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铣刨机的重要设计参数铣削力及铣削功率的计算方法尚无专门的资料作依据,铣刨机铣刨转子对沥青混凝土路面的铣削,可类比斜齿圆柱多刃铣刀对灰铸铁的铣削,铣刨机铣削力及铣削功率可通过灰铸铁材质与沥青混凝土材质强度的等值换算得出。选用两种材料的抗拉强度的比值作为换算系数,灰铸铁的抗拉强度值为400MPa,沥青混凝土的抗拉强度,根据我国现行《公路沥青路面设计规范TJT014-97》,采用劈裂试验测得的劈裂值(细粒式密级配沥青混凝土,沥青针入度≤90,温度15℃)为1.2～1.6MPa,取1.6MPa为计算值,两者相比所得换算系数为250。将灰铸铁和沥青混凝土的延伸率作比较,灰铸铁的延伸率由《金属切削原理及刀具设计》工件材料切削加工性分级表中查得,取值14%,沥青混凝土的延伸率由《道路建筑材料》中查得为12%,两者相比得计算铣刨机铣削沥青混凝土铣削力及铣削功率的修正系数为1.167。将换算系数和修正系数代入灰铸铁的铣削力和铣削功率计算公式,可得铣刨机铣削混凝土铣削力和铣削功率的计算公式。以LX1200铣刨机为例进行计算,所得数据与国内同行业厂家同类机型所做的试验数据相比,结果非常相近。
Important Design Parameters for Milling Machines There are no specific data available for milling forces and milling power. Milling Milling Rotor Milling of Asphalt Pavements Makes it Possible to Milling Gray Iron with Multi-Bevel Cylindrical Milling Cutters , Milling machine milling power and milling power through the gray cast iron material and asphalt concrete strength equivalent conversion derived. Select the tensile strength ratio of two materials as a conversion factor, the gray cast iron tensile strength value of 400MPa, the tensile strength of asphalt concrete, according to China’s current “Highway Asphalt Pavement Design Code TJT014-97”, the use of split test Obtained cleavage value (fine graded dense graded asphalt concrete, asphalt penetration ≤ 90, temperature 15 ℃) is 1.2 ~ 1.6MPa, take 1.6MPa calculated value, the conversion factor between the two was 250. The gray cast iron and asphalt concrete elongation comparison, gray cast iron elongation by the “metal cutting principle and tool design,” the work piece material machinability checklist found, the value of 14%, the asphalt concrete elongation by the “road Building Materials ”was found in 12%, compared with the milling milling machine to calculate the milling force milling power and milling power correction factor of 1.167. The conversion factor and correction factor into gray cast iron milling force and milling power calculation formula, milling milling machine milling force and milling power milling formula can be obtained. LX1200 milling machine as an example for calculation, the data obtained with the domestic industry manufacturers similar models made by the test data compared to the results are very similar.