Advances in AOI technology make machines more cost effective
Choosing an optical inspection machine for PCB board inspection is a daunting task. There are many vendors in the marketplace that claim to perform the same or similar tasks such as solder joint inspection or post-place inspection. However, the machines in the marketplace are constructed of different hardware and software components such as cameras, lighting, algorithms, and programming paradigms. To make matters more confusing these systems are offered all at a variety of prices. Many PCB manufacturers face significant cost pressures. As a result of these pressures and a difficulty discerning between offerings, the manufacturers may choose to pick the lowest priced offering for such machines. The standard way to measure the cost of the machine is the base price for the system. However, manufacturers using such machines in the long-term have found there are hidden-costs to some of these systems which include programming time, program maintenance, and program transportability, which must be added to the base price. Recent advances in technology have significantly reduced the hidden cost of these programming issues by allowing machines to automatically tolerate variations. Additional advances have allowed these machines to be more reliable and provide variable (measurement) data as well as attribute (defect) data that is accurate and repeatable. This data can be fed back into the process to tune production lines and head off defects before they occur, thereby reducing rework and scrap and ultimately reducing costs. In this paper, we will survey some of the technological advances that have led to these two significant cost saving features in order to allow manufactures to make the best cost decision when purchasing an AOI machine.
Pamela Lipson An-Jim Long
Imagen Incorporated 955 Massachusetts Avenue ＃351 Cambridge,MA USA Landrex Technologies Co.Ltd.No.232,Yongchang St.Yingge Town,Taipei County 239 Taiwan
国际会议
上海
英文
2008-03-17（万方平台首次上网日期，不代表论文的发表时间）