工件拉刀两定位工装

• 作 者: 官煜基
• 机 构: 山东淄博齿轮汽车厂,
• 出 处: 机械工人.冷加工
• 发表日期: 1988年10期
• 关键词: 拉刀 工件定位 拉削 内花键 刀齿 线对 定位块 凹形 摆杆 齿顶

我厂生产BJ130变速箱,其中换挡摆杆渐开线内花键是在拉床上拉削而成的(图1),要求φ13圆球中心垂线应对准齿顶中心。过去采用先在工件上划中线,拉刀穿入内孔,目测工件中线与拉刀齿中线对齐,进行拉削,误差大,加工出的工件达不到技术要求。为此,我们设计制造了工件、拉刀两定位工装(图2)。工件定位是由工装盘2及两螺栓6紧固在工装盘2下方的凹形铁7(A向视图)来完成的。

I plant production BJ130 gearbox, in which the shift lever involute spline is broached from the broaching machine (Figure 1), requires φ13 ball center perpendicular to the top of the tooth center. In the past, the first line was drawn on the workpiece, broaching into the hole, visual inspection of the workpiece centerline and broach tooth line alignment, broaching, the error is large, the workpiece does not meet the technical requirements. To this end, we designed and manufactured the workpiece, broach two positioning tooling (Figure 2). Workpiece positioning by the fixture plate 2 and two bolts 6 fastened under the fixture plate 2 concave iron 7 (A view) to complete.