Week 1:- Introduction to BiW and Fixtures Challenge
1. BIW ( Body in white ) It is a stage where the Car body sheet metal components are assembled by welding and other Joint process.
Parts of BIW is
* Body side
1. Body side outer.
2. Body side inner.
* Under body side
1. Front end under frame.
2. Main floor
3. Rear end under frame
* Closures.
1. Front door
2. Rear door
3. Hood
4. Deck lid
* Roof
1. Roof inner
2. Roof Outer
* Fender
2. Nomenclature of BIW
Biw nomenclature is where each part of the car body is reprenented in alphabets and Each alphabet has there own part name in both UK description and US description.
3. Fixtures :- it is a device which hold the workpiece to be processed ( Weld, revets etc.) by using 3-2-1 principle.
Types of fixtures.
* Production fixtures.
* Pre production operation fixtures.
* Checking Fixtures.
4. The Basic principal of Fixtures design.
All 12 Degree freedom must be restricted.
6 Translational degree
6 Rotational degree
5 . BIW stations.
* Tools * Grippers * Stands * Miscellanious
1 Geo tool 1 Material handling gripper 1 Pedestal stand 1 Curring, Buffer stand, Pack, pallets, Take out trolley, Conveyors.
2 Respot Tool 2 Process gripper 2 Gluing stand
3 Marriage tool 3 Combo gripper 3 Docking stand
6. Basic Terminologies are.
* NC/Mylars/Fingers
* PLP
* Blade
* Risers
* Shims
* Rough Locators
* Hardwares
* CMM
* Units
* Number plate
* Co- ordinate plate
* Name plate
* Clamp plate
* Pivot
* Class A srface / Skin surface
* Reed switches
* Sensors