Provided is a blank made of a steel and comprising at least two protruding regions (313) having an outer edge (311) protruding outward in in-plane directions, in which a softened part (320) is formed at least partially in the protruding regions (313) and the softened part (320) is formed in at least a part of the outer edge of the protruding regions (313), a Vickers hardness of the softened part (320) is lower than a Vickers hardness of a main portion region (310), and the blank comprises at least two of the protruding regions (313) having the softened part (320).

To provide a drawing-out tool for sheet metal which is less in failure and excellent in the durability and has excellent handling property by evading generation of trouble in an electric system by shielding dust, metal dust, soil dust or the like from mingling in or attaching to the electric system. The drawing-out tool for sheet metal comprises a center shaft (22); a first operation means (20) provided with a bit (25) arranged to an apex part of the center shaft; a second operation means (30) for pulling-up the first operation means; and an energization mechanism (100) for supplying electric current to the bit are provided. The housing (10) for accommodating the illumination unit (70) and the illumination unit for illuminating a sheet metal surface accommodated in the housing are included.

To provide a drawing-out tool for sheet metal which is less in failure and excellent in the durability and has excellent handling property by evading generation of trouble in an electric system by shielding dust, metal dust, soil dust or the like from mingling in or attaching to the electric system. The drawing-out tool for sheet metal comprises a center shaft (22); a first operation means (20) provided with a bit (25) arranged to an apex part of the center shaft; a second operation means (30) for pulling-up the first operation means; and an energization mechanism (100) for supplying electric current to the bit are provided. The housing (10) for accommodating the illumination unit (70) and the illumination unit for illuminating a sheet metal surface accommodated in the housing are included.

A device and a method are provided for shaping sheet metal. The device is provided with a plurality of support and clamping elements which are designed to cooperate with one another so as to clamp the sheet metal for a shaping process by mechanically contacting the sheet metal and by holding, orienting, and/or positioning processes. A plurality of actuators are designed to orient and/or position the plurality of support and clamping elements. A controller for the actuators is designed to control the plurality of actuators for adjusting the orientation and/or position of the support and clamping elements.

A device and a method are provided for shaping sheet metal. The device is provided with a plurality of support and clamping elements which are designed to cooperate with one another so as to clamp the sheet metal for a shaping process by mechanically contacting the sheet metal and by holding, orienting, and/or positioning processes. A plurality of actuators are designed to orient and/or position the plurality of support and clamping elements. A controller for the actuators is designed to control the plurality of actuators for adjusting the orientation and/or position of the support and clamping elements.

Disclosed are a method for manufacturing an electrode assembly and a pressing device for the pressing electrode assembly.

According to the present invention, the electrode assembly on which a curved surface having a curvature radius, which conforms to a curvature radius that is originally intended to be formed, is formed may be manufactured.

Also, the electrode assembly on which a curved surface having a uniform curvature radius is formed by reducing or eliminating a difference between a curvature radius at a central portion of the electrode assembly and a curvature radius at each of both ends of the electrode assembly may be manufactured.

According to an aspect of the present invention for achieving the above object, provided is a method for manufacturing an electrode assembly, the method including: a step of preparing an electrode assembly including an electrode and a separator and a pressing unit pressing the electrode assembly; and a pressing step of pressing a top or bottom surface of the electrode assembly by using the pressing unit to form a curved surface on the electrode assembly, wherein the pressing step includes: pressing a plurality of areas, which are spaced apart from each other, on the top or bottom surface of the electrode assembly through the pressing unit without pressing an area between the plurality of areas.

A process for making a shaped-part from a heat-treatable aluminum alloy blank comprises providing the blank in a hardened temper state, for instance the T6 or another suitable temper state. The as-provided blank is subjected to selective heating, such that a first portion of the blank is heated to a predetermined first temperature for a predetermined first length of time and a second portion of the blank is heated to a predetermined second temperature for a predetermined second length of time. The heated blank is then formed into the desired shape of the shaped-part, and is cooled to ambient temperature. The selective heating substantially increases ductility to facilitate forming of the blank into the desired shape of the shaped part, and provides desired mechanical properties within first and second portions of the shaped part corresponding to the first and second portions of the blank.

A process for making a shaped-part from a heat-treatable aluminum alloy blank comprises providing the blank in a hardened temper state, for instance the T6 or another suitable temper state. The as-provided blank is subjected to selective heating, such that a first portion of the blank is heated to a predetermined first temperature for a predetermined first length of time and a second portion of the blank is heated to a predetermined second temperature for a predetermined second length of time. The heated blank is then formed into the desired shape of the shaped-part, and is cooled to ambient temperature. The selective heating substantially increases ductility to facilitate forming of the blank into the desired shape of the shaped part, and provides desired mechanical properties within first and second portions of the shaped part corresponding to the first and second portions of the blank.

A tool kit for bending a metal tray including a middle bending tool, a right bending tool, and a left bending tool. The middle bending tool further includes a middle lower handle and a C-shaped middle top clamping member. The middle lower handle is perpendicularly extended from the middle bottom plate of the middle top clamping member. The right bending tool further includes a right lower handle and a C-shaped right top clamping member. The right lower handle is rightwardly extended at a forty-five degree angle from the right bottom plate of the right top clamping member. The left bending tool further includes a left lower handle and a C-shaped left top clamping member. The left lower handle is leftwardly extended at a forty-five degree angle from the left bottom plate of the left top clamping member.

A tool kit for bending a metal tray including a middle bending tool, a right bending tool, and a left bending tool. The middle bending tool further includes a middle lower handle and a C-shaped middle top clamping member. The middle lower handle is perpendicularly extended from the middle bottom plate of the middle top clamping member. The right bending tool further includes a right lower handle and a C-shaped right top clamping member. The right lower handle is rightwardly extended at a forty-five degree angle from the right bottom plate of the right top clamping member. The left bending tool further includes a left lower handle and a C-shaped left top clamping member. The left lower handle is leftwardly extended at a forty-five degree angle from the left bottom plate of the left top clamping member.