Goodbye to Trial and Error?


Reading time ( words)

All the time you spend at the production line for trial-and-error runs, just to get your production board right, takes away from your real production time. It comes on top of the time spent for trial and error at the screenprinter, and any other equipment in the line. All this can take an hour or more for each production board but, with all the tools now available, it can easily be significantly reduced. In addition, though, there are time-consuming actions (like loading all the feeders) to get right before the first error-free board comes out of the machine.

So, how do you minimize the whole trial-and-error process to ensure that, when a program starts up and feeders and toolbits are already on the system, the first board coming out of the machine is immediately good?

A perfect first board would mean that the correct components were all picked from the correct feeder and placed on the correct location at the correct placement angle. Guaranteeing this means ensuring that all the many pre-defined variables are correct: enough paste, exact board positioning, precise artwork, correct components picked by the correct toolbits and placed exactly. The more variables that are incorrect, the longer the ramp-up will take. The more programs each shift that require correcting, the shorter your effective production time and thus fewer boards produced. And during ramp-up, it’s better that the system stops to signal a fault than finding it out at the end during board test. It also helps save ramp-up time if all components are actually picked to get the program started immediately without false starts.

Read the full column here.


Editor's Note: This column originally appeared in the January 2014 issue of SMT Magazine.

Share

Print


Suggested Items

Oren Manor on the Siemens-Mentor Integration

11/26/2019 | Real Time with...productronica
In this video interview, part of the productronica coverage, the I-Connect007 team speaks with Oren Manor, director of business development for Siemens, in the Siemens booth. Oren introduces us to the in-booth production equipment that integrates factory automation, motion controls, and MES solutions. He points out that the recent effort to automate SMT lines is now expanding into the areas of final assembly, box build, and manual assembly as well.

Automated Conformal Coating of CCAs Using Polyurethane

08/30/2019 | Marissa Pati and Ana “Lety” Campuzano-Contreras, BAE Systems
The development of an automated circuit card assembly (CCA) conformal coating process using a low-outgassing polyurethane material was essential for meeting the increase in customer demand from 3,000 to 60,000 units per year.

How Do I Get Smart With IPC CFX? (Part 2)

07/31/2019 | Michael Ford, Aegis Software Corp.
The introduction of the CFX standard is the critical trigger that enables smart, flexible factory operation in line with business needs. The technology is simple to adopt, which creates a true “plug-and-play” environment on which advanced production AI software technologies can be developed.



Copyright © 2019 I-Connect007. All rights reserved.