09-02-2013, 10:30 AM
A Step-by-Step Project Based Approach Utilizing 3D Solid Modeling
1A Step-by-Step.pdf (Size: 2.27 MB / Downloads: 152)
Project Overview
Start the design of the FLASHLIGHT assembly according to the customer’s
requirements. The FLASHLIGHT assembly will be cost effective, serviceable and
flexible for future manufacturing revisions.
A template is the foundation for a SolidWorks
document. A template contains document
settings for units, dimensioning standards and
other properties.
Design Intent
The SolidWorks definition of design
intent is the process in which the
model is developed to accept future
changes.
Models behave differently when
design changes occur. Design for
change. Utilize geometry for
symmetry, reuse common features and
reuse common parts.
Design Intent in the Sketch
In SolidWorks, relations between sketch entities and
model geometry, in either 2D or 3D sketches, are an
important means of building in design intent. In this
chapter - we will only address 2D sketches.
Apply design intent in a sketch as the profile is
created. A profile is determined from the Sketch
Entities. Example: Rectangle, Circle, Arc, Point,
Slot etc.
Design Intent in the Feature
Build design intent into a feature by addressing
symmetry, feature selection, and the order of
feature creation.
Example A: The Boss-Extrude1 feature (Base
feature) remains symmetric about the Front Plane.
Utilize the Mid Plane End Condition option in
Direction 1. Modify the depth, and the feature
remains symmetric about the Front Plane.
Example B: Do you create each tooth separate
using the Extruded Cut feature? No. Create a
single tooth and then apply the Circular Pattern
feature. Create 34 teeth for a Circular Pattern
feature. Modify the number of teeth from
32 to 24.
Project Situation
You work for a company that specializes in providing promotional tradeshow products.
The company is expecting a sales order for 100,000 flashlights with a potential for
500,000 units next year. Prototype drawings of the flashlight are required in three weeks.
You are the design engineer responsible for the
project. You contact the customer to discuss design
options and product specifications. The customer
informs you that the flashlights will be used in an
international marketing promotional campaign.
BATTERY Part-Extruded Boss/Base Feature
The Extruded Boss/Base feature requires:
• Sketch plane (Top)
• Sketch profile (Rectangle)
o Geometric relations and dimensions
• End Condition Depth (Blind) in Direction 1
Create a new part named, BATTERY. Insert an Extruded
Boss/Base feature. Extruded features require a Sketch plane. The
Sketch plane determines the orientation of the Extruded Base
feature. The Sketch plane locates the Sketch profile on any plane
or face.
The Top Plane is the Sketch plane. The Sketch profile is a
rectangle. The rectangle consists of two horizontal lines and two
vertical lines.
BATTERY Part-Extruded Cut Feature
An Extruded Cut feature removes material. An
Extruded Cut feature requires:
• Sketch plane (Top face)
• Sketch profile (Offset Entities)
• End Condition depth (Blind) in Direction 1
The Offset Entity Sketch tool uses existing geometry, extracts an edge or face and locates
the geometry on the current Sketch plane.
Offset the existing Top face for the 2D sketch. Utilize the default Blind End Condition in
Direction 1.
BATTERY Part-Extruded Boss/Base Feature
The Extruded Boss feature requires a truncated cone shape to represent the geometry of
the BATTERY terminals. The Draft Angle option creates the tapered shape.
Sketch the first circle on the Top face. Utilize the Ctrl key to copy the first circle.
The dimension between the center points is critical. Dimension the distance between the
two center points with an aligned dimension. The dimension text toggles between linear
and aligned. An aligned dimension is created when the dimension is positioned between
the two circles.
An angular dimension is required between the Right Plane and the centerline. Acute
angles are less than 90°. Acute angles are the preferred dimension standard. The overall
BATTERY height is a critical dimension. The BATTERY height is 4.500in, [114.3].