TP Front fork

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