Sándor Bodzás

The Production Geometric Analysis of the New Type, Spiroid Worm Gear Drive Having Arched Profile

In the last few decades in Hungary, the Budapest University of Technology and Economics and the University of Miskolc have been intensively focusing on the research field of worm gear drives [2, 5].Our results at the University of Miskolc have also been published in a book published in the USA as well [2].A new geometric worm gear drive has been developed, that is the conical worm gear drive having arched profiled in axial section [3].The aim of our publication is to present the advantages, the geometric questions and the possible application fields of this new type worm gear drive.Copyright

Computer aided designing and modelling of X-zero gear drive

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.

Designing, Modelling, Geometric and Noise- and Vibration Analysis of New Type Spiroid Worm Gear Drive

We have carried out a new geometric type spiroid worm gear drive having arched profile in axial section. We prepare the computer aided model (CAD) of this gear drive for other geometric and production analysis. The objectives of the publication are measuring of this spiroid worm using three coordination measuring machine and after doing noise analysis of this gear box.

Finishing production of spiroid worm shaft by varied centre distance and by appling grinding wheel banking angle correction

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.

Comparative finite element method analysis of two spiroid worm gear drives having different profiles

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.

Analysis and CAD modelling of a new geometric spiroid hob

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.

Application of the general mathematical model for CAD modelling of cylindrical and conical worm gear drives

Based on the general mathematical model of Dudas [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.

Mathematical model to determination of resharpening territory of Conical Hob

Based on the general mathematical model of Illes Dudas which is appropriate for mathematical modelling of production technology methods we have worked out a model for resharpening analysis of conical hob. After the hob resharpening using numerical calculations the determination of the tooth surface of face gear by cutting edges is necessary for the analysis. Based on this methods we could calculate the permissible critical angle of the hob and the profiles of the hob and the face gear in axial section. The permissible critical angle of the hob is the critical angle the hob cutting edge of which manufactured face gear profile is situated in the permissible profile error tolerance. We have worked out a new geometric conical worm gear drive that is the conical worm gear drive having arched profile. Using this mathematical model we have done resharpening analysis for the hob having arched profile and determined the permissible critical angle.

Connection Theory of Conical Worm Gear Drives

We worked out a mathematical modell for the production geometry and mathematical analysis of spiroid worm gear drives. This modell is adapted for analysis of spiroid worm gear drives with random profile. Using this modell it could be possible for defining of the equations of cog surfaces, the surface normal vector, contact curves and connection surface in one concrete case.

Designing of Smoother Hob

It is important to know the main characteristics of production geometry of the hob for the precise and appropriate quality production, since the various cog wheels, worm gears are produced with this tool. The hobs have complicated geometry and are expensive tools so the production is very expensive.