A bending machine includes hydraulic cylinders capable of adjusting an inclination state, eccentric shaft units, and a control device. The control device sets an inclination state of the upper table and also sets a curved state of the lower table to conform to the inclination state of the upper table in order to carry out partial bending to pressurize a limited pressurized range compared to a pressurized range in which a workpiece is pressurized by using entire areas of an upper tool and a lower tool in a lateral direction. The control device changes a combination of the inclination state of the upper table and the curved state of the lower table and repeats the partial bending while causing a transition of the limited pressurized range in order to carry out entire area bending to pressurize the workpiece over an entire area in the lateral direction.

A press brake tool or similar machine component includes a tool body with a first end configured for operation on a workpiece and a second end configured for coupling the tool with a tool holder in a press brake or related machine tool apparatus. A latch mechanism is provided in the second end, with an actuator configured to rotate the latch mechanism into first and second positions, respectively, for selective engagement and disengagement of the tool with the tool holder.

A manufacturing method of a cover by bending a non-magnetic metal sheet, the cover being provided between an annular magnet fixed to a rotary member and a magnetic sensor detecting magnetism generated from the annular magnet, and a press die having a first die and a second die configured to be able to approach to and depart from each other. The method includes a bending step of bending the metal sheet by using a forming machine of which contact portion with the metal sheet is a non-magnetized portion. The press die presses and bends a non-magnetic metal sheet, and the first die and the second die include non-magnetic portions on a part of press faces configured to press the metal sheet, respectively, the non-magnetic portions facing each other.

An apparatus and method for crimping coupling rings are provided. The apparatus generally has a lower clamp head and an upper clamp head that may be drawn together by a fastener. The lower and upper clamp heads are designed to receive a first portion and a second portion of a coupling ring, respectively. A first and second post holds the clamp heads adjacent to each other. The upper clamp head is secured to the first post such that the upper clamp head may rotate in a generally circular motion to switch the apparatus from a closed to an open configuration, or vice versa. When the apparatus is placed in a closed configuration, the fastener may be engaged to draw the clamp heads together to increase the compressive force imposed on a coupling ring until the coupling ring becomes crimped.

A bending die for pre-bending a workpiece section includes a die section with a slot for partially receiving a bending punch for hemming a workpiece section during hemming, the slot leading from a bearing surface into the interior of the bending die, and a hemming section, arranged laterally with respect thereto, with a hemming surface. The bending punch includes a punch section (12) extending from a punch base surface and a hemming section, arranged laterally thereto, with a hemming surface. In this case, the hemming surface on the bending die is set back in a step-like manner with respect to a bearing surface of the die section, with the result that a stop surface extending from the bearing surface to the hemming surface is formed and the hemming section on the bending punch protrudes with respect to the punch base surface in the direction of the punch tip, with the result that the hemming surface protrudes in a step-like manner with respect to the punch base surface.

A tool changer includes a slider provided behind (or in front of) a table of a press brake, and configured to slide in a right-left direction along a tool installation part of the table, a finger provided in the slider, and configured to be inserted into an engagement hole extending through a tool and to move in a front-rear direction, and an engagement member configured to be protruded and retracted relative to an outer peripheral surface of the finger on a tip side, and to be engaged with a peripheral edge portion of the engagement hole of the tool (or an inner stepped portion formed at an intermediate position of the engagement hole).

A controller of a press device causes a presser to stop pressing upon a press die being displaced by a specific dimension after a time point when a detection value provided by a pressing force detector has exceeded a threshold value.

A method for manufacturing a product includes placing a processing target material on a die, bringing a first punch into contact with the processing target material placed on the die, and bending the processing target material by pressing the processing target material by the first punch. The bringing the first punch into contact with the processing target material placed on the die includes bringing two pressing portions of the first punch into contact with two first groove portions of the processing target material and bringing a recess portion of the first punch into contact with a projection portion of the processing target material.

An upper tool stocker for detachably supporting a plurality of divided upper tools in a press brake includes a stocker main body extending in a left-right direction, and provided with a left-right directional installing groove, attachment portions provided in upper portions of the divided upper tools being detachably installed in the installing groove, wherein the stocker main body includes a front-back directional cutout communicated with the installing groove to remove the divided upper tools downward or in the front-back direction from the installing groove.

A rotary bending device for bending workpiece includes a saddle, a rocker, and first and second alignment elements. The saddle includes a longitudinally extending cavity in which the rocker is received, and the rocker rotates relative to the saddle between a neutral position and a bending position for bending the workpiece. The first alignment element is provided on the rocker, and the second alignment element is positioned to engage the first alignment element to limit axial movement of the rocker relative to the saddle during rotation of the rocker between the neutral position and the bending position. The rocker may tangentially contact a bearing surface of the cavity at no more than two lines of tangential contact during rotation. The rocker may further include a longitudinally extending shoulder, and the device may further include a return element positioned to contact the shoulder for biasing the rocker toward the neutral position.