Week 3:- BiW Fixture Design Methodologies Challenges
Que 1- What is the design methodology ?
Ans - Design methodology is the steps followed during the design of fixture
It contains basically four steps
1- Purchase order
2-Inputs from customer
3-Percentage completion criteria
4-Design input
In this evry steps there more substeps are also there .Each stage is having the different different steps .
Que 2- What are the inputs required from customer to start the design of fixture?
Ans- The main thing we required before starting the fixture is that purchase order .
Based on that there are more things also that we have to consider before starting the fixture
1-Functional requirement
2-Preferred standard components
3-Car products
4- Layout
5-Ergo Data
6- Weld study
7- Standard detailed templates
Thease are the things also we required before startin the design of fixtures .
Que 3- What is the input we get from car products?
Ans- Below are the some inputs
1-GD & T
2-Part List
3-Cad files of car part
4-Clamp Plan
5-Product Assymbly Process sheet
Que 4-What is the clamp plan ?
Ans- Clamp plan is the plan that has already connected with the coordinates which was given .If we can put the coordinates
directly then we will be on that location and we have to design the clamp for that particular location
We have to always put the clamp on that particular location because of that there should not be any diificulty to do the
welding and the movement of the tool position .
Que 5- What is the purpose of layout?
Ans- Basically layout is giving the information about where we have to put the fixtures , where we have to place the robot
Layout is giving the informtion about
1- Flow of the parts
2-Station of pitch
3-Robot station
4-Accessories like tool changer and tip dresser
5-Sub assembly links
6-Platform Height
7-Loading/ Unloading squence height
Que 6- What is Ergo Data?
Ans- Ergonomicas is basically related to the human behaviour .
Ergo data is help to decide the height of the fixture for loading the part because operator should not be bend while doing the operations .
It will help to considering the working safety zone of the operator .Ergo data will help the operator to make him comfortable while operating & loading the part
Ergonomic is very important factor to increase the efficiency of that operator & it will help to increase the output .
Que 7- What do you understand by weld study?
Ans- In weld study we are studying the weld guns .
It includes -
1-Weld gun Details
2-Weld matrix & weld points: Weld points means at which points weld is to be happen .
There are two types of weld points-
1-Geo weld points
2- Respot weld points .
Que 8-What are the criteria for percentage completion in designing stage ? explain detais .
Ans- Percentage competion criteria is followed in the designing stages & dispatch stages of the welding fixtures .
1- 0-25%- Input and concept design
2-25-40%-Concept approval & simulation check
3-40-85%- Design freezing & Detailing
4-85-100% Check and final Dispatch .
Que 9- Brief about the output in design .
Ans- In the design output we are giving the 3D model and the 2D drawing of the fixture
In this we are providing the some different different types of documents also which is called unitized tools & non unitized tools
In unitized tools there are multiple units on common base
In non unitized tools in this tool that can be alone and can be detailed completely on a layout sheet .
Que 10 - What do you understand by structuring a design tree ? How does it reduce errors during the design process?
Ans- Structuring of the design tree is the very important factor while designing the any fixture
It implies to the process where all the assemblies and parts are named in a specific standards .Different customers are having the different set of standards.
It is very important process that can be help us to easy identify a specific part or assembly .
It helps to avoide the errors during design study , manufacturing,assembly, etc.
If it is not construct properly then it will create error .
It can help us to identify the qty of items of same type or different types that are being used in an assembly .
Que 11- What are units ? mention 5 types of units .
Ans - Units are the name which has given in the project name .
The names are -
Simple units -
1- Rest unit
2-Fixed pin unit
3-Retract Pin unit
4-Rough locator unit
5-Sensor Unit
Que 12- Describe fixed pin units & there Purpose
Ans - Fixed pin unit is the unit which is used to locate the car panel using the pin
Fixed pin unit is used to locate the parts.
Que 13- What are the different parts of the pin units-
Ans- Block ,Riser, Pin , Shim ,Stand