Basic 1: Toy Car Assembly Line

Welcome to our first tutorial! We'll create a simple assembly line for toy cars. This will show you how different OMM components work together to create a basic manufacturing process.

What We're Building

Think of this as a small workshop where we:

• Assemble toy cars from parts
• Get them ready for shipping

The Components We'll Use

Our toy car assembly line needs:

• WorkStations where we'll assemble the cars
• Parts like car bodies and wheels
• Actions that define each step in the process
• A Job to coordinate everything

Setting Up Our Assembly Line

Our assembly line only consists of one station. Let's start by creating a work area:

main_assembly = WorkStation(
    name="Main Assembly Station",
    georeference=[1.0, 1.0], # A reference to where the WorkStation is in our model/simulation/factory
    workstation_type="assembly",
    capabilities=["car_assembly"],
    max_capacity=2 # Two toy cars can be assembled in parallel 
)

tip

Think of WorkStations as dedicated areas where specific tasks happen. Each station has its own purpose and capabilities.

The Parts We Need

Every toy car needs two types of parts:

car_parts = [
    Part(
        name="Car Body",
        quantity=50, # We now have 50 car bodies availabe
        volume=0.001,
        state=ProductionState.NEW,
        part_type=PartType.PURCHASED_COMPONENT,
        cost=2.00,
        min_stock_level=20
    ),
    Part(
        name="Wheels",
        quantity=200,  # We need 4 per car
        volume=0.0002,
        state=ProductionState.NEW,
        part_type=PartType.PURCHASED_COMPONENT,
        cost=0.50,
        min_stock_level=80
    )
]

Creating the Assembly Steps

Now let's define what needs to happen:

assembly_action = Action(
    name="Assemble Car Body",
    action_type=ActionType.ASSEMBLY,
    description="Attach wheels to car body",
    duration=0.25,  # 15 minutes
    sequence_nr=1,
    location=main_assembly
)

# Tell the action what parts it needs
assembly_action.add_requirement("Part", ["Car Body", 1])
assembly_action.add_requirement("Part", ["Wheels", 4])

tip

Actions are like detailed instructions for each step in the manufacturing process. They specify what needs to happen, where it happens, and what materials are needed.

Putting It All Together

Finally, we create our product and set up a job to make it:

toy_car = Product(
    name="Red Bull Racing Car",
    volume=0.002,
    production_state=ProductionState.NEW,
    due_date=datetime.now() + timedelta(hours=1)
)

# Add the required Parts to the Product
toy_car.add_part(car_parts[0], quantity=1)
toy_car.add_part(car_parts[1], quantiy=4)

# Create the Job
car_job = Job(
    products=[toy_car],
    priority=JobPriority.MEDIUM
)

# Add the required Action to the Job
car_job.add_action(assembly_action)

What's Next?

Now that you've completed this basic tutorial, you understand how to:

• Create a WorkStation with specific capabilities and capacity for your manufacturing process
• Define Parts with properties like quantity, cost, and minimum stock levels
• Set up Actions that specify assembly steps, including their duration and resource requirements
• Build a complete Job by combining Products, Parts, and Actions into a working assembly line

This foundation will help you explore more advanced concepts like:

• Adding multiple WorkStations to create complex assembly lines
• Implementing quality control checks between production steps
• Managing part inventory and automated reordering
• Creating parallel assembly processes for increased efficiency

Try modifying this example by:

• Adding a second WorkStation for painting the toy cars

tip

Remember that every manufacturing process starts with these basic building blocks. As you get comfortable with them, you can create increasingly sophisticated production lines.