pitch diameter

简明释义

中径节径

英英释义

例句

1.The pitch diameter of a screw thread determines how it will fit into a corresponding nut.

螺纹的节径决定了它如何适配相应的螺母。

2.When designing a pulley system, the pitch diameter affects the belt length needed.

在设计皮带轮系统时，节径会影响所需的皮带长度。

3.In CNC machining, the pitch diameter must be precisely measured for accurate component fitting.

在数控加工中，必须精确测量节径以确保组件的准确配合。

4.The gear's pitch diameter is crucial for ensuring proper meshing with the mating gear.

齿轮的节径对于确保与配合齿轮的正确啮合至关重要。

5.To calculate the torque applied, you need to know the pitch diameter of the crank.

要计算施加的扭矩，您需要知道曲柄的节径。

作文

Understanding the concept of pitch diameter is essential in various engineering and manufacturing fields, particularly when dealing with gears, screws, and other mechanical components. The pitch diameter refers to an imaginary circle that defines the size of a gear tooth or screw thread. It is the diameter at which the width of the tooth or thread is measured. This measurement is crucial because it determines how well two gears will mesh together or how effectively a screw will fit into a corresponding nut or hole.In the world of gears, for instance, the pitch diameter plays a critical role in ensuring proper engagement between the driving and driven gears. When two gears are in operation, their teeth must interlock correctly to transmit power efficiently. If the pitch diameter is not accurately calculated, it can lead to misalignment, excessive wear, and ultimately, failure of the mechanical system. Therefore, engineers must meticulously calculate the pitch diameter when designing gears to ensure optimal performance.The concept of pitch diameter also extends to threaded fasteners, such as bolts and nuts. The pitch diameter of a screw thread is the diameter of the imaginary cylinder that passes through the thread profile at the point where the width of the thread is equal to the width of the groove. This measurement is vital for ensuring that bolts can be securely fastened into nuts without stripping the threads. A precise pitch diameter ensures that there is enough material for the threads to grip each other firmly, providing the necessary strength and stability in mechanical assemblies.Moreover, understanding the pitch diameter is not just limited to theoretical knowledge; it has practical implications in manufacturing processes. For instance, when cutting gears or threading screws, machinists must set their tools to the correct dimensions based on the desired pitch diameter. Any deviation from the specified pitch diameter can result in parts that do not fit together correctly, leading to increased production costs and time delays.In summary, the pitch diameter is a fundamental concept in mechanical design and manufacturing. It serves as a critical reference point for engineers and machinists alike. By ensuring that the pitch diameter is accurately calculated and adhered to, it is possible to achieve efficient and reliable mechanical systems. Whether one is working with gears, screws, or any other components, a thorough understanding of the pitch diameter can lead to improved performance, reduced wear, and longer-lasting machinery. Thus, mastering this concept is essential for anyone involved in engineering or manufacturing disciplines, as it directly impacts the functionality and reliability of mechanical systems.

理解公称直径的概念在各种工程和制造领域中至关重要，特别是在处理齿轮、螺钉和其他机械组件时。公称直径指的是一个虚构的圆，定义了齿轮齿或螺纹的大小。它是测量齿或螺纹宽度的直径。这一测量非常关键，因为它决定了两个齿轮的啮合程度或螺钉如何有效地嵌入相应的螺母或孔中。例如，在齿轮的世界中，公称直径在确保驱动齿轮和被驱动齿轮之间的正确啮合方面发挥着关键作用。当两个齿轮运转时，它们的齿必须正确交错，以有效地传递动力。如果公称直径计算不准确，可能会导致对中不良、过度磨损，最终导致机械系统的故障。因此，工程师在设计齿轮时，必须仔细计算公称直径以确保最佳性能。公称直径的概念也扩展到螺纹紧固件，如螺栓和螺母。螺纹的公称直径是通过螺纹轮廓的虚构圆柱体的直径，该圆柱体经过的点上螺纹的宽度等于凹槽的宽度。这一测量对于确保螺栓可以安全地拧入螺母而不会剥离螺纹至关重要。精确的公称直径确保有足够的材料使螺纹牢固地咬合在一起，从而在机械组装中提供必要的强度和稳定性。此外，理解公称直径不仅限于理论知识；它在制造过程中具有实际意义。例如，在切割齿轮或螺纹螺钉时，机械师必须根据所需的公称直径设置工具的正确尺寸。任何偏离指定的公称直径都可能导致部件无法正确配合，从而增加生产成本和时间延误。总之，公称直径是机械设计和制造中的基本概念。它作为工程师和机械师的重要参考点。通过确保准确计算和遵循公称直径，可以实现高效可靠的机械系统。无论是在处理齿轮、螺钉还是其他组件，深入理解公称直径都可以带来更好的性能、减少磨损和更长的机械使用寿命。因此，掌握这一概念对任何参与工程或制造学科的人来说都是必不可少的，因为它直接影响机械系统的功能和可靠性。