Cold extrusion mold for output shafts and preparation method thereof

Abstract

The invention discloses a cold extrusion mold for output shafts. The mold is composed of an upper die and a lower die which are mutually matched, wherein the lower die comprises a lower die core and a lower die fixed sleeve, the center of the top of a main body of the lower die core is provided with a shaft head cavity with an upward opening, and the shaft head cavity is connected with a multistage ladder-like lower die cavity penetrating to the bottom of the main body; an inner ring of the lower die fixed sleeve is sleeved on the outer peripheral surface of the lower die core, and an outer ring of the lower die fixed sleeve is sleeved on the upper part of a lower die jacket; and a lower die base is sleeved on the lower part of the lower die jacket, the center of the lower die base is provided with a lower die knockout-pin cavity communicated with the lower die cavity, the bottom of the lower die base is contracted so as to form a cascade ring, and the cascade ring is nested into a lower die fixed seat. According to the scheme, the machining efficiency is high, the manufacturing cost of products is low, no cutting is generated, and no material loss is caused; and a forging die is abraded slowly, and the size precision of products is easily guaranteed.

Description

technical field [0001] The invention relates to the manufacture of hardware parts, in particular to a cold extrusion die for an output shaft of I001 / 1003063905 and a preparation method thereof. Background technique [0002] The traditional I001 / 1003063905 output shaft cold extrusion billet has a simple structure and low cost, but it is not firm and flexible during use, and the concentricity and product accuracy are not up to the requirements. The I001 / 1003063905 output shaft cold extrusion billet has a special structure and high structural requirements. The current manufacturing process of the I001 / 1003063905 output shaft cold extrusion billet is produced by a machining center. The existing process flow is: cut the material Sent to the machining center for turning, milling instrument processing, and finally product packaging. However, the machining equipment is expensive, and the processing efficiency is low, the concentricity cannot be guaranteed, and the product accuracy ...

AI Technical Summary

Problems solved by technology

However, the machining equipment is expensive, and the processing efficiency is low, the concentricity cannot be guaranteed, and the product accuracy cannot meet the requirements. At the same time, due to the use of instrument processing, more waste will be generated, and the metal flow line will be destroyed, resulting in low product strength.

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