Tuesday, July 22, 2014

Solid Primitives

Predefine solid shape




Box



Define by length, width, height
Create building, structure, furniture, mechanical, electrical parts


 

Wedge

Similar to box, but has been slice off
Create side roof, tapered part




Pyramid


A base with 3 or more equare sides
Top only a point or equal /un-equal radius with base




Cone


The base can be circular or elliptical
Top can be a point or different radius




Cylinder


Column with circular or elliptical shape
Create wire, pipe




Sphere


Similar with 2D circle
Create ball




Torus


With a outer and inner radius
Create donut or tube shape object




Polysolid




Similar to 2D polyline
Define by width, height, justify
Create wall-like solid





Justify - Left




Measure based on exterior face

Justify - Center




Measure based on center of wall

Justify - Right




Measure based on interior face


Modify Solid Primitive




You can modify the solid primitives by the triangle grips


Appearance of Solid


Isolines




Isolines = 4                  Isolines = 8

Isolines display on curved object

Silhouette Edges




Dispsilh = 0             Dispsilh = 1

Control by dispsilh variable

Facet Resolution




Facetres = 0.2              Facetres = 1

Control the smoothness of shaded

Ex: Creating Cabinet by Solid Primitive


Solid tab > Primitive panel > Box



Draw a box 20 x 300 x 730



Create the 2nd panel 720 x 300 x 20



Change the visual style to X - Ray



Create a back panel 720 x -20 x 710



Create a front door 360 x 20 x 710



Copy a right door and right panel



Create a top panel from top-left corner 798 x -315 x 20

Select the top panel



Move the top panel to left 19 by Move Gizmo


Create a Knob



Draw a guide line to left 50 from the mid of the left door


Solid tab > Primitive panel > Cylinder



Create a base R12.5 H3 by cylinder



Create a support R2 H3



Create a ball R10 by Sphere



Select the sphere



Move the sphere up 10 by Move Gizmo




Rotate and Move the Knob


Solid tab > Selection panel > Rotate Gizmo



Select all the parts of the knob



Rotate the whole knob 90 degrees by X axis



Move the knob to the endpoint of the guide line



Copy another knob to the right door at the same location

Monday, July 21, 2014

Composite Solid

Merge 2 or more solids into a single, more complicated solid by Union, Subtract, Intersect Boolean operations



Boolean Operation


Union
Combine 2 or more 3D solids/ surfaces/ regions into a single composite solid/ surface/ region
Only same type of object can be combine



Subtract
Combine selected objects by Subtraction
Select 1st set of objects (keep), press Enter
Select 2nd set of objects (subtract), press Enter



Intersect
Create a solid/ region from selected overlapping objects



Modify Composite Solid by History



History must be record before the Boolean operation



The you can show the history


Solid tab > Primitive panel > Solid History


Ctrl + Select the subtracted object

Sunday, July 20, 2014

Ex: Create Shaft Holder by Boolean Operation

2D drawing



Home tab > Modeling panel > Box



Create a box 233 x 24 x 59



Create a cylinder R86 H24



Create a cylinder R57.5 H84 at the same location



Create a cylinder R35 H84



Create a box 233 x 24 x 86



Change the visual style to Wireframe

Home tab > Solid Editing panel > Subtract



Select the biggest cylinder as the 1st set



Press Enter



Select the new created box



Press Enter
Change the visual style to Conceptual
You can see the biggest cylinder subtract by the box

Create a cylinder R20 H30


Copy another cylinder at 102

Change the visual style to Wireframe



Draw guide line 20 x 51 from the midpoint of the back of box



Create another 2 cylinders R11 H30 & R9.38 H30



Subtract them



Move the 2 cylinders by top center point to the end of the guide line

Start the Subtract command



Select all solids except the 3rd cylinder, press Enter



Select the 3rd cylinder, press Enter



Create a box 115 x 84 x 57.5 to cover the top portion of the cylinder

Start the Subtract command



Select the bottom solid, press Enter



Select the box on top, press Enter



Create 2 cylinders R11 H30, R9.38 H60 on the 2 holes



Subtract them