Abstract: A temperature sensing device for a hot stamping die apparatus includes: a processor, wherein when a second die moves toward a first die to press a workpiece, a pushing signal is transmitted to the processor; at least one temperature sensing unit is disposed in the first die and includes: a moving rod, a buffer, and a temperature sensor; a displacement regulator; and a controller, whereby when the processor receives the pushing signal, the processor controls the displacement regulator through the controller, so that the moving rod drives the buffer and the temperature sensor to move a predetermined distance, and further the temperature sensor moves toward the workpiece to touch the workpiece and sense a temperature of the workpiece.

Abstract: A temperature sensing device for a hot stamping die apparatus includes: a processor, wherein when a second die moves toward a first die to press a workpiece, a pushing signal is transmitted to the processor; at least one temperature sensing unit is disposed in the first die and includes: a moving rod, a buffer, and a temperature sensor; a displacement regulator; and a controller, whereby when the processor receives the pushing signal, the processor controls the displacement regulator through the controller, so that the moving rod drives the buffer and the temperature sensor to move a predetermined distance, and further the temperature sensor moves toward the workpiece to touch the workpiece and sense a temperature of the workpiece.

Abstract: A method for manufacturing a rim is provided to overcome the problem that the strength of the rim as manufactured by the conventional manufacturing method reduces due to the annealing of the welding operation. The method includes processing a first material with a cold stamping process to form a disc embryo, with the first material being made of steel; processing a second material with a cold rolling process to form a rim embryo, with the second material being made of steel; coupling the disc embryo and the rim embryo with each other by a welding approach to form a semi-processed rim; and processing the semi-processed rim with a hot stamping process to form the rim.