The invention relates to a riveting machine comprising a piercing tool (52), an upper sheet clamp (71), and a lower sheet clamp (21), mounted movable relative to each other in the direction of bringing said sheet clamps (71, 21) closer to each other, an upper riveting tool (51) and a lower riveting tool (29) for flaring a rivet disposed inside an orifice formed through the parts (8) to be riveted. The upper sheet clamp (71) has a passage opening (72) facing which the drilling tool (52) is adapted to be positioned to enable said drilling tool (52) to pierce an area of said parts (8) clamped between the upper sheet clamp (71) and the lower sheet clamp (21). The upper sheet clamp (71) and the lower sheet clamp (21) are mounted movable relative to each other along a direction transverse to the piercing axis. The invention also relates to a riveting method.

An automatic riveting device is provided with a rivet suction attachment unit for attaching the head of a rivet by suction, a tightening unit for tightening a stringer and clip by the rivet, and a control unit. The control unit controls the rivet suction attachment unit so that the rivet suction attachment unit to which the head of the rivet is attached is moved toward an upper side support body and the shaft part of the rivet is inserted into a through hole formed in riveting position P, and controls the tightening nit so that after the rivet suction attachment unit inserts the rivet into the through hole and retreats from the riveting position P, an upper anvil and a lower anvil are brought into proximity and the stringer and clip are tightened by the rivet.

An automatic riveting device is provided with a rivet suction attachment unit for attaching the head of a rivet by suction, a tightening unit for tightening a stringer and clip by the rivet, and a control unit. The control unit controls the rivet suction attachment unit so that the rivet suction attachment unit to which the head of the rivet is attached is moved toward an upper side support body and the shaft part of the rivet is inserted into a through hole formed in riveting position P, and controls the tightening nit so that after the rivet suction attachment unit inserts the rivet into the through hole and retreats from the riveting position P, an upper anvil and a lower anvil are brought into proximity and the stringer and clip are tightened by the rivet.

An inner-ring restraint device of a hub bearing capable of restraining an inner ring efficiently without applying a load to the hub bearing. An inner-ring restraint device includes a restraint ring allowing a plurality of pieces to be arranged to form a ring shape and restricting an inner ring of a hub bearing by reducing a diameter, a support plate having a ring shape coaxial with the hub bearing, being provided so as to move in an axial direction and supporting the restraint ring at a position closer to the hub bearing for the vehicle than the restraint ring in the axial direction and a ring-shaped operation plate connected to the support plate so as to relatively move in the axial direction and applying a pressure in a direction of reducing the diameter to the restraint ring by coming relatively close to the support plate.

An inner-ring restraint device of a hub bearing capable of restraining an inner ring efficiently without applying a load to the hub bearing. An inner-ring restraint device includes a restraint ring allowing a plurality of pieces to be arranged to form a ring shape and restricting an inner ring of a hub bearing by reducing a diameter, a support plate having a ring shape coaxial with the hub bearing, being provided so as to move in an axial direction and supporting the restraint ring at a position closer to the hub bearing for the vehicle than the restraint ring in the axial direction and a ring-shaped operation plate connected to the support plate so as to relatively move in the axial direction and applying a pressure in a direction of reducing the diameter to the restraint ring by coming relatively close to the support plate.

A caulking jig comprises a main body, a blade portion having a blade edge, a projection member fit in the main body, an urging member which urges the projection member, and an engagement mechanism configured to engage the projection member to the main body. In a state in which the projection member is not engaged, the projection member is held at a projected position where a distal end portion of the projection member is projected from the blade edge. In a state in which the projection member is engaged, the projection member is held at an entered position where the distal end portion is retracted to a more entered position than the blade edge.

A caulking jig comprises a main body, a blade portion having a blade edge, a projection member fit in the main body, an urging member which urges the projection member, and an engagement mechanism configured to engage the projection member to the main body. In a state in which the projection member is not engaged, the projection member is held at a projected position where a distal end portion of the projection member is projected from the blade edge. In a state in which the projection member is engaged, the projection member is held at an entered position where the distal end portion is retracted to a more entered position than the blade edge.

An upset protrusion joining gun for joining two parts together by forging a protrusion of one part that extends through an opening in the other part to form a boss that extends over a portion of the other part surrounding the opening.

An upset protrusion joining gun for joining two parts together by forging a protrusion of one part that extends through an opening in the other part to form a boss that extends over a portion of the other part surrounding the opening.

An inner-ring restraint device of a hub bearing capable of restraining an inner ring efficiently without applying a load to the hub bearing. An inner-ring restraint device includes a restraint ring allowing a plurality of pieces to be arranged to form a ring shape and restricting an inner ring of a hub bearing by reducing a diameter, a support plate having a ring shape coaxial with the hub bearing, being provided so as to move in an axial direction and supporting the restraint ring at a position closer to the hub bearing for the vehicle than the restraint ring in the axial direction and a ring-shaped operation plate connected to the support plate so as to relatively move in the axial direction and applying a pressure in a direction of reducing the diameter to the restraint ring by coming relatively close to the support plate.