Analysis of the wormwheel toothing accuracy

Abstract

Original scientific paper The article presents a mathematical model for the determination of the tooth surface of the wormwheel machined by either the tangential or the radial method. Wormwheel machining with a special hob and a modular hob is considered. Different methods of solving the task are presented. This includes also a numerical method that requires the envelope condition to be solved. The described discussion is general in nature. The tool action surface, built based on the worm mating with the wormwheel in the worm gear, may have an arbitrary profile. In the technological gear, made up by the tool and the wormwheel, the rotary motion of the wormwheel was exchanged for its rectilinear motion. The tool positioning errors in the machining process were taken into account. Keywords: envelope method; worm gear; wormwheel Analiza točnosti ozubljenja pužnog kolaIzvorni znanstveni članak U radu se predstavlja matematički model za određivanje površine zubi pužnog kola obrađenog bilo tangencijalnom bilo radijalnom metodom. Razmotrena je obrada pužnog kola specijalnim pužnim glodalom i modularnim pužnim glodalom. Predstavljene su različite metode rješavanja zadatka uključujući i numeričku metodu koja zahtijeva rješenje stanja ovojnice. Opisana rasprava je općenite prirode. Radna površina alata, izrađena na osnovu puža spojenog s pužnim kolom u pužni zupčanik, može biti proizvoljnog profila. U tehnološkom zupčaniku, sastavljenog od alata i pužnog kola, rotacijsko gibanje pužnog kola je zamijenjeno pravocrtnim gibanjem. U obzir su uzete greške pozicioniranja alata u postupku obrade.

Normal deformation and stress analysis of the tooth roots in case of different worm gear drives

“…The geometric calculations were done by GearTeq software. Knowing of the references' recommendations [3,5,7,8,9] the user can set the input designing parameters and have the software calculate all of the geometric parameters. After that the CAD (Computer Aided Design) models could be done by SolidWorks software (Figure 2).…”

“…The Archimedean cylindrical worm gear drives are widely used in different constructions where the bypass axes position and the high transmission ratio is required [3,4,5,7,8,9]. The worm could be manufactured by turning and grinding technologies.…”

Geometrical Analysis of Composite Hobs

“…The development of technology and materials science has contributed to the emergence of hobs made wholly of sintered carbides (small modules) and of composite hob designs with cutting inserts made of super-hard materials (such as sintered carbides, ceramics, borazon, diamond) embedded in a body made of high-speed or tool steels (Figs. 2, 3), presented in [2,8,[9][10][11][12]. Jaster, [7], investigated the use of state-of-the-art universal multi-purpose multi-axis CNC machine tools in the manufacture of gear wheels.…”

Assessment of Probability of Gear Tooth Side Wear of a Planetary Gearbox

“…Research following this direction is continued by [9,10], yet a number of questions in this rather complex field remain unanswered. Papers [11][12][13][14][15][16] describe wear damage, type of gear tooth wear, their interaction, occurrence and identification.…”