Week 1:- Introduction to BiW and Fixtures Challenge
question 1. What is BIW & define its parts
Body in white is state in the automobile manufacturing in which a car body component have been joined togather , using one and more techniqes (spot , mig , mag) , riveting clinching.
BIW is normaly categroized as
1. body side
2. under body
3. clouser roofs
4. fender
5. reinforcements
Body side
1.body side outer
2. body side inner
both sides of the . its mount all the pillars a,b,c .
UNDEBODY
1. front end under frame
2. main floor
3. rear end frame
CLOUSER components
1.front door
2. Rear Door
3. trunk lid
Roof consits of
1. Roof inner
2. Roof outer
FENDER
The component seat between side body and front end frame
Question 2 What do you understand by BIW nomenclature
it is basically naming all part of body. these name can be said as subpart of already catorized part above.
They can be differ from one contries to another
Question 3 What is fixture and its type
Fixture is holding device which hold the work pieced to be processed. In general fixture are designed using 3 2 1 principal. Fixture hold the workpiece without causing vibration and distortion.
Types of fixture
1. Production fixture
These fixture are used for mass production. since the fixture for mass production they should be simple , rigid and hard. they should maintained regularly on interval for avoid error.
2. Pre Production operation fixture
These fixture are for used for new devlepment parts and products.These can be refered ad prototype fixture.
3. Checking fixture
These fixture are used for checking and inspection purpose. no processing is done in these fixture.
Question 4 What is the basic principal of fixture design
a) The fixture is designed based on how the workpiece is fixed on fixture
b) The 3 2 1 Principled is used
* Transistional x,-x,y,-y,z,-z
*Rotaional ( clock and anticlock Wise X Y Z)
Question 5. Elaborate types of BIW staion
BIW Station is part of biw assembly line. BIW assembly line divided in zones
The BIW station are divided into following
1. Tool station
2. Gripper station
3. Stand station
4. Miscellaneous station
TOOLS STATION
a) Geo fixture = A GEO tools is a fixture in which geometry of the pannel which are welded togather is defined accurately
b) RE - SPOT FIXTURE
It is a fixture in which the remainig weild spots which are not achieved in geo tools are welded
c) Marriage and hemming fixture
In this fixture inner pannel and outer pannel assembly joined togather
d) checking fixture
In this fixture we check assembly and part tolerance and dimmenssion etc
Gripper station
A gripper is a device that enable the holding of a object to be manipulated . easier way to describe gripper as think of a human hand
a) material handling gripper
material hendling gripper are use to handle car from one station to another station
b) process gripper
these are also use to handle car pannel to one station to another station and these gripper also have gluing reiviting and sealing etc.
c) combo griper
they are multi tasking gripper combination of gripper + weild gun
d) dual gripper
they handle material and they are two sided
Stand station
they are used to hold the part which are going to be mount
Diffrent type of stand used
a) pedestral stand
wield gun is mounted on the fixed stand which are mounted on the floor permanently
b) gluing stand
gluing gun is fixed on stand for glue the parts
c) docking stand
in this stand we put some eqvipment yhat are not use now
d) date stamp
we use it put date on parts
Question 6. What are basic termologies used in BIW fixture
a) nc/myler/fingers
they hold the pannel while these are placed from topside and from bottom side
b) principal locating point
they use to locate the workpiece
c) blade
d)rough locators
this work as guide for part to be put on right orientation
e)hardware
hardware are the bolts ,self locking nuts
f)CMM
cordinate measuring machine use to measure the geometry of the physical objectby sensing the point
g)units
j)number plates
k)co ordinate plates
l) name plate
m) clamp arm
n) pivot
o) class a surface
p) reed switch