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SRB - Skiving Roller Burnishing

SRB - Skiving Roller Burnishing Process

Skiving is a hole finishing process used when very tight dimensional and geometrical tolerances are required. It is the fastest method to achieve surface finish having very fine peaks and valleys ideal for roller burnishing process. The Skiving Tool is basically a twin/multiple edge floating reamer which follows the existing bore. The Roller burnishing tool coldworks the surface by merging peaks & valleys thereby producing very high surface finish and also a hardened surface. Both Skiving and Roller burnishing processes can be done simultaneously by using combined Skiving cum Roller Burnishing Tool. This process is 8 – 10 times faster than honing operation. The Skiving blades and burnishing rollers are expanded hydraulically while rotating and feeding though the bore. At the end of the operation these are retracted and the tool is withdrawn. High pressure coolant is supplied to the tool through the annular area between the bore and the tube outer diameter. The coolant along with the chips is evacuated from the other side.
Profimach offers dedicated Skiving & Burnishing machines for high production scenarios. This setup can be accommodated in a BTA drilling machine.

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SRB: SKIVING ROLLER BURNISHING OF TUBES

THE MOST MODERN, MOST EFFICIENT, FASTEST AND MOST ECONOMICAL PROCESS TO RAPIDLY FINISHING THE INTERIOR TUBE DIAMETER (ID) FOR HYDRAULIC CYLINDER APPLICATIONS

Skive and Roller Burnishing is a modern process to rapidly finishing the interior diameter (ID) of a tube

to a hydraulic cylinder quality size and finish.

The production technology of skiving and roller burnishing is used for the manufacture of cylinder tubes. Among other aspects, the cylinder construction industry places great emphasis on resistance to internal pressure, such that the loss in customization can be kept as low as possible. Of course, the focus of attention is on the quality of the bore. Here, the requirements of the piston seals are decisive for the required values of the surface roughness and diameter tolerances. Skiving reduces diameter deviations and ovality caused by the raw stock. The rolling, which takes place in the same process, ensures the required internal diameter tolerances and asperity values.
Extensive series of tests by the well-known seal manufacturers have recognized rolling or even smooth rolling as a suitable production process for the seal running surfaces. However, the cost aspect is equally as important as the quality. Here, the great advantage of skiving and roller burnishing is in the rapid production of the tubes, which primarily reduces the price compared with honing. A further advantage of skiving and roller burnishing is in the long manufacture lengths that can be produced.