削片机飞刀切削角对切屑质量影响的试验研究

CUTTING PERFORMANCE TEST AND RESEARCH ON THE BLADE OF DRUM CHIPPER

为了研究鼓式削片机飞刀切削角的变化对切削力的影响,进而优化飞刀结构,降低削片机工作能耗,提高生产率。在实验室内模拟鼓式削片机的切削过程,将其旋转运动简化为往复直线运动,自行设计测力传感器并组建测试系统,对8种不同切削角度的刀具作切削试验,试验材料选用含水率为5.5%、直径为30cm的沙柳原材。实验结果表明当刀具前角γ=45°时,切削力最小。由此建议设计鼓式削片机飞刀时刀具前角采用45°为宜。

In order to optimize the structure of the blade,reduce the energy consumption and improve the production rate of the drum chipper,the research on the cutting force change caused by cutting angle diversification of chipper＇s blade was carried out in the laboratory by simulating the cutting process of the drum chipper. During the performance test,the blade was running as the reciprocating linear motion mode. Amini- type transducer was designed and manufactured to test the cutting force magnitudes in the process of cutting the salix- psammophila. The blades with eight cutting angles were manufactured as the test objects and the salix- psammophila with 5. 5% moisture contents and 30 cm diameter was selected as the test material. The test results show that the cutting force is the smallest when the cutting rake angle is 45°. This conclusion will provide an important reference for further studying the cutting performance of the blade,power match and structure optimization of the drum chipper.