How do I move a datum in Solidworks?

How do I change the datum in Solidworks?

Editing the Origin Datum

1. Do one of the following: Select an axis in the graphics area, then click Edit datum definition in the Hole table axis PropertyManager. …
2. In the graphics area, select a vertex or X and Y axes.
3. Click . …
4. Resize and reposition the coordinate markers by dragging them.

Can a datum point move?

If you create a dependent datum on a part, the datum moves along with an instance of the part in the Assembly module. If you create a dependent datum on the assembly by selecting entities from a part instance, the datum moves along with the instance in the Assembly module.

How do I use datums in Solidworks?

Inserting Datum Feature Symbols

1. Do one of the following: For parts, click Datum (DimXpert toolbar) or Tools > DimXpert > Datum . …
2. Edit the options in the Datum Feature PropertyManager .
3. Click in the graphics area to place the attachment and then the symbol. …
4. Continue inserting as many symbols as needed.
5. Click .

What does a movable datum target symbol indicate?

Movable Datum Target Symbols and Datum Target Spheres The movable datum target symbol can be used with a spherical diameter specified for the datum target size, and a circular phantom line is used to represent the spherical datum feature simulator as shown in Example 3-38.

How do I change the size of a datum in Solidworks?

You can specify document-level drafting settings for datum annotations. To open this page, with a drawing open, click Options (Standard toolbar), select the Document Properties tab, and then select Annotations > Datums.

…

Select a standard:

1. ANSI.
2. ISO.
3. DIN.
4. JIS.
5. BSI.
6. GOST.
7. GB.

How do I change datum font size in Solidworks?

Group select all dimensions in the drawing. In the Other tab of the dimension property manager, uncheck the box labeled Use document font. By selecting the Font button in the dimension property manager you can now change the font size for only the selected dimensions. The datum target size will not be affected.

What causes a datum shift?

Most this changed is caused by changes in the SPCS parameters such as location of the grid origin, not by changes in the shape of the ellipsoid or other datum parameters.

How do you pick a datum?

How To Select Datum Feature In The Order of Precedence. Datum features must be easily identifiable on the part. If parts are symmetrical, or have identical features making identification of datum features impossible, the datums features must be physically identified.

Why are there different datums?

Because there are different ways to fit the mathematical model to the surface of the Earth, there are many different datums. Also, in the modern digital era, techniques have vastly improved and many modern datum are very similar to each other.

How do I add a dimension to a datum?

Create a Datum Feature Symbol



In the Annotations group on the Annotate tab, click Datum Feature Symbol. A datum feature symbol will appear next to your cursor, and will move with your cursor. Drag the datum feature symbol to place it on a surface or another annotation.

How do you attach a geometric tolerance to datum in Solidworks?

To attach the datum feature symbol to a dimension or geometric tolerance symbol, do either of the following:

1. Before you create the datum feature symbol, preselect the dimension or geometric tolerance symbol.
2. After you create the datum feature symbol, drag it onto the dimension or geometric tolerance symbol.

What does datum mean in Solidworks?

You can attach a datum feature symbol to the following items: In a part or assembly, on a planar model surface or on a reference plane. In a drawing view, on a surface that appears as an edge (including silhouette edges) or on a section view surface to identify datum planes in the part. A geometric tolerance symbol …

What are the 3 types of datum targets?

The symbols for datum targets are shown in Table 3.5. The 3-2-1 method. The primary datum has three datum targets, the secondary two and the tertiary one.

How do you dimension a target datum?

Specifying a Datum Target



A datum target is described using a circular frame with a horizontal line drawn through the middle (datum target frame). In the bottom half of the datum target frame, you write the letter/symbol indicating the same datum as that of the entire feature, along with the number of the datum target.