Dr. Mattias Svahn
Mattias Svahn works as a mechanical development engineer for BorgWarner in Landskrona, Sweden. He earned his Ph. D in 2016 at the Division of Machine Elements in the Department of Mechanical Engineering, Lund University, Sweden. (Bio last updated 2018-02-08 Contact Randy Stott, Managing Editor, with changes.)
Articles by Mattias Svahn
- Gear Tooth Surface Roughness of Helical Gears Manufactured by a Form Milling Cutter (September/October 2015)
Manufacturing involute gears using form grinding or form milling wheels are beneficial to hobs in some special cases, such as small scale production and, the obvious, manufacture of internal gears. To manufacture involute gears correctly the form wheel must be purpose-designed, and in this paper the geometry of the form wheel is determined through inverse calculation. A mathematical model is presented where it is possible to determine the machined gear tooth surface in three dimensions, manufactured by this tool, taking the finite number of cutting edges into account. The model is validated by comparing calculated results with the observed results of a gear manufactured by an indexable insert milling cutter.
- The Influence of Tool Tolerances on the Gear Quality of a Gear Manufactured by an Indexable Insert Hob (July 2014)
Recently, a new type of hob with carbide inserts has been introduced, providing higher cutting speeds, longer tool life and higher feed rates when compared to re-grindable, high-speed steel hobs. But with this kind of hob, new challenges occur due to positional errors of the cutting edges when mounted on the tool. These errors lead to manufacturing errors on the gear teeth which must be controlled. In this paper, the tooth quality of a gear manufactured by hobs with different quality classes is analyzed using a simulation model in combination with Monte Carlo methods.