GUIDE · PRODUCTION EFFICIENCY / 01
Changeover time is not one operation but a stack of small steps. Here we separate those steps, identify which one actually consumes the time and show where a visible reference helps.
Efficiency opportunity
Ask a line supervisor how long a product change takes and you usually get a single figure. That figure is the sum of five very different jobs:
Three of those five steps — transferring the measurement, finding the setup point and verification — are an information problem, not a mechanical one. A visible reference affects those three directly.
Instead of timing the changeover as a whole, put a stopwatch on each of the five steps separately. On most lines the surprise shows up on the first attempt — and it is usually not where you expected.
When the setup does not hold first time, the steps run again from the top. The second round repeats almost all of the first; by the third the operator’s morale is part of the cost.
The number of repeats is rarely recorded. Yet if one product change in three goes to a second round, the real setup time is significantly above what the records show.
Projecting the laser reference lines onto the working surface shortens three of the steps:
| Step | Without a reference | With a visible reference |
|---|---|---|
| Transferring the measurement | Tape or template, dependent on the operator | The recipe is entered at the panel and the line moves to position |
| Finding the setup point | Marking and searching | The point is already visible |
| Verification | Measuring again | Visual comparison |
| Physical adjustment | Unchanged — this step is mechanical | |
The gain in setup time is multiplied by the changeover frequency. On a line that changes product once a week, five minutes goes unnoticed. On a line that changes three times a shift, those same five minutes add up to several hours a month.
That is why the first question to ask is not “how long does setup take” but “how many times a day do we set up” .
Keep three numbers for one week: product changes per day · time spent on each change · the number of times the setup did not hold first time. Those three numbers are enough to show whether an alignment investment pays for you.
We show how to put numbers on that assessment in How Do You Measure the Value of an Alignment Investment? .
Share your alignment requirements and we will assess the laser layout, the motion architecture and the automation interfaces for your application together.
GET IN TOUCHFor short definitions of the terms used in this article, see the alignment glossary .
We share technical articles, application examples and product updates by email as they are published, to make system selection and investment decisions easier.
Sign up for the e-newsletter
Your email address is processed only to send the newsletter, and you can unsubscribe at any time. For details, see our privacy notice.