external thread

简明释义

外螺纹

英英释义

例句

1.The bolt features an external thread that allows it to be easily screwed into a nut.

这个螺栓具有一个外螺纹，可以轻松地拧入螺母。

2.To attach the accessory, align the external thread with the corresponding internal thread.

要安装配件，请将外螺纹与相应的内螺纹对齐。

3.The external thread on the cap ensures a tight seal on the bottle.

瓶盖上的外螺纹确保瓶子的密封性。

4.The design of the screw includes an external thread that enhances grip and stability.

这个螺钉的设计包括一个外螺纹，增强了抓握力和稳定性。

5.When selecting pipes, make sure to check if they have external threads for proper connection.

在选择管道时，请确保检查它们是否具有外螺纹以确保正确连接。

作文

In the world of mechanical engineering and manufacturing, understanding the various components and their specifications is crucial. One such important component is the thread, which can be found in numerous applications, from simple household items to complex machinery. Among the different types of threads, the term external thread refers to a type of thread that is formed on the outside of a cylindrical object. This contrasts with an internal thread, which is found within a hole or cavity. The significance of external thread lies not only in its functionality but also in its role in ensuring the integrity and performance of assembled parts.The design of an external thread is characterized by its helical ridge that spirals around the outer surface of a cylinder. This design allows for easy engagement with an internal thread, enabling two components to be securely fastened together. For instance, consider a bolt, which typically features an external thread. When inserted into a nut that contains an internal thread, the two parts can be tightened to create a strong and stable connection. This connection is essential in various applications, from automotive to aerospace, where safety and reliability are paramount.Moreover, the manufacturing process of creating an external thread involves several methods, including cutting, rolling, and grinding. Each method has its advantages and disadvantages, depending on the material being used and the desired precision. For instance, thread rolling is often preferred for mass production due to its efficiency and ability to produce stronger threads compared to cutting. Understanding these manufacturing techniques is vital for engineers and designers who aim to select the best method for their specific needs.Another aspect to consider is the standardization of external threads. Various standards exist globally, such as the Unified Thread Standard (UTS) in the United States and the Metric Thread Standard in Europe. These standards dictate the dimensions, tolerances, and profiles of threads, ensuring compatibility between different components manufactured by various companies. Adhering to these standards is crucial for maintaining quality and interoperability in the marketplace.Furthermore, the application of external threads extends beyond just fastening components. They are also used in adjusting mechanisms, where the movement of one part relative to another is controlled by the rotation of an external thread. For example, in a clamp, the tightening mechanism often relies on an external thread to apply pressure and secure objects in place. This versatility showcases the importance of understanding external threads in designing functional and efficient products.In conclusion, the concept of external thread is fundamental in the realm of engineering and manufacturing. Its role in fastening, standardization, and mechanical adjustment highlights its significance in creating reliable and efficient products. As technology advances, the understanding and application of external threads will continue to evolve, making it essential for professionals in the field to stay informed about the latest developments and best practices. By mastering the intricacies of external threads, engineers and designers can contribute to innovations that enhance safety, performance, and quality across various industries.

在机械工程和制造的世界中，理解各种组件及其规格至关重要。其中一个重要组件是螺纹，它可以在从简单的家庭用品到复杂的机器等众多应用中找到。不同类型的螺纹中，术语外螺纹指的是形成在圆柱物体外部的一种螺纹。这与内部螺纹相对，后者存在于孔或腔体内。外螺纹的重要性不仅在于其功能性，还在于其在确保组装部件的完整性和性能方面的作用。外螺纹的设计特点是其在圆柱体外表面螺旋缠绕的螺旋脊。这种设计使得与内部螺纹的轻松配合成为可能，从而使两个组件能够牢固地连接在一起。例如，考虑一个通常具有外螺纹的螺栓。当它插入一个包含内部螺纹的螺母时，这两个部分可以被拧紧，从而形成一个强大而稳定的连接。这种连接在汽车到航空航天等各种应用中至关重要，其中安全性和可靠性至关重要。此外，制造外螺纹的过程涉及多种方法，包括切割、滚压和磨削。每种方法都有其优缺点，具体取决于所使用的材料和所需的精度。例如，螺纹滚压通常因其效率和能比切割产生更强的螺纹而受到青睐。理解这些制造技术对于希望为其特定需求选择最佳方法的工程师和设计师至关重要。另一个需要考虑的方面是外螺纹的标准化。全球范围内存在各种标准，例如美国的统一螺纹标准（UTS）和欧洲的公制螺纹标准。这些标准规定了螺纹的尺寸、容差和轮廓，确保由不同公司制造的不同组件之间的兼容性。遵循这些标准对于维护市场上的质量和互操作性至关重要。此外，外螺纹的应用超越了仅仅是连接组件。它们还用于调节机制，其中一个部件相对于另一个部件的运动由外螺纹的旋转控制。例如，在夹具中，紧固机制通常依赖于外螺纹施加压力并将物体固定到位。这种多功能性展示了理解外螺纹在设计功能性和高效产品中的重要性。总之，外螺纹的概念在工程和制造领域是基础性的。它在连接、标准化和机械调节中的作用突显了其在创造可靠和高效产品中的重要性。随着技术的进步，对外螺纹的理解和应用将继续发展，使得该领域的专业人士必须保持对最新发展和最佳实践的了解。通过掌握外螺纹的细微差别，工程师和设计师可以为增强各个行业的安全性、性能和质量的创新做出贡献。