Post on 07-Jul-2016
description
Lecture 2 Part design (solid modeling )
REFERENCE ELEMENTS• No mass and volume• Used only to assist you in the creation of the models
• Invoke the tools to create reference elements using the Reference Elements toolbar
The Reference Elements toolbar
Reference Planes• Default Planes
-xy plane -yz plane -zx plane
Creating New PlanesToolbar: Reference Elements > Plane
The Plane Definition dialog box
• Creating a Plane at an Offset from an Existing Plane/Planar Face
• Creating a Plane Parallel to an Existing Plane and Passing through a Point
Part Design
• Base Features
– Pad – Pocket– Shaft
• Reference Elements
– Point– Line– Plane
• Dress-up Features
– Fillets– Chamfers
• Transformation Features
– Translation– Rotation– Mirror– Pattern– Scale
Slot Hole Groove
Draft Shell Thickness
CREATING BASE FEATURES BY EXTRUSIONMenu: Insert > Sketch-Based Features > PadToolbar: Sketch-Based Features > Pads > Pad
The Pads toolbar
• Select the sketch and then choose the Pad button from the Pads toolbar
The Pad Definition dialog box
The sketch after exiting theSketcher workbench
Dynamically dragging the Limit handle to specify the depth of extrusion
The model after extruding the sketch
• Extruding the Sketch Using the Profile Definition Dialog Box
The Profile Definition dialog box
A multi-contoured sketch
Extruded contours
CREATING BASE FEATURES BY REVOLVING SKETCHES
Menu: Insert > Sketch-Based Features > ShaftToolbar: Sketch-Based Features > Shaft
The Shaft Definition dialog box
The sketch and the axis aroundwhich the sketch will be revolved
The model after creating the shaft feature
Tutorial 2In this tutorial, you will create the base feature of the model shown in Figure by extruding a sketch drawn on the yz plane
Figure A Solid model for Tutorial 2 Figure B Views and dimensions for Tutorial 2
Tutorial 1In this tutorial, you will create the model shown in Figure A. Its views and dimensions are shown in Figure B.
Figure A Solid model for Tutorial 1 Figure B Views and dimensions for Tutorial 1
OTHER SKETCH-BASED FEATURESCreating Drafted Filleted Pad Features
Menu: Insert > Sketch-Based Features > Drafted Filleted PadToolbar: Sketch-Based Features > Pads drop-down > Drafted Filleted Pad
• Extruded feature having drafted faces and filleted edges• Draw a sketch and exit the Sketcher workbench• Choose the Drafted Filleted Pad button from the Pads toolbar
The Drafted Filleted Pad Definition dialog box
The sketch to be extruded and theplane to be selected as the second limit
The resulting drafted filleted pad
Creating Multi-Pad Features
Menu: Insert > Sketch-Based Features > Multi-PadToolbar: Sketch-Based Features > Pads drop-down > Multi-Pad
The multi-loop sketch to beextruded
The resulting extruded feature using the Multi-Pad tool
The sketch to be extruded to create the pocket feature
The resulting pocket feature
Pocket feature with the defaultmaterial removal side selected
Pocket feature after flipping the material removal side
Creating Drafted Filleted Pocket Features
Menu: Insert > Sketch-Based Features > Drafted Filleted PocketToolbar: Sketch-Based Features > Pockets drop-down > Drafted Filleted Pocket
The drafted filleted pocket feature
Creating Multi-Pocket Features
Menu: Insert > Sketch-Based Features > Multi-PocketToolbar: Sketch-Based Features > Pockets drop-down > Multi-Pocket
The multi-pocket feature
Creating Groove FeaturesMenu: Insert > Sketch-Based Features > GrooveToolbar: Sketch-Based Features > Groove
The Groove Definition dialog box
Sketch for creating the groove feature The resulting groove feature
Tutorial 2In this tutorial, you will create the model shown in Figure A. Its views and dimensions are shown in Figure B.
Figure A Model for Tutorial 2 Figure B Views and dimensions for Tutorial 2
Tutorial 3In this tutorial, you will create the model shown in Figure A. The views and dimensions of the model are shown in Figure B.
