A vehicle seat frame includes a pair of side frames constituting side portions of a seat cushion frame, and a pipe member rotatably fitted at respective end portions in sliding holes of the side frames, thereby coupling the side frames to each other. At least one of the end portions of the pipe member is coupled to the corresponding side frame via a collar member having a cylindrical shape. An outer peripheral portion of the collar member has a sliding contact portion in sliding contact with a peripheral surface of the sliding hole. An inner peripheral portion of the collar member has an insertion-receiving portion into which the corresponding end portion of the pipe member is inserted and to which the corresponding end portion of the pipe member is secured. The dimensional tolerance of the sliding contact portion is set smaller than the dimensional tolerance of the insertion-receiving portion.

A pressed component is formed by pressing a preform having a tapered tubular portion and a sloping portion provided at an end of the tubular portion and curved in a circular arc. Pressing is performed by a forming die apparatus including a holding body, a piercing punch, and a piercing die. When the tubular portion of the preform is held by an outer fixing and supporting portion of the holding body and an inner fixing and supporting portion of the piercing die, the forming die apparatus cuts off a portion of the sloping portion using an outer cutting edge of the piercing punch and an inner cutting edge of the piercing die and then causes a pressing portion of the piercing punch to bend and press the remaining portion of the sloping portion within a forming space to form a corner portion.

A disc spring which is used by arranging a plurality of the disk springs in an axial direction along a central axis includes an annular body plate portion that has an inner peripheral surface and an other peripheral surface which gradually extend toward one side in the axial direction from an outside toward an inside in a radial direction, and a stopper portion that protrudes from the body plate portion in a direction intersecting the inner peripheral surface and the outer peripheral surface of the body plate portion, in which in a case where an axial compression load is applied to a spring member in which a plurality of the disc springs are arranged in the axial direction, the stopper portion abuts another disk spring adjacent in the axial direction or a support member supporting an axial end portion of the spring member, the body plate portion and the stopper portion are integrally formed, and both axial end edges of the stopper portion are positioned inside both axial end edges of the body plate portion in the axial direction.

A processing device is provided which feeds a long plate body from an upstream side to a downstream side and sequentially carries out a press work including a blanking work to the long plate body. The processing device includes a plurality of stages provided along a feed direction of the long plate body, which has a die that applies the press work to the long plate body and a plurality of lifters provided along the feed direction of the long plate body which have lift-up parts that lift up the long plate body from the die. In the plurality of lifters, clearances by the lift-up parts of the lifters arranged in the downstream side are set to be larger than the clearances by the lift-up parts of the lifters arranged in the upstream side.

Provided is a method for manufacturing vehicle parts having ultra-high strength of 500 Mpa or more by using hot stamping. The method includes: forming a heated blank in a press forming apparatus; and taking out the formed blank from the press forming apparatus and consecutively cutting the blank with a trimming die. A blank temperature at the time of trimming may be 150 C. to 330 C.

The present invention discloses a burner, a gas water heater and a processing method of fire row, wherein the burner comprising: a plurality of fire rows; an air channel is formed between at least two fire rows; the fire row has a burning substrate; the burning substrate is provided with main burning holes; the burning substrate is further provided with auxiliary burning holes downstream of the main burning holes; at least one the auxiliary burning hole is disposed on at least one side of the main burning hole in a length direction of the burning substrate; flame of the auxiliary burning hole intersect with flame of the main burning hole; and a frame for mounting the fire rows. The burner, the gas water heater and the processing method of the fire rows disclosed in the present invention can help to decrease flame height, facilitate manufacturing and reduce costs.

A metallic plate for an electrochemical system is provided. The plate has at least one measuring structure formed in one piece with the plate. The measuring structure has at least two cuts through the plate and a first deformation of the plate arranged between the cuts. The cut edges are spaced apart from one another in sections by the first deformation so that the cut edges form at least two windows in the plate. The measuring structure has at least a second deformation of the plate. The plate is deformed by the second deformation in the region of the plate adjacent to the windows in such a manner that the windows allow light that falls on the plate orthogonally to the main plane of the plate to pass through. As described is a method of producing a metallic plate including at least one measuring structure.

A metallic reflector manufacturing method for an LED package. The method includes preparing a metal plate, and processing a stamping reflector that includes a lower body and an upper body that is extended from an upper side of the lower body and is integrally formed with the lower body. A reflection surface that is slanted by a predetermined angle is formed at a central portion of the upper body and the lower body to reflect the light of the LED chip to the outside. A fixation portion is formed to fix the lower body on a substrate that the LED chip is mounted on. The method further includes sequentially plating Ni and Ag on the reflection surface or the stamping reflector surface. The stamping processing includes a piercing step, a drawing step, a first noting step, a half etching step that forms the fixation portion, and a second notching step.

A hot stamping system of automotive parts to enable the production of the body in white and moving parts, which form the body of a car in a single production plant (1) from blanks. Said system consists of two by two operating groups (2 and 3) of equipment, namely: a group for the fixed parts and a group for the moving parts, each composed of production units (4), which are fed (5) with blanks, previously individually cut into the required dimensions (5) and inspected (6), for entry into the stamping tool (matrix) in accordance with the shape and dimensions of the part to be made in the respective unit, distributed (7) both to the group of fixed parts and to the group (3) of moving parts. Each of the production units comprises: a blank feed rack (8), two to three handling robots (9, 11 and 13), a Joule heating device (10), A press (12) with the tool (matrix) relative to the workpiece to be stamped, and a storage rack (14).

A nut integrated with a bracket and a method of manufacturing the same is provided. The method includes a pre-drawing operation that forms a reference aperture and a processing cross section in the plate material supplied between the punch and the die, forming a beading portion and piercing a center of the beading portion. A forging operation forms a pipe portion having a tube shape and processes an exterior circumferential surface of the pipe portion. A precision forging process adjusts dimensions of the pipe portion formed in the tube shape, forms a protruding end that extends on a tip surface of the pipe portion and compresses the pipe portion to remove residual burrs on a surface. A post-processing operation cuts the processing cross section to a final product shape, and forms a threaded tap on an interior circumferential surface of the pipe portion.