Abstract
In-process Monitoring during Stamping of Thin Plate: Propagation Characteristics of Ultrasonic Waves in Cylindrical Stamping Dies
Highlights
The servo press has high potential for producing high-precision mechanical parts
The results of this finite-difference time-domain (FDTD) simulation enable the visualization of wave propagation, which could not be experimentally measured.[7,8,9,10] the actual products made by stamping have complicated shapes that consist of inclined or curved surfaces
It was found that the ultrasonic waves were reflected on the curved surface and were spread widely over the bottom surface of the die
Summary
It is widely known that during stamping small gaps exist between the dies and the workpieces. We examined the propagation of ultrasonic waves near the boundary surface by nominal analysis.[7,8] The sound fields in stamping dies were solved by the finite-difference time-domain (FDTD) method. The results of this FDTD simulation enable the visualization of wave propagation, which could not be experimentally measured.[7,8,9,10] the actual products made by stamping have complicated shapes that consist of inclined or curved surfaces. We investigate the reflection and transmission characteristics of ultrasonic waves at the contact surface between the workpiece and cylindrical stamping dies
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