What is a location dimension?

What is a location dimension?

[lō′kā·shən də′men·chən] (design engineering) A dimension which specifies the position or distance relationship of one feature of an object with respect to another.

What is the difference between dimension and size?

When used as nouns, dimension means a single aspect of a given thing, whereas size means an assize. When used as verbs, dimension means to mark, cut or shape something to specified dimensions, whereas size means to adjust the size of.

What are the different method of dimensioning?

The basic types of dimensioning are linear, radial, angular, ordinate, and arc length. Use the DIM command to create dimensions automatically according to the object type that you want to dimension.

What are the three types of dimensions?

Types of Dimensions

• Slowly Changing Dimensions.
• Rapidly Changing Dimensions.
• Junk Dimensions.
• Stacked dimensions.
• Inferred Dimensions.
• Conformed Dimensions.
• Degenerate Dimensions.
• Role-Playing Dimensions.

What is the minimum distance between parallel dimensions?

Dimensions should be at least 3/8″ (10 mm) from the object outline, then equally spaced at least 1/4″ (6 mm) apart. A continuous series of dimensions should be aligned rather than staggered.

What are the 4 components of a dimension?

A dimension consists of four components:

• A dimension value.
• A dimension line that is parallel to the direction of the described feature.
• A pair of arrowheads.
• A pair of extension lines projecting from the feature to which the dimension refers.

When should you make a dimension basic?

Basic dimensions are required to locate the true position relative to datum features, but a +/- tolerance cannot be applied to these basic dimensions. The basic dimensions are considered theoretically exact locations.

What is a basic dimension used for?

Basic dimensions are used to locate True Positions. There is no tolerance or deviation in the basic dimensions themselves, as they are theoretically perfect. The tolerance zone for the feature comes through the geometric tolerance shown in the feature control frame for that feature.

Does flatness require basic dimensions?

Gauging / Measurement: This is a 3D measurement so points must be measured across the length and width of the part to ensure the entire surface is in tolerance. Flatness cannot be measured by simply placing the part on a granite slab and running a height gauge or microheight over it.

What is the purpose of having a tolerance on your dimension?

Tolerances determine exactly how much room for error you have when you manufacture each part. When you appreciate the vital role that tolerances play in the manufacturing process, you’ll design higher quality products and make fewer costly manufacturing mistakes.

What are basic dimensions GD?

Basic dimension: A basic dimension is a numerical value used to describe the theoretically exact size, profile, orientation, or location of a feature or datum target. Basic dimensions are used to define or position tolerance zones. And its usually toleranced with gage-makers’ tolerances. …

How do you measure basic dimension?

BASIC dimensions define the desired location and position of the target area in a reference system constructed of datums. Deviations are measured by the size of the tolerance area.

What is theoretically exact dimension?

“A basic dimension or Theoretically exact dimension (TED) is a numerical value used to describe the theoretically exact size, profile, orientation, or location of a feature or datum target and is not affected by individual or general tolerance.

What is the difference between basic size and actual size?

Basic Size: The size with reference to which the limits of size are fixed. Actual Size: Actual measured dimension of the part. Zero Line: It is a straight line corresponding to the basic size. The deviations are measured from this line.

When tolerance is given on one side of the basic dimension it is called?

Unilateral Tolerance: The dimension of a part is allowed to vary only on one side of the basic size, i.e. tolerance lies wholly on one side of the basic size either above or below it.