Verfahren und Vorrichtung zur Erkennung eines Wartungsindikators für ein Spannwerkzeug

Details

Veröffentlichungs-Nr.

EP4751850

Anmeldetag

1. Dezember 2025

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

Abstract

In an aspect, a method of a device (20, 35) is provided of detecting that a tightening tool (10) should be subjected to maintenance. The method comprises acquiring (S101) data indicating a tightening trace comprising torque and rotation angle values applied to a fastener being tightened during a tightening operation performed by the tightening tool (10), determining (S102) whether a selected section of the tightening trace is linear, and if so deriving (S103), from the linear section of the tightening trace, at least one value indicating the applied torque and acquiring a value indicating current consumed by the tool upon applying the torque, computing (S104) a ratio (k) between the at least one derived torque value and the value of the consumed current, comparing (S105) the computed ratio (k) with a correspondingly computed reference ratio (k_ref) of a previously performed tightening operation, and if the comparing of the ratios (k_ref - k) indicates that the consumed current is increasing above a preconfigured current threshold value (I1), determining that the tool (10) should be subjected to maintenance.

Anmelder

Firma

Atlas Copco Industrial Technique AB

Land

🇸🇪 Schweden