2022年5月10日 · The profile of a surface tolerance is the 3D equivalent of the line profile tolerance. While the profile of a line controls a specific cross-section on the part, the profile of a surface controls every cross-section across the entire length of the surface.

2021年4月12日 · On the feature control frame, the box to the right of the Profile of a Surface symbol contains the tolerance for the surface. The tolerance zone consists of two parallel profiles that follow the True Profile. The tolerance zone can be bilateral or unilateral.

The standard form of straightness is a 2-Dimensional tolerance that is used to ensure that a part is uniform across a surface or feature. Straightness can apply to either a flat feature such as the surface of a block, or it can apply to the surface of a cylinder along the axial direction.

2025年1月19日 · The Profile of a Surface in GD&T is a versatile tolerance callout used to control the 3-dimensional tolerance zone around a surface, ensuring all points fall within this zone relative to the true profile, or the theoretically exact shape.

A profile is defined as the outline of a surface. There are two types of profile tolerance – profile of a surface, and profile of a line. The profile of a line tolerance controls the shape of a surface relative to a pre-defined ideal cross section of that surface.

The ‘profile of a surface’ (sometimes simply ‘surface profile’) control is used in GD&T (geometric dimensioning & tolerancing) to control the form of any 2D surface in 3D space. It is one of the most powerful GD&T controls and can be used with complex freeform geometries.

2023年10月29日 · This article provides an in-depth look at profile tolerance, explaining the different types, how to properly indicate profile tolerance on drawings, and examples of using profile tolerance as both a form tolerance and positional tolerance.

2024年5月3日 · Surface Profile tolerance specifies a uniform boundary that the surface must lie within. It controls the shape, rather than the size or location, of a surface. Surface Profile is often used when the surface needs to fit with another surface or …

2024年2月16日 · In GD&T the Profile of a Surface symbol is used to establish a 3 dimensional tolerane zone around the surface, which is often a complex curve or shape. This control requires that every point on the surface must lie within a tolerance range that mimics the surface profile.

Form Tolerance - A form tolerance states how far an actual surface of feature is permitted to vary from desired form the desired form implied by the drawing. Expressions of these tolerances refer to flatness, straightness, parallelism, perpendicularly, angularity, roundness, cylindricity, profile of a surface and profile of a line.