A torsion shaft structure based multi-link all-electric servo synchronous bending machine, comprising a machine frame, a lower die fixedly connected to the machine frame and used for bending, a slider capable of moving up and down along the machine frame, and an upper die fixedly connected to the slider and cooperating with the lower die to perform bending, wherein the slider is left-right symmetrically connected to drive mechanisms for driving the slider to realize a transmission ratio adjustable motion.

A guide pin assembly includes a guide pin body that connects to a die component using retaining rings. The guide pin assembly has an upper and a lower retaining ring that permits the retention of the guide pin body in a hole in a component of a metal forming die, with each retaining ring contacting a surface of the die component. The guide pin body includes an opening to permit the temporary insertion of a device for positioning the guide pin body within the opening in the die member.

A guide pin assembly includes a guide pin body that connects to a die component using retaining rings. The guide pin assembly has an upper and a lower retaining ring that permits the retention of the guide pin body in a hole in a component of a metal forming die, with each retaining ring contacting a surface of the die component. The guide pin body includes an opening to permit the temporary insertion of a device for positioning the guide pin body within the opening in the die member.

The invention concerns a stamping tool with a tool upper body, a tool lower body arranged separately from the tool upper body, at least one stamping unit and a guide axis arranged centrally which extends partly through the tool upper body and the tool lower body, wherein the tool upper body is movable relative to the tool upper body and the guide axis guides the movement of the tool upper body.

The invention concerns a stamping tool with a tool upper body, a tool lower body arranged separately from the tool upper body, at least one stamping unit and a guide axis arranged centrally which extends partly through the tool upper body and the tool lower body, wherein the tool upper body is movable relative to the tool upper body and the guide axis guides the movement of the tool upper body.

A first-face forming portion of a workpiece and a second-face forming portion spaced apart from it by the length of an intermediate portion are clamped with a first-face forming die and a second-face forming die, respectively. The first-face forming die is moved either upward or downward and the second-face forming die is moved in a direction toward the first-face forming die, and the second-face forming die is pressed against the first-face forming die to shape the upright wall portion.

A first-face forming portion of a workpiece and a second-face forming portion spaced apart from it by the length of an intermediate portion are clamped with a first-face forming die and a second-face forming die, respectively. The first-face forming die is moved either upward or downward and the second-face forming die is moved in a direction toward the first-face forming die, and the second-face forming die is pressed against the first-face forming die to shape the upright wall portion.

The invention concerns a stamping tool with a tool upper body, an intermediate plate, at least one stamping unit, in particular several stamping units, a tool lower body to guide the stamping unit and at least two guide pillars to guide the tool upper body relative to the intermediate plate, which are solidly connected to the intermediate plate, wherein the guide pillar is arranged eccentrically and the stamping unit has a stamping punch and a stamping die separate from the stamping punch, the stamping die being operatively connected with the tool upper body.

The invention concerns a stamping tool with a tool upper body, an intermediate plate, at least one stamping unit, in particular several stamping units, a tool lower body to guide the stamping unit and at least two guide pillars to guide the tool upper body relative to the intermediate plate, which are solidly connected to the intermediate plate, wherein the guide pillar is arranged eccentrically and the stamping unit has a stamping punch and a stamping die separate from the stamping punch, the stamping die being operatively connected with the tool upper body.

A punch assembly with interchangeable tips includes a punch body and a punch tip releasably coupled to the punch body. The punch body includes a proximal end, a distal end opposite the proximal end, and a cross-sectional shape defined between the proximal end and the distal end. The proximal end includes a flange configured to engage a punch holder. The distal end includes a distal surface include a front side and a rear side. At least one first magnet faces a same direction as the front side and at least one second magnet faces a same direction as the rear side. The punch tip is coupled to the distal end of the punch body via a magnetic coupling provided by the at least one first magnet and the at least one second magnet.