一个牙差异正弦牙形状行星减速器的传输效率
1School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, China.
Heliyon
|February 21, 2024
概括
这项研究介绍了一种新的,轻量级的行星减速器,用于太空和空中机器人. 新设计通过优化组件和减少功耗损失来实现高效率 (82.47%实验).
科学领域:
- 机器人与机械工程 机器人与机械工程
- 行星轮系统 行星轮系统
- 轻量级设计 轻量级设计
背景情况:
- 太空探索和无人机操纵器需要紧,轻量级的驱动系统.
- 现有的减速机在满足这些严格的轻量级要求方面面临着挑战.
- 新型减速器设计对于在受限制环境中推进机器人能力至关重要.
研究的目的:
- 提出和分析一种新的单一牙差异连续正弦牙形状的K-H-V型行星减速器,带有针式等速输出机制.
- 调查拟议的减速器的结构组成,网格特性和效率.
- 通过实验测量验证效率计算方法.
主要方法:
- 对减速机的结构组成和网格特性进行分析.
- 对网格对力,摩擦系数和效率的研究.
- 研究行星轮力,轴承效率和输出机制效率.
- 实验测量和比较原型减速器效率与计算值.
主要成果:
- 轮模量,输入速度,表面粗度和滑剂粘度显著影响网格效率.
- 异常轴承的效率低于非异常轴承;通过调整压力角度,牙数量,牙高度和针孔半径,可以提高效率.
- 输出机制功率损失是影响传输效率的主要因素;减少中心距离,轴承内径和行星轮牙数,同时增加针轴外径,最大限度地减少功率损失.
- 原型实验效率 (82.47%) 与计算效率 (83.72%) 紧密相匹配,误差为1.25%.
结论:
- 拟议的K-H-V型行星减速器具有针式等速输出机制,为轻量级机器人联合驱动系统提供了可行的解决方案.
- 优化设计参数,如压力角度,牙数量和轴承配置是最大限度地提高减速机效率的关键.
- 经过验证的计算方法为预测和优化这种减速器的性能提供了可靠的工具.
相关概念视频
01:16Design of Transmission Shafts
300
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by...
300
01:09Transmission Shafts: Problem Solving
232
Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...
Next, use bending moment diagrams for the shaft to...
232
01:21Screw: Problem Solving
415
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
To evaluate the...
415
01:15Design of Transmission Shafts - Stress Analysis
357
Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
357
01:13Angle of Twist: Problem Solving
273
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
273
01:18Reducing Line Loss
152
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
152