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Double-head cutting tool in mechanical processing

A cutting tool and machining technology, which is applied in the field of metal cutting tools, can solve problems such as the inability to solve the interrelated problems of tool tips, cutting chatter, and increased wear of tool tips.

Inactive Publication Date: 2006-11-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these measures often have a variety of restrictive conditions in practical applications, such as increasing the corner radius of the tool nose or reducing the main deflection angle and the secondary deflection angle can increase the strength of the tool tip, but it may be due to the increase in the back engagement. Vibration is caused; the tool with the transition edge may cause cutting chatter due to the increase in the length of the cutting edge involved in cutting; the tool with the wiper edge is only suitable for occasions where the amount of back cutting is small, etc.
It is also worth noting that none of the existing measures can solve the problem of the correlation between the wear of the tool tip and the wear of other parts (in many cases, the wear of the main cutting edge of the tool promotes the aggravation of the wear of the tool tip)

Method used

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  • Double-head cutting tool in mechanical processing
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  • Double-head cutting tool in mechanical processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: The outer circle of the turning shaft is turned by a high-speed steel turning tool.

[0032] The workpiece material is 45, and the concave arc is processed by EDM at the original tool tip to form tool tip 1 and tool tip 2. The straight line distance between the two tool tips is 0.8mm, and the arc radius of the concave arc is 0.5. Tip 2 for fine grinding. In the direction parallel to the normal of the workpiece surface to be processed and pointing to the surface to be processed, the tool tip 2 has a protrusion of 0.15mm compared with the tool tip 1, and the back engagement is 1.2mm. The tool tip 1 participates in rough machining, and the tool tip 2 are responsible for finishing, and they are cut at the same time. During cutting, the tip 2 remains in good condition, resulting in a high-quality machined surface.

Embodiment 2

[0033] Embodiment 2: Carbide inserts are welded to the outer circle of the turning tool turning shaft.

[0034] The material of the workpiece is 40Cr, the material of the carbide blade is YT15, and the concave arc is machined by EDM at the original tip to form the tip 1 and the tip 2. The linear distance between the two tip is 1.0mm, and the concave arc is The radius of the arc is 0.6, and the tool tip 2 is ground. In the direction parallel to the normal of the workpiece surface to be processed and pointing to the surface to be processed, the tool tip 2 has a protrusion of 0.3mm compared with the tool tip 1, and the back engagement is 2mm. The tool tip 1 participates in rough machining, and the tool tip 2 In charge of finishing. The ground tip 2 remains in good condition during cutting, resulting in a high-quality machined surface.

Embodiment 3

[0035] Embodiment 3: Monitoring of the wear state of the cemented carbide blade welding turning tool.

[0036] The outer circle of the turning shaft, the workpiece material is 40Cr, and the carbide insert material is YT15. The concave arc is machined by EDM at the original tool tip to form tool tip 1 and tool tip 2. The straight-line distance between the two tool tips is 0.9mm , in the direction parallel to the normal of the workpiece surface to be processed and pointing to the surface to be processed, the tool tip 2 has an indentation of 0.1 mm compared with the tool tip 1, and the back engagement is 1.8 mm. During cutting, tool nose 1 works alone, and tool nose 2 does not participate in cutting. As the tool wears, the tool tip 1 moves backward until the tool tip 2 starts to participate in cutting, and two chips, one thick and one thin, appear, and the cutting force also changes significantly, reminding to stop and change the tool. After measurement, the wear value VN of the...

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Abstract

The invention relates to a metal cutter with new knifepoint structure, which is characterized in two knifepoints. Wherein, said dual-knifepoint structure can break the relation between the abrasions of main blade and the knifepoint 2 that machining finely, to avoid the effect of main blade abrasion; and the knifepoint 2 has lower force and thermal load, to improve the surface quality. The invention can be used in variable cutters, as integrated high-speed steel blade, welded right alloy cutter, etc.

Description

technical field [0001] The invention relates to a metal cutting tool with a new tip type in mechanical processing, and belongs to the technical field of mechanical manufacturing in mechanical engineering. Background technique [0002] In terms of machining technology, although many new processing methods have emerged in the past few decades, cutting is still the most widely used and most important machining technology. [0003] Tool technology occupies an important position in cutting processing technology. There are many kinds of metal cutting tools in machining, such as turning tools, milling cutters, planers, drills, boring tools, broaches, etc. There are various types, such as integral High-speed steel cutting tools, welded carbide blade cutting tools, indexable non-regrinding blade cutting tools, etc. The intersection of the main cutting edge and the minor cutting edge of various tools forms the tip of the tool. [0004] The working environment at the tip of the knife...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/00B23B27/10
Inventor 王庆明
Owner EAST CHINA UNIV OF SCI & TECH
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