Precise forming process of deep-hole button bit

Abstract

The invention discloses a precise forming process of a deep-hole button bit, which is low in processing cost. The forming process comprises technological processes as follows: material sawing, spheroidizing annealing, shot blasting, phosphating, saponifying, backward extruding, low-temperature annealing, shot blasting, phosphating, saponifying, outer diameter reducing, low-temperature annealing, shot blasting, phosphating, saponifying and head upsetting and forming. The precise forming process has the advantages as follows: with the adoption of a precise cold forging forming method, metal flow lines of parts are continuously and uniformly distributed in the direction of metal flowing, and particularly the inner cavity part which bears impact doesn't have the problem of cut-off flow lines, and the strength is improved greatly; and meanwhile, due to the specific cold hardening effect produced during plastic forming of metal, the whole strength of the parts is improved.

Description

technical field [0001] The invention relates to a metal plastic forming process, in particular to a precision forming process of a deep-hole button bit. Background technique [0002] Ball-tooth drill bit parts are a kind of parts used to install drill bits in engineering machinery. Among the ball-tooth drill bit parts, there is a kind of parts with special-shaped heads, and the ratio H / D of the hole depth to the minimum inner diameter is greater than 3.0. Such as figure 1 The deep hole button bit part shown is one of them, and its structure mainly includes: a deep hole button bit body 1, a head 2 arranged on the deep hole button body 1 and a setting head 2 A number of chip removal grooves on the 3. An inner hole is arranged in the deep hole button bit body 1, and because the inner hole is deep, it cannot be processed by common forging methods. Therefore, the traditional forming method generally adopts machining method for direct drilling or first drilling and then reverse...

AI Technical Summary

Problems solved by technology

Therefore, the traditional forming method generally adopts machining method for direct drilling or first drilling and then reverse extrusion, so the utilization rate of the material is very low, and the life of the forging die is relatively short, and its manufacturing cost is relatively high.

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