Inner-ring rib two-way mold-splitting rotary extrusion forming mold and mold opening method

Abstract

The invention discloses an inner ring rib two-way mold-splitting rotary extrusion forming mold and a mold opening method. According to the inner ring rib two-way mold-splitting rotary extrusion forming mold and the mold opening method, a solid bar is adopted as a blank and used for the forming of a cylindrical component with an inner ring rib, and the internal streamline completeness of the formedcomponent is guaranteed. The inner ring rib two-way mold-splitting rotary extrusion forming mold comprises a mold splitting device, a convex mold I, a convex mold II and a concave mold, wherein two sliding blocks used for the mounting of the convex mold I and the convex mold II are arranged in the mold splitting device; the shapes of the convex mold I and the convex mold II are completely the same; only one side of each of the two convex molds is provided with a groove used for the forming of the inner ring rib; the two convex molds are symmetrically mounted and capable of parallelly slidingalong a symmetric surface, namely a mold splitting surface, in a two-way manner; during the forming process, the blank is driven by the concave mold to rotate and the two concave molds are fed along the axial direction; and meanwhile, the leftward mold splitting motion and the rightward mold splitting motion of the two convex molds are correspondingly used for the forming of an inner rib or a cylinder wall, so that the forming of the cylindrical component with the inner ring rib can be achieved. The inner ring rib two-way mold-splitting rotary extrusion forming mold and the mold opening methodhave the following forming characteristics: the technological process is short and the streamline is complete; a relatively high ratio between the axial height and the radial height of the inner ringrib can be achieved; the material utilization ratio is high; and the resource conservation can be achieved.

Description

technical field [0001] The invention relates to the field of metal plastic forming, in particular to a method for forming a die of a cylindrical part with an inner ring diameter by using a solid blank based on a rotary extrusion process. Background technique [0002] At present, energy saving and environmental protection have become a mainstream in society. As far as mechanical manufacturing is concerned, achieving a shorter production process, achieving higher material utilization, and producing products with better mechanical properties has become the goal that this field is constantly pursuing. In the manufacturing process, the plastic forming of the blank can achieve the effect of refining the grain, reducing internal defects, and strengthening deformation to improve the internal quality, mechanical properties and service life of the formed part. Therefore, plastic forming of formed parts or production of preforms is a way to improve material utilization and mechanical ...

AI Technical Summary

Problems solved by technology

Due to the existence of welds in its components, welding first makes the internal flow incomplete, and then affects the mechanical properties and service life of the entire part

For mechanical processing, the cutting volume is large, the material utilization rate is low, and the processing cycle is long. At the same time, there are defects of incomplete streamlines inside the machined material.

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