公开(公告)号：US5001826A

公开(公告)日：1991-03-26

申请号：US529786

申请日：1990-05-25

Applicant: John F. Stewart ,  Joseph F. Carter ,  James A. Maas

Inventor： John F. Stewart ,  Joseph F. Carter ,  James A. Maas

IPC: B23B45/14 ,  B23B49/00 ,  B23Q1/00

CPC classification number: B23B49/008 ,  B23Q1/0063 ,  Y10T29/49895 ,  Y10T408/23 ,  Y10T408/55 ,  Y10T408/98

Abstract: A nose piece for use with an airfeed drill includes a cylindrical portion which has on one end a truncated cone for mounting a drill support bearing and on the other end a flange. Formed within the flange are a plurality of slots. These slots correspond to an array of rotatable fasteners and locking pieces mounted on the front of the housing. Attachment of the nose piece to the housing is accomplished by placing the slots over the fasteners and locking pieces and tightening the fasteners.

Abstract translation: 用于空气进给钻头的鼻片包括圆柱形部分，其一端具有用于安装钻头支撑轴承的截头圆锥体，在另一端具有凸缘。 形成在凸缘内的是多个槽。 这些槽对应于安装在壳体前部的可旋转紧固件和锁定件的阵列。 将鼻片附接到外壳是通过将狭槽放置在紧固件和锁定件上并紧固紧固件来实现的。