Symmetrical cone rolling parts and symmetrical cone rolling devices

Abstract

The invention discloses a symmetric cone rolling part. Cone revolving roller pressure heads are adopted. The symmetric cone rolling part comprises a rotating pressure body and the roller pressure heads. The rotating pressure body comprises a retainer, a supporting shaft, a shaft sleeve, a shaft pin, a connecting fixture block, a rolling tool body, a spring and a hinged bolt; and each of the roller pressure heads is integrally molded and is arranged in a caulking groove of the rotating pressure body, and the appearance of each of the roller pressure heads is formed by splicing two conical rollers with the same size on a bottom surface. The invention also discloses a symmetric cone rolling device comprising the rolling part. According to the symmetric cone rolling device, the rotating pressure body drives the revolving roller pressure heads nested in the rotating pressure body to roll a metal surface in a reciprocated way at high speed, and a strain strengthening effect is generated on the metal surface, so that the metal surface is strengthened; a cone revolving roller is divided into a supporting surface and a working surface, the supporting surface is used for transferring the positive pressure of the pressure body to the working surface, approximately pure rolling is remained between the working surface and a test piece, and the contact friction between the working surface and the test piece is avoided due to the existence of a reserved gap between the working surface and the pressure body, so that the service life of a die can be effectively prolonged.

Description

technical field [0001] The invention relates to a symmetrical cone rolling part and a symmetrical cone rolling device, belonging to the field of metal material processing. Background technique [0002] The surface rolling strengthening of metal materials means that a certain thickness of hardened and deformed layer is formed on the surface of the material matrix, and the hardness and wear resistance of the metal surface can be effectively improved. Surface rolling strengthening technology has many advantages: rolling strengthening changes the physical state of the surface of metal materials without changing the chemical composition of the material; the tools and processes used for surface rolling are relatively simple, and the processing efficiency is high; The cutting process will not produce waste chips and waste liquid during the process, and has less pollution to the environment, which is in line with the development concept of "green manufacturing". This technology has...

AI Technical Summary

Problems solved by technology

But the disadvantage is that the rolling times are higher and the service life of the ball is shorter

[0004] In addition, South China University of Technology adopts the method of rotary pressing cylindrical roller rolling to obtain surface structure refinement and strengthening. This method is a strengthening method of surface rotary rolling and has achieved good results. For the plate, due to the uneven linear velocity relative to the plate in the direction of the roller generatrix, the force of the roller torsional deformation is inconsistent, so the loss of the mold is relatively large

[0005] It can be seen that the above rolling methods are mainly limited to the processing of shafts and sleeve parts. For the efficient and economical rolling of large flat surfaces and the relative motion of blanks, the current research is not detailed enough.

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