SiCp/Al窄槽的铣磨实验研究（Ⅰ）——磨削力

摘要

针对SiCp/Al复杂曲面加工中大去除量、高精度的需求,以窄槽的铣磨加工工艺为例,实验研究SiCp/Al窄槽铣磨加工中加工参数、铣磨工具对铣磨力的影响规律.实验结果表明：加工参数和铣磨工具均对铣磨力有影响.在实验参数取值范围内,铣磨力随砂轮线速度、进给速度的增大而增大,进给速度对铣磨力的影响最大;采用螺旋槽铣磨工具可显著降低铣磨力,但铣磨力波动较大,并随螺旋角的增大而减弱.在实验条件下,可优选铣磨力波动相对较小的50°螺旋角的开槽砂轮进行窄槽的粗加工.%To meet the need of large removal allowance and high efficiency of machining SiCp/Al surface,taking narrow slot mill-grinding as a typical example,the influence of machining parameters and mill-grinding tool on SiCp/Al machining force was experimentally investigated.The results show that the mill-grinding force is increased with the increasing speed and feedrate,and the feedrate is a significant impact on the force.In machining narrow-slot,the mill-grinding force can be reduced obviously by using the grinding tool with helix flutes.However,the mill-grinding force is fluctuant,and the fluctuant amplitude is reduced by reducing helix.Under the given conditions,the recommended helix of the wheel with flutes in mill-grinding narrow-slot is 50° which can perform a relative stabile machining process.