The effects of punch angle in noise and force formation for sheet metal blanking process

Abstract

The paper is concerned with the effect of punch angle (0°, 4°, 8°, 16°), sheet thickness (0.8, 2 mm), and punch speed (25, 37.5 mm / min) on the force formation and noise in the blanking of DP600 dual-phase steel sheet. The blanking experiments were carried out in a modular blanking die. The blanking force and noise variables were obtained simultaneously during the blanking using a load cell and noise measuring device, respectively. It was determined that the blanking force significantly decreased with an increasing punch angle, while noise formation decreased. The increase in the punch speed slightly increased the amount of noise while it did not affect the blanking force significantly.

An Investigation of Punch Radius and Clearance Effects on the Sheet Metal Blanking Process

“…It can affect the blanking force on many parameters such as clearance, punch type, surface roughness, sheet material type. [6,13,14]. According to the blanking force results given in Figure 7, it is seen that the blanking force tends to decrease somewhat depending on the increase in the clearance value in all blanking operations with punches.…”

“…The factors such as punch speed, punch type, punch tip radius, and clearance can directly affect the product quality and blanking process. [6,7].…”