Comparison of the Key Structures Between RV Reducer and Spinea Reducer Based on Finite Element Method

Song, Lei; Liang, Shun-ke; Li, Weihua; Chen, Feixin

doi:10.1007/978-3-030-15740-1_171

Cited by 2 publications

(6 citation statements)

References 7 publications

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“…. ., M n−2 max , M n−1 max determined from expression (17) or (19) with the value of torque M K , the effective number of rollers m is determined. The algorithm for determining the effective number of rollers m transferring torque M K is shown in Figure 4.…”

Section: Effective Number Of Rollersmentioning

confidence: 99%

“…Proceeding as in the first stage, the distribution of forces Fj(β) (22), the distribution of contact pressures pj(β) (23) and (24), and the distribution of mechanical power losses PC (43) were determined, while the number of rollers m carrying the torque MK and the angle βk m by which the sliding plate must rotate to balance the torque MK were determined from the algorithm in Figure 4 and expressions (19) and (20). The results of the calculations are summarized in Figure 13.…”

Section: Total Mechanical Losses Pcmentioning

confidence: 99%

“…The authors of [18] proposed a novel method of optimizing the crankshaft bearings of Nabtesco RV reducer, in which rotational motion from the cycloidal gears is transmitted to the output disc using its stops, trapezoidal in shape, located in the trapezoidal holes of these gears. In [19], Nabtesco RV cycloidal reducer was compared with Spinea TwinSpin cycloidal reducer by determining the stresses and deformations of the reducers' main elements. The reducers differ from each other only if the output mechanism used.…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, mechanisms with rollers can be used. The output mechanisms presented in [9,19,21,22,24] can be classified as mechanisms with serially arranged rollers. The authors in these articles narrowly presented the output mechanisms, usually when analyzing the whole reducer.…”

Section: Introductionmentioning

confidence: 99%

“…A mathematical expression has been derived in which the lost motion in the output mechanism is described as the angle by which the motion transforming element should rotate in order to cancel the backlash. Although some solutions have found their way into production using the TwinSpin reducer as an example [19], there are few studies on these output mechanisms. Knowing them in a broader context will make it possible to choose a solution in terms of mechanical losses.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Mechanical Power Loss of the Output Mechanisms with Serially Arranged Rollers in Cycloidal Gears While Taking into Account Manufacturing Tolerances

Antoniak,

Bednarczyk

2024

Machines

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Despite their complex design, cycloidal gearboxes are characterized by high efficiency. Nevertheless, due to friction, some power is lost during gearbox operation. Basically, these losses occur in two structural nodes: the cycloid gearing and the output mechanism. Since the first of these nodes has been well discussed in the literature, the output mechanism will be discussed in this article. The design of the output mechanism has a significant impact on mechanical power losses. There are several mechanism design solutions. One of them is a mechanism with serially arranged rollers. Three solutions that are different in design but work identically will be discussed. Due to this affinity, a single, common mathematical model will be used to determine the value of losses. As will be shown, the value of losses is directly affected by the backlash, number, and diameter of the rollers used in the output mechanism and indirectly by the ratio and eccentricity of the cycloidal gearbox. Sample calculations were carried out using the developed model of mechanical power losses in the output mechanism. This made it possible to analyze the distribution of backlash created by manufacturing tolerances. It was also shown that the backlash has a significant effect on the number of rollers involved in torque transmission, as well as on the distribution of loads, contact pressures, and mechanical power losses.

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Section: Effective Number Of Rollersmentioning

confidence: 99%