Vollmer’s VPulse 500 wire-erosion machine has been equipped with additional functions to dress diamond grinding wheels using erosive methods.

Another advantage of Vollmer’s latest technology is that using a hydrocarbon-based dielectric protects the clamping systems of the wheel packages from corrosion.
The method of how metal-bonded diamond grinding wheels are dressed determines their removal rate and operating life. When these wheels are dressed mechanically, the diamond grains partially lose their sharpness and break away easily. This effect results in only moderate grain protrusion, which does not allow the metal-bonded grinding wheel to be used at its optimum operating point. The solution of contactless spark erosion yields structure and retaining force in the diamond grains.
Dr Stefan Brand, CEO of the Vollmer Group, says: “Metal-bonded diamond grinding wheels are increasingly being used in tool machining. To improve their removal rate and operating life, spark eroding is the recommended dressing method. At the EMO 2019 exhibition in Hanover, we demonstrated for the first time how grinding wheels can be dressed using erosive methods with our VPulse 500.”
Unlike other eroding processes, the VPulse 500 uses a hydrocarbon-based dielectric, meaning that the sensitive clamping systems on the grinding wheel packages do not require special protection. With its five-axis kinematics, the VPulse 500 automatically measures and erodes every diamond grinding wheel.
As a benefit of the fine eroding wire, even complex geometries can be machined on the grinding wheel in one set-up. Internal testing of the VPulse 500 at Vollmer has shown that, compared with mechanical methods, the operating life of metal-bonded grinding wheels can be improved significantly. In addition, the removal rate is enhanced as a result of the open-pored grinding wheel with grain-free regions.
“Customers have the option of equipping the VPulse 500 with four different workpiece storage solutions, enabling up to 68 grinding wheel packages to be processed unmanned, around the clock,” says Brand. “This is irrespective of whether companies are manufacturing or re-profiling diamond grinding wheels.”
For further information www.vollmer-group.com

The TungForce-Feed line of indexable, small diameter, high-feed milling cutters has been expanded by Tungaloy to include R2 inserts that feature a corner radius of 2 mm.

Available in diameters of 8, 10, 12 and 16 mm, the TungForce-Feed line is pitched as an economic profiling solution for the mould and die industry when compared with conventional solid end mills and indexable tools of similar size.
During the creation of a CAM program for the high-feed machining of complex 3D profiles in typical mould-making applications, it is common to use a theoretical corner radius for programming the insert radius. However, this method leaves excessive stock on the workpiece after machining, adding processes.
Looking to generate the ideal platform for subsequent finishing processes, many job shops are using solid-carbide square-end mills with large radii during roughing. The latest R2 insert requires no programming for the theoretical corner radius, as its 2 mm corner radius leaves no uncut material on the machined surface. This concept ensures that the TungForce-Feed series makes a good replacement for costly solid-carbide end mills.
Featuring an insert design that is 10% thicker than competitor products, the TungForce-Feed line is built to perform at higher machining parameters by withstanding fracture forces. The insert design incorporates a positive inclination angle for smooth chip evacuation which further reduces cutting forces by controlling chip formation, especially when shoulder and slot machining.
Designed for face and shoulder milling, as well as helical interpolation and ramping, the close insert pitch makes the TungForce-Feed line a good option for all milling applications. The series has been designed with a small entry angle for chatter stability that improves efficiency and tool life, even when machining in long-reach areas, says Tungaloy.
For further information www.tungaloyuk.co.uk

As a manufacturer of small workpieces, St Petersburg based Laguna has more than 100 machine tools, including 25 Tornos Swiss-type lathes. Part of the company’s ongoing investment strategy has now seen the arrival of a Tornos Swiss GT 13.

The machine incorporates six-axis kinematics that make it suitable for complex parts. Laguna manufactures everything from connectors through to bolts, screws and much more for the electronics, instrumentation and control, automotive, aerospace, medical, transport, and telecommunications sectors. The installation was undertaken by Politek Co Ltd, the Tornos dealer in Russia.
For further information www.tornos.com

Ward Hi-Tech has supplied and installed a large Kiheung KNC-U1200N universal bed mill from stock to a major multinational company in Ireland.

The machine, which has a fully automatic universal head, Heidenhain control, 4100 mm X axis, 1250 mm Y axis and 1350 mm Z axis, also has a 24-station ATC (automatic tool changer) and through-spindle coolant.
With its ability to accommodate parts weighing up to 10 tonnes on the table, the Kiheung KNC-U1200N is purposely designed for heavy-machining operations. Ward Hi-Tech reports that the machine is now up and running and exceeding the customer’s performance expectations.
For further information www.wardhitech.co.uk

Markaryd-based Nibe, which manufactures Contura fireplaces and Premodul chimneys, has recently invested in two press brakes from SafanDarley, an E-brake Ultra E130-3100 and an E-brake Econic E40-1600, supplied by local agent Din Maskin.

“When we decided to invest in new press brakes, we wanted machines that would provide stability in the manufacturing process, give consistent results and allow us to use the same tools as before,” says Patrik Ahlin, production group manager at Nibe. “ The machines also needed to be ergonomically designed, where the operator wouldn’t need to handle heavy tools. This is exactly what SafanDarley’s press brakes offered.”
Stefan Kovac, the press brake operator who was involved in test-running SafanDarley’s machines ahead of the investment, adds: “I’m delighted with the machines as they run quietly and smoothly. The tool set-up has worked well for the majority of our parts.”
According to Fredrik Carlsson, product manager for SafanDarley at Din Maskin, the servo electric press brake has low maintenance and running costs, and is quiet in operation. Since the machine does not use hydraulic oil, servicing is also minimal, and the lack of a hydraulic system means even higher precision and more consistent bending results.
Ahlin also emphasises the ‘green’ aspect, since Nibe is very active in its environmental work. The company is always trying out new ways to reduce its energy consumption and it is therefore important that its manufacturing is modern, resource-saving and efficient.
Herman Nordqvist, production engineer for welding and brake pressing, says that another important aspect was ease of set-up, since newly developed fireplace models are launched regularly and therefore new parts need to be produced.
“Here at Nibe, we work together closely in the development process to ensure we only get better,” concludes Ahlin.
For further information www.safandarley.com