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相关概念视频

Spindle Assembly02:50

Spindle Assembly

Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the microtubule-mediated pathway – collectively contributing to form a robust spindle apparatus.
In most cells, centrosomes are the primary microtubule nucleation centers. In the centrosome-mediated pathway, the G2-prophase transition triggers centrosome maturation and increased microtubule nucleation. Progressive nucleation results in a microtubule array...
Quality Control01:05

Quality Control

Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Design of Transmission Shafts01:16

Design of Transmission Shafts

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 reconfiguring the...
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Control Systems

Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
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PD Controller: Design

In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...

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Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
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质量控制技术用于高性能驱动器的磨料流精密加工.

Junye Li1, Songyuan Li1, Pingping Wei2

  • 1Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing Changchun University of Science and Technology, Changchun 130022, China.

Micromachines
|December 31, 2025
PubMed
概括

磨流加工 (AFM) 显著提高了复杂的螺旋的表面质量. 优化的参数实现了94%的表面粗度降低,提高了性能和效率.

关键词:
数字模拟的数字模拟.固体液体两相磨料流动表面质量 表面质量

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科学领域:

  • 制造业 工程 制造工程
  • 材料科学 材料科学 材料科学
  • 表面计量学 表面计量学

背景情况:

  • 高性能螺旋需要精确的表面加工,以获得最佳的效率.
  • 复杂的几何形状和狭窄的道对传统的抛光方法构成重大挑战.
  • 现有的技术可能是低效的,有害的,或无法实现统一的结果.

研究的目的:

  • 为了研究固体-液体双相磨料流加工 (AFM) 用于螺旋轮的高精度加工.
  • 分析流通道结构和加工参数对抛光效率的影响.
  • 在复杂的螺旋几何形状上确定最佳的AFM参数,以保持统一的表面质量.

主要方法:

  • 使用数值模拟来分析不同流通道设计和加工参数下的抛光效应.
  • 实验验证使用直角测试设计来确定关键影响因素.
  • 在加工前和加工后测量表面粗度 (Ra),以量化改进.

主要成果:

  • 与直接流通道相比,渐进流通道结构显示出更高的处理统一性和强度.
  • 增加的进气压和磨料粘度显著提高了抛光效果的强度和均性.
  • 入口压力被确定为最关键的因素,其次是磨砂剂的粒径和工艺周期.

结论:

  • 优化的AFM参数 (6MPa入口压力,10个循环,40μm磨料) 将螺旋表面粗度降低了近94% (从0.766μm降至0.047μm).
  • 这项研究提供了一种经过科学验证的方法,用于在复杂的螺旋上实现高质量,均的表面加工.
  • 通过精密的表面加工,AFM提供了一种可行的解决方案,以提高高性能螺旋的性能和效率.