dimensional tolerance

简明释义

尺寸公差

英英释义

例句

1.Engineers must account for dimensional tolerance when designing assemblies to ensure proper functionality.

工程师在设计装配时必须考虑尺寸公差以确保正常功能。

2.In precision engineering, maintaining dimensional tolerance is crucial for ensuring parts fit together correctly.

在精密工程中，保持尺寸公差对于确保零件正确配合至关重要。

3.Improper handling can lead to variations beyond the acceptable dimensional tolerance limits.

不当处理可能导致超出可接受的尺寸公差限制的变化。

4.Manufacturers often use specialized tools to measure dimensional tolerance during quality control.

制造商通常使用专用工具在质量控制过程中测量尺寸公差。

5.The design specifications require a dimensional tolerance of ±0.01 mm for the critical components.

设计规格要求关键组件的尺寸公差为±0.01毫米。

作文

In the field of engineering and manufacturing, precision is paramount. One of the key concepts that engineers must understand is dimensional tolerance, which refers to the permissible limit or limits of variation in a physical dimension. Essentially, it defines how much a part's size can deviate from its specified dimension while still being considered acceptable for use. This concept is crucial in ensuring that parts fit together correctly in assemblies and function as intended.The importance of dimensional tolerance cannot be overstated. For instance, in the automotive industry, components such as gears and bearings must adhere to strict tolerances to ensure that they operate smoothly and safely. If a gear is manufactured with too much deviation from its specified dimensions, it may not mesh properly with other gears, leading to mechanical failure. Similarly, in the aerospace sector, the tolerances on critical components can mean the difference between a successful flight and a catastrophic failure. Therefore, understanding and applying dimensional tolerance is essential for quality control.There are various methods for specifying dimensional tolerance. Engineers often use symbols and annotations on technical drawings to indicate the acceptable range of dimensions. These specifications can include bilateral tolerances, where a dimension can vary in both directions from the nominal size, or unilateral tolerances, where variation is allowed only in one direction. The choice of tolerance type depends on the functional requirements of the part and the manufacturing processes used.Moreover, different materials and manufacturing processes can affect how tolerances are applied. For example, machining processes like milling and turning can achieve tighter tolerances than processes like casting or molding. Therefore, when designing a part, engineers must consider not only the desired tolerances but also the capabilities of the manufacturing methods they plan to use. This interplay between design and manufacturing is a critical aspect of engineering that directly impacts product quality and performance.Another factor that influences dimensional tolerance is the cost associated with achieving tighter tolerances. Generally, the more precise the tolerance, the higher the manufacturing cost. This is due to the need for more advanced machinery, additional quality control measures, and potentially longer production times. As such, engineers must strike a balance between achieving the necessary precision and keeping production costs within budget. This balancing act is a common challenge faced in engineering projects.In conclusion, dimensional tolerance is a fundamental concept in engineering that governs how parts are designed and manufactured. It plays a critical role in ensuring that components fit together and function correctly in various applications, from everyday products to complex machinery. By understanding and applying dimensional tolerance appropriately, engineers can enhance product quality, improve safety, and optimize manufacturing processes. As technology continues to advance, the importance of precise tolerancing will only grow, making it an essential area of expertise for future engineers.

在工程和制造领域，精度至关重要。工程师必须理解的一个关键概念是尺寸公差，它指的是物理尺寸中允许的变动限度或限度。基本上，它定义了一个部件的尺寸可以偏离其指定尺寸的程度，同时仍被认为是可接受的。这个概念对于确保部件在装配中正确契合并按预期功能运行至关重要。尺寸公差的重要性不容小觑。例如，在汽车工业中，齿轮和轴承等组件必须遵循严格的公差，以确保它们平稳安全地运行。如果齿轮的制造偏离其指定尺寸过多，它可能无法与其他齿轮正确啮合，导致机械故障。同样，在航空航天领域，关键组件的公差可能意味着成功飞行和灾难性故障之间的区别。因此，理解和应用尺寸公差对质量控制至关重要。有多种方法可以指定尺寸公差。工程师通常在技术图纸上使用符号和注释来指示可接受的尺寸范围。这些规格可以包括双边公差，即尺寸可以在名义尺寸的两个方向上变化，或单边公差，即仅允许在一个方向上变化。公差类型的选择取决于部件的功能要求和所使用的制造工艺。此外，不同的材料和制造工艺会影响公差的应用。例如，铣削和车削等加工工艺可以实现比铸造或成型工艺更严格的公差。因此，在设计部件时，工程师不仅必须考虑所需的公差，还必须考虑他们计划使用的制造方法的能力。这种设计与制造之间的相互作用是工程的一个关键方面，直接影响产品的质量和性能。另一个影响尺寸公差的因素是实现更严格公差相关的成本。通常，公差越精确，制造成本越高。这是由于需要更先进的机械设备、额外的质量控制措施以及可能更长的生产时间。因此，工程师必须在实现必要的精度和保持生产成本在预算范围内之间找到平衡。这种平衡是在工程项目中面临的常见挑战。总之，尺寸公差是工程中的一个基本概念，决定了部件的设计和制造。它在确保组件在各种应用中正确契合和功能正常方面发挥着关键作用，从日常产品到复杂的机械。通过理解和适当地应用尺寸公差，工程师可以提高产品质量、改善安全性并优化制造过程。随着技术的不断进步，精确公差的重要性只会增加，使其成为未来工程师必备的专业知识领域。