Tool wear in laser ultrasonically assisted cutting cemented carbide and its effect on surface quality

ZHANG Chang-juan; JIAO Feng; ZHAO Bo; NIU Ying

doi:10.3788/OPE.20162406.1413

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Tool wear in laser ultrasonically assisted cutting cemented carbide and its effect on surface quality

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- Tool wear in laser ultrasonically assisted cutting cemented carbide and its effect on surface quality
- Optics and Precision Engineering Vol. 24, Issue 6, Pages: 1413-1423(2016)
- 作者机构：
  
  河南理工大学机械与动力工程学院,河南焦作,454000
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162406.1413
  CLC： TG665;TG506.9
- Received：10 February 2016，
  
  Revised：15 March 2016，
  
  Published：25 June 2016
- 稿件说明：
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张昌娟, 焦锋, 赵波等. 激光超声复合切削硬质合金的刀具磨损及其对工件表面质量的影响[J]. 光学精密工程, 2016,24(6): 1413-1423

ZHANG Chang-juan, JIAO Feng, ZHAO Bo etc. Tool wear in laser ultrasonically assisted cutting cemented carbide and its effect on surface quality[J]. Editorial Office of Optics and Precision Engineering, 2016,24(6): 1413-1423
张昌娟, 焦锋, 赵波等. 激光超声复合切削硬质合金的刀具磨损及其对工件表面质量的影响[J]. 光学精密工程, 2016,24(6): 1413-1423 DOI： 10.3788/OPE.20162406.1413.

ZHANG Chang-juan, JIAO Feng, ZHAO Bo etc. Tool wear in laser ultrasonically assisted cutting cemented carbide and its effect on surface quality[J]. Editorial Office of Optics and Precision Engineering, 2016,24(6): 1413-1423 DOI： 10.3788/OPE.20162406.1413.

摘要

基于激光加热辅助切削和超声椭圆振动切削提出了激光超声复合切削加工工艺。采用聚晶立方氮化硼（PCBN）刀具对YG10硬质合金进行了常规切削，超声椭圆振动切削，激光加热辅助切削和激光超声复合切削对比试验。检测了刀具磨损量、刀具磨损形貌、工件表面粗糙度以及工件表面形貌，并通过扫描电镜（SEM）对刀具磨损区域进行了能谱分析，同时研究了激光超声复合切削硬质合金时PCBN刀具的磨损及其对工件表面质量的影响。最后，与常规切削、超声振动切削及激光加热辅助切削进行了对比试验。结果表明：激光超声复合切削时刀具使用寿命显著增加，加工后的工件表面粗糙度平均值分别降低了79%、60%和64%，且工件表面更加平整光滑。激光超声复合切削硬质合金时，PCBN刀具的前刀面磨损表现为平滑且均匀的月牙洼磨损，后刀面磨损表现为较窄的三角形磨损带和较浅的凹坑和划痕；刀具的失效机理主要为黏接磨损、氧化磨损和磨粒磨损的综合作用。

Abstract

A laser ultrasonically assisted machining was proposed based on laser heating assisted machining and ultrasonically elliptical vibration machining. A series of comparison experiments were conducted by conventional cutting

ultrasonically elliptical vibration cutting

laser assisted cutting and laser ultrasonically assisted cutting for YG10 cemented carbide with Polycrystalline Cubic Boron Nitride(PCBN) tools. The tool wear mechanism and its effect on surface quality of a workpiece were discussed by detecting the tool wear conditions

the surface morphology and surface roughness of the workpiece and by analyzing the energy spectrum of worn areas with a Scanning Electron Microscopy (SEM). The comparison was carried out with conventional cutting

ultrasonically elliptical vibration cutting and laser assisted cutting. The results show that the flank wear of PCBN tool obtained by laser ultrasonically assisted cutting is reduced

and the average surface roughnesses of the workpieces are reduced by almost 79%

60% and 64% respectively. Therefore

the tool life is obviously lengthened and the workpiece surface is smoother by laser ultrasonically assisted cutting. In laser ultrasonically assisted machining cemented carbide

the wear on rake face is characterized by the smooth and uniform crater

the flank face has a narrow triangular wear land

shallow pits and scratches

and PCBN tool failure mechanisms are the synergistic interaction of adhesive wear

oxidation wear and abrasive wear.

关键词

Keywords

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