烟秆切割力影响因素试验研究

为了解影响烟秆切割力大小的因素，自制夹具，在万能试验机上对烟秆试样进行了单因素和多因素切割力测试。单因素试验结果表明：无论采用光刀片还是锯齿形刀片，以滑切方式切割的切割力最小；光刀片和锯齿形刀片滑切的切割力都与切割速度呈负相关，与切割角度和试样直径呈正相关。多因素试验结果表明：影响烟秆切割力的因素由大到小依次为切割速度、切割方式、切割角度、试样直径、切割刀片形式；最佳切割方案为滑切，切割速度为300 mm/s，切割刀片为光刀，切割角度为0°，试样直径为26.5 mm。

Factors influencing cutting force in tobacco stem cutting tests

To understand the factors affecting cutting force in tobacco stem cutting, single factor and multi-factor test were carried out on tobacco stem samples using the universal testing machine with a homemade fixture. The results of the single factor test showed that the cutting force with smooth blade or serrated blade in the way of slide cutting is the smallest; cutting forces in sliding cutting test using smooth blade and serrated blade are negatively related to the cutting speed, while positively related to the cutting angle and the diameter of the stem. The results of multi-factor test showed that cutting force in tobacco stem cutting was influenced mostly by cutting speed, followed by cutting way, cutting angle, stem diameter and cutting blades. The best program for tobacco stem cutting includes a slide cutting with cutting speed of 300 mm/s, a smooth blade with a cutting angle of 0° and a stem diameter of 26.5 mm.