Logistic and control aspects for flexible and reactive micro and desktop assembly at the factory level

Abstract

In addition to micro assembly and micro manufacturing micro factories are currently widely studied around the world. However, the research is typically focusing on single machines and not so much on integration of single processes and machines into wider process chains and larger systems with integrated material logistics. This paper discusses issues related to realization of a larger scale integrated micro factory for assembly of multi-part products. Special attention is paid on the logistical aspects and control concepts supporting flexibility and dynamic reconfigurability of the system. A scenario of a microfactory system as a holonic manufacturing system enabling reactivity of the system to sudden changes and failure situations is also presented.

Electromagnetic modular Smart Surface architecture and control in a microfactory context

“…However, in case of machine breakdown or full capacity, the entire production process is blocked. Therefore, in this type of modular microfactory, flexible and efficient production can by realized with ''bypassing'' conveyor that can be added to allow the carriers/pallets alternative routes [26]. Besides, in case of reconfiguration of the layout for a new process or a new product, manual intervention is required to adapt the layout, taking into account the predefined shape and orientation of each elementary transfer unit (in line, with corner, etc.…”

Architectures and Interfaces for a Micro Factory Concept

“…Drawbacks are the product specific caves or other mountings made to pallet and returning of the pallets back to the beginning of the system. The carrier based system within the TUT-µF concept is discussed in [3].…”

“…Ref. [3] discusses the possible control approach followed by the concept. One instance of the cell internal control and communication architecture is opened in [6].…”

“…Ref. [3] discusses some feeding methods utilised in TUT-µF like tray and flexible feeding. The interface specification for the feeding is not yet stabilised and found its latest form within our concept for single feeders.…”

“…Since then the concept has gone through several evolutions and grown more mature as a concept. [1,2] The different mini and micro factory concepts have been presented since early 90s [3]. However, the research is typically focusing on single machines and not that much on integration of stand-alone processes and machines into larger manufacturing entities like production lines with integrated material logistics.…”