Dipl.-Ing. Michael Hirsch
Dipl.-Ing. Michael Hirsch has since 2006 been a project engineer in the pre-development department for Profiroll Technologies GmbH, having joined the firm soon after gaining his degree at Technische Universität Chemnitz. While at Profiroll Hirsch's work focus has included profile and gear rolling, die calculation and die optimizing, and FEM simulation; e.g., rolling process and die development. (Bio last updated 2017-09-01 Contact Randy Stott, Managing Editor, with changes.)
Articles by Michael Hirsch
- Wear Investigation of Finish Rolled Powder Metal Gears (September/October 2017)
When manufacturing powder metal (PM) gears lead crowning is not achievable in the compaction process. This has to be accomplished either by shaving, grinding or honing. Each of these processes has their merits and draw backs. When employing rolling using a roll burnishing machine lead crowning can be accomplished but due to errors in profile a hard finishing operation such as grinding is used by the industry. In this paper a helical PM gear that has sufficient tolerance class after rolling has been tested in a test rig for durability and the wear has been studied.