Realizes significant cost reduction in detecting double sheet metal feeding.

Client’s Issues

The client has been engaging in 0.5mm-thick sheet metal working on automated laser welding lines and having problems in defective products caused by double-feed errors.

To prevent this, "Contact displacement sensor" was used for detecting the number of fed sheets, however the sensor and a display unit were expensive and this was a financial burden.

The client has found our products as a high-accuracy sensor at low cost.

Metrol’s suggestions

For a measurement in automated lines for detecting constant thickness, the numeral display (displacement measurement) is often unnecessary, and "Contact displacement sensor" with a display unit may be an over-engineered solution.

Although it is a contact-type mechanical switch, Metrol's "High-precision Positioning Swith" can achieve 0.5µm repeatability by our original switch structure.
Precision ON/OFF signal makes it possible to detect sheet metal double-feed error at a far lower cost compared than a contact displacement sensor.

Comment from Metrol representative

Is value indication really necessary for positioning in automated lines and in-lines?
As stated already, in many cases, a significant cost reduction has been achieved by replacing expensive "contact-type displacement sensor" with Metrol's "High-precision Positioning Switch".

If you are in trouble with the higher cost of "contact-type displacement sensor", please feel free to contct us.

For further information about the products used in this application