Method for manufacturing an insert pocket of a cutter body

Abstract

A method for manufacturing an insert pocket of a cutter body is disclosed. First, the insert pocket of the cutter body a rough milling process. Then, the insert pocket is forged using a forging tool having a shape that generally conforms to the shape of the insert pocket. Then, the insert pocket undergoes a finish milling process to qualify the pocket geometry without removing the majority of the forge-enhanced pocket material. The insert pocket can be optionally heated prior to the forging step. The grain orientation of the inset pocket is compressed by the forging process to increase the impact and fatigue resistance of the insert pocket.

Description

BACKGROUND OF THE INVENTION[0001]Forging is a manufacturing process involving the shaping of metal using localized compressive forces. Forging is often classified according to the temperature at which it is performed: “cold,”“warm,” or “hot” forging. Forged parts can range in weight from less than a kilogram to 580 metric tons. Forged parts usually require further processing to achieve a finished part.[0002]Forging is one of the oldest known metalworking processes. Traditionally, forging was performed by a smith using hammer and anvil, and though the use of water power in the production and working of iron dates to the 12th century, the hammer and anvil are not obsolete. The smithy or forge has evolved over centuries to become a facility with engineered processes, production equipment, tooling, raw materials and products to meet the demands of modern industry.[0003]In modern times, industrial forging is done either with presses or with hammers powered by compressed air, electricity,...

AI Technical Summary

Problems solved by technology

Some steam hammers remain in use, but they became obsolete with the availability of the other, more convenient, power sources.

Hot forging prevents the work hardening that would result from cold forging, which would increase the difficulty of performing secondary machining operations on the piece.

Production forging involves significant capital expenditure for machinery, tooling, facilities and personnel.

Owing to the massiveness of large forging hammers and presses and the parts they can produce, as well as the dangers inherent in working with hot metal, a special building is frequently required to house the operation.

Due to the interrupted-cut nature of a metalworking machining operation, the pockets of a tool holder are subjected to impact and fatigue loading.

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