Amada Co.

Isehara, Japan

Amada Co.

Isehara, Japan

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A method for bending a flat workpiece is provided. The method may include applying heat or pressure to the workpiece at a range within a first width from an edge with a residual stress formed by cutting so as to reduce the residual stress, and bending the workpiece along a bending line after applying the heat or pressure.


Patent
Amada Company | Date: 2015-09-02

A sheet material bending system includes a tool changing apparatus that changes tools between a press brake and a tool stocker. The tool stocker (77) is arranged behind the press brake (75). To change tools from the front and rear of the tool stocker (77), the front and rear of the tool stocker (77) are opened. The tool changing apparatus (79) has a pivot (137) that is movable in front-rear, left-right, and up-down directions and is rotatable around an axis extending in the up-down direction. A front end of the pivot (137) is provided with tool holding units (133P, 133D) to hold tools.


A machine tool for bending a workpiece by clamping the workpiece with a die and a punch is configured to: distinguish a material characteristic of the workpiece as an actual value and a nominal value; determine an actual material characteristic during an machining operation and re-calculate an operation target value suitable for the workpiece; and bend the workpiece by operating the punch in accordance with the suitable operation target value thus re-calculated.


Patent
Amada Company | Date: 2015-06-24

A rotatable buffer turret apparatus (1) on which plural pairs of punches and dies to be set on a turret (3T) of a turret punch press (3) are set, includes an upper buffer turret (13) on which punch attachment holes (11) in which the punches can be set are arranged circularly, and a lower buffer turret (17) on which die attachment holes that is associated with the punch attachment holes (15) and in which the dies can be set are arranged circularly. The upper and lower buffer turrets (13, 17) are rotatably attached to a single rotary shaft (9). A diameter of the lower buffer turret (17) is made larger than a diameter of the upper buffer turret (13). The die attachment holes (15) are formed in a circular die attachment area having a diameter larger than the diameter of the upper buffer turret (13). According to the apparatus (1), a tool exchange manually operated by an operator can be done easily and efficiently.


Patent
Amada Company | Date: 2015-09-02

A tool measuring apparatus for measuring a height of a punch body and a die includes a measurement device that measures a distance from a punch reference position that is set preliminarily to an end surface of the punch body, and a distance from a die reference position that is set preliminarily to an end surface of the die. The punch reference position and the die reference position are placed independently from each other. According to the tool measuring apparatus, it is possible to measure a punch body and a die easily even in a case where a size of the punch body and a size of the die are significantly different from each other.


Patent
Amada Company | Date: 2015-04-01

An upper die 9B is removable in an up-down direction with respect to an upper die mounting groove 5 that is arranged in a left-right direction at a lower part of an upper table 1 of a press brake. The upper die includes a stop piece 19A having a stop projection 31 that is engageable with a stop groove 7 that is formed in the left-right direction in each of upper die contact faces 5F and 5R which face each other in a front-rear direction, the stop piece 19A being movable out of and into a surface of the upper die 9B and pushed in a direction to project out of the surface of the upper die. A bottom face 35 of the stop projection 31 for engaging with the stop groove 7 is an inclined face that rises toward a front end of the stop projection.


Patent
Amada Company | Date: 2015-09-02

The pump discharge flow rate of a bidirectional piston pump (31) is set to a reference pump discharge flow rate Qa if the operation state of a lifting/lowering cylinders (15) is in a no-load state, and is set to a small-flow-rate pump discharge flow rate Qb that is smaller than the reference pump discharge flow rate Qa if the operation state of the lifting/lowering cylinders (15) is in a high-load state. The value QbPb found by multiplying the pump discharge flow rate Qb and the pump discharge pressure Pb of the bidirectional piston pump (31) for when the operation state of the lifting/lowering cylinders (15) is in a high-load state is set substantially equal to or less than the value QaPa found by multiplying the pump discharge flow rate Qa and the discharge pressure Pa of the bidirectional piston pump (31) for when the operation state of the lifting/lowering cylinders (15) is in a no-load state.


A work processing apparatus upwardly turns a wrist 55 of a vertical articulated robot 50 to retract a hand 56 that is holding a work W to a position where the hand and work do not interfere with a press brake 10. In this state, an engaging projection 60 arranged at a front end of an upper arm 54 or at the wrist 55 is inserted into an engaging hole 17a of a lower die 17 of the press brake 10 and the vertical articulated robot 50 is operated to move the lower die 17 along a groove of a die holder 15.


On an inner wall of a tool attachment unit, a power feeding electrode (31) and a plurality of detection electrodes (32) is provided. When a tool including a power receiving electrode and a displacement electrode is attached onto the tool attachment unit, the power feeding electrode (31) and the power receiving electrode are opposed to each other, and the detection electrode (32) and the displacement electrode are opposed to each other. A pair of the power feeding electrode (31) and the power receiving electrode and a pair of the detection electrode (32) and the displacement electrode form a capacitor circuit. A capacity of the capacitor circuit is changed in response to a position of the tool with respect to a longitudinal direction of the tool attachment unit. A tool position detection unit (11) supplies an alternating current power feeding signal to the power feeding electrode (31). A voltage information extractor (330) extracts voltage information, which is changed in response to the capacity of the capacitor circuit, from the detection electrode (32). Based on the extracted voltage information, a position detection/arithmetic operation unit (111) detects to which position in the longitudinal direction of the tool attachment unit the tool is attached.


Patent
Amada Company | Date: 2015-09-09

A back gauge apparatus (1) for a press brake includes a slide body (11) and a work contact member (13) arranged on the slide body (11) is movable in a front-rear direction, wherein the work contact member (13) has a work contact face (13a) and is biased frontward with a pushing force. The slide body (11) has a fixing unit (17) for fixing the work contact member (13) to the slide body (11) and release the fixation of the work contact member (13) when the work contact members (13) is pressed rearward with a pressing force greater than the pushing force. The fixing unit (17) has a rotary lever (21) rotatably arranged on the slide body (11). A first end of the rotary lever (21) has a magnet (23) to magnetically fix the rotary lever(21) to the slide body (11). The work contact member (13) has a pressing member (25) to press a second end of the rotary lever (21) to release the magnetic fixation.

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