% in the previous three years to a point where exports now account for half of annual turnover.
For further information www.wmtcnc.com