A device for fixing a nut to an inner surface of a pipe member having a small inner diameter is provided. The device includes a unit box (10) to be inserted into the pipe member, a rotation shaft (11) extending from the unit box (10) to the outside of the pipe member, a cam fixed to the rotation shaft (11) in the unit box (10), and a nut holder (18) that advances from the unit box (10) toward the inner surface of the pipe member by the rotation of the cam. A pressure receiving member to be abutted on the inner surface of the pipe member is provided on an opposite surface of the nut holder (18).

According to the embodiment of the present disclosure, it provides a method of manufacturing a piston of a pump for brake system, the piston fabricated using a piercing process by press forming to have an inlet path communicating with a suction port through which oil is introduced.

A drawn and wall ironed beverage can body, method for forming same, and a sealed and filled can, include a through-hole or aperture in the base. A grommet for charging a propellant in can is located in the aperture. The aperture has a burr that is located on the inboard side of the rim of the aperture.

There is provided a hole widening method including a preparing process of preparing a forming tool which has a diameter-increasing portion increasing in diameter from a front end side toward a rear end side and a line-shaped projection formed to protrude outward from a surface of the diameter-increasing portion, and a workpiece in which a pilot hole is formed; and a hole widening process of successively widening the pilot hole by pushing the forming tool into the pilot hole such that the line-shaped projection of the forming tool comes into point contact with a part of a circumferential edge portion of the pilot hole in the workpiece two times or more, and forming a stretched flange.

There is provided a hole widening method including a preparing process of preparing a forming tool which has a diameter-increasing portion increasing in diameter from a front end side toward a rear end side and a line-shaped projection formed to protrude outward from a surface of the diameter-increasing portion, and a workpiece in which a pilot hole is formed; and a hole widening process of successively widening the pilot hole by pushing the forming tool into the pilot hole such that the line-shaped projection of the forming tool comes into point contact with a part of a circumferential edge portion of the pilot hole in the workpiece two times or more, and forming a stretched flange.

A climate control system including a heat exchanger assembly with a housing having an external air inlet, an external air outlet, an internal air inlet, and an internal air outlet. The system further includes an auxiliary air vent assembly coupled to the heat exchanger assembly. The auxiliary air vent assembly includes a rim at least partially defining an internal air inlet region and an internal air outlet region.

A press punching machine and respective method of punching apertures in elongated non-ferric enclosed polygonally profiled workpieces are described. The press punching machine includes a base plate; a mounting framework; a driving mechanism; a male die; a pedestal; a polygonal female die matrix including: a polygonal cross-section; at least one counter-opening; at least one driven magnet; at least one indicatory magnet; at least one driving magnet configured to interact with the at least one driven magnet and a magnetic element configured to interact with the indicatory magnet embedded into the polygonal female punch die matrix.

A press punching machine and respective method of punching apertures in elongated non-ferric enclosed polygonally profiled workpieces are described. The press punching machine includes a base plate; a mounting framework; a driving mechanism; a male die; a pedestal; a polygonal female die matrix including: a polygonal cross-section; at least one counter-opening; at least one driven magnet; at least one indicatory magnet; at least one driving magnet configured to interact with the at least one driven magnet and a magnetic element configured to interact with the indicatory magnet embedded into the polygonal female punch die matrix.

The present disclosure relates to a coaxial connector and a method for producing an outer contact of the coaxial connector. The coaxial connector comprises a body, an inner contact, an outer contact, and a dielectric spacer. The body may be provided with a through hollow cavity, and the inner contact and the outer contact may be coaxially arranged in the hollow cavity of the body and may be spaced apart radially by the dielectric spacer. The outer contact may be in a shape of thin-wall cylinder and may comprise a plurality of spring fingers. The plurality of spring fingers may be spaced apart circumferentially by a plurality of slots. An end of each spring finger may be provided with a flange, and each flange may extend outwardly in a radial direction and comprises an arc portion and a flat portion. The outer contact with such a structure may provide a good interconnection quality when mating with a corresponding mating connector. The outer contact of the coaxial connector may be formed by stamping a tube, which, compared with prior art method, significantly increases the processing efficiency and reduces material and personnel costs.

The present disclosure relates to a coaxial connector and a method for producing an outer contact of the coaxial connector. The coaxial connector comprises a body, an inner contact, an outer contact, and a dielectric spacer. The body may be provided with a through hollow cavity, and the inner contact and the outer contact may be coaxially arranged in the hollow cavity of the body and may be spaced apart radially by the dielectric spacer. The outer contact may be in a shape of thin-wall cylinder and may comprise a plurality of spring fingers. The plurality of spring fingers may be spaced apart circumferentially by a plurality of slots. An end of each spring finger may be provided with a flange, and each flange may extend outwardly in a radial direction and comprises an arc portion and a flat portion. The outer contact with such a structure may provide a good interconnection quality when mating with a corresponding mating connector. The outer contact of the coaxial connector may be formed by stamping a tube, which, compared with prior art method, significantly increases the processing efficiency and reduces material and personnel costs.