Papers by Keyword: Gear Wheels

Abstract: The article considers the technology of producing and processing of gear wheels. It provides some requirements for gear units, in particular, for gear wheels and their production. The paper analyzes the effectiveness of various techniques for cutting the gear teeth, as well as the effectiveness of various modern tools used for gear-tooth milling. The article mentions that it is possible to increase the effectiveness of the tool due to simultaneous processing of two or three tooth spaces. It requires the use of full-duplex (tandem) and triplex interlocking disk milling cutters. The results of these studies are confirmed by the description of a number of practical examples implementing these reporting provisions upon use of the equipment described in the paper.

Abstract: In this paper we try to find a better methodology to transform a file obtained from 3D scan (precessional gear wheel), which can be used only as a copy, into a file with functional extension. Transformation will result in surfaces and geometric objects that can be manipulated and compared to each other, with the aim of find deviations between ideal 3D models and the real ones. The methodology is relative simple: the triangular surfaces which form the shell of object should be approximated by flat, cylindrical, conical, etc. surfaces interlinked and filling the empty space between them with material.

Abstract: Selection of proper technological surface layer well resistant to cyclic external loads superposed onto residual stresses is presented in this paper, with a gear wheel taken as an example. The computer simulations of external loads were carried out by means of the FEM method (Finite Element Method) with the use of the ANSYS package. Residual stresses were measured by means of the Waisman-Philips and modified X-ray sin2Ψ method. The results of the stress superposition were verified experimental by with use of a circulating power stand. The applied low pressure nitiriding method NITROVAC demonstrated a high ability to increase the durability and reliability of the discussed toothed wheel in comparison with the convencional treatment applied so far.