2nd Test

Ojectives

Evaluate your advanced CAD skills using SolidWorks through :

Designing parts,

Modifying existing components,

And creating an assembly.

Summary

Files available for download

Download the modeling files by clicking by following these links :

Part 1

Case 1 : SolidWorks File - Part1_case1
Case 2 : SolidWorks File - Part1_case2

Part 2

Part 2 : SolidWorks File - Part2

Part 3

Part 3 : SolidWorks File - Part3

Assembly

Assembly - a : SolidWorks File - Assembly_a
Assembly - b : SolidWorks File - Assembly_b

Design - Summary table of results

Part	Specifications	Mass (g)
Part I-a	A = 81,00 ; B = 57,00 ; C = 43,00	939,54
Part I-b	A = 84,00 ; B = 59,00 ; C = 45,00	1032,32
Part II	A = 86,00 ; B = 58,00 ; C = 44,00 + Material removal	628,18
Part III	Pocket feature added	432,58

Assembly - Summary table of results

Specifications	Center of mass coordinates (mm)
X	Y	Z
A = 25 degrees; B = 125 degrees; C = 130 degrees	348.66	-88.48	-91.40
A = 30 degrees; B = 115 degrees; C = 135 degrees	339.43	-98.39	-52.36

Specifications

Center of mass coordinates (mm)

A = 25 degrees; B = 125 degrees; C = 130 degrees

348.66

-88.48

-91.40

A = 30 degrees; B = 115 degrees; C = 135 degrees

339.43

-98.39

-52.36

Video

Materials

Execution

Design and modification of parts

In this part we will have to create a part in the first part and then modify it in the other two parts.

Part I

Unit systems: MMGS (millimeter, gram, second);

Decimals: 2

All holes are through holes unless otherwise noted.

Material : AISI 1020 steel; Density: 0.0079 g/mm^3

For each value of the geometric parameters A, B, and C, let's create the part and then bring out the mass of the part.

--> Case 1: A= 81.00; B=57.00; C= 43.00

Choice of plan

Position yourself on the origin of the reference point and make a set of broken lines.

Make the rating of the drawn lines.

Click on the Point tool and position the center of the circle R29 (dimensioned at 19 mm from the origin of the reference).

Select the circle tool and create the circle corresponding to the point positioned previously.

Use the line tool to draw a horizontal line 19 mm from the horizontal axis passing through the axis of the marker.
Use the Adjust Features tool and delete the unnecessary portions of the circle.
Take the sketch fillet tool to create the rounding R5 between the line drawn previously and the portion of the circle R29.

Use the smart quote tool to quote dimension A.

Choose the line tool and create a set of broken lines.

Choose the smart dimension tool to dimension each line.

Make a circle of R19 using the circle tool at any point in the workspace.

Right-click and hold the Ctrl key to select the circle and the line inclined 10 degrees from the horizontal and apply the tangent constraint.

Right click and hold the ctrl key to select the circle and… and apply the coincidence.

Adjust the unnecessary portions of circle R19

Draw the horizontal and vertical axes passing through the center of circle R7 (center of circle R14) and take the measurements.

Select the sketch chamfer tool and create the chamfer of 5 and 7

Exit sketch

Extrude to depth C in the features section with the boss extrusion tool.

Validate the extrusion

Right click on material (unspecified) then click edit material, then apply and close

Click on evaluate and choose mass properties, then configure

--> Case 2: A= 84.00; B=59.00; C= 45.00

Right-click on the recently created sketch and then edit it. This allows you to return to the base sketch to modify the A and B dimensions defined above.

Double-click on dimension A=81mm then change it to A=84mm.

Double-click on dimension B= 57mm then change it to B=59mm.

Then exit the sketch and return to the feature tools section.

Right click on Boss.-Extru.1 then edit the function, this allows you to modify the extrusion depth C.

In the feature manager, change the extrusion depth from C=43mm to C=45mm, then validate.

After validation the mass of the part is m=1032.07g**

Part II

Let's use the part created in the previous question and modify it by removing material and changing the following parameters:

A= 86.00; B=58.00; C= 44.00

As before, repeat the process of modifying dimensions A, B, CD In this section, A= 86 mm; B=58 mm; C=44 mm.

Modifying the basic sketch

After modifying dimensions A, B and C, return to the basic sketch, still following the usual methodology.
Use the line tool to draw two lines, one vertical and one horizontal.
Use the smart dimension tool to dimension these lines relative to a fixed line as identified in the screenshot below

Click on the point tool to place a point at any position on the sketch (this point consists of the intersection of the circle of radius R41 and the inclined line as shown in the screenshot).
Use the smart dimension tool to locate this point on the sketch (36 mm dimension framed by a rectangle on the capture).
Click on the circle tool and then draw a circle of any radius passing through the recently defined point.
Click on the smart dimension tool to define the radius R41
Locate the center of the circle so that it lies on the vertical line (far right of the sketch)
Use the Adjust Features tool for unwanted portions of the circle.
Click on the circle tool then create a circle of any radius and arbitrary center
Use the smart dimension tool to dimension the circle drawn previously (diameter 11) then locate its center according to the dimensions in the capture below.

