【摘要】 以机床磨削超细硬质合金为研究对象,对磨削加工时各种运行状态下的功率、不同磨削参数下的磨削比能及磨削有效加工能效进行研究。结果表明:空载运行的功率占据了磨床总磨削功率的92%;磨削比能e_s随砂轮线速度v_s的增大有小幅度增大,随磨削深度a_p和工件进给速度v_w的增大而减小,其中v_w对e_s影响最大,a_p次之,v_s最小。磨削有效加工能效η随v_s、a_p及v_w的增大而增大,其中a_p对η影响最大,v_s次之,v_w最小。因此,为了降低磨削能耗,在实际磨削加工超细硬质合金时,应尽量缩短载运行时间。在保证加工质量的前提下,应选择较大的a_p和v_w。更多还原

【Abstract】 For the grinding of ultra-fine cemented carbide, the machine tool energy consumption was investigated through the power at various operating states and grinding parameters. The influence of grinding parameters on grinding energy consumption was characterized by grinding specific energy e_s and grinding effective energy efficiency η. The results show that the idle power accounts for 92% of the total grinding power of the grinding machine. The e_s increases slightly with the increase of wheel linear velocity v_s, and decreases with the increase of the grinding depth a_p and the workpiece feeding speed v_w. The v_w has the greatest influence on e_s, followed by a_p and v_s. Moreover, the η increases with the increase of a_p, v_s and v_w, respectively. The a_p has the greatest influence on η, followed by v_s and v_w. In order to reduce the grinding energy consumption during processing, the idle time should be minimized. Meanwhile, under the premise of ensuring machining quality, a larger a_p and v_w should be adopted during grinding the ultra-fine cemented carbide.更多还原