公开(公告)号：US5148693A

公开(公告)日：1992-09-22

申请号：US783918

申请日：1991-10-29

Applicant: Franco Sartorio ,  Bruno Nicoletta

Inventor： Franco Sartorio ,  Bruno Nicoletta

IPC: B21D5/02

CPC classification number: B21D5/0209 ,  B21D5/006 ,  G01B13/18 ,  Y10S72/702

Abstract: A method 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 algebraic 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 achieved 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.

Abstract translation: 一种在具有冲头（2）的折叠机（1）和设置有凹陷座（5）的模具（3）折叠期间间接检测金属片（4）的折角（β）的方法， 被披露。 折叠角（β）通过由冲头（2）或座（5）的相邻两个壁（10,10,13,13,13a，13b）形成的角度（α）的代数求和获得，并且每个角度 （4）的部分（7,8,8a）和所述壁之间的角（α1，α2）。 通过使用距离（D1，D2，D3，D4）的测量来计算在所述部分（7,8,8a）和每个壁（10,13,13a，13b）之间形成的角度（α1，α2） ）从墙壁到在墙壁上所需的两点测量的部分。 距离由诸如差分变压器（18,19,20）和并入冲头（2）或模具（3）中的气动计（50,51,52,53,54,55）之类的装置检测。 在金属板的弹性复原之后，在折叠操作期间计算一次实现的角度（β，β1，β2）。 如果计算出的角度小于期望值，则执行补充折叠以实现精确的折叠角度。 整个折叠通过单个折叠操作进行，而不需要金属片的第二定位。

公开(公告)号：US5099666A

公开(公告)日：1992-03-31

申请号：US612574

申请日：1990-11-14

Applicant: Franco Sartorio ,  Bruno Nicoletta

Inventor： Franco Sartorio ,  Bruno Nicoletta

IPC: B21D5/02

CPC classification number: B21D5/0209 ,  Y10S72/702

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.

Abstract translation: 一种在具有冲头（2）的折叠机（1）折叠期间间接地检测金属片（4）的折叠角（β）的装置，以及设置有凹座的模具（3） （5）。 折叠角（β）通过由冲头（2）或座（5）的相邻的两个壁（10,10,13,13,13a，13b）形成的角度（α）和每个角度 （4）的部分（7,8,8a）和所述壁之间的角（α1，α2）。 通过使用距离（D1，D2，D3，D4）的测量来计算在所述部分（7,8,8a）和每个壁（10,13,13a，13b）之间形成的角度（α1，α2） ）从墙壁到在墙壁上所需的两点测量的部分。 距离由诸如差分变压器（18,19,20）和并入冲头（2）或模具（3）中的气动计（50,51,52,53,54,55）之类的装置检测。 在金属板的弹性复原后的折叠操作期间，计算一次实现的角度（β，β1，β2）。 如果计算出的角度小于期望值，则执行补充折叠以实现精确的折叠角度。 整个折叠通过单个折叠操作进行，而不需要金属片的第二定位。