Datum > CurveResume > Done KIM,ME,NIU Note on Projected Datum Curves Note that the projected entity is limited to the size of the projected plane. The first example is ok, but the

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Datum > Curve

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Intersect

First create at least one quilt on the

surface of the model. Feature > Surface

(> New) > Copy (do not use offset that

creates a surface off the solid surface

even with zero offset) > pick on top

surface > Done > Ok

At least one surface must be a quilt for this

menu. The menu [Composite] can be

used between solid surfaces desired.

Pick on the quilt if not selected yet.

Edit > Intersect > ctrl + pick on the front solid (can select more

than one solid surfaces). See the References interface that now

show both the quilt and solid surface.

Done

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Dimension

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Thru Points

1. Datum Curve > Thru Points > Done

2. Spline / Whole Array / Add Point > Pick > pick two end points of

front inclined edge > Done

3. Select [Tangency] in the dialog > Define > Start / Crv/Edge/Axis /

Tangent > Select > pick on the edge to which the datum curve

must be tangent. If necessary, flip the arrow for proper tangency

> Okay. Note the tangency is defined relative to the direction of

the curve.

4. End / Crv/Edge/Axis / Tangent > Select > pick another edge to

which the curve must be tangent.

5. Done / Return > Ok

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If more than two points are selected, then they can be connected in

several different ways.

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Copy

Edit > Feature Operations > Copy

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Projected

1. First, create a datum curve by Thru Points with Tangency as

shown above.

2. Pick on the datum curve to project > Edit > Project

3. Pick on the left surface > click References interface > One by

One Chain / Single Surfaces > click Direction References. Now,

define the direction.

4. Click Datum Axis > pick the first corner at the front face > ctrl +

pick the rear corner > Ok.

5. Resume > Done

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Note on Projected Datum Curves

Note that the projected entity is limited to the size

of the projected plane. The first example is ok,

but the second is not allowed because the

projected curve will be out of the destination

plane.

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Another example of the projected datum curve

1. First extrude the solid with curved top with a spline

2. Click References > select Project a sketch > Sketch > sketch the

datum curve on a datum plane above the solid as shown below

3. Done

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Wrap (old Formed)

1. First, create the solid block by Extrude.

2. Create the datum curves at front and rear inclined edges.

3. Form a quilt by Boundary Blend.

4. Edit > Wrap > click Destination interface > pick on the round

quilt

5. Sketch > pick on top surface of the block > Sketch (begins) >

Close (references)

6. Draw a square with dimensions shown above

7. Done (sketch) > Done (feature)

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Offset: Along the Surface

1. (Create a datum curve along the front inclined edge) Pick on the

solid > pick on the front edge of the inclined surface > Copy >

Done

2. Pick on the datum curve just created > Edit > Offset.

3. See the Direction interface with default Along Surface

4. Pick on the front face > enter an offset value 1.0 > Done (see the

result below)

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Another Example

In this example, ctrl + pick all the curves and specify the offset

distance.

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Offset: Normal to the Surface

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Offset: Graph

1. As in the previous case, for the datum curve at front edge, use Edit

> Offset

2. Click the front face > select Direction as Normal to Surface > enter

1.0 for Scale

3. Click Graph interface > Insert > Model Datum > Graph > enter a

name > Ok

4. Sketch a spline as shown below and place a coordinate at the

point of the spline that should correspond to the starting point of the

offset curve > use Constraint Horizontal to align two endpoints

horizontally > change the total length to 1.0

5. Done > Resume > Done

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From Equation

1. Datum Curve > From Equation > Done

2. Select > Pick > pick on a coordinate system

3. Cartesian > enter equations in the editor window below > File >

Save > Close (editor) > Ok

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Example 1: Projected

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Dimensions of Block

Use the spline menu in sketch mode for this curve.

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Dimensions of Datum Curve

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Datum Curve and Starting Point of Chain

Suppose a datum curve is to be created by

copying an existing line (i.e., the outer edge

in the figure). But the datum curve must

have the starting point in the middle of the

larger arc (i.e., at top of the figure).

First, create the basic feature by Protrusion.

In the sketcher [Divide] the trajectory at

midpoint of the larger arc (for future use in

datum curve). This division must be done

before creation of datum curve by [Edge >

Offset]. If it is done after creation of datum

curve, the starting point remains same even

after [Divide].

Create the datum curve [Sketch > Edge >

Offset > Type: Chain > select the first line

segment shown in figure > Accept > -1 >

Done > Ok

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Note that the end point of the first line

clockwise (CW) becomes the starting point

of the chain. The chain goes around CW.

This way a point can be easily placed at the

starting point of the chain curve with option

[Length Ratio]. The starting and ending

points have length ratios of zero and one.

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Dimension

Just to see how to use the starting point of the chain curve, add a

point at the starting point [Datum Point > On Curve > Length

Ratio > the first line segment next to the hole position > Accept

> -1 > Done > Ok

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Style

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1. Style > Active Datum Plane > pick the inclined plane

2. Click Curve tool > click points to create a spline curve. You

may edit it with Edit Curve tool.

3. Click Show All Views and see the views below

4. Done