Large-diameter die with requirements on positions of inner ring and outer ring and processing method thereof

Abstract

The invention discloses a large-diameter die with the requirements on the positions of an inner ring and an outer ring and a processing method thereof, the die comprises the inner ring, the outer ring and a key slot, wherein the key slot is annularly formed on the periphery of the outer ring, and the die is characterized in that positioning pin holes which are consistent with the requirements on the position degree are respectively increased on the inner ring and the outer ring of the die, the axial lines of the positioning pin holes of the inner ring and the outer ring and the reference are interrelated on the same central plane, and the reference is the central line of the key slot. The processing method of the die comprises the following steps of: processing the outer ring and the inner ring separately, then performing press-fitting, respectively increasing the positioning pin holes which are interrelated with the reference on the inner ring and the outer ring of the die, using a clamp to well set the positions by utilizing the pin holes and further performing the press-fitting, wherein the axial lines of the positioning pin holes of the inner ring and the outer ring and the reference are interrelated on the same central plane and the reference is the central line of the key slot. By adopting the die, the complex shape of an inner cavity and the requirements on the position of the positioning reference of the outer ring can be ensured; simultaneously, the die is low in processing cost and high in processing efficiency, and can overcome the deficiencies in the prior art and meet the requirements of mass production.

Description

technical field [0001] The invention relates to the technical field of molds and mold processing. Background technique [0002] Existing multi-station presses produce auto parts such as flange shafts and universal joints, such as the 2000T multi-station press in Japan. This type of forging is characterized by complex inner cavity and shape and position requirements. The positional accuracy of the keyway of the mold sleeve part can be achieved by adopting the key joint positioning method of the upper and lower molds. For this reason, the keyway of the outer ring of the lower mold of the forming station and the shape of the inner cavity must ensure an accurate positional relationship. Due to the large diameter of the outer ring, if the conventional heat treatment and press-fitting method is used for post-processing, the mold will be heavy, difficult to assemble and disassemble, and difficult to process, and the outer ring will be pressed repeatedly. It is easy to pull afterwa...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of the above traditional processing methods, provide a large-diameter inner and outer ring with a position requirement mold and its processing method, and adopt the processing method of separately processing the outer and inner rings and then press-fitting to ensure that the inner cavity Complicated shape and location requirements of the outer ring positioning datum, low processing cost and high processing efficiency to overcome the deficiencies of the existing technology and meet the requirements of mass production

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