Surface finishing processes from MAW reliably remove burrs from turned, milled, punched and fineblanked parts. The roughness of surfaces is improved in the process. Other topics include cutting edge microstructuring on cutting and punching tools. A solution for the automatic polishing of forming tools will also be presented.

Punching burrs are stubborn, especially if the tool has been in use for a long time. Basically, two technologies are efficient for deburring punched and fineblanked parts: planetary transfer brush deburring and micro centrifugal mass finishing. Micro vibratory finishing is a precise and safe technology for deburring small turned and milled parts.

Transfer deburring by means of planetary brush movements ensures that the burr is removed evenly on all sides with an adjustable fillet size. The brush deburring systems developed and produced by René Gerber are suitable for deburring one or both sides of magnetically clampable punched and fineblanked parts. Depending on the machine design, parts with a diameter of up to 400 millimetres are fed under the brush head via the transfer belt and deburred precisely regardless of the contour. The large selection of brushes and flap grinding tools opens up new ways of producing different surfaces and edge radii.

The micro centrifugal vibratory grinding process developed by Polyservice is suitable for small and thin precision parts. In this process, the parts are ground using centrifugal force by adding abrasives adapted to the process in the bulk material. The edges are deburred and rounded evenly on all sides. By selecting the right abrasive medium, surfaces can be polished to a mirror finish of Ra 0.025. This process is primarily used for small and micro parts in electronics and micromechanics with diameters of 0.05 to five millimetres.

Micro-vortex grinding is a process for deburring and polishing small parts using micro-abrasive media made from ceramic, stainless steel or copper. The addition of grinding powders and compound makes it possible to deburr small precision parts gently and evenly, round edges and improve surfaces. The process is explained using the example of an MR10 micro-vortex grinding vibratory finishing machine and the 30-liter P30 circular vibrator with new touch-screen control. The brush polishing technology developed by René Gerber is known worldwide as a reliable process for the defined cutting edge preparation of indexable inserts, thread cutters, drilling and milling tools as well as punching and fineblanking elements. This technology produces defined radii in the micro range. The cutting edge surface is also improved in the same process. pb