catia逆向建模范例(油壶)

CATIA Training

Quick Surface Reconstruction

Detailed Steps

Table of Contents

Plastic bottle exercise ................................................................................................................................... 3 Step (1): Scans creation ............................................................................................................................ 3 Step (2): Curves creation ........................................................................................................................... 5 Step (3): Surfaces creation ...................................................................................................................... 10 Step (4): Creating the rough model ......................................................................................................... 18 Step (5): Filleting the model..................................................................................................................... 21

Plastic bottle exercise

Step (1): Scans creation

Load the file exercise_start.CATPart from the indicated directory. Start the Quick Surface

Reconstruction workbench.

1. Create a first scan at the symmetry plane:

a. Click on the Planar sections icon

b. Select the tessellation c. Click on the Flip to XZ

button

d. Activate the contextual menu of the plane manipulator e. Select the Edit option

f. Set the Y coordinates to 0 g. Click the Close button

h. Check the Grouped into one element option i. Click on the Apply button j.

Click on the OK button

2. Create a second scan by isoslope computation:

a. Click on the Slope analysis icon

b. Select the tesselation c. Click on the Flip to X

button

d. Set the Filter value to 250 e. Check the Distinct option f.

Click on the OK button

3. Create a third scan by planar section:

a. Click on the Planar sections

icon

b. Select the tessellation

c. Click on the Flip to XY

button

d. Activate the contextual menu of the plane manipulator

Quick Surface reconstruction e. Select the Edit option

f. Set the Z coordinates to 205 g. Click the Close button h. Check the Distinct option i. Click on the Apply button j.

Click on the OK button

4. Create a last scan by planar sections:

a. Click on the Planar sections

icon

b. Select the tessellation c. Click on the Flip to XY

button

d. Activate the contextual menu of the plane manipulator e. Select the Edit option

f. Set the Z coordinates to 0 g. Click the Close button h. Check the Distinct option i. Click on the Apply button j.

Click on the OK button

Detailed Steps

Step (2): Curves creation

Before starting the curves creation, create a new open body and name it Curves creation. You can also load the file End_step1.CATPart

from the indicated directory

1. Create curves from the scan on the symmetry plane

a. Click on the Curve from scan icon b. Select the first created scan c. Set the Accuracy value to 0.5 d. Set the Degree value to 6 e. Set the Number value to 20

f. Activate the Smoothing creation mode g. Set the Split angle value to 45

h.

Add two splitting points below the top fillet and before the handle fillet with point

continuity

i.

Add one splitting point below the fillet handle with

point

continuity

j. Add 4 splitting point at the bottom of the bottle with Tangent

continuity

k. Add one splitting point below the fillet handle with point continuity

l.

Add 2 splitting points as shown with point

continuity

Total splitting points should look like this:

m. Click on the Apply button n. Click on the OK button

2. Create a curve from the second scan

a. b. c. d.

Click on the Curve from scan

icon Select the scan created by isoslope Set the Split Angle value to 90

Remove all the splitting points using the Remove split option of the contextual menu of each point

e. Remove both extremities using the Remove split option of the contextual menu of each

extremity

f.

Add one splitting point on the scan below the top fillet and before the top intersection scan

g.

Add one splitting point on the scan below the bottom intersection scan

h. Set the accuracy value to 1mm

i. Set the Order value to 4 j. Click on the Apply button k.

Click on the OK button

3. Create a curve on the top scan

a. Click on the Curve from scan

icon

b. Select the third scan created

c. Set the Accuracy value to 0.5mm d. Click on the Apply button e.

Click on the OK button

4. Create a curve on the last scan

a. Click on the Curve from scan

icon b. Select the last scan created

c. Add splitting points with tangent

continuity as shown

d. Click on the Apply button

e. Click on the OK button

5. Hide all the scans

6. Trim all the curves created

a. Click on the Curves slice

icon b. Select all the curves using a trap c. Click on the More button

d. Set the Max distance to 2mm

e. Click on the Apply button to preview the intersecting points f.

Click on the OK button

7. Delete the two curves in the handle:

8. Start the Wireframe and Surface design workbench

9. Create a blending curve in the left handle area

a. Click on the Connect curves icon b. Select the extremity point of the top curve c. Select the extremity point of the bottom curve

d.

Reverse the blending direction if necessary

e. Click on the OK button

10. Create a blending curve in the right handle area

a. Click on the Connect curves icon b. Select th …… 此处隐藏：7753字，全部文档内容请下载后查看。喜欢就下载吧 ……