Lycée Ed Branly Boulogne sur mer 2nd ISI 2003-2004

TP1 Seq 3

Seconde I.S.I section européenne Les solutions technologiques associées aux fonctions

Compétences attendues ¾ Effectuer le démontage et le remontage d’un ensemble de pièces réalisant un assemblage ou un guidage. ¾ Identifier sur un matériel réel ou sur sa représentation virtuelle, la liaison réalisée par un assemblage ou un guidage. ¾ Pour un assemblage ou un guidage, identifier et décrire les surfaces contribuant à sa réalisation

PROGRAMME 2.1.4

Transmettre et/ou transformer l’énergie mécanique Assemblages et guidages entre pièces :

-

. degrés de liberté d’une liaison entre pièces . exemples de solutions constructives : assemblages permanents, guidages en rotation et en translation.

Conditions de réalisation Présence de la trottinette en partie démontée ( vis et écrous débloqués ) Dossier ressource Assemblage et Eclaté sous SolidWorks Répertoires avec les pièces nécessaires à l’assemblage

Connaissances acquises

First name : Surname : D:\ISI 2003\Seq3\g Seq3-tp1 DAO SW assemblage.doc

Date: / Class:

/

1/5

Seconde I.S.I D.A.O SolidWorks (modélisation et mise en plan)

TP1 Seq3

2/5

Study of the removal and refitting for the front wheel (see page 3/3)

)

Disassemble the front wheel of the scooter Identify the different parts, colour and put a name on them according to the following list.

)

Unscrew and remove the axle and the screw Take out the bearings, and the spacer.

)

Axle Bearing Front fork Screw Spacer Wheel

Complete the following mounting graph

1

2

Axe Entretoise Fourche avant Roue Roulement Vis

3

4

5

6

Front fork

)

Which of the kinematic links has been made ?

)

What is the purpose of the spacer ? To keep the grease for the lubrication To make the axle stronger To maintain a gap between the two bearings To increase the speed of the scooter

ˆ ˆ ˆ ˆ

When you finish the session refit the front wheel and tighten gently ( just with your fingers)

TP1 Seq3

Seconde I.S.I D.A.O SolidWorks (modélisation et mise en plan)

A-A

Assembly drawing With a half view and a section

3/5

A

For more details see “Manual of engineering drawing”

A Front wheel

TP1 Seq3

Seconde I.S.I D.A.O SolidWorks (modélisation et mise en plan)

4/5

SolidWorks Open in the directory Ress-512 sur Serveur2000 R:\ ISI \ Wheel assembly \ front wheel.sldprt

Complete the model of the front wheel

)

On plan 3 create a new sketch as shown below Fig.1

Point

Third step : Insert a fillet

Second step : Create a 3 Pt arc

First step : Create a symmetrical centre line

Fourth step : Insert a centre line

Convert Entities

Fig.1

)

After deleting the symmetrical centre line, apply on the sketch the Revolved Boss feature

Create the housing shoulders for the two ball bearings

)

measure on the real part : the dimension values of a housing shoulder and put them on the section B-B Fig.2

B

inside Ø outside Ø Depth

)

Save the part in your directory

Fig.2 B

- B

B

TP1 Seq3

Seconde I.S.I D.A.O SolidWorks (modélisation et mise en plan)

5/5

Assembly of the front wheel Choose the ball bearing

)

Before visiting the following site:

http://www.consbrgs.com/cbc_search.taf Complete the dimensions needed in the dialogue box Fig.4. Submit your need, and choose the right ball bearing in the list as shown in Fig.3 Fig.3

Fig.4

Creating the Assembly of the front wheel

) )

Open a new assembly and insert the different components you need.

Mate the components (see “Assembly mates” in Getting started manual)

)

Create the drawing in a exploded isometric view and add the list of the components in the title

1 Ind ex

Qty

Format: A4 Scale: Design by

Name

Material

Observation

Lycée Ed. Branly Boulogne sur mer

ISISeconde 2002/2003

10/11/00