Method of forming car steering knuckle forging die cavity

Abstract

The invention relates to a method of forming car steering knuckle forging die cavity. The method comprises the following steps: (1) blanking; (2) splitting material: placing the blank which is heated to over 1100 DEG C on a splitting table for beating to ensure that one end of the blank is pressed to form two branches and the other end is flattened; (3) preforging forming: placing the blank in a preforging mould after splitting material to ensure that the end with branches of the blank covers the two-branch part of the preforging cavity, performing preforging forming to the forge piece; (4) finish forging forming: after the preforging forming, placing the blank on a finish forging mould to perform finish forging forming; and (5) trimming and correcting the blank after the finish forging forming, wherein in the preforging mould and the finish forging mould, the two branches of the cavity both face to the end of the forging die for operation of workers; the other end of the cavity is provided with a lock catch for balancing the displacement force of the forge piece, and the lock catch is a half-surrounded type boss. The method has the following beneficial effects: the forming difficulty of the forge piece is low and the displacement force of the forge piece is reduced, etc; and the method can be widely applied in the forging process field.

Description

technical field [0001] The invention relates to the field of forging technology, in particular to a cavity forming method of a car steering knuckle forging mold. Background technique [0002] see figure 1 and figure 2 , the car steering knuckle forging is composed of the forging body and the branch buds 1 and 2 that form a certain angle (60-100°) with each other, and the branch buds 1, 2 and the forging body have a certain height difference. For this kind of forging, the traditional forging process steps are: blanking → heating → upsetting (removal of scale) → extrusion pre-forging → final forging → trimming → thermal correction → inspection. [0003] When using this process, it is necessary to heat the cylindrical blank to above 1100°C, put it vertically on the upsetting die for upsetting, and remove the scale at the same time. Then put it into the semi-closed extrusion pre-forging mold cavity formed by the upper die 3 and the lower die 4 for pre-forging. In the pre-for...

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Problems solved by technology

Then put it into the semi-closed extrusion pre-forging mold cavity formed by the upper die 3 and the lower die 4 for pre-forging. In the pre-forging process, first place the two branches of the forging die cavity on the horizontal axis (X axis ) and the vertical axis (Y axis), and then extrude the hot metal so that it fills the two branches on the forging die cavity from the bottom of the forging die cavity. In this process, it is very difficult to fill the two branches Large, the proportion of waste products due to dissatisfaction is high; in addition, because there is a certain height difference between the two branch buds and the body of the forging, a large misalignment force will be generated during the molding process, due to the large amount of misalignment The proportion of scrapped forgings is also high

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