Internal Traverse Grinding of Axisymmetric Parts with Electroplated CBN Grinding Wheels

Marschalkowski, K.^{1, a}; Biermann, D.^{1, b}; Weinert, K.^{1, c}

1)

Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 301, 44227 Dortmund

a) marschalkowski@isf.de; b) biermann@isf.de; c) weinert@isf.de

Kurzfassung

In this paper, investigations on the use of electroplated grinding wheels in internal traverse grinding under high speed conditions are presented. It shows that with this grinding technology, not only the high potentials of such wheel types can be utilised to achieve an enormous enhancement of the performance in internal grinding, resulting in even higher material removal rates than those in hard turning. Applying this internal traverse grinding technique, the production of smooth surfaces and narrow tolerances using such wheels in only one stroke is also possible. Major reason behind that is the use of axial feed kinematics, similar to that in hard turning with a combined roughing and finishing process, accomplished by a functional partition of the grinding wheel with a conical roughing zone and a cylindrical finishing zone. This finishing zone is modified by a touch-dressing operation to achieve a high surface finish. To detect the initial contact between dressing tool and grinding wheel acoustic emission is made use of. The small contact area between the thin grinding wheel and the workpiece thus leads to low mechanical loads even at high material removal rates. In addition, the traverse kinematics offer the potential of an enhanced machining flexibility. Besides the bores, cones and plane faces can be ground in one setup, using only one grinding wheel.

Schlüsselwörter

High speed grinding, high performance grinding, internal grinding, internal traverse grinding, electroplated CBN-wheels, gear wheel production

Veröffentlichung

In: Proceedings of the PEDAC '09, 9th International Conference On Production Engineering, Design and Control, 10.2.-12.2. 2009, Alexandria, Egypt, digital veröffentlicht