The spline command in AutoCAD is used to create a smooth curve, which passes through a set of predefined points. It creates a non-uniform curve passing through the points. … The control vertices define a control frame, which is used to control the shape of the spline, while fit points coincided with the spline.

## What is the use of spline in AutoCAD?

Creates a smooth curve that passes through or near a set of fit points, or that is defined by the vertices in a control frame. SPLINE creates curves called nonuniform rational B-splines (NURBS), referred to as splines for simplicity. Splines are defined either with fit points, or with control vertices.

## How do you join a spline in AutoCAD?

To Join Polylines, Splines, Lines, and Arcs Into a Single…

- Click Home tab Modify panel Edit Polyline. Find.
- Select a polyline, spline, line, or arc to edit. …
- Enter j (Join).
- Select one or more polylines, splines, lines, or arcs that are located end to end.
- Press Enter to end the command.

## How do you spline?

Draw a Spline

- Click Home tab Draw panel Spline. Find.
- (Optional) Enter m (Method). Then enter either f (Fit Points) or cv (Control Vertices).
- Specify the first point of the spline.
- Specify the next point of the spline. Continue specifying points as needed.
- Press Enter to end, or enter c (Close) to close the spline.

## How do you dimension a spline in AutoCAD?

Add drawing dimensions to splines

- On the ribbon, click Annotate tab Dimension panel Dimension .
- Right-click in the graphics window and make sure that Spline Min/Max is selected in the Snap Settings context menu.
- In the graphics window, select the spline geometry.
- Move your cursor over the spline.

## What does spline mean?

noun. a long, narrow, thin strip of wood, metal, etc.; slat. a long, flexible strip of wood or the like, used in drawing curves. Machinery. any of a series of uniformly spaced ridges on a shaft, parallel to its axis and fitting inside corresponding grooves in the hub of a gear, etc., to transmit torque.

## What is the difference between spline and polyline?

Oh, well a spline is a continuous curve that passes through discreet points specified by the user. A polyline is a chain of points with line or arc segments linked end to end. … Splines are mathematically generated on regen in AutoCAD so they’ll always be smooth. This makes them suitable for machining toolpaths.

## How do you convert a spline to a polyline?

To Convert a Spline to a Polyline

- Click Home tab Modify panel Edit Spline. Find.
- Select the spline to convert.
- Enter p to convert to Polyline.
- Specify a precision value or press Enter to end the command.

## What is spline used for?

Splines are ridges or teeth on a drive shaft that mesh with grooves in a mating piece and transfer torque to it, maintaining the angular correspondence between them. For instance, a gear mounted on a shaft might use a male spline on the shaft that matches the female spline on the gear.

## When would you use a spline?

In mathematics, a spline is a special function defined piecewise by polynomials. In interpolating problems, spline interpolation is often preferred to polynomial interpolation because it yields similar results, even when using low degree polynomials, while avoiding Runge’s phenomenon for higher degrees.

## What is a spline tool?

A screen roller or spline roller is a small hand tool used to press screen mesh into the edges of a window frame that is fluted on the inner edges, or to press in the retainer spline that holds that mesh in place.

## How do you measure a spline?

To dimension a spline, you must dimension its endpoints. You need not add spline dimensions if the spline is attached to other geometry and the endpoints are dimensioned. You can dimension spline endpoints using linear dimensions, tangency (angular) dimensions, and radius-of-curvature dimensions.

## How are splines measured?

The pitch of a spline gear is determined by the number of teeth and the preferred pitch diameter. The manufacturing of spline shafts, or spline cutting, is done by using broaching machines.