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我厂加工直径为240～340、l/d>18,材料为40Cr 调质的缸筒,加工要求是:H8级精度、光洁度8、椭圆度允差0.04mm、直线度允差0.06mm。为了保证加工质量和具有可靠的精度余量,我们设计了图1所示的联合镗头,它连同整个工装系统,采用镗- 铰-滚压在同一次装夹下同步加工工艺,取得了良好的效果,现介绍如下。一、镗头结构联合镗头结构如图1所示,在镗头的主体上分布有可以装夹单刃镗刀的镗刀座1、安装双头浮铰刀及硬质合金滚轮滚压头7的矩形孔以及安装钢球滚压头2的
I plant processing diameter of 240 ~ 340, l / d> 18, the material is 40Cr quenched and tempered cylinder, processing requirements are: H8-level accuracy, finish 8, ovality tolerance 0.04mm, straightness tolerance 0.06mm. In order to ensure the processing quality and reliable accuracy margin, we designed the joint boring head shown in Figure 1, which together with the entire tooling system, using boring - hinge - rolling in the same folder under the synchronous processing technology and achieved good The effect is as follows. First, the boring head structure The boring head structure shown in Figure 1, the main body of the boring head can be equipped with a single-boring boring knife boring seat 1, the installation of double-headed floating reamer and carbide wheel rolling head 7 rectangular hole and install the ball rolling head 2