Abstract:
A forming method for applying a continuous punching to a chain roller includes a raw block having a first surface and a second surface. The raw block would be sequentially punched and formed throughout the first to sixth punching or throughout the first to seventh punching. During the fourth punching, a first blanking would be executed. Alternatively, before executing the sixth or the seventh punching, a second blanking would be implemented.
Abstract:
A thermal module directly press-forged from magnesium alloy is disclosed having a peripheral wall, a recessed chamber surrounded by the peripheral wall. The body is made of magnesium alloy by means of softening magnesium alloy with heat and then press forging softened magnesium alloy into the desired shape.
Abstract:
A race member in a hub unit for supporting a wheel. The race member includes a cylinder portion, a flange portion bend radially outward from the cylinder portion, and a continuous portion that integrally connects the cylinder portion with the flange portion. The race member is integrally formed by subjecting a metal plate to punching and cold plastic working. The continuous portion is larger in thickness than the metal plate.
Abstract:
A method for forming a helical pinion gear (12) for a rack and pinion steering apparatus (10) comprises the steps of: providing a cylindrical first blank (60) made of a deformable material and having an outer surface (68); providing a cylindrical second blank (100) made of a deformable material and having an outer surface (108); forming a bore (116) extending at least partially through the second blank (100); forming helical teeth (52) on the outer surface (108) of the second blank; and interconnecting the second blank (100) with the first blank (60) to form the helical pinion (12). The helical teeth (52) on the pinion (12) mesh with rack teeth (44) on a rack (16) in a rack and pinion steering apparatus (10).
Abstract:
A method for forming a cavity structure provided with a thin bottom plate is comprises the following steps. The first step is to deform plastically a part of a metal plate so as to form a cavity on one surface of a metal plate wherein the cavity has an oddly bottom surface provided with subsections being different from each other in depth. Simultaneously a protrusion is formed on the other surface of the metal plate by shifting an amount of metal corresponding to the cavity into the protrusion wherein the protrusion has substantially similar figure to the cavity. Then a coupling section, which keeps the protrusion integral with the metal plate, is formed so as to make the protrusion smaller than the cavity. And the protrusion is removed from the metal plate so as to make the other surface of the metal plate flat and to form the bottom plate of the cavity thin while remaining the coupling section.
Abstract:
The process is characterized by means of successively executed displacements of material of a work piece into the inner bore diameter at different points of the mouth of a bore. The displacement of the material is executed by means of a die that can be moved at least approximately in the direction of the bore axis. The process for tightly closing a bore can preferably be used with work pieces comprised of ductile material, in particular an aluminum wrought alloy.
Abstract:
In order to simplify the production of a nigh-resistance bobbin body made of an aluminum alloy, the following process steps are performed: (a) extruding or flow extruding an essentially cylindrical bobbin blank; (b) cutting the bobbin blank to a length including the desired bobbin body length plus an overlength sufficient to form end flanges on the bobbin body; (c) shaping end flanges at both ends of the bobbin body from the overlength portion; hardening the bobbin body; and age-hardening (aging) the bobbin body. Various process parameters are described.
Abstract:
A subject of the invention is the radial extrusion process combined with inside tube ironing, which is in essence a cold extrusion process and can be reckoned among bulk metal forming processes. It enables tube shaped metal semiproducts to be formed into different final shaped parts or parts that are intended for additional working, for example by machining. The process is grounded on insertion of a tube, which may be on one end previously expanded, into a proper shaped die, where on one side there is a punch which is retained with a determined force and inside which lies a free movable mandrel, while from the other side in working stroke the counter-punch extrude the difference of tube volume which results from ironing of the tube, in the direction of counter-punch travel so, that the material fills up the starting clearance between the mandrel and the tube, the space between the tube and the punch and arbitrary shaped space in the punch or in the die.
Abstract:
A method and apparatus to cold form an L-shaped lead battery terminal. The apparatus includes a forming station for cold forming an L-shaped lead battery terminal having a tower offset from the head. The forming station includes a split die for forming a head having a radial ring. The apparatus also includes a punching station for forming a continuous through hole in the head and a recess in the tower. Another method and apparatus to cold form an L-shaped lead battery terminal includes a forming station, punching station and a rolling station for forming a ring on the terminal. The forming station includes a unitary die to form a head having a uniform diameter and a tower offset from the head. The rolling station includes a fixture, a rolling head having a plurality of rollers, and a drive system for engaging and rotating the rolling head and lead battery terminal relative to each other.
Abstract:
The fastener assembly includes a generally solid pin, positioned within a tubular fastener body and a buckle sleeve. The fastener body has a generally cylindrical configuration and includes an enlarged head adjacent one end thereof, an intermediate shank portion, and a nose portion adjacent the other end thereof. The nose portion engage the buckle sleeve, and during installation causes the buckle of the buckle sleeve to form prior to workpiece contact by the interaction between the nose portion of the fastener and the leading edge of the buckle sleeve. The sleeve buckles the intersection between a trailing section and the largest inner diameter at the end of a tapered interior section.