公开(公告)号：US3577807A

公开(公告)日：1971-05-04

申请号：US3577807D

申请日：1968-10-31

Applicant: ROCKWELL MFG CO

Inventor： ALEXANDER ROBERT H ,  FALTER RONALD C ,  RINGER CECIL D ,  LINSKER EUGENE

IPC: B23B45/04 ,  B23Q16/00 ,  B23B45/14

CPC classification number: B23Q16/00 ,  B23B45/04 ,  B23Q5/326 ,  Y10T408/23

Abstract: A portable tool incorporates an air motor which drives a tubular drive shaft splined to a spindle movable axially in a direction parallel to the axis of the motor. The spindle has a hollow rearward end portion with internal threads which receive screw members mounted on a tubular feed shaft also driven by the motor through an adjustable detent clutch. An adjustable stop collar surrounds the spindle and provides precise depth control, an air cylinder provides rapid advancement of the spindle, and the clutch provides automatic disengagement of the positive feed as well as limited rotation of the spindle at the forward end of the feed stroke before the spindle retracts. The controls for adjusting the stop collar and for effecting positive feed and rapid advancement and retraction of the spindle are located at the rear of the tool.