Special boring bars for machining propeller shaft bores

Abstract

The invention provides a special boring bar for processing a propeller shaft hole, and relates to a special boring bar for processing the propeller shaft hole. A boring bar positioning shaft and a flange are mounted at the upper end and the lower end of the boring bar. A sliding rail is mounted in a pre-reserved slide rail groove of the boring bar and is connected with the boring bar through a pin. Taper of the sliding rail can be changed through a sliding rail taper adjusting bolt, and the sliding rail is clamped and fixed on the boring bar through a sliding rail clamping bolt. A boring cutter is mounted on a cutter seat which is connected with the sliding rail through a dovetail groove and which performs reciprocate motions along the sliding rail through a driving screw and a sliding polished bar which are mounted in the boring bar. A boring depth adjusting mechanism is mounted in a boring deep adjusting mechanism groove pre-reserved on the upper portion of the boring bar and is connected with the boring cutter to adjust the cutter depth of the boring cutter. A boring cutter number adjusting mechanism is mounted at the bottom of the boring bar and is connected with the boring cutter. The special boring bar has the advantages of novel structure, convenience in processing and operation, high efficiency and good accuracy.

Description

technical field [0001] 本发明所述的加工螺旋桨轴孔的特殊镗杆,涉及一种螺旋桨轴孔加工用的特殊镗杆。 Background technique [0002] 目前船用螺旋桨与艉轴间大多采用无键连接方式,要求螺旋桨轴孔具有较高的尺寸精度,误差一般不得超过0.05mm,且轴孔表面应有油压胀紧所需的油压槽。随着船舶载重吨位的提高,螺旋桨直径和重量也随之增大,轴孔长度也往往超过2000mm,现有大型数控机床受回转半径及机床转台承重量的限制,难以完成对大型螺旋轴孔的加工,轴孔的加工及精度的保证,成为现阶段大型螺旋桨加工的技术瓶颈。针对上述现有技术中所存在的问题,研究设计一种新型的加工螺旋桨轴孔的特殊镗杆,从而克服现有技术中所存在的问题是十分必要的。 Contents of the invention [0003] 鉴于上述现有技术中所存在的问题,本发明的目的是研究设计一种新型的加工螺旋桨轴孔的特殊镗杆,解决大型螺旋桨轴孔加工的技术难点,并提高轴孔加工精度及效率,其应不受螺旋桨轴孔深度、直径及重量的限制,并且能够在保证加工精度的前提下,实现快捷、方便的操作及高效的加工。 [0004] 本发明的技术解决方案是这样实现的: [0005] 本发明所述的加工螺旋桨轴孔的特殊镗杆;其特征在于特殊镗杆包括:镗杆定位轴、镗削深度调节机构、滑轨、滑轨夹紧螺栓、刀体座、镗刀刀体、法兰、驱动丝杠、滑轨锥度调节螺栓、镗杆体、镗刀数量调解机构、滑动光杠及销轴;镗杆定位轴与法兰分别装于镗杆体的上下两端;滑轨安装在镗杆体的预置滑轨槽中并通过销轴与镗杆体相联接,滑轨通过滑轨锥度调节螺栓实现锥度改变,并通过滑轨夹紧螺栓将滑轨夹紧固定在镗杆体上;镗刀刀体装于刀体座上,刀体座通过燕尾槽的方式与滑轨联接,并通过装于镗杆体内的驱动丝杠及滑动光杠沿滑轨上往复运动;镗削深度调解机构装于镗杆上部的预置的镗削深度调解机构槽中与镗刀刀体相连接,对镗刀刀体的切削深度进行调节;镗刀数量调解机构装在镗杆体的底部,并与镗刀刀体相连接。 [0006] 本发明所述的滑轨在镗杆体上设置单条或多条,每条滑轨上都装有一个刀体座与镗刀刀体。 [0007] 本发明所述的镗刀数量调解机构可以实现对参与镗削的镗刀刀体数量进行调节。 [0008] 本发明的特殊镗杆加工螺旋桨...

AI Technical Summary

Problems solved by technology

With the increase of the deadweight tonnage of the ship, the diameter and weight of the propeller also increase, and the length of the shaft hole often exceeds 2000mm. The existing large-scale CNC machine tools are limited by the radius of gyration and the bearing capacity of the machine tool turntable, and it is difficult to complete the large screw shaft hole. Processing, shaft hole processing and precision assurance have become the technical bottleneck of large propeller processing at this stage

Images