A device for expanding and shaping the end of pipes includes a head with means for connecting to an elastically deformable expanding element with a first elongated portion for being introduced into the end of the pipe, the expanding element having a central through hole, and an extracting member including an expansion head suitable to move from outside to inside the central through hole of the expanding element or the other way round, so as to cause deformation, or to allow the expanding element to elastically return to an undeformed state, means for moving said extracting member, wherein: —the connecting means is suitable for steadily constraining the expanding element to the head for a plurality of different pipes and to allow the expanding element to be replaced when worn out, the elongated portion of the expanding element is made of an elastically deformable polyurethane plastic material having certain characteristics.

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 bead forming method includes the steps of preparing a bumper stay having a partition wall that partitions an internal space and extends in a longitudinal direction, an elastic body that can be inserted into the bumper stay, and a pusher that presses the elastic body; inserting the elastic body into the bumper stay and arranging the elastic body in the bumper stay so as not to come into contact with the partition wall; and forming a buckling bead by compressing the elastic body in the longitudinal direction of the bumper stay by the pusher to expand the elastic body outward in a radial direction without coming into contact with the partition wall, thereby bulging a part of an outer wall of the bumper stay outward in the radial direction without deforming the partition wall.

A swaging tool for use with a non-circular heat exchange tube including a body having a first sealing surface positionable in contact with the heat exchange tube to form a first seal with the heat exchange tube and a second sealing surface positionable in contact with the heat exchange tube to form a second seal with the heat exchange tube. At least one fluid channel is formed in the body and is connected to an outlet port. The outlet port is arranged between the first sealing surface and the second sealing surface.

Disclosed is a joining method of members, which includes the steps of: preparing a first member in which a first hole portion having a polygonal cross-sectional shape is formed, and a second member having a hollow shape, wherein the second member has a cross-sectional shape corresponding to the polygonal cross-sectional shape of the first hole portion, the second member including a plurality of straight line portions extending linearly and corner portions positioned between the adjacent two straight line portions in the cross-sectional shape; inserting the second member into the first hole portion of the first member; and caulking and joining the second member to the first member by enlarging and deforming the corner portions.

In a method of manufacturing a heat exchanger for a rotating electrical machine, a pressing device is placed inside a tube with elastic members compressed so that a first pressing part and a second pressing part press the tube mutually oppositely in directions in which the diameter of at least a part of the tube located between two through holes of two supporting members expands. Pressure is built up in the tube and the tube is plastically deformed to form an inside large diameter part and inside connecting parts.

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.

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.

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 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.