Special efficient turning tool for hogging ultra-large axial forgings

A super-large, waste machining technology, applied in the direction of tools for lathes, metal processing equipment, turning equipment, etc., can solve the problems of low tool service life, restricted production efficiency, tool breakage failure, etc., to improve processing efficiency, increase Effective heat dissipation area and the effect of improving impact resistance

Inactive Publication Date: 2011-07-13
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tool life is very low, which seriously restricts the improvement of production efficiency
[0003] During the processing of large-scale shaft forgings, the cutting tool is subjected to mechanical impact w

Method used

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  • Special efficient turning tool for hogging ultra-large axial forgings
  • Special efficient turning tool for hogging ultra-large axial forgings
  • Special efficient turning tool for hogging ultra-large axial forgings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A special high-efficiency turning tool for super-large shaft forgings, which consists of: a turning tool body 1, the center of the turning tool body has a fastening screw hole 5, and the turning tool body is a regular pentagon with five a cutting edge, the turning tool body has a rake face 2 and a bottom surface 3, the turning tool body cutting surface 13 has a group of negative chamfer cutting edges 4, and the turning tool body rake face has in turn Ellipsoidal protrusions 6, arrow-shaped protrusions 7, wave-shaped chip guide walls 8, chip pockets 9, arc transition edges 10;

Embodiment 2

[0026] The special high-efficiency turning tool for machining super large shaft forgings described in Example 1, the cutting edge is linear, the thickness of the turning tool body is 9mm, and a relief angle of about 7°-9° is adopted, 6 °--A rake angle of about 7°, the edge inclination angle is 0°; the rake face has a three-dimensional chip breaker, and the chip pocket has an ellipsoidal protrusion near the cutting edge; the chip pocket The inner chip guide wall is a wave-shaped structure; the corner of the chip breaker, that is, the transition edge, has an arrow-shaped protrusion; the bottom of the turning tool body has a cooling groove; the turning tool body is connected with the The turning tool holder is fixed.

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Abstract

The invention discloses a special efficient turning tool for hogging ultra-large axial forgings. The hogging process of the hydrogenated cylindrical shells of the ultra-large axial forgings has the problems that a cutter cracks and fails under variable-load and variable-frequency mechanical impact, the radiating conditions in the cutting process are weak, the cutter and scraps are stuck together as the cutter body is softened by high temperature, and the like. The special efficient turning tool for hogging ultra-large axial forgings comprises a turning tool body (1), wherein a fastening screw hole (5) is arranged at the very center of the turning tool body; the turning tool body is of a regular pentagon shape, has five cutting edges and is provided with a front tool surface (2) and a bottom surface (3); a cutting surface (13) of the turning tool body is provided with a group of negative chamfer cutting edges (4); the front tool surface of the turning tool body is sequentially provided with a ellipsoidal bulge (6), an arrow-shaped bulge (7), a wave-shaped scraps guiding wall (8), a scraps containing groove (9) and an arc transition edge (10); and the bottom surface of the turning tool body is provided with a tool bottom radiating groove (11) and a tool body supporting structure (12). The special efficient turning tool disclosed by the invention is used as a turning tool for hogging the ultra-large axial forgings on a heavy-duty lathe.

Description

Technical field: [0001] The invention relates to a cutting tool in the field of mechanical processing, in particular to a high-efficiency turning tool specially used for processing super-large shaft forgings. Background technique: [0002] The large-scale hydrogenation cylinder blank is directly forged, and the weight can reach more than 400 tons. There are many forging defects on the surface to be processed that ordinary forgings do not have, such as: forging shovels, scale, forging cracks and metal coverings, etc.; The materials used in the hydrogen cylinder section are quite special and have strong high temperature toughness. At present, the cutting tool used in the processing of hydrogenation cylinders is a single-edged welded turning tool. During the processing, the cutting amount caused by forging defects changes greatly. The mechanical impact on the tool is constantly changing, and the cutting force can reach up to 10 The cutting tool is easily broken due to impact, ...

Claims

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Application Information

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IPC IPC(8): B23B27/00B23B27/10B23B27/22
Inventor 刘献礼何耿煌严复钢翟元盛程耀楠张吉军于忠光
Owner HARBIN UNIV OF SCI & TECH
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