Synthesis of indexing mechanisms with non-circular gears

Experimental kinematic analysis of an intermittent motion planetary mechanism with elliptical gears

“…Recently, a large number of scientific papers have been published on the practical application of mechanisms with non-circular gear wheels [13]. This type of gear implements various types of movement of the working bodies and is widely used in a variety of mechanical systems.…”

“…The various use of non-circular gears is explained by the large progresses made in their design and manufacture. Significant successes in this area are described in the papers [13,[22][23][24] of scientists from Wuhan University of Technology, who presented various schemes of planetary mechanisms with non-circular wheels and technologies for their manufacture. There are developed mechanisms with external, internal gearing, as well as bevel gears with non-circular wheels [13].…”

“…Significant successes in this area are described in the papers [13,[22][23][24] of scientists from Wuhan University of Technology, who presented various schemes of planetary mechanisms with non-circular wheels and technologies for their manufacture. There are developed mechanisms with external, internal gearing, as well as bevel gears with non-circular wheels [13]. Based on the theory of screws, a study was carried out to investigate the generation of noncircular bevel gear with free-form tooth profile and curvilinear tooth lengthwise [23].There are developed methods for the formation of gears and predicting the cutting force of a rack with a variable gear ratio, including novel discrete algorithms of contact length and chip area [24].…”

Mathematical Model and Geometrical Design Method of Noncircular Face Gear with Intersecting Axes

“…Noncircular gears integrate the features of the gear and cam, which can transmit accurately non-uniform motion between two shafts. As a simple function generator, they can be used to replace the expensive servo system and sensors in many mechanical devices to achieve specific motion law, such as the generator of the pulsating blood flow [1] , soft robot joint actuation mechanism [2] , differential velocity vane pump [3] , indexing mechanism [4] , potted vegetable seeding transplanting mechanism with punching hole [5] , speed variator [6] , differential of off-road vehicles [7] etc. The use of noncircular gear in equipment not only significantly reduces the system cost, but also greatly improves the reliability of the products in bad operating environment.…”

Geometric design and kinematics analysis of coplanar double internal meshing non-circular planetary gear train

“…As shown in Figure 1, there are mainly four types of traditional non-circular PGTs: and N-N. 9,10,14,[22][23][24][25] Among them, the N-G-W type has a single row with smaller axial dimension, and its radial dimension is slightly larger than the latter three types. N-W, W-W, and N-N are in the form of double rows, although the radial dimension can be reduced, the axial dimension is inevitably increased.…”