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OTEC Stream Finishing For High Output Punching Dies

Punching dies, like all other punching tools, must meet high demands. A punching die’s surface quality is essential for smooth and efficient stamping, which is why the surface processing methods for these tools are constantly being refined. OTEC offers stream finishing machines and process technology for efficient and optimal surface processing of punching dies. 

The aim of surface processing is to achieve a smooth, flawless contoured surface as the ideal basis for subsequent coating processes. Surface roughness greatly affects the durability and effectiveness of the anti-wear coating of tools like punching dies. The optimum combination of tool coating and polishing can greatly enhance tool quality.

OTEC’s special stream finishing process can smooth punching die surfaces, perfectly preparing them for the coating. Droplets are removed and the tool is polished after the coating process. The interaction between processing with an OTEC stream finishing machine and the coating process can increase the tool’s output tenfold. Thanks to stream finishing, the coating adheres better, which protects the tool against wear. Processing additionally enhances the punching die’s surface quality. 

The stream finishing process is ideal for targeted processing of specific workpiece areas. 

The special design of OTEC’s steam finishing machines allows the flow angle to be adjusted to the grinding or polishing media, combined with a contour controlled motion sequence, this directs the flow to selected areas only. This enables control of material abrasion, down to the micrometer level. The process is characterized by high media flow speeds, which enable highly intensive processing with process times as short as a few minutes. 


Contact us today to request sample processing of your punching dies.

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Stream Finishing For Skiving Cutters

Skiving cutters are used in the production of gear wheels. When producing gear wheels, the desired geometry is achieved by a process known as gear skiving, which combines the two traditional processes of gear hobbing and gear shaping. Skiving offers a high degree of productivity and flexibility, and compensates for the drawbacks of the two traditional processes. Compared to gear shaping, gear skiving significantly reduces processing time. With gear skiving, the axes of the workpiece and tool are not parallel but intersect at an angle. Productivity is proportional to the angle of intersection. When the tool rolls off the workpiece, the relative movement created by this angle is used to achieve the cutting speed. The high relative speeds place great demands on the machine technology used and the spindles of the tool and the workpiece must be synchronized. As an industrial application, skiving has been used for more than a century, but it has taken the development of stable and fully synchronized machines to realize its full potential. Surface treatment is essential to enhance the precision and durability demanded of modern skiving cutters and make the process more efficient. 

With its stream finishing process, OTEC offers a machine solution for the surface treatment of skiving cutters. The skiving cutters are clamped in the machine and lowered into a container filled with abrasive. Processing is carried out by both the rotation of the container and the movement of the workpiece in the media flow. Processing can be precisely aligned to specific points on the workpiece. The intensive forces generated by OTEC’s stream finishing machines enable perfect results even in hard-to-reach places. Polishing and rounding of gear wheels in the stream finishing machine usually takes only a few minutes. 

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OTEC’s stream finishing process saves an enormous amount of time compared to conventional processes like blasting. By making the cutting edge uniform and reducing chipping, the service life of the tool can also be greatly extended in most cases. Surface processing focuses on low chipping and a uniform rounding of the tooth heads and edges. Polishing and smoothing the cutting surfaces in the tooth profile allows chips to flow off better during gear wheel production. The smooth surface also significantly improves the coating adhesion of carbide layers to be applied. 

Contact us to learn more or request sample processing. 

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OTEC’s EPAG-Smart: The Ideal Solution for Dental Laboratories

OTEC’s compact electropolishing machine the EPAG-Smart is capable of perfectly smoothing and polishing dental parts in just one step. It’s able to remove the smallest of scratch marks and waviness in a repeatable process without compromising tolerances or geometries.

Some of the benefits of OTEC’s EPAG-Smart include:

  • Homogeneous processing even on geometries that are difficult to access
  • No deformation because of the single part processing
  • Automation reduces processing work by up to 80%
  • No compromise on tolerances or geometries
  • Repeatable processes
  • Combines multiple steps into one process
  • Very efficient in terms of processing time and cost

Contact us today to request sample processing of your dental parts.