Test 3

title: Electronic description: Documentation of test final.

3rd Test

Objective

The advanced level Test 3 consists of modeling a complex part that will be validated by achieving the appropriate mass.

Material specifications:

Material: 1060 Alloy Aluminum
Density: 2700 Kg/m³

Summary

This part was mainly created using the following features:

Extruded boss
Extruded cut

Mass Table

Configuration	Mass (g)
(a) A = 193 mm; B = 88 mm; W = B/2 mm; X = A/4 mm; Y = B+5.5 mm; Z = B+15mm	1400.64
(b) A = 205 mm; B = 100mm; W = B/2 mm; X = A/4 mm; Y =B+5.5 mm; Z = B+15 mm	1651.39
(c) A = 210 mm; B = 105 mm; W = B/2 mm; X = A/4 mm; Y = B+5.5 mm; Z = B+15mm	1760.41

Video

Files available for download

Download the modeling files by clicking by following these links :

Part Creation Process

Step 1: Initial Sketch

On the front plane, draw the following view while respecting the dimensions and angles.

Step 2: Base Extrusion

Use the extruded boss feature and extrude the selected region by 96.5 mm using the mid-plane option.

Step 3: Trapezoid Shape

On the top plane, make the following sketch with a 6 mm offset to get the trapezoid shape.

Step 4: Through Extrusion

Make a through all extruded boss.

Step 5: Material Removal Series

Proceed with a series of extruded cuts.

Step 6: First Cut

Make a through all extruded cut from the sketch.

Step 7: Bilateral Cuts

Using the first initial sketch, make an extruded cut on both sides of the region, leaving a 5 mm gap between them. Each cut is made with a 2.5 mm offset.

Step 8: Intermediate Result

After this operation, we obtain an intermediate part form.

Step 9: Additional Material Removal

Continue with material removals for the region of sketch 1 (the first sketch).

Step 10: Mid-plane Boss

Still using the first sketch, create a 5 mm extruded boss with the mid-plane option.

Step 11: Final Features

By making an extruded boss from the sketch on the top plane and extruded cuts for the 10 mm holes, we obtain the penultimate part.

Step 12: Final Part

Apply the material and the desired display mode. This gives us the final Test 3 part.

Variable Dimension System

Step 13: Global Variables Setup

For this test, dimensions A, B, Z, Y, X, W must be modified to obtain a new part with a different mass each time. To achieve this:

Use the equation tool
Add global variables
Each time we modify these global variables, the dimensions are adjusted automatically
This generates a new part configuration

Step 14: Variable Linking Methods

When dimensioning to use variables:

Method 1: Use ”=” which allows selection of the variable in question

Method 2: Link the dimension already placed on the drawing to the global variable already created

Step 15: Multiple Configurations

At the end of this series of variable modification operations, we obtain 3 different pieces of different masses. The masses of the pieces are designated as configurations a, b, and c.

(a) A = 193 mm; B = 88 mm; W = B/2 mm; X = A/4 mm; Y = B+5.5 mm; Z = B+15mm;

The part mass is : 1400.64 gramms

(b) A = 205 mm; B = 100mm; W = B/2 mm; X = A/4 mm; Y =B+5.5 mm; Z = B+15 mm;

The part mass is : 1651.39 gramms

(c) A = 210 mm; B = 105 mm; W = B/2 mm; X = A/4 mm; Y = B+5.5 mm; Z = B+15mm;

The part mass is : 1760.41 gramms

Alternative Perspectives

Multiple paths allow for creating the same part. The part in this test can also be created using the following alternative method:

Alternative Method A

On the top plane, create the following sketch and make an extruded boss of “B” mm.

Alternative Method B

On the front plane, make the following sketch and proceed to remove extruded material to obtain the part.

Alternative Method C

Use global variables or dimension directly on the sketches to have the three requested parts with the desired dimension specifications.

Note: This document references multiple technical drawings and sketches that guide the 3D modeling process. The parametric approach using global variables allows for efficient generation of multiple part variants.

Bonus

The part mass is 7854,78 gramms