external thread

简明释义

外螺纹

英英释义

例句

1.You can identify the external thread by its helical ridge pattern.

你可以通过其螺旋状的边缘图案来识别外螺纹。

2.To ensure a tight seal, the external thread should be coated with Teflon tape.

为了确保密封，外螺纹应该涂上特氟龙胶带。

3.The bolt has an external thread that allows it to be screwed into a nut.

这个螺栓有一个外螺纹，可以拧入螺母中。

4.When assembling the pipe, make sure the external thread is properly aligned with the connector.

组装管道时，请确保外螺纹与连接器正确对齐。

5.The external thread on the cap needs to match the internal thread of the bottle.

瓶盖上的外螺纹需要与瓶子的内螺纹匹配。

作文

In the world of manufacturing and engineering, understanding the various components that make up a mechanical system is crucial. One such component that plays a significant role in fastening and joining parts together is the external thread. An external thread refers to the helical structure that is formed on the outside of a cylindrical object, such as a bolt or screw. This type of threading allows for the secure attachment of two or more components by enabling them to be screwed together. The importance of external threads cannot be overstated, as they are fundamental in ensuring the stability and integrity of many mechanical assemblies.The design of an external thread is characterized by its pitch, diameter, and profile. The pitch is the distance between each thread, while the diameter refers to the thickness of the threaded part. Different applications require different specifications for these parameters. For example, a fine pitch may be used for delicate components that require precision, while a coarse pitch might be more suitable for heavy-duty applications where strength is paramount. The profile of the external thread, which can vary from triangular to square, also affects how well the components will fit together and how much load they can bear.When it comes to manufacturing external threads, there are several methods that can be employed. The most common techniques include cutting, rolling, and forming. Each method has its advantages and disadvantages, depending on the materials being used and the desired properties of the final product. For instance, cutting threads may provide greater accuracy, but it can also be more time-consuming and costly compared to rolling, which is faster and can produce stronger threads.In addition to their mechanical functions, external threads also have implications for safety and reliability. Properly designed and manufactured threads ensure that connections do not loosen over time, which could lead to catastrophic failures in critical applications. For example, in the automotive industry, the use of external threads in components such as wheel bolts is vital for vehicle safety. If these threads fail, it could result in accidents or even fatalities.Moreover, the choice of material for creating external threads is another important consideration. Common materials include steel, aluminum, and plastic, each offering different properties such as weight, strength, and corrosion resistance. Engineers must carefully select the appropriate material based on the specific application and environmental conditions it will face.In conclusion, the external thread is a fundamental element in the field of engineering and manufacturing. Its design, production methods, and material choices all play a critical role in ensuring the effectiveness and safety of mechanical systems. As technology advances, the development of new materials and manufacturing techniques will continue to enhance the performance of external threads, making them even more reliable and efficient in various applications. Understanding this component is essential for anyone involved in engineering, as it lays the groundwork for creating robust and dependable mechanical assemblies.

在制造和工程的世界中，理解构成机械系统的各种组件至关重要。其中一个在紧固和连接部件方面发挥重要作用的组件是外螺纹。外螺纹指的是形成在圆柱形物体外部的螺旋结构，例如螺栓或螺钉。这种类型的螺纹通过使两个或多个组件能够相互拧紧，从而实现安全连接。外螺纹的重要性不容小觑，因为它们是确保许多机械装配稳定性和完整性的基础。外螺纹的设计特征包括其螺距、直径和轮廓。螺距是每个螺纹之间的距离，而直径则指的是螺纹部分的厚度。不同的应用需要这些参数的不同规格。例如，精细的螺距可用于需要精确的精密组件，而粗糙的螺距可能更适合于对强度要求较高的重型应用。外螺纹的轮廓可以从三角形到方形变化，这也影响着组件之间的配合程度以及承载能力。在制造外螺纹时，可以采用几种方法。最常见的技术包括切割、轧制和成形。每种方法都有其优缺点，具体取决于所用材料和最终产品的期望属性。例如，切割螺纹可能提供更高的精度，但相比于轧制，它可能更加耗时和昂贵，而轧制则速度更快且能生产出更强的螺纹。除了机械功能外，外螺纹还对安全性和可靠性有影响。设计和制造得当的螺纹可确保连接不会随着时间的推移而松动，这可能导致关键应用中的灾难性故障。例如，在汽车工业中，外螺纹在车轮螺栓等组件中的使用对于车辆安全至关重要。如果这些螺纹失效，可能导致事故甚至死亡。此外，制造外螺纹的材料选择也是另一个重要考虑因素。常见材料包括钢、铝和塑料，每种材料都提供不同的特性，如重量、强度和耐腐蚀性。工程师必须根据特定应用和所面临的环境条件仔细选择适当的材料。总之，外螺纹是工程和制造领域的基本元素。其设计、生产方法和材料选择在确保机械系统的有效性和安全性方面发挥着关键作用。随着技术的进步，新材料和制造技术的发展将继续增强外螺纹的性能，使其在各种应用中更加可靠和高效。理解这一组件对于任何从事工程的人来说都是必不可少的，因为这为创建稳健和可靠的机械装配奠定了基础。