Straightening device for large-diameter material of cold header and straightening method

Abstract

The invention discloses a straightening device for the large-diameter material of a cold header and a straightening method. The straightening device comprises a wire rod component, a pressing frame and a support wheel, wherein the wire rod component is matched with the pressing frame; a rolling shaft straightening frame A, a rolling shaft straightening frame B and a roller straightening frame are sequentially arranged between the wire rod component and the support wheel; and the rolling shaft straightening frame A, the rolling shaft straightening frame B, the roller straightening frame and the support wheel are in a coaxial structure. In the invention, an optimal combination method of rolling shaft straightening and roller straightening is adopted to achieve the aim of straightening the multi-directional multi-radian curved form of the material before cold heading, thus, the large-diameter material can be quickly straightened in a short path and the elastic rebound of the heading product can be effectively reduced, and the yield or the yield of secondary processing is improved; in the straightening method, the headed material is placed on the wire rod component in a wire rod form and then pulled to sequentially enter the multi-dimensional rolling shaft straightening frame A and rolling shaft straightening frame B and the roller straightening frame under the restriction and guidance of the pressing frame so as to finish the material straightening; and finally, the material enters the body of the cold header.

Description

technical field [0001] The invention relates to a cold heading machine assembly, in particular to a straightening device and a straightening method for large-diameter materials of the cold heading machine. Background technique [0002] The metal cold heading process is a non-cutting process, and the multi-station automatic cold heading machine processing is a continuous processing mode, so the processed object generally enters the process in the form of a disc. [0003] The specifications of the processed object of the multi-station automatic cold heading machine cover a diameter of 5 to 33 mm, or even close to 40 mm. [0004] The upsetting metal material undergoes hot rolling, rounding, cooling and logistics processes, and the material inevitably produces multi-dimensional stress, which also forms the physical effect of multi-directional and multi-arc bending of the material, and finally forms the initial bending condition as a space bending model. The projection plane is ...

AI Technical Summary

Problems solved by technology

[0006] Cold heading is a process of strong constraint cold forging and extrusion. If the alignment of materials before heading is not sufficient, it will have a negative impact on the quality of high-demand heading parts. The most intuitive thing is that elastic rebound will occur after heading, which will affect the second par

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