Nissei Industry from Japan has been developing vertical and horizontal double-disc grinding machines for more than 40 years. Among other things, these machine concepts are for grinding hard materials, one of the company’s core applications in the Asian market. One specific application is the surface grinding of indexable inserts made of carbide, cermet or ceramic. Nissei presented a machine optimised for this purpose, the VP3-400RW, at the recent GrindingHub exhibition in Stuttgart, Germany.

When grinding indexable inserts, the demands on the mechanical and thermal stability of the processing machine are particularly high. The unit from Nissei has the corresponding rigidity, and this with a comparatively compact design. Thickness variations of the ground indexable inserts with capability values of Cp/Cpk of well over 4 are achievable with dimensions of 6.33 ±0.13 mm, for example.

As the main drives for the two 400 mm diameter diamond grinding wheels, the VP3-400RW contains two AC spindle motors delivering 15 kW each. The internal workpiece feeder, which has a 180° swivel function and linear oscillation, features AC servomotors for high dynamics and fast set-up.

The control of the VP3-400RW is by FANUC, allowing various machining modes such as simultaneous grinding of both sides of the workpiece or grinding of the sides one after the other, as well as grinding of only one side. It is possible to store and automatically call-up the respective machining parameters for different types of indexable inserts. Another important feature is the fully automatic dressing device, which can correct the shape on both grinding wheel surfaces simultaneously if necessary.

Nissei presented the VP3-400RW at GrindingHub as a co-operation partner of Nagel.

More information www.nagel.com

As a company with a heritage of ongoing product development and innovation, Telsonic has recently launched its new DCG cleaning generator, which the company says delivers powerful ultrasonic energy for industrial cleaning applications.

The new DCG is a high-power cleaning generator that is compact in design and suited to use in harsh operating environments. Telsonic designed the generator’s inputs and outputs especially for system integration, offering all possible external control options. A further important feature of the DCG generator is high compatibility with its ECO predecessor. The new DCG does, however, benefit from new functions, such as analogue inputs and outputs. These I/O are compatible with popular industry standards, which allow the cleaning process to provide important feedback.

A number of generator variants are available with options for 25 or 40 kHz frequency, and maximum power levels between 800 and 2400 W, together with a supporting range of tube resonators from 340 to 1180 mm depending upon the variant selected.

Application areas for the DCG ultrasonic generator include cleaning production level or finished components, and as part of maintenance procedures. The range of industries that can tap into the advantages of the technology includes automotive, aerospace, medical, electroplating, precision engineering, power stations, metal and aviation, to name but a few.

Telsonic UK offers a comprehensive range of ultrasonic modules and systems for a variety of plastic and metal welding, cutting, sealing, cut and seal, sieving and cleaning applications.

More information www.telsonic.com

Following the success of the UltraTEC A25, A100 and B10 ultrasonic deburring systems, Vollmer UK is launching the new A25S. UltraTEC is part of the Vollmer Group and has won a string of awards for its patented ultrasonic deburring technology that only uses water.

Formed in 2019, UltraTEC offers proprietary technology that utilises an oscillating ultrasonic horn to generate soundwaves and cavitation for cleaning and deburring external and internal edges reliably. The environmentally friendly solution uses water to provide sharp-edged burr-free parts that are often impossible to process via alternative methods.

Suitable for small to medium-sized components, the UltraTEC ultrasonic A25S creates a formation and dissolution/implosion of bubbles in the water that releases intense energy. This energy arrives courtesy of ultra-high oscillation at 20 kHz with an oscillation width of ±80-120 µm, which far exceeds the amplitude of ultrasonic cleaning, cutting and welding technologies.

The new A25S takes the innovation of UltraTEC’s previous models and offers more rigidity, vibration dampening and thermal stability with a welded steel machine base filled with mineral concrete. This base creates a more robust platform, ensuring enhanced machine kinematics, component quality and repeatability.

Improved stiffness and a heavier base are the foundation blocks for a welded steel machine frame that replaces the aluminium version on previous models. The new steel frame also improves operator access and ergonomics, while creating a streamlined and futuristic machine appearance. This structure also incorporates a new PE500 confetti structure insulation that supersedes the previous machine insulation to yield better noise insulation and extend machine life with its water-resistant characteristics.

More information www.vollmer-group.com