Forming die for half-housing body of axle housing and machining technology

Abstract

The invention relates to a forming die for a half-housing body of an axle housing and a machining technology. The forming die for the half-housing body of the axle housing is characterized in that thetops of the upper end faces of the two side walls of a female die body of the die are on the same plane and are the same in height, and the upper end faces and the inner walls of the female die bodyare in smooth transition; the side walls of the female die body are in the same cross-section shape in the length direction; an ejector is located at the bottom of the die; and the upper surface of the ejector and the bottom profile of the female die body of the die jointly form the shape of the outer surface of the bottom of the half-housing body. According to the forming die for the half-housingbody of the axle housing and the machining technology, the quality problems of unevenness, severe strain and severe gnawing of the plate surface in the stamping forming process of the half-housing body of the axle housing are solved, and in addition, the problems that due to an existing technology and an existing die structure, galling and strain of an opening of the female die body of the die are likely to occur, and built-up edges are likely to be formed at the opening of the female die body of the die are solved; and by changing the die structure, the half-housing body forming technological process is adjusted, namely the forming process of the half-housing body is changed from the original process that longitudinal bending is conducted first and then two-side edge turning is conductedto the technological process that forming is conducted gradually with two-side edge turning as the main step and longitudinal bending as the auxiliary step, so that the bending process of the axle housing is completed under the constraint condition of the die, and it is guaranteed that wrinkling, strain and gnawing of the plate surface of the half-housing body are avoided.

Description

technical field [0001] The invention relates to a mold for forming a half-shell of an axle housing and a processing technology, belonging to the field of stamping and forming of the half-shell of an axle housing. Background technique [0002] At present, the stamping process is widely used in the half-shells of axle housings at home and abroad. The half-shells with thick sheet thickness greater than 12mm are mostly formed by hot stamping, and the half-shells below 12mm (including 12mm) are often formed by cold stamping. However, regardless of hot stamping or cold stamping, the forming process is longitudinal bending first (when there is a blank holder, the sheet material is bent longitudinally during the blank holder process), and then flanging is performed. The deformation of the triangular plate belongs to elongated flanging, and the thickness is reduced. The corners of the die are used to push the sheet to gradually flanging. This flanging process is likely to cause the s...

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Problems solved by technology

[0003] The object of the present invention is to provide a mold for forming half-shells of the axle housing and its processing technology, which solves the serious quality problems of uneven disk surface, strain and gnawing caused during the stamping and forming process of the half-shell of the axle housing, and also solves the current process. Problems such as lint, strain, and built-up edge are easy to form at the mouth of the die cavity caused by the die structure; the adjustment of the half-shell forming process is realized by changing the die structure, that is, the forming process of the half-shell is changed from the original longitudinal bending Then the flanging on both sides is changed to the process of gradually forming with the flanging on both sides first, supplemented by longitudinal bending, so that the bending process of the axle housing can be completed under the constraint conditions of the mold, so that the surface of the half shell is not wrinkled or strained. hurt

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