Working with its client, Twilflex – a specialist in braking technologies for industrial applications, Q8Oils recently sought effective improvements to its metalworking filtration needs. While filtration methods such as paper filters provide an effective barrier against larger particles, they can allow smaller ferrous particles to pass through with the fluids, which can lead to a significant reduction in tool life expectancy.

Q8Oils regularly installs products from Eclipse Magnetics to a number of its customers’ metalworking tools as part of the company’s equipment solution services and, through partnering with expert filtration suppliers, can offer advice and support to address metalworking cleanliness issues, particularly to those with high-precision needs.

In addition to the use of its Berlioz XRS synthetic grinding fluid, Q8 installed an Eclipse Magnetics MicroMag MM20 in-line, before fluid delivery, to bolster the filtration system of Twilflix’s grinding machine. With its high-intensity magnetic core and patented fluid flow path, the MicroMag captures almost 100% of ferrous contamination from metalworking fluids. The range also boasts a compact and easy-clean design with high-capacity collection that does not block the through-flow, or impact fluid pressure or flow.

Having had the MM20 installed for one month, with intermittent usage, the filter had caught over 2 kg of ferrous materials when removed for cleaning. Q8Oils has also reported that Twilflex has seen a substantial improvement to grinding stone life, with the frequency of grinding wheel dressing largely extended. An improvement in fluid cleanliness was also noted that, in-turn, had prevented the ‘flecking’ effect caused by fine debris caught between the wheel and workpiece during the grinding process.
The MM20 will maintain its effectiveness throughout the duration of the tool’s lifespan without losing intensity. Plus, with no need to replace filters or other consumables, as well as a reduction in scrap and reject rate, the MicroMag offers fast return on investment.

A maintenance and service engineer for Twilflex said: “We tried the Eclipse magnetic filter for a month on our surface grinding machine and found it to be so effective that we decided to purchase it. We can see a difference in tool life, while coolant life is much longer. This machine doesn’t have any other filters, so we really notice the benefits.”

For further information
www.eclipsemagnetics.com

To date, Voestalpine Rotec GmbH, a specialist in the manufacture of precision steel pipes and tubes, has been using a manual process to place a radius on its stamping tools. Within the framework of its continuous process optimisation programme, the company recently replaced this manual operation with an automated Rösler R 4/700 SF drag-finishing system. By deploying the single-piece, dry, drag-finishing process, the usable life of the stamping tools at least doubles. For some tools, up-time can even increase by a factor of 10. For this reason, return on investment (ROI) is well below two years.

Adding edge radii to tools is an ideal application for drag-finishing technology. This mass finishing system allows the precise, targeted surface finishing of high-value, complex workpieces. Exactly defined process parameters guarantee repeatable finishing results, reports Rösler.

“From my previous occupation at a supplier of motorsport components I knew that Rösler builds such equipment,” says Hannes Winkler, assistant to the plant manager. “That’s why I contacted them first. Of course, we also contacted other suppliers of mass-finishing equipment and asked them to run processing trials.”

In the end, Voestalpine Rotec chose the R 4/700 SF system because Rösler was the only supplier that could offer a dry finishing process.

“The dry solution eliminated the water cleaning system required with the wet processing alternative,” explains Winkler. “This reduced not only the capital expenditure, but resulted in lower operating costs. Of course, the quality and long service life, as well as the high availability of the Rösler equipment, also played an important role in our decision.”

For further information
www.rosler.com

Danish cutting-tool manufacturer, TN Værktøjsslibning (TN Slib), has invested in a Vollmer VGrind 340S tool-grinding machine.
“We see great potential in our collaboration with Vollmer, both now and in the future,” says Torben Nielsen, founder, owner and CEO of TN Slib. “When we met at EMO 2019, we particularly liked the friendly, in-depth exchange in which we discussed optimising the grinding machines for our specific requirements.”

TN Slib makes around three-quarters of its sales in the production of bespoke, solid-carbide tools. The company also offers standard tools for cutting metals such as steel, aluminium, cast iron or copper.

Using the VGrind 340S grinding machine, the company seeks to drive forward the development and production of small milling cutters and somewhat larger drill bits with diameters of between 0.3 and 8 mm. Delicate tools like these are in increasing demand from the manufacturing industry because of the ever-tighter spaces encountered in mobile devices, medical equipment and automotive technology.

Vollmer designed the VGrind 340S especially for machining small solid-carbide cutting tools. With its two vertical spindles for different grinding wheel sets, the VGrind 340S allows for multi-level machining. This capability enables TN Slib to cut down on non-productive time and further improve tool quality. Five optimally configured CNC axes achieve interpolation with short travel distances for the linear and rotational axes, which in turn reduces the time required to machine workpieces and allows for tight tool tolerances.

A key factor in TN Slib’s decision to purchase the VGrind 340S was that the machine has the versatility to produce both small and large batches. The NUMROTOplus software enables 3D simulation of production processes and makes it possible to carry out collision monitoring in advance.

For further information
www.vollmer-group.com