Exit sketch
1. Volume creation
Click on the sketch in the future manager
Click on the extrusion removal tool then select the entities to extrude (because these entities have the same extrusion depth).
Apply extrusion material removal settings.

To validatethe execution of the function.
Click on the sketch (return to the base sketch)
Click on the extrude material removal tool and then select the entity to extrude.
Apply the extrusion material removal settings (7 mm offset paying attention to the offset direction and 24 mm material removal depth)

To validatethe execution of the function

Click on the sketch in the future manager
Click on the extrusion material removal tool then select the entity to extrude (inside the 11 mm diameter circle).
Apply the extrusion removal settings (change the blind option to through all).

To validatethe execution of the function
Click on Evaluate then select Mass Property

Part III

Let's use the part created in the previous question and modify it by adding a pocket.

Editing the sketch

Right-click on the part and then click on the Edit Sketch icon
Click on the Offset tool
Select the entities to shift

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\partie2_Decalage1.png$
Click the Adjust Features tool to remove unsuitable features

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Partie2_esquisse decalé.png$
Exit sketch
1. Volume creation

In this we will have to make two removals of material of different extruded depth (7mm and 32mm).

Material removal depth 32 mm
Select sketch 1
Click on Function > Extruded Material Removal
Select the relevant entity
Apply material removal settings (depth, extrusion direction, etc.) in the Feature Manager

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Partie 2_Enlevement de matiere 1.png$

Then Validate
Material removal depth 7 mm
Click on Function > Material Removal
Select the relevant entity
Apply material removal parameters (depth, extrusion direction, etc.) in the Feature Manager

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Partie2_Enlevement de matière 2.png$

Then Validate
1. Mass properties
  
  $C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Partie 2_Masse.png$

Design - Summary table of results

Part	Specifications	Mass (g)
Part I-a	A = 81,00 ; B = 57,00 ; C = 43,00	939,54
Part I-b	A = 84,00 ; B = 59,00 ; C = 45,00	1032,32
Part II	A = 86,00 ; B = 58,00 ; C = 44,00 + Material removal	628,18
Part III	Pocket feature added	432,58

Assembly

Unit systems: MMGS (millimeter, gram, second);

Decimals: 2

Origin of the assembly: As shown in the picture

Let's build this assembly in SOLIDWORKS (Chain Link Assembly)

Preparing the workspace

Launch the software
Select the Assembly icon or from the main menu, click File > New > Assembly.
A new assembly environment opens, with a specific creation tree (FeatureManager)

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\demarrage.png$

Inserting a part

Click the Insert Components tool: a recent folder tab will open or in the PropertyManager click browse
Select part 1 titled “long_pin” then click on open
Use the axes (X, Y and Z) to orient the part to be inserted then validate

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Insertion de la piece 1.png$

Assembly of parts (definition of constraints)

Also insert part 3 titled “chain_link”
Click on the Constraint tool
Select the two faces to be constrained or linked
Click on coaxial

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\concentrique 1.png$

Click on Validate once
Select the faces again
Click on coincidence
Double-click on Validate

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\coincidence1.png$

Insert part 2 “Short_pin” again
Add the Coaxial constraint between the two holes
Add the Coincidence constraint between surfaces that must be in contact
Select the affected faces to specify a 25° angle constraint

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Angle de 25 re.png$

Insert part 3 titled “Chain_link”
Add the Coaxial constraint between the hole and the surface of revolution of part 3
Add the coincidence constraint to prevent translation of part 3

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Ajout piece 2.png$

Insert the second part 3 “Chain_link” again
Add the necessary constraints and specify the angle constraint as 125°
Insert part 2 titled “short_pin”
Add the necessary constraints

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Angle de 125.png$

Insert part 2 “Short_pin” again
Add the necessary constraints and specify the angle constraint as 130°
Insert part 2 titled “short_pin”
Add the necessary constraints

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\Angle de 130.png$

Insert part 1 titled “long_pin”
Add the necessary constraints for the assembly

$C:\Users\HP\Desktop\Tekbot T-Meca\Test 2\angle general.png$

Fixing the assembly relative to the reference mark

When the first part is inserted in the present way, it is necessary to constrain the axes with the Plan (front plane, right plane) of one of the parts of the assembly

Add a parallel constraint: Right-click on the front plane and click the constraint icon
Select the side face of the first part 3 insert
Click on Validate

Coordinates of the center of mass of the assembly for:

$C:\Users\HP\Desktop\Tekbot T-Meca\coordonnées du centre de masse.png$

A = 25 degrees; B = 125 degrees; C = 130 degrees

A = 30 degrees; B = 115 degrees; C = 135 degrees