Authors: Songyong Liu Xinxia Cui Changlong Du Lin Fu
Publish Date: 2011/12/02
Volume: 18, Issue: 6, Pages: 1994-2000
Abstract
In order to obtain the determining method of the installing angle and decrease the performance indices cutting force and wearing rate of the pick the relationships among the installing angles impact angle inclination angle and the skew angle were studied and the static model of installing angles of the pick was built The relationships among the impact angle the tip angle of pick and the kinematics parameters of the pick were built too Moreover the mechanic models of the maximum clearance angle and the wearing angle of the pick were set up To research the relationships of the installing angles and the change law of the wearing angle along with the kinematics parameters the simulation was done In order to verify the correctness of the models the cutting experiments were done by employing two picks with different pick tip angles The results indicate that the cutting force is the smallest when the direction of the resultant force of pick follows its axis and the relationship derived among the installing angles should be satisfied In addition to decrease the cutting force and the wearing of the pick the tip angle of pick should not be larger than the half of the difference between the minimum wearing angle and the impact angle of the pick and the clearance angle must not be less than zeroFoundation item Project51005232 supported by the National Natural Science Foundation of China Project20100481176 supported by the China Postdoctoral Science Foundation Project201104583 supported by the China Postdoctoral Special Fund Project1101106c supported by Jiangsu Postdoctoral Foundation China
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