Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1990-11-14
1992-03-31
Jones, David
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 30, 72389, 72702, B21D 502
Patent
active
050996665
ABSTRACT:
A method and a device for indirect detecting of folding angles (.beta.) of a metal sheet (4) during the folding by a folding machine (1) which has a punch (2), and a die (3) provided with a depressed seat (5) is disclosed. The folding angle (.beta.) is obtained by alebraic summing of an angle (.alpha.) formed by adjacent two walls (10, 10, 13, 13, 13a, 13b) of the punch (2) or the seat (5) and each angle (.alpha.1, .alpha.2) between a portion (7, 8, 8a) of the metal sheet (4) and the said wall. The angles (.alpha.1, .alpha.2) formed between the said portion (7, 8, 8a) and each wall (10, 13, 13a, 13b) are calculated by using the measurements of the distances (D1, D2, D3, D4) from the wall to the portion measured at desired two points on the wall. The distances are detected by a device such as differential transformers (18, 19, 20) and pneumatic gauges (50, 51, 52, 53, 54, 55) incorporated in the punch (2) or the die (3). The angle (.beta., .beta.1, .beta.2) once achieve is calculated during the folding operation after elastic restoring of the metal sheet has been caused. If the angle calculated is less than the desired, a supplementary folding is carried out to achieve a precise folding angle. The whole folding is carried out by a single folding operation without requiring a second positioning of the metal sheet.
REFERENCES:
patent: 4550586 (1985-11-01), Aubert et al.
patent: 4564765 (1986-01-01), Blaich
patent: 4864509 (1989-09-01), Somerville et al.
patent: 4962654 (1990-10-01), Zbornik
Nicoletta Bruno
Sartorio Franco
Amada Company Limited
Jones David
LandOfFree
Method and device for detecting folding angles of a metal sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for detecting folding angles of a metal sheet , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for detecting folding angles of a metal sheet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2250560