To show angular dimensions in SOLIDWORKS, utilize the Smart Dimension tool, which is versatile enough to measure angles between various geometric entities quickly and accurately. This fundamental tool simplifies the process for lines, edges, and arcs, allowing you to define angles without complex setups.
Understanding Angular Dimensions in SOLIDWORKS
The Smart Dimension tool is your primary resource for all dimensioning needs in SOLIDWORKS, including angular measurements. It intelligently anticipates the type of dimension you want based on the entities you select. Whether you're working in a sketch, part, or drawing, Smart Dimension provides a straightforward way to add angular information to your designs.
Step-by-Step Guide: Adding Angular Dimensions
Adding an angular dimension in SOLIDWORKS is a simple process that typically involves just a few clicks.
- Activate the Smart Dimension Tool:
- Navigate to the Sketch tab in the CommandManager.
- Click on the
Smart Dimensionicon. (Alternatively, you can pressSfor the Shortcut Bar and selectSmart Dimension, or go toTools > Dimensions > Smart).
- Select Geometric Entities:
- Click on the two entities between which you want to measure the angle. These can be two lines, two edges, or even an arc and a line.
- Place the Dimension:
- Move your mouse to position the dimension text. As you move the cursor, SOLIDWORKS will preview different angular measurements (e.g., acute, obtuse, complementary, or supplementary angles).
- Click to place the dimension. You can then modify its value, properties, and display in the PropertyManager.
Common Scenarios for Angular Dimensioning
SOLIDWORKS offers flexibility for various angular dimensioning situations:
- Angle Between Two Lines/Edges: This is the most common scenario. Simply select two intersecting lines or edges. SOLIDWORKS will automatically display the angle between them.
- Angle of a Single Line Relative to Horizontal/Vertical: For a single line whose angle you need to define relative to a horizontal or vertical axis, there's a direct and efficient method. Instead of drawing a temporary construction centerline, which can be less efficient, you can directly select the line and then select an existing horizontal or vertical reference. This reference could be another line, a model edge, a sketch origin, or even one of the default planes (e.g., Front Plane for horizontal, Top Plane for vertical). SOLIDWORKS will then display the angle between your selected line and the chosen reference.
- Angle Between Two Non-Intersecting Lines: If two lines do not intersect but you need to define the angle they would form if extended, select both lines. SOLIDWORKS will automatically calculate the angle based on their implied intersection point.
- Angle of an Arc or Circular Segment (Sweep Angle): To dimension the sweep angle of an arc or a sector of a circle, select the arc itself. SOLIDWORKS will allow you to dimension its central angle. Alternatively, you can select the center point of the arc and then the two endpoints of the arc to define the angle.
- Angle Between a Line/Edge and a Vertex/Point: Select a line/edge, and then select a vertex or point. SOLIDWORKS may infer a reference from the point's position to give you an angular dimension.
Advanced Tips and Tricks for Angular Dimensions
- Flipping Dimension Display: When placing an angular dimension, if the displayed angle isn't the one you need (e.g., you see 270° instead of 90°), move your mouse cursor to different quadrants around the intersection point. SOLIDWORKS will automatically cycle through the complementary and supplementary angles. You can also right-click the dimension while placing it to see options like "Display as Acute" or "Display as Obtuse."
- Precision and Tolerances: After placing the dimension, use the Dimension PropertyManager to adjust the number of decimal places for precision, add tolerances, or specify a custom text.
- Angular Ordinate Dimensions: While less common for angles, you can use ordinate dimensions to define angular positions relative to a zero-degree reference, useful for patterns or rotary assemblies.
- Driving vs. Driven Dimensions: Angular dimensions can be either
driving(they control the geometry) ordriven(they report the geometry's state). In sketches, driving dimensions are usually preferred to fully define geometry.
Customizing Angular Dimension Properties
Once an angular dimension is placed, you can further customize its appearance and behavior through the PropertyManager.
| Property Category | Description |
|---|---|
| Value | Adjust precision, add tolerance, specify inspection dimension, or override the displayed value. |
| Leaders | Change arrow styles, adjust leader length, or customize text position relative to the leader. |
| Text | Modify the font, add custom text (prefix/suffix), or link the dimension to a custom property. |
| Other | Control layer assignment, add bend notes for sheet metal, or set display conditions. |
Common Issues and Solutions
- Dimension Not Showing Correct Angle: Ensure you are selecting the correct entities. Sometimes, picking a construction line instead of a model edge can lead to unexpected results. Move the cursor around during placement to see alternative angles.
- Dimension Flips Unexpectedly: This often happens when moving the dimension. Right-click the dimension to access context-sensitive options like "Display options" to set it to acute or obtuse.
- Cannot Place Dimension: Check for over-definition in sketches. If a sketch is fully defined, adding another driving dimension may cause an error. Consider making the new dimension
drivenif it's for informational purposes only.
By mastering the Smart Dimension tool and understanding these nuances, you can efficiently and accurately represent angular dimensions in your SOLIDWORKS designs.
