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1. WO1990013373 - SMART STRAIGHTENING PRESS

Publication Number WO/1990/013373
Publication Date 15.11.1990
International Application No. PCT/US1990/000594
International Filing Date 30.01.1990
Chapter 2 Demand Filed 04.10.1990
IPC
B21D 3/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
3Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
10between rams and anvils or abutments
CPC
B21D 3/10
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
3Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
10between rams and anvils or abutments
Y10S 72/702
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
72Metal deforming
702Overbending to compensate for springback
Applicants
  • DAYTON ROGERS MANUFACTURING COMPANY [US]/[US]
Inventors
  • PETERSEN, Paul, S.
  • HED, Virgil, C.
Agents
  • SIVERTSON, Wayne, A.
Priority Data
345,00928.04.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SMART STRAIGHTENING PRESS
(FR) PRESSE A DRESSER INTELLIGENTE
Abstract
(EN)
A straightening press of the type wherein a workpiece (15) is supported for deflection in a given direction by an anvil (16) engageable with the workpiece (15). A reference spring (23) is supported for deflection with the reference spring supports (22, 22') being serially interconnected with the anvil (16). In a preferred embodiment, a floating bridge (21) carries the anvil (16) and reference spring supports (22, 22'). Deflecting force applied to the reference spring (23), as by a ram (25), is transmitted to the workpiece (15) via the floating bridge (21). A change in the differential displacement of the ram (25) and floating bridge (21) is detected to determine the onset of plastic deformation of the workpiece (15).
(FR)
Dans une presse à dresser du type où une pièce à usiner (15) est soutenue afin d'être fléchie dans une direction donnée sur une enclume (16) susceptible d'enclencher la pièce à usiner (15), un ressort de reférence (23) est soutenu afin d'être fléchi par des supports (22, 22') interconnectés en série à l'enclume (16). Dans un mode préférentiel de réalisation, un pont flottant (21) porte l'enclume (16) et les supports (22, 22') du ressort de référence. Une force de flexion appliquée au ressort de reférence (23), par exemple par un coulisseau (25), est transmise à la pièce à usiner (15) à travers le pont flottant (21). Un changement du déplacement différentiel du coulisseau (25) et du pont flottant (21) est détecté afin de déterminer le début de la déformation plastique de la pièce à usiner (15).
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