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Reaseach for Development of Intelligent Finish Gear Rolling System by Screw-Shaped Tool

螺旋刀具智能精滚齿系统开发研究

基本信息

批准号：
08650146
负责人：
OZAKI Tatsuo
金额：
$ 1.6万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650146/
关键词：
Gear Finish Gear rolling Screw-Shaped Tool Pressure Angle Error Amount of Stock Rolled Rate of Stock Rolled Database Modified Tooth Profile 圧力角誤差

项目摘要

Finish gear rolling experiments of spur gears with a standard tooth profile and with the pressure angle errors are done using the screw-shaped tool with a standard tooth profile. The values of pressure angle error are set to 0.12 degree. The involute grinder is used to produce the work. The tooth profiles of the work and the distribution of the amount of the stock rolled are carefully examined before and after rolling. As the amount of the rolling stock increases, the pressure angle errors of the works lessen, while the tooth profile becomes concave. In order to develop the intelligent finish gear rolling system by screw-shaped tool, firstly the database of the rate of stock rolled are constructed based on the experimental results obtained above. Secondly, a simple calculation method is also proposed to predict the tooth profile of the work after rolling. Thirdly, an expert systen to design the screw-shped tool with the modified tooth profile is developed by combining the database and the simple calculation method. Two modified tooth profile of the screw-shaped tool are designed using this expert systm and actually produced. The pressure angle errors are improved and the tendency to produce the concave rolled tooth profiles are suppressed by the new tools. The validity and the usefulness of the proposed calculation method are confirmed. The nunerical simulation model using the FEM commnercial package ABAQUS is made to decide the rate of the stock rolled theoretically. The tooth profiles of the rolled spur gears are analyzed by this model under the two dimensional plane-strain condition. The theoretical tooth profiles are compared with the experimantally rolled tooth profiles and this deformation model is Proved to be usefhl to calculate the amount of the stock rolled and the ehstic deformation of the work and the tool during rolling.

利用标准齿形的螺杆刀具，对标准齿形的直齿圆柱齿轮进行了压力角误差的精加工实验。压力角误差值设置为0.12度。渐开线磨床是用来加工这件作品的。在轧制前后，仔细检查被轧件的齿形和轧制量的分布。随着铁道车辆数量的增加，工作面的压力角误差减小，而齿形变为凹面。为了开发螺旋刀智能精轧系统，首先在以上实验结果的基础上建立了精轧速度数据库。其次，还提出了一种简单的计算方法来预测轧后工件的齿形。第三，将数据库与简易计算方法相结合，开发了修形螺纹刀设计专家系统。利用该专家系统设计了两种修形后的螺杆刀具齿形，并进行了实际加工。新刀具改善了压力角误差，抑制了凹滚齿轮廓线的产生。验证了所提出的计算方法的有效性和实用性。利用有限元商业软件ABAQUS建立了数值模拟模型，从理论上确定了轧制率。利用该模型对滚压直齿圆柱齿轮在二维平面应变条件下的齿形进行了分析。将理论齿形与实验齿形进行了比较，证明该变形模型可用于计算轧制过程中的轧制量以及工件和刀具的相对变形量。