Research on Energy Absorbing Component of Multi-Tooth Metal Cutting of Anti-Impact Hydraulic Support
Aiming at the problem of poor anti-impact and easy failure of hydraulic support under rock burst,a multi-tooth metal cutting energy absorbing component was proposed.Energy absorbing was carried out by cutting the gear teeth on the workpiece with a cutter.The energy absorption and anti-impact characteristics of the same tooth shape and the same tooth height under the same cutting volume are analyzed.The results show that compared with the traditional crushing energy absorbing member,the multi-tooth metal cutting energy absorbing member absorbs more energy and the reaction force is more stable.In the case of the same tooth shape,with the increase of the tooth height,the cutting force decreases,energy absorption decreases,load fluctuation coefficient increases,too large tooth height resulting in chip deformation is extremely unstable,affecting the cutting perfor-mance;in the case of the same tooth height.The peak force and total energy absorption of triangular and trapezoidal teeth are larger than those of rectangular teeth.In the case of stable cutting,the load fluctuation coefficient of triangular tooth is greater than that of trapezoidal tooth and rectangular tooth.Finally,the trapezoidal teeth of 26mm bottom,10mm top and 15mm high are the ideal energy absorbing components ofZHD6000 hydraulic support.
Rock BurstHydraulic SupportCutting Energy AbsorptionEnergy Absorption Characteristics
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