According to the function of the mechanism in the seedling picking cycle, the whole movement is divided into four processes: seedling picking, seedling transplanting, seedling releasing and recovery, and the corresponding mechanism trajectory is also divided into four segments. The trajectory curve is fitted with cubic non-uniform B-spline curve....
On the basis of clarifying that the non-circular gear planetary gear train mechanism can be used as the actuator of the expected trajectory, the fluctuation characteristics of the non-circular gear transmission ratio determined by the trajectory should be considered. The fluctuation characteristics of transmission ratio of non-circular gear have...
For the noncircular gear planetary gear train mechanism shown in Figure 1, the noncircular closed track of the end point of the output component of the mechanism is determined by the unequal speed transmission ratio of the gear and the mechanism parameters. Because the mechanism is a single degree...
The schematic diagram of the seedling taking mechanism of non-circular gear planetary gear train is shown in the figure. The mechanism is symmetrically arranged with two arms. The transmission process is analyzed by the upper right half of the mechanism: the planet carrier 1 is hinged with the sun...
Non-circular planetary gear train mechanism has been widely studied and applied in rice transplanting mechanism because it can realize unequal speed transmission and form a special non-circular closed track at the end of the output component. In recent years, scholars began to study the use of non-circular gear planetary...
Analyze each tooth of the meshing diagram of the driving wheel and driven wheel, number each tooth, as shown in Figure 1, measure the distance from the rotation center of the driving wheel and driven wheel to each tooth, and the angular velocity of the driven wheel is ω...
Using ADAMS software, the kinematics of non-circular gear is analyzed to verify whether the output transmission ratio of non-circular gear is consistent with the theoretical transmission ratio. Kinematic analysis can enable the designed products to be verified and analyzed in time. This verification does not require a lot of...
1. Drawing of tooth profile of non-circular gear At present, the envelope method and tooth profile folding algorithm are mostly used to solve the non-circular gear, but the tooth profile conversion method has low precision and complex process, so it is used less and less. In this paper, the...
Example analysis of noncircular gear: the equation of transmission ratio i12 to be realized is as follows: Where, the transmission ratio function is based on the rotation angle of the driving wheel φ 1 is the function of independent variable. In this paper, it is assumed that the module...
The primary task of solving non-circular gear transmission is to determine the pitch curve, which is mainly divided into three ways: giving the transmission ratio function and center distance; Given reproduction function and center distance; The pitch curve equation and center distance of driving wheel are given. Instead of...