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

A rough machining and blade technology, which is applied in the field of special blades for rough machining of large shaft forgings with V-shaped tool nose, can solve the problems of tool breakage failure, difficulty in chip breaking, knife-chip bonding, etc., and achieve accelerated breaking and enhanced breaking. chip performance, the effect of reducing cutting heat

Inactive Publication Date: 2013-06-12
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

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specific Embodiment approach 1

[0019] Specific implementation mode one: as Figure 1-Figure 5 As shown, the special blade for rough machining of large-scale shaft forgings with V-shaped tip in this embodiment, the shape of the blade is a square truss shape, the area of ​​the bottom surface of the blade is smaller than the area of ​​the rake face of the blade, and the four outer edges of the rake face of the blade Four negative chamfering cutting edges 4 are respectively processed on the edge, and a V-shaped tool tip 7 is processed at the intersection of each adjacent two negative chamfering cutting edges 4 of the blade, and the sharp corner of the V-shaped tool tip 7 is processed with a The angle bisector of this V-shaped knife point 7 is perpendicular to the facade, and the middle part of the blade rake face is provided with a raised platform 5 in the shape of a square truss, and the area of ​​the raised platform 5 front surface is less than the area of ​​the raised platform 5 bottom surfaces, and the blade...

specific Embodiment approach 2

[0020] Specific implementation mode two: combination Figure 4 Illustrate, on the bottom surface of the blade of the present embodiment, a square cooling groove 9 is arranged on the outside of the outer periphery of the fastening screw counterbore 6, and the bottom surface of the square cooling groove 9 is located on the outer periphery of the fastening screw counterbore 6. The center line heat dissipation groove 15 communicated with the square heat dissipation groove 9 is processed between the middle part of each outer edge of the blade bottom surface and the middle part of the groove edge corresponding to the square heat dissipation groove 9 . The undisclosed technical features in this embodiment are the same as those in the first embodiment.

specific Embodiment approach 3

[0021] Specific implementation mode three: combination figure 1 and Figure 4 It is explained that, on the four flanks 16 of the insert in this embodiment, the concave curved surface 11 is processed near the centerline cooling groove 15 located on the flanks 16 . The undisclosed technical features in this embodiment are the same as those in the second embodiment.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/00B23B27/22
Inventor 程耀楠刘利王海婷何耿煌胡强孙守慧
Owner HARBIN UNIV OF SCI & TECH
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