Modular mold for gear precision forging forming and application method thereof

Abstract

The invention relates to a modular mold for gear precision forging forming and an application method thereof. The modular mold includes a lower mold fixed to a forging machine base and an upper mold fixedly connected with the lower end of a forging machine punch, the upper end face of the lower mold is provided with a lower mold inner boss located on the center and a ring-shaped lower mold outer boss, the lower end face of the upper mold is provided with an upper mold inner boss corresponding to the lower mold inner boss and an upper mold outer boss corresponding to the lower mold outer boss,an outer mold base board sleeves the lower mold, an air cushion is arranged on the lower end face of the outer mold base board, a circular-ring-shaped tooth form outer mold is fixedly connected with the upper end face of the outer mold base plate, outer mold inner teeth are arranged on an inner ring of the tooth form outer mold, chamfers are arranged at the lower ends of the outer mold inner teeth, and cutting blades are arranged on the chamfers. The outer diameter of the upper mold is greater than the inner diameter of the tooth form outer mold, and the altitude difference of the lower end ofthe outer mold inner teeth and the upper mold outer boss is greater than the thickness of blank. According to the modular mold and the application method, the forging efficiency is high, a tooth formis fully filled, and the processed tooth form is high in strength, and long in life.

Description

Technical field [0001] The invention relates to the field of forging technology, in particular to the field of gear forging, and specifically refers to a combined die for gear precision forging and a method of use thereof. Background technique [0002] At present, most of the domestic gear production still relies on traditional mechanical cutting methods, and only a small part is formed by precision forging. Traditional mechanical cutting methods have disadvantages such as low tooth profile strength and low processing efficiency. Gear precision forging improves gear performance, high production efficiency, energy saving and environmental protection, but due to higher technical barriers, such as insufficient tooth profile filling and short mold life , Gear blanks are difficult to mold, etc., and it is difficult to popularize and apply gear precision molding technology. [0003] At present, many gears are composed of an inner ring, an outer ring, and a connecting plate connecting th...

AI Technical Summary

Problems solved by technology

The traditional mechanical cutting method has disadvantages such as low tooth profile strength and low processing efficiency. Gear precision forging improves gear performance, high production efficiency, energy saving and environmental protection, but due to high technical barriers, such as insufficient tooth profile filling and short mold life , gear blank out of the mold is difficult, etc., gear precision forming technology is difficult to be popularized and applied

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