Figure A Solid model for Tutorial 3 Figure B Views and dimensions for Tutorial 3
The following steps are required to complete this tutorial:
a. Draw the sketch of the base feature on the yz plane, and extrude the sketch to the required distance using the Pad tool, refer to Figures C and D.
Figure C The sketch of the base feature Figure D The model after creating the base feature
b. Create the second feature, which is a pocket feature, refer to Figures E and F.
Figure E The sketch of the second feature
Figure F Model after creating the second feature
e. Create the last feature of the model, which is the pocket feature, refer to Figures K and L.
Figure K Sketch of the fifth feature Figure L The final model
c. Create the third feature by extruding the sketch drawn on a plane at an offset distance from the xy plane, refer to Figures G through H.
Figure G Sketch of the third feature Figure H Surface to be selected
d. Create the fourth feature, which is a groove feature, refer to Figures I and J.
Figure I Sketch of the fourth feature Figure J The model after creating the fourth feature
Creating a Shell Feature
The Shell Definition dialog box
Menu: Insert > Dress-Up Features > ShellToolbar: Dress-Up Features > Shell
Faces to be selected for removal Resulting shelled model
Tutorial 2In this tutorial, you will create the model of the Vice Jaw shown in Figure A. Its views and dimensions are shown in Figure B. After creating this model, you will edit some of its dimensions. Figure C shows the views and dimensions that need to be edited.
Figure A Model of the Vice Jaw for Tutorial 2
Figure B Views and dimensions of the Vice Jaw for Tutorial 2
Figure C Dimensions of the Vice Jaw to be modified
a. Create the base feature of the model by extruding the sketch drawn on the zx plane, refer to Figure D and E.
Figure D Sketch of the base feature
Figure E Model after creating the base feature
b. Create the second feature of the model by extruding the sketch drawn on the front face of the base feature, refer to Figures F and G.
Figure F Sketch of the second feature
Figure G Model after creating the second feature
c. Create the third feature of the model by extruding a rectangular sketch drawn on the front face of the base feature, refer to Figures H and I.
Figure H Sketch of the third feature
Figure I Model after creating the third feature
d. Create the holes using the Hole tool, refer to Figures J and K.
e. Apply fillet to the edges of the model, refer to Figure K.
Figure J The model after creating the counterbore hole
Figure K Final model after creating all features
f. Modify the model, refer to Figure L.
Figure L The model after modifying the design
Tutorial 3In this tutorial, you will create the model shown in Figure A. After creating this model, you will edit its design by replacing the counterbored holes with countersunk holes. Also, replace the rectangular slot by an elongated slot. Figure B shows the model after editing. The views and dimensions of the model to be created are shown in Figure C.
Figure A Model for Tutorial 3 Figure B Final edited model
Figure C Views and dimensions of the model for Tutorial 3
a. Create the base feature of the model by extruding the sketch drawn on the yz plane, refer to Figure D.
Figure D Model after creating the base feature
The following steps are required to complete this tutorial:
b. Create a pad feature by extruding a sketch drawn on the front face of the base feature, refer to Figure E.
Figure E Model after creating the second feature
c. Create the third and forth features by extruding the sketch drawn on the front face of the second feature, refer to Figures E and F.
Figure E Model after creating the third feature
Figure F Model after creating the Pocket feature
d. Create the holes using the Hole tool and fillet the required edges, refer to Figure G.
