CAJ | 학술논문

热量分配比例是锯切加工中的一个重要参量，其值的大小直接影响到传入单颗磨粒的热流强度，进而影响到磨粒的失效形式。以锯切加工为对象，通过花岗石锯切实验，利用热电偶和功率计分别测量温度和功率信号。采用ANSYS有限元软件，分别将基于抛物线热源分布和三角形分布的计算温度与实验测量温度进行拟合，获得弧区内热量分配比例。研究结果表明：锯切弧区的热源更接近抛物线分布，热源按抛物线分布计算的热量分配比例约为6.08%~12.21%，比热源按三角形分布的结果约小1.61%~4.07%。
열량분배비례시거절가공중적일개중요삼량，기치적대소직접영향도전입단과마립적열류강도，진이영향도마립적실효형식。이거절가공위대상，통과화강석거절실험，이용열전우화공솔계분별측량온도화공솔신호。채용ANSYS유한원연건，분별장기우포물선열원분포화삼각형분포적계산온도여실험측량온도진행의합，획득호구내열량분배비례。연구결과표명：거절호구적열원경접근포물선분포，열원안포물선분포계산적열량분배비례약위6.08%~12.21%，비열원안삼각형분포적결과약소1.61%~4.07%。
The energy partition is an important parameter in sawing whose value directly affects the heat flux of single grain therefore contributing largely to the failure of diamond The temperature of the sawing contact is studied in sawing granite The temperature and power signals are obtained by ammeter and foil thermocouples A temperature model is established based on a parabolic heat flux distribution and a triangular heat flux distribution Though matching the calculated temperature carves by the finite element software ANSYS with the measured temperature carves the energy partition to the work piece are calculated It is found that the heat flux in sawing contact zone is much nearer a parabolic distribution and the energy partition to the work piece is about 6 08%~12 21% for parabolic distribution about 1 61%~4 07% small than that of triangular distribution.