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A finishing turning tool

A technology of turning tools and blades, which is applied in metal processing equipment, tools for lathes, cutting blades, etc., can solve the problems of difficult cutting and roughness on the surface of the workpiece, reduce the difficulty and surface roughness of the workpiece, and reduce the number of replacements The effect of increasing the number of times and processing efficiency

Active Publication Date: 2020-05-19
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The turning tool provided by the invention can solve the problem that the surface of the workpiece is difficult to cut to a qualified roughness when the finishing allowance is less than 0.05mm

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0018] (1) Select YT15 material for fine turning outer circle turning tool, the main cutting edge R1 and auxiliary cutting edge R2 of special-shaped insert 2 choose R47mm arc, the edge length is 7mm, the main flank a chooses R6mm arc surface, and the auxiliary cutting edge Select the R8mm arc surface for the cutter face b, form a circular arc edge inclined to the main flank at the intersection of the main flank and the auxiliary flank, and place the contour block 3 on the turning tool body 1 , and use an external measuring tool to measure whether the centerline of the arc edge is 0.03-0.05mm higher than the axis of rotation of the workpiece. If the center height is inaccurate, continuously adjust the height of the contour block 3 until the center line of the arc edge 0.03mm higher than the axis of rotation of the workpiece.

[0019] (2) The outer circle diameter D 外 The medium carbon steel material with a length of 35mm and a length of 60mm is clamped on a CNC lathe, and the ...

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Abstract

The invention provides a finish machining turning tool which comprises a turning tool body and a special-shaped turning insert; and each of a main cutting blade and an auxiliary cutting blade of the special-shaped turning insert is an arc with R being 40-50mm and has the blade length of 8-10mm, a main back cutting surface is an arch-shaped surface with R being 6-7mm, an auxiliary back cutting surface is an arch-shaped surface with R being 6.5-8mm, the intersection of the main back cutting surface and the auxiliary back cutting surface of the special-shaped turning insert is an arch-shaped edge, and the edge participates to turning as a cutting blade in the turning process. By adopting the finish machining turning tool provided by the invention, the stress condition of a cutter and the discharge direction of cuttings when the cutting depth is smaller than 0.05mm during finish machining turning can be effectively improved, and the problems of vibration, extrusion cutting and scratching of a processed surface with the cuttings are solved; and sleeking processing is performed while turning is performed, and the difficulty of finish machining turning and the surface roughness of a workpiece are lowered.

Description

technical field [0001] The invention relates to the technical field of machining tools, in particular to a finishing turning tool. Background technique [0002] Turning tools are necessary tools for turning, including outer circle turning tools, inner hole turning tools, grooving turning tools, thread turning tools, etc. The choice of turning tools directly affects the effect of turning. Turning includes rough turning and finishing There are two parts of turning. The purpose of finishing turning is to remove the finishing allowance while ensuring the dimensional accuracy and surface roughness of the workpiece. Therefore, finishing turning directly affects whether the workpiece to be processed can meet the requirements of the drawing and use requirements. However, in finishing turning Due to the influence of tools, fixtures, machine tools, vibration, temperature and many other factors in the process, it is difficult to ensure the dimensional accuracy and surface roughness of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/18
CPCB23B27/005B23B27/18B23B2200/123
Inventor 徐国胜董庆运李杰迟涛张翔宇
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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