Special blade for roughly processing large axial forge piece with V-shaped tool noses

Abstract

The invention discloses a special blade for roughly processing a large axial forge piece with V-shaped tool noses, and belongs to the technical field of tools for turning, in order to solve the problems that during the course of roughly milling a hydrogenation shell ring of an ultra large axial forge piece, fracture failure is caused due to the fact that a tool bears load-variable and frequency-variable mechanical shock, and during the course of cutting, the tool is bonded with chips, and chip cutting and chip breaking are difficult due to the fact that a heat dissipation condition is poor and a tool body is softened resulting from high temperature. Four negative chamfered cutting edges are processed at four external rims of a blade rake face; the V-shaped tool noses are processed at connection parts between every two adjacent negative chamfered cutting edges; trapezoid chip breaker grooves are formed in the blade rake face; four rhombic bulges are arranged on the blade rake face, and are close to the four V-shaped tool noses; a tightening screw counter bore is processed in a bulge platform, and positioned in a geometric center; a circular heat-dissipation groove is processed at the periphery of the tightening screw counter bore in the bulge platform; and diagonal heat-dissipation grooves are processed in four diagonal lines of the bulge platform. The special blade is used for large knifing turning in rough processing of a large forge piece blank.

Description

technical field [0001] The invention belongs to the technical field of cutting tools for turning, and in particular relates to a special blade for rough machining large shaft forgings with a V-shaped tip. Background technique [0002] With the development of my country's economy, the demand for large-scale high-end equipment in clean energy (nuclear power, hydropower), aerospace, transportation and other fields is increasing. However, the manufacturing level of my country's large-scale equipment restricts the localization of China's large-scale high-end equipment. The materials of large equipment parts are generally difficult to process, and the processing is very difficult, and during the cutting process, the cutting depth a p Up to about 30mm, the cutting force is very large, and the tool is seriously damaged. The localization and serialization of heavy-duty cutting tools is an urgent problem to be solved in my country's equipment manufacturing industry. For example, the...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a special blade for rough machining of large shaft forgings with a V-shaped tip, aiming at fracture failure caused by the cutting tool being subjected to variable load and variable frequency mechanical impact during the ultra-large shaft forging hydrogenation cylinder cutting process, and During the cutting process, the heat dissipation conditions are poor, and the high temperature softens the tool body, resulting in the problem of tool-chip bonding and difficult chip breaking

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