Method for monitoring and controlling a quality of spot welds
First Claim
1. A method for at least one of monitoring and controlling a quality of spot weldings of a processing island having at least two welding controls on at least one workpiece, the method comprising:
- measuring measured values one of during and after an execution of resistance spot weldings at different locations on the at least one workpiece, the measured values representing at least one of a voltage, a current, a resistance, a welding time, an energy, a force on welding contacts, and a power during a production of a resistance spot welding;
storing the measured values;
monitoring the measured values;
comparing the measured values with a reference measurement value, the reference measurement value representing at least one of a corresponding voltage, a current, a resistance, a welding time, an energy, a force on welding contacts, and a power during a production of a corresponding resistance spot welding; and
outputting a fault message when a predetermined number of successive measured values lie at least one of outside a predefined tolerance margin from the reference measurement value and outside a tolerance zone,wherein the at least two welding controls are each configured to carry out different welding processes on the at least one workpiece,wherein the comparing of the measured values and the outputting of the fault message are performed by a central control of the processing island,wherein the central control is in communication with each of the at least two welding controls to control the at least two welding controls in response to the measured values and the predefined tolerance margin,wherein the at least two welding controls are in communication with one another, andwherein each of the welding processes perform a different spot welds on the at least one workpiece.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosure concerns a method for monitoring and/or controlling a quality of spot weldings of a processing island, comprising at least two welding controls on one or more workpieces, wherein the method is based on a comparing of the measured values and an outputting of a fault message taking place from a central control of the processing island, the central control being in communicating connection with every welding control, in order to control them appropriately in dependence on all of the measured values and the predefined tolerance margin, the welding controls being in communicating connection with one another.
-
Citations
7 Claims
-
1. A method for at least one of monitoring and controlling a quality of spot weldings of a processing island having at least two welding controls on at least one workpiece, the method comprising:
-
measuring measured values one of during and after an execution of resistance spot weldings at different locations on the at least one workpiece, the measured values representing at least one of a voltage, a current, a resistance, a welding time, an energy, a force on welding contacts, and a power during a production of a resistance spot welding; storing the measured values; monitoring the measured values; comparing the measured values with a reference measurement value, the reference measurement value representing at least one of a corresponding voltage, a current, a resistance, a welding time, an energy, a force on welding contacts, and a power during a production of a corresponding resistance spot welding; and outputting a fault message when a predetermined number of successive measured values lie at least one of outside a predefined tolerance margin from the reference measurement value and outside a tolerance zone, wherein the at least two welding controls are each configured to carry out different welding processes on the at least one workpiece, wherein the comparing of the measured values and the outputting of the fault message are performed by a central control of the processing island, wherein the central control is in communication with each of the at least two welding controls to control the at least two welding controls in response to the measured values and the predefined tolerance margin, wherein the at least two welding controls are in communication with one another, and wherein each of the welding processes perform a different spot welds on the at least one workpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification