虚心学习先进经验,不断革新技术是我厂马恒昌小组的主要特点之一。今年三月份,小组的于景和同志,在学习兄弟厂先进经验的基础上,结合组內实际情况,设计制造成功一种自动卡紧的钻卡头。这种结构的钻卡头通过实际生产使用效果很好,目前正准备将它纳入我厂标准,作为经常使用 One of the key features of our factory Mahengchang Group is to openly and humbly learn advanced experience and constantly innovate the technology. In March of this year, Yu Jing and his comrades of the group, on the basis of studying the advanced experience of Brother Factory, designed and manufactured a successful self-chucking drill chuck based on the actual situation in the group. This structure of the drill chuck through the actual production of good results, is currently preparing to incorporate it into our factory standards, as often used