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相关概念视频

Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

148
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
148
Residual Stresses in Circular Shafts01:10

Residual Stresses in Circular Shafts

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In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the...
140
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
378
Circular Shaft - Stresses in Linear Range01:13

Circular Shaft - Stresses in Linear Range

221
Consider a scenario where a circular shaft is subject to torque that remains within the boundaries of Hooke's Law, avoiding any permanent deformation. So, the formula for shearing strain is revisited. This formula is multiplied by the modulus of rigidity, and then Hooke's Law for the shearing stress and strain is applied. As a result, the equation for shearing stress in a shaft can be derived.
221
Rotational Motion about a Fixed Axis01:26

Rotational Motion about a Fixed Axis

352
A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...
352
Stress Concentrations in Circular Shafts01:18

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Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
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在五轴线加工过程中使用交叉轴策略的错误控制方法.

Jinjie Jia1, Wenyuan Song1, Mingcong Huang1

  • 1Chengdu Aircraft Industrial (Group) Co., Ltd, Chengdu, 610092, China.

Scientific reports
|April 1, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种五轴线削策略,以减少航空部件加工中的错误. 新方法通过优化工具路径和固定角度来最大限度地减少加工错误,提高精度.

关键词:
这是一个错误的错误,错误的错误.有五个轴的五轴.磨削磨削的方法 磨削正常部分是正常的部分.线条 线条 线条 线条 线条

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科学领域:

  • 制造业 工程 制造工程
  • 机械工程 机械工程
  • 航空航天工程 航空航天工程

背景情况:

  • 线程削对于航空部件至关重要,但传统的三轴削难以处理复杂的形状和高精度.
  • 三轴削中的重大错误使得满足严格的航空机械加工规格具有挑战性.

研究的目的:

  • 提出一个错误控制方法,用于五轴线,使用交叉轴策略.
  • 为了提高复杂的航空部件的加工精度.

主要方法:

  • 使用轴向和正常截面构造线程配置文件.
  • 从名义配置文件中推导线机的几何形状.
  • 将工具路径定义为一个新的错误控制位置.
  • 使用信封理论来建模削错误.
  • 分析固定角度对加工错误的影响.

主要成果:

  • 在不同的削策略中比较错误.
  • 用固定角度变化 (0到0.0282半径) 来证明角度误差变化 (从-0.796到0.808度).
  • 通过在五轴削中选择最佳固定角度来验证最小化的错误.

结论:

  • 拟议的五轴线削策略显著提高了加工精度.
  • 交叉轴方法有效控制错误,优于航空组件的传统方法.