Formwerkzeug und Verfahren zur Temperaturgesteuerten Formung eines Werkstücks

Details

Veröffentlichungs-Nr.

EP4122619

Aktenzeichen

EP21187386

Anmeldetag

23. Juli 2021

Veröffentlichung

7. August 2024

Erteilung

7. August 2024

Rechtsraum

EP

IPC

B21D37/16G01K7/00G01K1/14G01K7/02B21C51/00// B21D22/02B21D22/20B21D26/027B21D26/041B21J17/02

Abstract

The invention refers to a forming tool (10) for forming a workpiece (30) configured for serving as a measuring tool for determining the temperature of the workpiece being formed, by being used as a thermocouple. The workpiece is arranged between a first tool member (12a) and a second tool member (12b). A voltmeter (20) is connected between a first electrical contact (16a) of the first tool member (12a) and a second electrical contact (16b) of the second tool member (12b). A first electrical path (18a) defined in the first tool member (12a) between the workpiece (30) and the first electrical contact (16a) comprises at least a portion of a first electrically conductive material. A second electrical path (18b) defined in the second tool member (12b) between the workpiece (30) and the second electrical contact (16b) comprises at least a portion of a second electrically conductive material different from the first electrically conductive material. A voltage measured by the voltmeter (20) corresponds to a voltage thermoelectrically induced between the first tool member (12a) and the second tool member (12b) through the workpiece (30) due to the Seebeck effect and allows inferring the temperature of the workpiece (30). The invention further refers to a related method of measuring a temperature of a workpiece (30) being formed in a forming tool.

Anmelder

Firma

Technische Universität München

Land

🇩🇪 Deutschland

Fachgebiete