Abstract
In practice, gear units whose transmission number is not constant during one revolution are used. Such gears include the proposed elliptical transmission. Its application can be (missing a word?) and the automotive industry. The gears set consists of a pair of identical elliptical gears. The transmission ratio of the designed elliptical gear is not constant. The basic kinematic characteristics of this transmission are described in this work. The deformation in contact point of non - circular gears is determined by the finite element method in this paper. The results are compared with the deformation of the teeth of the spur gears.
Highlights
Gears are a logical continuation of the invention of the wheel
The angular velocity on the drive wheel gear and the driven wheel gear is constant for standard spur gears
For designed elliptical gearing with variable transmission ratio, the angular velocity of the driven wheel is not constant but is changed according to the continuous changing of the gear ratio
Summary
Gears are a logical continuation of the invention of the wheel. That gears are called the biggest invention after the wheel is not unthinkable. By the year 100 v.C., the Greeks used metal gears with cylindrical teeth in complex computing equipment and astronomical calendars We know this by the discovery of the Antikythera Mechanism (Fig. 1), the oldest known gear machine. Examples of the use of non-circular gears in practice include, for example, mechanical presses, for optimisation of work cycle kinematics [14,26]; forging machines, for optimising the work cycle parameters; high torque hydraulic engines for bulkhead drives; textile industry machines, for improving machine kinematics resulting in the process optimisation and application in oval gear flowmeters. The kinematic properties for the proposed elliptical gear set are presented It is a model of a non-standard eccentric elliptical transmission with a continuously changing gear ratio for specific parameters. One should not forget about the possibility of diagnosing damages with the use of vibroacoustic diagnostics [2,3,5,6,12,17]
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