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Turn-Key Solution for Internal and Bore Grinding

The DVS Technology Group and its subsidiaries are offering a turn-key solution for internal and bore grinding. The iCompact from Buderus combines a modern design, solid construction and efficient hard finishing technologies within a small footprint of 7.5 sq. m.

To get the most out of the machine, the abrasives specialists at DVS NAXOS DISKUS have developed an entire series of vitrified bonded diamond and CBN grinding wheels that are tailored to the grinding process required for the iCompact, which provides the foundation for further increasing the precision and repeatability of the machine tool processes. The wheels enable the processing of materials with hardnesses in excess of 60 HRC and also help to decrease the dressing and profiling intervals on the iCompact. Optionally, the grinding wheels can be manufactured straight and with a coarse profile in order to reduce the time required for wheel changeovers.

DVS NAXOS DISKUS offers cubic boron nitride (CBN) grinding wheels that are designed to maximize the service life when it comes to grinding bores. "The CBN grinding wheels from DVS NAXOS DISKUS combine high process stability with higher cutting performance. Compared to conventional abrasives, such as corundum or silicon carbide, these grinding wheels have a much longer service life and never lose quality," said Mario Arnold, Technical Manager and member of the management board of DVS NAXOS DISKUS at the Butzbach plant. "What is more, we adapt the specifications individually for the various applications of our customers. This allows us to design the right grinding tool for our customers for every application."

DVS NAXOS DISKUS offers different disc variants that can be used with the new abrasive grain generations for internal grinding. "When it comes to internal grinding, CBN offers another advantage over corundum: tools made of CBN can be produced in small diameter ranges. Corundum grinding wheels max out their geometric production limits faster," said Arnold.

The first users of this technology are from the DVS technology group, where the quality requirements are very strict. "We see a lot of opportunity in the eMobility sector and with manufacturers of industrial gears," Arnold said. "Electric drives require gears and shafts with extreme surface qualities. This can only be achieved with high-quality internal grinding tools."

"Vitrified bonded CBN and diamond grinding wheels made in-house at NAXOS DISKUS are the best choice when highly efficient production is critical for the machining of individual or series parts for the automotive industry, hydraulic components, injection nozzles for combustion engines, products made of technical ceramics, parts that are coated using the HVOF process and numerous components for future mobility," said a spokesperson.

The product range from DVS NAXOS DISKUS includes cylindrical grinding wheels or grinding wheels based on user drawings. They can be mounted via the bore or on a steel or carbide spindle. To find the ideal grinding solution in each case, application engineers work in close cooperation with the customer.

Dressing tools made of CBN and diamond complement the product portfolio of DVS NAXOS DISKUS. They are used for the economical dressing of grinding wheels in different bonding systems. "When used in the Buderus iCompact, they offer maximum accuracy in the dressing process," said the spokesperson. "Grinding wheel dressing produces precise concentricity and a correct geometric shape on the grinding wheel. Dressing is also used for profiling or calibrating grinding wheels. It also removes impurities from the grinding wheels caused by material abrasion and the blunted abrasive grits, and it lays bare sharp abrasive grits. This reduces heat generation during the grinding process and keeps the required removal rate steady."

Diamond dressing rolls have different diamond designs. "Today, industrial diamonds made of MKD, CVD and PCD are increasingly taking the place of natural stones," said the spokesperson. "This is because the defined shape of industrially manufactured diamonds ensures a steady and reproducible quality over the entire service life. But CNC-controlled form rolls are used particularly for small- and medium-sized series or prototype applications because CNC control facilitates changes in the production process. This keeps the workpiece-related dressing costs down and drops the price per piece to a minimum. Since the introduction of CNC-controlled dressing processes, the number of CBN and diamond form dressing rolls on the market has increased significantly. For users, it has become virtually impossible to select adequately between all available variants. This is why the abrasive plants, in close cooperation with the sister companies DVS Tooling and Buderus Schleiftechnik, are looking to reduce the wide variety available. The goal is to keep the warehousing effort feasible and enable cost-effective tool production. The companies of the DVS Technology Group are thus optimizing the grinding processes of their customers in terms of economics.

Forming rolls in natural and CVD diamond designs are mainly used for conventional grinding wheels. DVS NAXOS DISUKS is also offering various models of self-sharpening tools for extremely tough grinding wheel applications. Through the precise coordination between the dressing tool and the machine-integrated dressing spindle, they enable the highest concentricity accuracy, the company reported.

For more information contact:

DVS Technology America Inc.

44099 Plymouth Oaks Blvd., Ste. 102

Plymouth, MI 48170


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