Figure G The final model after creating all features
f. Edit the design of the model, refer to Figures H and I
Figure H Edited sketch of the pocket feature
Figure I Final edited model
ADVANCED MODELING TOOLSCreating Rib Features
Menu: Insert > Sketch-Based Features > RibToolbar: Sketch-Based Features > Rib• Sweep an open or a closed profile along an open or a closed center curve
The Rib Definitiondialog box
Closed profile and the center curve tobe selected
Resulting rib feature
An unattached profile and the centercurve
Resulting rib feature
The profile, center curve, andpulling direction to be selected
The rib feature created by selectingthe Keep angle option
The rib feature created by selecting the Pulling direction option
Center curve, section, and pullingdirection to be selected
The rib feature with the Moveprofile to path check box selected
Creating Slot FeaturesMenu: Insert > Sketch-Based Features > SlotToolbar: Sketch-Based Features > Slot
The Slot Definition dialog box The profile and the center curve
• Remove the material by sweeping a profile• Choose the Slot button from the Sketch-Based Features toolbar
Resulting slot feature The slot feature after selectingthe Merge slot’s ends check box
Creating Multi-Sections Solid FeaturesMenu: Insert > Sketch-Based Features > Multi-sections SolidToolbar: Sketch-Based Features > Multi-sections Solid
The Multi-Sections Solid Definition dialog box
Sections to be selected to create the multi-sections solid
Preview of the resulting multi-sections solid feature
• Creating Multi-Sections Solid Sections with Unequal Number of Vertices
The Multi-Sections Solid Definitiondialog box after choosing the Coupling tab
The Coupling dialog box
Sections, closing points, andcouplings
Resulting multi-sections solid feature
• Creating a Multi-Sections Solid Feature between a Circular and a Polygonal Section
Sections, closing points, and couplings The preview of the resultingmulti-sections solid feature
• Creating a Multi-Sections Solid of the Sections along a Spine
The Multi-Sections Solid Definition dialog box after choosing the Spine tab
The sections and spine to be selected
Multi-sections solid feature createdwithout selecting the spine
Multi-sections solid featureafter selecting the spine
• Creating a Multi-Sections Solid Feature with Relimitations
The Multi-Sections Solid Definition dialog box displayed after choosing the Relimitation tab
The sections and spine tobe selected
The multi-sections solid featurecreated on selecting the relimitation check boxes
The multi-sections solid featurecreated after clearing the relimitation check boxes
Creating Removed Multi-Sections Solid Features
Menu: Insert > Sketch-Based Features > Removed Multi-sections SolidToolbar: Sketch-Based Features > Removed Multi-sections Solid
The Removed Multi-Sections Definition dialog box
Sections and the spine to be selected Resulting removedmulti-sections solid feature
Tutorial 1In this tutorial, you will create the model of the Upper Housing shown in Figure A. Its orthographic views and dimensions are shown in Figure B.
Figure A Model of the Upper Housing for Tutorial 1
Figure B Views and dimensions of the Upper Housing for Tutorial 1
The following steps are required to complete this tutorial:a. Create the base feature of the model, refer to Figure C.
Figure C Base feature of the model
b. Create the rib feature, refer to Figures D through G.
Figure D Sketch of the center curve Figure E Sketch of the profile
Figure F Sketches for the rib feature Figure G The model after creating the rib feature
c. Create the multi-sections solid feature, refer to Figures H and I.
Figure H Second section of the multi-sections solid feature
Figure I Model after creating the multi-sections solid feature
d. Fillet the edges of the model, refer to Figure J.
Figure J Model after filleting the edges
e. Shell the model by removing the bottom and the left planar face of the model, refer to Figure K.
Figure K Model after shelling
f. Create the other features to complete the model, refer to Figure L.
Figure L Final model of the Upper Housing
Tutorial 2In this tutorial, you will create the model of the Helical Gear shown in Figure A. Its views and dimensions are shown in Figure B.
Figure A Model of the Helical Gear for Tutorial 2
Figure B Views and dimensions for Tutorial 2
a. Create the base feature of the model, refer to Figures C and D.
Figure C The sketch for creating the Shaft feature
Figure D Base feature of the model
b. Create a pad feature on the right of the base feature and then pattern it using the Circular Pattern tool, refer to Figures E and F.
Figure E The sketch for creating the pad feature
Figure F The model after creating the circular pattern of the pad feature
c. Draw the sketch of the first section of the gear tooth on the front face of the base feature, refer to Figures G and H.
Figure G Sketch created on the front planar face
Figure H Remaining entities of the sketch created
d. Draw the sketch of the second section, refer to Figure I.
Figure I The second section for the multi-section solid
e. Draw the sketch of the third section of the gear, refer to Figure J.
Figure J The third section for the multi-section solid
f. Create a multi-sections solid feature using three sections, refer to Figure K through M.
Figure K Closing points and their directions
Figure L The preview of the resultant model
Figure M Final model of the Helical gear