Wellbore tool assembly to open collapsed tubing includes a chisel head having a first end configured to be positioned within an end of a collapsed tubing portion of a tubular member. The chisel head has a second end opposite the first end. The second end has an outer diameter smaller than an outer diameter of an uncollapsed tubing portion of the tubular member. The chisel head is configured to expand a diameter of the collapsed tubing portion responsive to a movement of the chisel head toward the collapsed tubing portion. The assembly includes a packer attached to the chisel head. The packer is configured to expand responsive to fluidic pressure and to further expand the diameter of the collapsed tubing portion.

A bumper system includes a rear wall of a bumper beam provided with hole portions, and a bumper stay including tubular portions extending in the longitudinal direction, the tubular portions being inserted into the hole portions and joined to the hole portions by pipe expansion joining. The bumper stay includes a pulling-out obstructing portion protruding from the outer surfaces of the tubular portions in a cross section perpendicular to the longitudinal direction. The pulling-out obstructing portion abuts on the rear wall of the bumper beam in the direction in which the bumper stay is pulled out from the hole portions.

In a bumper system, one end portion of a first tube is inserted into first beam holes, and the other end portion of the first tube is inserted into a first plate hole, one end portion of a second tube is inserted into second beam holes, and the other end portion of the second tube is inserted into a second plate hole. The bumper stay is joined to a bumper beam and a vehicle body plate by press-fitting in a state in which the first tube is expanded at the holes and the second tube is expanded at the holes. A first connection rib is in contact with the bumper beam, and a second connection rib is in contact with the vehicle body plate in the same direction as a direction in which the first connection rib is in contact with the bumper beam.

A device for expanding and shaping the end 1A of pipes 1, comprising: a head 10C comprising means 11 for connecting the head 10c itself to an expanding element 2 expanding said end 1A of the pipe 1, said expanding element being made of an elastically deformable material, wherein said expanding element 2 comprises a first elongated portion 2D having an outer surface 2A with a maximum diameter D1 which is less than or equal to the internal diameter D2 of the end 1A of the pipe to be expanded and shaped, so that at least said first elongated portion 2D of the expanding element can be introduced into said end 1A of the pipe 1, wherein said expanding element 2 comprises a central through hole 2B arranged coaxially to a longitudinal axis LI of said expanding element 2 delimited by an inner surface 2C, an extracting member 3 comprising an expansion head 3A suitable to move, coaxially to the longitudinal axis L1 of said expanding element 2, from the outside to the inside of said central through hole 2B of the expanding element 2 or the other way round, so as to cause a deformation of said expanding element, or the other way round to allow said expanding element to elastically return to an undeformed state, means (4, 24 25 26) for moving said extracting member 3, wherein: the means 11 for connecting the expanding element 2 to the head 10B of the device are suitable for steadily constraining said expanding element to said head for a plurality of succeeding deformation and shaping operations on the end 1A of a plurality of different pipes 1 and to allow said expanding element 2 to be replaced when said expanding element 2 is worn out, at least said elongated portion 2D of the expanding element 2 is made of an elastically deformable polyurethane plastic material, having: a hardness between 45D and 60D, and an elongation at break between 400% and 600%, and/or a modulus of elasticity, at 300% of deformation, between 30 and 60 MPa.

An arrangement for working a tube end includes: an operating cylinder with a piston displaceable along an longitudinal axis; and a tube mounting, a tool holder being provided at an end of the piston facing the tube mounting. The operating cylinder is provided as a tandem cylinder. At least two cylinder stages are offset along the longitudinal axis. The piston includes connected piston segments, each piston segment being allocated to a cylinder stage.

A method for fixing a steering support capable of improving efficiency when the steering support is fixed to an instrument panel reinforcement body is provided. The method for fixing the steering support according to one aspect of the present disclosure includes processes of: passing an instrument panel reinforcement body through a first through-hole formed in a steering support; and increasing the pressure inside an area of the instrument panel reinforcement body covered with the steering support, plastically deforming the area of the instrument panel reinforcement body from an inside to an outside, and pressing a circumferential surface of the first through-hole of the steering support by an outer circumferential surface of the area of the instrument panel reinforcement body.

A method for joining members according to the present invention includes: providing a first member, a second member, a guide shaft member, a rubber member, a first plunger, a second plunger, and a drive mechanism; inserting the second member into a hole portion of the first member; inserting the guide shaft member into a through-hole of the rubber member; inserting the rubber member, into which the guide shaft member is inserted, inside the second member; arranging an assembly in which the first member, the second member, the rubber member, and the guide shaft member so as to horizontally extend; arranging the assembly so as to be sandwiched by the first plunger and the second plunger; and moving the second plunger toward the first plunger; compressing the rubber member by the first plunger and the second plunger in a direction where the guide shaft member extends, and expanding the rubber member radially outside the guide shaft member; and thus expanding and deforming at least a portion of the second member that is inserted into the hole portion to join the portion to the first member by press-fitting.

A method for joining members according to an embodiment of the present invention includes: providing a bumper stay including two integrated pipe portions extending in an identical direction, the bumper stay including a recess provided between the pipe portions being adjacent to each other, the recess extending in a longitudinal direction of the pipe portions from end surfaces of the pipe portions, a part of the recess serving as a locking portion, and a bumper beam including a rear inclined wall formed with two hole portions into which the pipe portions of the bumper stay are insertable respectively; inserting the bumper stay into the hole portions of the bumper beam until the locking portion abuts on the rear inclined wall; and pipe-expanding an insertion portion of the bumper stay into the bumper beam to join the insertion portion to the bumper beam by press-fitting.

A method is provided for connecting a first component to a second component. The first component has a deformation region, wherein the deformation region is at least partially heated in a first step. An inner die for the plastic deformation is provided in a second method step. The first component is plastically deformed in the deformation region in order to connect the first component to the second component in a third step, and wherein the deformation region is at least partially contacted by the inner die in the second step.

A portable tool having a working head that is actuated by an electric motor and/or a hydraulic medium and has a working part. The working part is displaceable in a displacement direction and the working head is rotatable together with the working part in the circumferential direction with respect to the displacement direction. The working head is rotatable together with the working part hydraulically and by the motor. The working head has a segment mounted therein, the segment having a largest extension in the circumferential direction by a first angular amount, and that the rotation of the working head and the working part takes place in the circumferential direction by a second angular amount, wherein values of the first and the second angular amounts are different. Moreover, a method for operating a portable tool is provided using first and second hydraulic pistons.