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Related Concept Videos

Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

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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.
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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...
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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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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.
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Circular Shaft - Stresses in Linear Range01:13

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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.
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Rotational Motion about a Fixed Axis01:26

Rotational Motion about a Fixed Axis

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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...
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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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Updated: May 16, 2025

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Error control method using crossed axes strategy in the five-axis thread milling process.

Jinjie Jia1, Wenyuan Song1, Mingcong Huang1

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

Scientific Reports
|April 1, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a five-axis thread milling strategy to reduce errors in aviation component machining. The new method minimizes machining errors by optimizing the tool path and fixed angle, improving accuracy.

Keywords:
ErrorFive-axisMillingNormal sectionThread

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Area of Science:

  • Manufacturing Engineering
  • Mechanical Engineering
  • Aerospace Engineering

Background:

  • Thread milling is crucial for aviation components, but traditional three-axis milling struggles with complex shapes and high precision.
  • Significant errors in three-axis milling make it challenging to meet stringent aviation machining specifications.

Purpose of the Study:

  • To propose an error control method for five-axis thread milling using a crossed axes strategy.
  • To enhance machining accuracy for complex aviation components.

Main Methods:

  • Constructing thread profiles using axial and normal sections.
  • Deriving thread mill geometry from nominal profiles.
  • Defining tool paths with a new locus for error control.
  • Employing envelope theory to model milling errors.
  • Analyzing the impact of fixed angles on machining errors.

Main Results:

  • Comparison of errors across different milling strategies.
  • Demonstration of angle error variation (from -0.796 to 0.808 degrees) with fixed angle changes (0 to 0.0282 radians).
  • Validation of minimized errors through optimal fixed angle selection in five-axis milling.

Conclusions:

  • The proposed five-axis thread milling strategy significantly improves machining accuracy.
  • The crossed axes approach effectively controls errors, outperforming traditional methods for aviation components.