M.Sc.

Ganser, Philipp

Filters

2 1
Reset filters

Settings
Now showing 1 - 3 of 3
  • Publication
    Knowledge-Based Process Design Optimization in Blisk Manufacturing
    ( 2022)
    Landwehr, Markus
    ;
    Ganser, Philipp
    ;
    Vinogradov, Georg
    ;
    Bergs, Thomas
    The manufacturing process of blade-integrated disks (blisks) represents one of the most challenging tasks in turbomachinery manufacturing. The requirement is to machine complex, thin-walled blade geometries with high aspect ratios made of difficult-to-cut materials. In addition, extremely tight tolerances are required, since the smallest deviations can lead to a reduction in efficiency of the blisk in the later use. Nowadays, the ramp-up phase for the manufacturing of a new blisk is time and cost-intensive. To find a suitable manufacturing process that meets the required tolerances of the blisk, many experimental tests with different process parameters and strategies are necessary. The used approach is often trial and error, which offers limited testing opportunities, is time-consuming and waste of resources. Therefore, the objective of this paper is to develop a knowledge-based process design optimization in blisk manufacturing. For this purpose, this paper picks up the results from our previous work. Based on these results, an experimental validation of the two process design tasks “number of blocks” and “block transition” is conducted. As part of the validation, the results of machining tests on a demonstrator blisk made of Inconel 718 are presented and discussed.
  • Publication
    Investigations on five-axis milling and subsequent five-axis grinding of gears
    ( 2022)
    Bergs, Thomas
    ;
    Schneider, Sebastian A. M.
    ;
    Janßen, Christopher
    ;
    Jahnel, Kirk
    ;
    Ganser, Philipp
    ;
    Brimmers, Jens
    High-productivity processes such as gear hobbing and gear grinding are normally used in the manufacturing of gears. In some applications, however, the use of these processes is not possible due to accessibility. One example is the production of planetary gears with double helical teeth for the gear box in modern aircraft engines. The gear boxes are used to increase the efficiency of the engines but should be as light and compact as possible. Thus, the tool runout area for gear hobbing or gear grinding tools is too small. One way of manufacturing these gears is five-axis machining. While five-axis milling of gears has been the subject of several publications, five-axis grinding of gears has hardly been a topic. This paper presents the results of investigations on five-axis milling and subsequent five-axis grinding of gears in comparison to conventionally manufactured gears. For this purpose, after hardening, gears were first five-axis milled and then five-axis ground using different process parameters and then investigated on back-to-back test rigs regarding load carrying capacity. In addition, the dimensional accuracy was measured and the surfaces were examined metallographically. The dimensional accuracy became worse after five-axis grinding. However, in terms of gear life, the five-axis milled and then five-axis ground variant showed an increase of 8.2 % compared to the conventionally manufactured gear which indicates a high potential for further research in regard to the presented five-axis machining process chain of gears.
  • Publication
    Investigation of cutting mechanisms in the machining of Ceramic Matrix Composites (CMCs)
    ( 2021)
    Bergs, Thomas
    ;
    Ganser, Philipp
    ;
    Fruh, Daniel
    ;
    Reisberg, Jannik
    Ceramic Matrix Composites (CMCs) are increasingly used in numerous engineering fields, e.g. the aerospace, automotive, energy & nuclearindustry due to their higher permissible material temperature and their lower weight compared to metallic materials. Thanks to the quasi-ductilematerial behaviour, it is possible to carry out time- and cost-efficient finishing with a geometrically defined cutting edge.In this study the cutting mechanisms are analysed in fundamental cutting tests on an orthogonal cutting test bench by variance of the undeformedchip thickness. For the evaluation cutting force measurements, high-speed recordings, surface qualities measurements and chip analyses were conducted.