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  • Author or Editor: S. Bodzás x
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The objectives of this publication are the analysis of surfaces and edges of a new geometric spiroid hob with arched profile in axial section and the definition of their equations for computer modelling. On the basis of this we will work out the CAD model of hob for our further geometric calculations.

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The aim of the publication is the computer aided designing process of the X-zero gear drive. Determination of the geometric parameters and correlations are necessary for the designing process. A computer program has been carried out for the designing process, using which an arbitrary X-zero gear drive could be analysed and modelled. Using this program a concrete geometric gear drive is designed. The CAD models are designed for later connection, geometric and tooth contact (TCA) analysis.

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In our publication, more than one basic toothed gear pairs have been designed and modelled. Normal tension dispersions – appearing in the contact zone of the drive pair – and their measure on contact tooth surfaces have been analyzed by the effect of a given moment load. During designing the numbers of the teeth of the gear pairs have been chosen equal, but the modules of the pairs have been different. We analyze how normal tension values form on the tooth surfaces of the gears in the contact zone of the tooth and on their root zone as a function of the change of the module in the case of the same meshing method, loads and boundary conditions.

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With the knowledge of the advantageous characteristics of the cylindrical worm gear drives having arched profile in axial section and the conical worm gear drives having linear profile in axial section, a new geometric type conical worm gear drive has been designed and then manufactured, that is the conical worm gear drive having arched profile in axial section. Under same load and boundary conditions in case of the same geometric spiroid worm gear drives having arched profile and having linear profile in axial section we have done comparative finite element method analysis for evaluating the strains, deformations and stresses of this gear drives.

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Based on the general mathematical model of Dudás [3, 4] — which is appropriate for mathematical modelling of production technology methods and various toothed gear pairs — we have generated mathematical models which are appropriate for determination of tooth surface points of face gear and worm gear connection with conical and cylindrical worm by numerical way. After doing the necessary calculations, the CAD models of the worm gear drives could be generated. Based on these there is an opportunity for rapid prototyping (RP) technology for other connection and production geometric analysis.

For the verification of our calculated results, we generate CAD models of one to one given geometric conical and cylindrical worm gear drives for other analysis.

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The objectives of this publication are to present a production technology which is a finishing production of conical worm using changing of centre distance between the worm and the grinding wheel and banking angle correction at the same time. We will determine the necessary optimum grinding wheel profiles for the manufacturing in light of the production tolerances. We will determine the function connections between the main production parameters.

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