为推广小口径金刚石钻探新技术,我厂二车间从去年开始试制和制造φ43和φ50毫米小口径钻杆接头,在机械加工方面逐步摸索了一些经验。如铣卡槽这道工序,过去一直是在卧铣上单件单边铣槽。这样不但要分度,而且装夹次数大大增加,劳动强度大,生产效率低,远远赶不上生产发展的需要。针对这一情况,最近革新成功“小口径钻杆接头组合铣卡槽自动夹具”(以下简称铣卡槽夹具)。此夹具安装在自制的专用铣床上使用,“铣卡槽夹 In order to promote the new technology of small diameter diamond drilling, the second workshop of our factory began to trial manufacture and manufacture φ43 and φ50 mm small diameter drill pipe joints from last year, and gradually gained some experiences in machining. Such as milling slot card this process, the past has been in the horizontal milling single-sided milling slot. In this way, not only graduation, but also greatly increased the number of folders, labor-intensive, low productivity, far behind the needs of production and development. In response to this situation, the successful reform of the recent “small diameter drill pipe joints combined slot automatic chuck” (hereinafter referred to as the card slot fixture). This fixture is mounted on a self-made special milling machine to use, "milling card slot folder