钛合金旋转超声辅助钻削的钻削力和切屑研究
发布时间：2019-06-27 12:41
【摘要】：针对难加工材料钛合金在采用普通麻花钻传统钻削过程中存在钻削力和扭矩较大使得钻孔困难,刀具使用寿命低,连续长切屑易缠绕刀具、划伤孔加工表面、增大刀具-切屑-工件孔壁之间的摩擦以及排屑差引起堵屑和卡刀具的问题,引入一种新刃型刀具(即八面钻),并结合超声振动钻削技术,进行了钛合金旋转超声辅助钻削试验。分析了旋转超声辅助钻削和普通钻削中切屑形成原理,采用文中所设计的旋转超声振动钻削主轴结合BV100立式加工中心平台、测力系统和非接触激光测量系统进行了无冷却条件下基于八面钻的钛合金旋转超声辅助钻削和普通钻削试验以及钻削力、扭矩和切屑形态的研究。试验结果表明:相比于普通钻削,超声钻削明显降低钻削力和扭矩分别为19.07%~20.09%和31.66%~34.3%,明显增强了钻头横刃和主切削刃的切削能力,获得了良好的断屑和排屑效果,提高了切削过程的稳定性,能够极大改善钛合金钻孔过程钻削困难、刀具使用寿命低和孔加工质量差的问题。
[Abstract]:In order to solve the problems that the drilling force and torque of titanium alloy are large in the traditional drilling process of common twist drill, the service life of the tool is low, the continuous long chip is easy to wound the tool, the hole surface is scratched, the friction between the tool, chip and workpiece hole wall is increased, and the chip blockage and clamping tool are increased, a new cutting tool (that is, octagonal drilling) is introduced, and the ultrasonic vibration drilling technology is combined with the cutting tool. The rotating ultrasonic assisted drilling test of titanium alloy was carried out. The principle of chip formation in rotating ultrasonic assisted drilling and ordinary drilling is analyzed. The rotating ultrasonic vibration drilling spindle combined with BV100 vertical machining center platform, force measurement system and non-contact laser measurement system are used to study the rotating ultrasonic assisted drilling and common drilling tests of titanium alloy based on octagonal drilling without cooling, as well as the drilling force, torque and chip morphology. The experimental results show that compared with ordinary drilling, ultrasonic drilling obviously reduces drilling force and torque by 19.07% 鈮，
本文编号：2506797
[Abstract]:In order to solve the problems that the drilling force and torque of titanium alloy are large in the traditional drilling process of common twist drill, the service life of the tool is low, the continuous long chip is easy to wound the tool, the hole surface is scratched, the friction between the tool, chip and workpiece hole wall is increased, and the chip blockage and clamping tool are increased, a new cutting tool (that is, octagonal drilling) is introduced, and the ultrasonic vibration drilling technology is combined with the cutting tool. The rotating ultrasonic assisted drilling test of titanium alloy was carried out. The principle of chip formation in rotating ultrasonic assisted drilling and ordinary drilling is analyzed. The rotating ultrasonic vibration drilling spindle combined with BV100 vertical machining center platform, force measurement system and non-contact laser measurement system are used to study the rotating ultrasonic assisted drilling and common drilling tests of titanium alloy based on octagonal drilling without cooling, as well as the drilling force, torque and chip morphology. The experimental results show that compared with ordinary drilling, ultrasonic drilling obviously reduces drilling force and torque by 19.07% 鈮，
本文编号：2506797
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