scholarly journals Heavy-Weight Component First Placement Algorithm for Minimizing Assembly Time of Printed Circuit Board Component Placement Machine

2016 ◽  
Vol 21 (3) ◽  
pp. 57-64
Author(s):  
Sang-Un Lee
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Heavy Weight ◽  
Assembly Time ◽  
Component Placement ◽  
Printed Circuit ◽  
Placement Algorithm ◽  
Placement Machine

Optimization of Component Placement Scheduling for SMT Assemblies

2006 ◽  
Vol 505-507 ◽  
pp. 1123-1128
Author(s):  
Chung Hsien Kuo ◽  
M.D. Jeng ◽  
J.J. Wing ◽  
Tai Hong Wang
Keyword(s):  
Cycle Time ◽  
Heuristic Search ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Component Placement ◽  
Printed Circuit ◽  
Search Approach ◽  
Optical Positioning ◽  
Surface Mounting ◽  
Assembly Models

The surface mounting of electronic component is the major manufacturing technology for the electronic products in the last decade. The surface mounting technology (SMT) is an assembly process that assembles the surface mountable component (SMC) and the printed circuit board (PCB) together. The SMT mounter is an automatic assembly machine that processes the SMT assemblies in terms of the optical positioning and robotic handling. The SMT assembly consists of calibrating printed circuit board (PCB); vacuuming components form feeder stations; compensating the orientation of the vacuumed surface mountable component (SMC); and finally placing SMC chips on the PCB. In order to increase the throughput, the synchronous batch vacuuming of SMC components is designed. In addition, different types of component feeding and mixing in each batch increase the difficulties of finding the best component mounting sequence. In this paper, the optimal component placement scheduler is desired to perform higher assembly performance and to reduce the cycle time. The proposed optimal component placement scheduler is developed based on the rule based heuristic search approach. In addition, to evaluate the cycle time of each heuristic search, the route oriented Petri nets (ROPN) based SMT assembly models are constructed. The optimal component placement scheduler can be further determined in terms of evaluating the ROPN SMT assembly models. Finally, the practical test PCB board data is discussed in this paper.

Optimizing the Performance of Chip Shooter Machine Based on Ant Colony Algorithm

2012 ◽  
Vol 224 ◽  
pp. 47-50
Author(s):  
Xuan Du ◽  
Gang Yu
Keyword(s):  
Optimization Problem ◽  
Ant Colony Algorithm ◽  
Printed Circuit Board ◽  
Ant Colony ◽  
Circuit Board ◽  
Component Placement ◽  
Printed Circuit ◽  
Pcb Assembly ◽  
Communication Function ◽  
Feeder Arrangement

The component placement sequence and feeder arrangement are two critical factors determining the assembly time of chip-shooter machine (CS). In addition, the different size of component and different arrangement strategy affect the feeder arrangement and component placement sequence. Based on the engineering analysis, an integrated optimization model of printed circuit board (PCB) assembly for CS machine is established. According to the parallel placement character of CS machine, "Max-Min Ant Colony Algorithm with Communication function (MMAC)" is designed based on traditional Ant Colony Algorithm. The idea that two ants with different duties collaborate to solve the optimization problem is presented. Guide ants optimize placement sequence while executant ants optimize feeder arrangement according to the components placement sequence. The component placement sequence and feeder arrangement are optimized simultaneously

Integration and Application of Vision Systems in SMD Automatic Placement Machines

Circuit World ◽  
1990 ◽  
Vol 17 (1) ◽  
pp. 24-29 ◽  
Author(s):  
V. Neger ◽  
H. Pawlischek
Keyword(s):  
Printed Circuit Board ◽  
Mechanical Design ◽  
Circuit Board ◽  
Decisive Factor ◽  
Vision Systems ◽  
Printed Circuit ◽  
Automatic Placement ◽  
Placement Accuracy ◽  
Placement Machine ◽  
Placement Machines

The mechanical design of the automatic placement machine and the integrated application of different tools dictate the result of the placement process. The placement accuracy of the system is a decisive factor for the quality and cost of the printed circuit board. Vision systems have become indispensable in today's SMD placement technology.

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