MOVABLE BORING MACHINE FOR MAKING HOLE OF LARGE DIAMETER AND HIGH ROUNDNESS WITH COMPACT STRUCTURE

摘要

PURPOSE: A movable boring machine is provided to make carriage possible by compacting the structure including a boring bar supporter, a boring bar and a feeding handle and to form a precise hole by putting a boring bite into the position of desired depth. CONSTITUTION: A movable boring machine comprises a first boring bar supporter(10) having a bearing(11) and a chip cover(13), a second boring bar supporter(20) having a bearing(21), a fastening bolt(22), a chip cover(23) and a screw spaced apart from the first boring bar supporter, a feeding handle(30) connecting a boring bar(40) to the outer face of the second boring bar supporter and moving a boring bite(41) connected with the boring bar into a hole, the boring bar composed of two bars, and a rotating drill(50) fitted in the boring bar and transferring power.