SiCp／Al窄槽的铣磨实验研究——磨削力

Experimental research on mill-grinding SiCp/Al narrow slot part I: machining force

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．

Abstract:

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.