轴承滚子技术能手——严永刚
发布日期：2024-02-07
“严师傅不愧是高手，只用5天时间就加工出二百多粒我们没有碰到过的异形滚子。”4月中旬，在特大型轴承事业部滚子车间磨加工现场，大家你一言我一语地赞扬技术能手严永刚。
严永刚为啥会受表扬呢？事情要从4月份说起。
4月初，特大型轴承事业部滚子车间承接了一重点用户急需产品配套滚子的加工任务。该产品是凸度的圆柱滚子，单粒3斤左右，需要220粒。由于这批滚子与常见类型不一样，其他滚子的倒角只有一个简单的弧形，而这种滚子的倒角就犹如“裙摆”，带有一层波浪起伏的花边，异于常类，因此对尺寸、精度、分组差要求很高，加上只有6天期限，时间紧，难度大，许多职工望而却步。
关键时刻，共产党员严永刚主动请缨：“我来加工这批‘花边’滚子！”然而，拿到产品加工图纸后，作为技术能手的严永刚也犯起难来：“采用传统的贯穿磨式的方法，既费时费力，效果也不好，那该怎么办呢？”结合多年的加工经验，严永刚认真思索起来。突然，他眼前一亮：何不打破常规，采用先磨形状再进行终磨合套的切入式磨加工方法，把砂轮的弧度先打出来？这样就可以为滚子加工出波浪形的“花边裙摆”。
随后，严永刚在一名调整工和一名技师的协助下，严格对每粒滚子的棱面度、椭圆度、角度、摆差、高度等进行了100%全方位的测量，把滚子尺寸精度始终控制在千分之三之内。由于数控设备每次开机就要重新调整加工参数，为了确保进度，他中午不停机，让工友给自己带饭，连续5天每天从早上7点一直干到晚上8点左右，终于提前完成了220粒凸形滚子的加工任务。
看着一粒粒“花边”滚子依次下线，顺利进入装配工序，严永刚紧皱了多天的眉头终于舒展开了。
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