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Simulation of an Assembly Line with Assembly Robots and Parts Supply Devices
#Verification of Transfer Speed #Assembly Process #Safety Stock Level #Equipment Time Chart #Standard Inventory
Model Overview
- Production Line Characteristics
- The assembly line consists of multiple assembly robots arranged in sequence.
- Parts are supplied to the assembly robots by automatic supply devices such as APC (Auto Pallet Changer).
- APC functions as buffer stock for the assembly robots.
- When the number of parts on the APC decreases to a certain level (standard inventory), a replenishment request is issued, and AGVs start replenishment.
- Key Points
The production line includes 12 assembly robots (12 assembly processes).
Two processes use APC.
To prevent stockouts at these two processes, AGVs must replenish parts at the right timing.
This simulation model was created to verify:
- What minimum AGV speed (Km/h) is required?
- How many AGVs are sufficient?
- What is the relationship between buffer size in front of assembly robots and the number of AGVs?
Modeling Screen
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Output Report Example
- Relationship Between AGV Speed and Production Volume
To prevent stockouts in the two component supply points for the assembly robot, we want to replenish parts using an AGV.
We will change the AGV’s travel speed to 0.7–1.1 m/s and verify the equipment status at the supply points.
At an AGV travel speed of 1.0 m/s, no stockouts occur and the equipment operates.
Applicable Industries/Line Configurations
- Home appliance and automotive parts manufacturing
- Assembly lines that automatically supply parts using devices such as Auto Pallet Changers and parts feeders