A crawler track shoe core metal is plate shaped and is clamped and fixed by a fixing member to a moving link provided at a travelling body. The crawler track shoe core metal includes a cutout portion, a through-hole, and a raised portion. The cutout portion is formed indented in a face at the moving link side. The through-hole pierces through inside the cutout portion in a plate thickness direction and is inserted with the fixing member. The raised portion projects out from a through-hole peripheral edge of the cutout portion toward the moving link side, and has a projecting end with a height that does not reach the face at the moving link side.

To provide a stacking apparatus and a stack manufacturing system having high accuracy and productivity. A stacking apparatus 10 includes: a stage unit 40 on which a first material to be stacked 91 and a second material to be stacked 92 are stacked and placed; a sandwiching member 31 that is vertically movable with respect to the stage unit 40, and between which and the stage unit 40 the first material to be stacked 91 an the second stacked 92 are sandwiched; and a press member 33 that is vertically movable with respect to the sandwiching member 31 and simultaneously presses the first material to be stacked 91 and the second material to be stacked 92.

To provide a stacking apparatus and a stack manufacturing system having high accuracy and productivity. A stacking apparatus 10 includes: a stage unit 40 on which a first material to be stacked 91 and a second material to be stacked 92 are stacked and placed; a sandwiching member 31 that is vertically movable with respect to the stage unit 40, and between which and the stage unit 40 the first material to be stacked 91 an the second stacked 92 are sandwiched; and a press member 33 that is vertically movable with respect to the sandwiching member 31 and simultaneously presses the first material to be stacked 91 and the second material to be stacked 92.

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 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 knuckle bracket includes a bracket main body that has an inner peripheral shape along a tube of a shock absorber and a pair of attachment parts that are formed to protrude parallel to each other. The apparatus for manufacturing the knuckle bracket includes a width molding machine that molds a width of the pair of attachment parts in a state where the workpiece is supported on a support shaft, and a hole punching machine that machines attachment holes into the pair of attachment parts in a state where the workpiece is supported on the support shaft. The workpiece is transported from the width molding machine to the hole punching machine by moving the workpiece along the support shaft until the workpiece is above the die after the support shaft is raised and then lowering the support shaft until the support shaft abuts a top surface of the die.

A knuckle bracket includes a bracket main body that has an inner peripheral shape along a tube of a shock absorber and a pair of attachment parts that are formed to protrude parallel to each other. The apparatus for manufacturing the knuckle bracket includes a width molding machine that molds a width of the pair of attachment parts in a state where the workpiece is supported on a support shaft, and a hole punching machine that machines attachment holes into the pair of attachment parts in a state where the workpiece is supported on the support shaft. The workpiece is transported from the width molding machine to the hole punching machine by moving the workpiece along the support shaft until the workpiece is above the die after the support shaft is raised and then lowering the support shaft until the support shaft abuts a top surface of the die.

The present disclosure relates to a chair tray and chassis, chassis forming method and chassis mounting structure of the same. The chair chassis comprises a chassis body that is arranged with a mounting hole thereon for mounting a regulating knob. The edge at the position corresponding to the mounting hole of the chassis body is arranged with a flange. The structural strength and the fatigue strength of the chassis can be enhanced effectively by arranging the flange at the position corresponding to the mounting hole of the chassis, which avoids the occurrence of fracture at the perimeter of the mounting hole of the chassis during use or test and thus enables the thickness of the chassis to be reduced below 3 mm, reducing production material to a very large extent and saving production cost while also ensuring that it can pass the back pad fatigue test in the BIFMA standard.

The present disclosure relates to a chair tray and chassis, chassis forming method and chassis mounting structure of the same. The chair chassis comprises a chassis body that is arranged with a mounting hole thereon for mounting a regulating knob. The edge at the position corresponding to the mounting hole of the chassis body is arranged with a flange. The structural strength and the fatigue strength of the chassis can be enhanced effectively by arranging the flange at the position corresponding to the mounting hole of the chassis, which avoids the occurrence of fracture at the perimeter of the mounting hole of the chassis during use or test and thus enables the thickness of the chassis to be reduced below 3 mm, reducing production material to a very large extent and saving production cost while also ensuring that it can pass the back pad fatigue test in the BIFMA standard.

The present invention discloses a chair tray and chassis, chassis forming method and chassis mounting structure of the same. The main points of its technical solution are that the chair chassis comprises a chassis body that is arranged with a mounting hole thereon for mounting a regulating knob. The edge at the position corresponding to the mounting hole of the chassis body is arranged with a flange. The structural strength and the fatigue strength of the chassis can be enhanced effectively by arranging the flange at the position corresponding to the mounting hole of the chassis, which avoids the occurrence of fracture at the perimeter of the mounting hole of the chassis during use or test and thus enables the thickness of the chassis to be reduced below 3 mm, reducing production material to a very large extent and saving production cost while also ensuring that it can pass the back pad fatigue test in the BIFMA standard. Additionally, the fact that the flange surrounds the mounting hole can increase the structural strength and the fatigue strength at the perimeter of the mounting hole of the chassis more all around with a better effect.