Depending on applied modifications to particular gear parameters, an appropriate type of a gear is generated (three types of a toothed gear have been assumed). Appropriate dialog box serves for modifying the type of a gear in a very convenient way. The modification automatically adjusts parameters of the gear. The software validates correctness of applied parameters on the stage of data preparation – verifies the possibility of creating actual toothed gear – and suggests automatic modification of data. A user can allow automatic data modification, can modify the data manually, or ignore the warning. During optimization, the software on each of the processing steps also checks the possibility of creating an actual toothed gear. If data generated by an optimization procedure do not fulfill the requirements, then such a procedure will not launch. As a result, the calculations take less time.
Calculations of the strength parameters are updated in accordance with the standard ISO 6336. Parameters: sigmaFlim - unlimited fatigue endurance of a tooth root and sigmaHlim - unlimited fatigue endurance of a tooth side were determined experimentally. Experiments were run on toothed gears made from five grades of carburising steel, finished by the two treatment methods: grinding and gear shaving. Within the software, it is possible to enter parameters for a given material and conduct respective calculations. Modification of a material results in immediate modification of all parameters of materials used in the given toothed gear. Moreover, selecting appropriate option in the dialog box allows setting similar parameters of materials applied in all gears of a gearbox automatically.
Changes of input parameters are also controlled by the program - for example the program won't allow to enter the parameter value out of allowable range. A user, preferably an experienced user, can also modify the parameters within a specified range. A user with little experience in designing toothed gears can take advantage of pre-set parameters and conveniently launch and complete the calculations.