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Research on Behavior of Crater Wear of Hob in Dry Hobbing

干滚滚刀月牙洼磨损行为研究

基本信息

批准号：
12650118
负责人：
MATSUOKA Hironori
金额：
$ 2.11万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650118/
关键词：
Cutting Gear Dry Hobbing Fly Tool Coated Tool Crater Wear Flank Wear Finished Surface Roughness ホブ条数およびホブ送り工具寿命

项目摘要

It is well known that cutting oils are used in hobbing with high-speed steel (HSS) hob. Recently, however, bobbing without cutting oils (dry hobbing) with HSS hob has become a center of attraction, because of prevention of environmental pollution and safety for the operator, as well as reduction of costs for cutting oil and its waste disposal. The behavior of crater wear on the face using different kinds of HSS hob materials coated with TIN and (Al, Ti)N in dry hobbing was mainly investigated in this research. Experiments were carried out using a fly tool on the milling machine. A summary of the research results is shown below : (1) The crater wear obtained with in dry cutting is smaller than that with in wet cutting (using a fluid containing sulfurized fatty oil), which was suggested that the deposited metal may affected on the crater wear. (2)From cutting speeds of 47 m/min to 86 m/min, the crater wear of corresponding to SKH 55 and M 34 hob materials coated with (Al, Ti)N increases with an increase in cutting speed. At a cutting speed of 117 m/min, it decreased remarkably. (3)With all of the hob materials tested, the crater wear decreases with increasing in number of threads and hob feed, that is, the condition of 3-thread hob and hob feed of 3.0 mm/rev is useful for decreasing it. (4)When using the fully coated tools, it was suggested that the crater wear mechanism is due to the plastic deformation of the coating film, which causes its delamination, after appearing the substrate, the crater wear increases by the abrasive action with the cutting chips. (5)Among the hob materials tested, the corresponding to SKH55 + (Al, Ti)N coated tool is suitable for dry hobbing.

众所周知，切削油用于高速钢（HSS）滚刀的滚齿加工。然而，最近，由于防止环境污染和操作者的安全性，以及减少切削油及其废物处理的成本，使用HSS滚刀的无切削油滚齿（干式滚齿）已成为吸引人的中心。本文主要研究了TiN和（Al，Ti）N涂层高速钢滚刀材料在干式滚齿时的弧坑磨损行为。在铣床上使用飞刀进行了实验。研究结果表明：（1）干切削时的凹坑磨损小于湿切削时的凹坑磨损，说明熔敷金属对凹坑磨损有一定的影响。（2）在47 ~ 86 m/min的切削速度范围内，（Al，Ti）N涂层SKH 55和M 34滚刀材料的月牙洼磨损量随切削速度的增加而增加。当切削速度为117 m/min时，切削速度明显降低。（3）在所有试验的滚刀材料中，月牙洼磨损随滚刀螺纹数和滚刀进给量的增加而减小，即3螺纹滚刀和滚刀进给量为3.0mm/rev的条件有利于降低月牙洼磨损。（4）当使用全涂层刀具时，月牙洼磨损的机理是涂层膜的塑性变形导致其分层。在出现基体后，由于与切屑的研磨作用，凹坑磨损增加。（5）在所试验的滚刀材料中，SKH 55+（Al，Ti）N涂层刀具适合于干式滚齿。