Systems, apparatuses, and methods to bend a tube at a predetermined location and angle are disclosed herein. An apparatus may have a body and a trigger pivotably attachable to the body. The body may have a female component to retain and prevent unwanted longitudinal movement of the tube towards a bottom of the body and lateral movement of the tube. The trigger may have an arcuate surface that contacts the tube to bend the tube when the trigger is squeezed.

Systems, apparatuses, and methods to bend a tube at a predetermined location and angle are disclosed herein. An apparatus may have a body and a trigger pivotably attachable to the body. The body may have a female component to retain and prevent unwanted longitudinal movement of the tube towards a bottom of the body and lateral movement of the tube. The trigger may have an arcuate surface that contacts the tube to bend the tube when the trigger is squeezed.

A mandrel for pipe bending machine has an elongated body (3) with a first end connected to a mandrel rod and a second end, opposite to the first, in which there is a spherical seat (8), several intermediate articulated elements (10) and a terminal articulated element (11). Each intermediate joint element (10) and the terminal joint element (11) have a peripheral part (12) configured so as to lean against the inner wall of a pipe (T) to be bent. Each intermediate articulated element (10) has a cup-shaped part (13) in one piece, and a stem (19) extending externally from it, and a spheroidal part (21) in one piece, configured so as to be introduced in a cup-shaped part (13) of a previous intermediate articulated element (10).

A mandrel for pipe bending machine has an elongated body (3) with a first end connected to a mandrel rod and a second end, opposite to the first, in which there is a spherical seat (8), several intermediate articulated elements (10) and a terminal articulated element (11). Each intermediate joint element (10) and the terminal joint element (11) have a peripheral part (12) configured so as to lean against the inner wall of a pipe (T) to be bent. Each intermediate articulated element (10) has a cup-shaped part (13) in one piece, and a stem (19) extending externally from it, and a spheroidal part (21) in one piece, configured so as to be introduced in a cup-shaped part (13) of a previous intermediate articulated element (10).

A pipe bending system for pressure bending a pipe is disclosed. The pipe bending system includes a pipe having a first end and a second end; a housing including a bending configuration and configured to house the pipe; a flexible material placed within an interior space of the pipe; and a pressing device configured to press the flexible material housed inside the interior space of the pipe. The pressing device includes a first arm, a second arm, and a controller. The flexible material includes a plurality of pieces each having a different elasticity type.

A pipe bending system for pressure bending a pipe is disclosed. The pipe bending system includes a pipe having a first end and a second end; a housing including a bending configuration and configured to house the pipe; a flexible material placed within an interior space of the pipe; and a pressing device configured to press the flexible material housed inside the interior space of the pipe. The pressing device includes a first arm, a second arm, and a controller. The flexible material includes a plurality of pieces each having a different elasticity type.

A method for determining elastomer types as pipe filler for pressure bending of a pipe, comprising: selecting a set of elastomer types; obtaining sample pieces from the elastomer types; applying strain test on the sample pieces; determining properties of the sample pieces; calculating strain energy and error function for each sample piece based on an energy model; calculating elastic modulus for each sample piece; selecting elastomer types from the set of elastomer types; analyzing results from the calculation of strain energy, error function and the elastic modulus for the selected elastomer types; simulating the pressure bending process of the pipe, using pipe filler made from the selected elastomer types; and when simulation results indicate an acceptable pressure bent pipe due to the simulated pressure bending, selecting the one or more elastomer types associated with the acceptable pressure bent pipe for the pipe filler.

An apparatus and a method for bending a heat exchanger. The apparatus includes: a plurality of support members, each of which includes a first support plate having a first support surface, a second support plate having a second support surface, and a connecting plate. The first support plate and the second support plate are spaced apart in a transverse direction. A distance between the first support surface and the second support surface keeps unchanged during bending a heat exchanger. A distance between a first support surface and a second support surface of one support member of any two support members is equal to a distance between a first support surface and a second support surface of the other support member. A connecting component connects the plurality of support members in a longitudinal direction.

An elastic double-support variable-diameter mandrel for bending of an aircraft engine-specific metal conduit includes a frame receiving pipe, an elastic outer frame and an inner hydraulic component. In the inner hydraulic component, an inner chamber of an elastic membrane is filled with a liquid, a tail end of the elastic membrane is provided with an opening, the opening communicates with a first end of a liquid delivery pipe through a pipe joint, and a second end of the liquid delivery pipe is connected to an external hydraulic system. The elastic outer frame is a flexible single unit composed of a tie rod and an elastic mesh structure. The tie rod includes an elastic traction segment, a straight segment and a pull ring. The elastic mesh structure includes wavy metal strip circumferences and anti-fatigue elastic connectors. The frame receiving pipe is sleeved outside the elastic outer frame/inner hydraulic component.

An elastic double-support variable-diameter mandrel for bending of an aircraft engine-specific metal conduit includes a frame receiving pipe, an elastic outer frame and an inner hydraulic component. In the inner hydraulic component, an inner chamber of an elastic membrane is filled with a liquid, a tail end of the elastic membrane is provided with an opening, the opening communicates with a first end of a liquid delivery pipe through a pipe joint, and a second end of the liquid delivery pipe is connected to an external hydraulic system. The elastic outer frame is a flexible single unit composed of a tie rod and an elastic mesh structure. The tie rod includes an elastic traction segment, a straight segment and a pull ring. The elastic mesh structure includes wavy metal strip circumferences and anti-fatigue elastic connectors. The frame receiving pipe is sleeved outside the elastic outer frame/inner hydraulic component.