US 12,138,676 B2
System for a sheet metalworking and a process thereof
Nallagundla Venkata Reddy, Hyderabad (IN); Adabala Subrahmanyam, Hyderabad (IN); Gangavenkataiah Ramu, Hyderabad (IN); Rahul Kumar Verma, Jamshedpur (IN); Dasu Venkat Raju, Jamshedpur (IN); and Suman Guha, Jamshedpur (IN)
Assigned to INDIAN INSTITUTE OF TECHNOLOGY HYDERABAD (IITH), Kandi (IN); and TATA STEEL LIMITED, Jamshedpur (IN)
Appl. No. 17/434,688
Filed by INDIAN INSTITUTE OF TECHNOLOGY HYDERABAD (IITH), Sangareddy (IN); and TATA STEEL LIMITED, Jharkhand (IN)
PCT Filed Feb. 28, 2020, PCT No. PCT/IB2020/051713
§ 371(c)(1), (2) Date Aug. 27, 2021,
PCT Pub. No. WO2020/174450, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 201941008005 (IN), filed on Feb. 28, 2019.
Prior Publication US 2023/0067089 A1, Mar. 2, 2023
Int. Cl. B21D 5/00 (2006.01); B21D 5/02 (2006.01); B21D 22/02 (2006.01)
CPC B21D 5/008 (2013.01) [B21D 5/0209 (2013.01); B21D 5/0281 (2013.01); B21D 22/022 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A system (100) for sheet metalworking, the system (100) comprising:
a punch (1) connectable to a press (P), wherein the punch (1) is configured with a first electrical terminal (2);
a die (3) configured with a die surface (DS), to support sheet metal (SM); and
a support member (4) movably disposed in the die (3), and configured with a base end and a tip end, the tip end proximal to the punch and defining a groove, the support member (4) is provided with a second electrical terminal (5) in the groove; and
an insulation strip (9) provided between the support member (4) and the second electrical terminal (5);
wherein, the support member (4) and the punch (1) contact a working portion (B) of the sheet metal (SM) at an axis (A-A) to supply electric current in pulses to a localized region (LR) of the working portion (B) for sheet metalworking,
wherein the localized region (LR) is defined by a contact portion of a tip end (TE) of the punch (1) and a tip end (TE) of the support member (4) on either sides of the sheet metal (SM),
wherein the electric current passes in the form of pulses from the tip end (TE) of the punch and the tip end (TE) of the support member (4) to the localized region (LR) of the working portion (B) on either sides of the sheet metal (SM).