A method for sizing and rolling forming of axially inner ribbed cylindrical parts

Abstract

The invention belongs to the technical field related to the processing of axial inner rib cylindrical parts, and discloses a sizing and rolling forming method of axial inner rib cylindrical parts. The method includes the following steps: (1) First, provide N The driving roll, the middle part of the driving roll is provided with an annular spacing groove; afterward, the ring-shaped blank to be formed is placed in the corresponding N-1 spacing grooves of the driving rolling roller, and then the blank is Respectively housed in the limiting grooves of the N driving rolls; (2) placing the axial grooved core roll in the through hole formed by the blank; the axial grooved core roll is provided with a groove (3) The N active rolls rotate actively in the same direction at the same speed to drive the billet to rotate, and the axially grooved core roll rotates under the drive of the billet until the axial inner rib cylindrical shape is completed The forming of the piece. The invention improves the quality and reduces the cost.

Description

technical field [0001] The invention belongs to the technical field related to the processing of axially inner-rib cylindrical parts, and more particularly relates to a method for sizing and rolling forming of axially inner-rib cylindrical parts. Background technique [0002] With the rapid development of the manufacturing industry, the requirements for the environmental protection and production efficiency of the manufacturing process are getting higher and higher. How to improve the production efficiency and material utilization rate while ensuring the dimensional accuracy and mechanical properties of the produced parts has become a major research hotspot. . [0003] For cylindrical parts with internal ribs, they are often used to drive rotating parts. The inner ribs cooperate with internal shaft parts to complete the transmission of force and torque and increase the flexibility of the component structure. However, the particularity of the structure of such parts, The pro...

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Problems solved by technology

[0003] For cylindrical parts with internal ribs, they are often used to drive rotating parts. The inner ribs cooperate with internal shaft parts to complete the transmission of force and torque and increase the flexibility of the component structure. However, the particularity of the structure of such parts, The processing technology is often complicated and it is difficult to ensure the overall quality, which not only leads to low material utilization rate, but also has many processing procedures and low efficiency, so the manufacturing process needs to be improved urgently

[0004] Regarding the forming methods of cylindrical parts with axial inner ribs, welding, spinning and extrusion methods are mostly used. Traditional welding methods are difficult to guarantee the overall quality and performance of parts, and the completion of multiple steps is low in efficiency; such as the patent CN201810173053.1 discloses a multi-functional complex vertical and horizontal internal rib cylindrical component spinning forming mandrel device and method, which can be used for spinning components with horizontal internal ribs, axial internal ribs and vertical and horizontal complex internal ribs. Spinning forming is to change the outer diameter of the billet, the quality of the outer surface is difficult to guarantee, and the structure of the mandrel is complex, and the disassembly efficiency is low; another example is the patent CN201810287671.9 which discloses a magnesium alloy ribbed cylindrical part with strong plastic deformation extrusion forming The device and method adopt plastic extrusion to form cylindrical parts with axial inner ribs. The extrusion die has a complex structure, and one die can only form parts of one size. The cost is high, and the extrusion process requires a high tonnage of equipment; Traditional rolling cannot limit the outer diameter, and the outer diameter of the controlled parts depends on theoretical calculations, and due to the instability of the rolling process, the accuracy of the outer diameter is not high

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