不同钻针速率对木材微钻阻力的影响规律

Effect Rule of Different Drill Speeds on the Wooden Micro-drill Resistance

为了解决微钻阻力检测设备由于不同参数设置而造成的检测数据无法比较的问题,基于IML木材微钻阻力仪可调节设置不同钻针旋转速率和前进速率的特性,试验设置5档旋转速率和5档前进速率,并交叉搭配组合,形成25种情况的参数条件设置.探讨了在不同参数设置情况下,木材微钻旋转阻力和前进阻力的变化趋势及两者之间的比例关系;分析了钻针旋转速率和前进速率对微钻阻力值的影响规律,得到了相关变化系数方程.研究结果表明:同一条件下微钻旋转阻力和前进阻力的比值范围相对固定;旋转阻力和前进阻力与钻针的旋转速率成反比关系,与钻针的前进速率成正比关系,且其各自的变化系数相对一致;微钻阻力检测中,旋转阻力能更为直接精确地反映钻针速率的变化情况.

To solve the problem that the test data cannot be compared due to the micro-drill resistance test device within different parameter setting, experiments were performed based on the characteristic that the IML resistograph can set the parameters in different drilling speeds and different feed speeds. The experiment conditions were designed in 5 types of drilling speeds and 5 types of feed speeds, and then they were paired each other, 25 types of experiment conditions were provided. The variation trend of rotation resistance, feed resistance and the scaling relation between them were discussed. The effect rule of drilling speed and feed speed on the micro-drill resistance were analyzed, and the dependent equations of them were obtained. Results show that in the same experiment condition, the ratio between the rotation resistance and feed resistance were in a fixed range. Both the rotation resistance and feed resistance were in an inverse proportional relationship to the drilling speed, and in a directly proportional relationship to the feed speed. The variation factor of them were almost consistent respectively. The rotation resistance could reflect the changing circumstance of drilling speed and feed speed in resistograph testing more accurately and more directly.