Device puts first edge on a knife or a pair of scissors

The utility model discloses a device puts first edge on a knife or a pair of scissors, include two pivoted runner and drive rotor pivoted transmission in opposite directions, the runner includes rigid shaft and overlaps the grinding ring on rigid shaft, the grinding ring includes to be driven the steel bushing that there is the ring channel on the outer circumference and lies in the flexible abrasive material that the ring channel set up along the circumference, the cutter follow between two runners through and put the first edge on a knife or a pair of scissors by flexible abrasive material's periphery grinding. During the flexible abrasive material grinding and the frictional resistance between the cutter little, the cutter temperature rise is lower, cutter heat dissipation is also very fast, therefore the cutter can not produce the annealing of putting the first edge on a knife or a pair of scissors. 本实用新型公开了种开刃装置，包括两个相向转动的转轮和驱动转轮转动的传动装置，所述转轮包括刚性转轴和套于刚性转轴上的磨圈，所述磨圈包括外圆周上开有环形槽的钢套和位于环形槽内沿圆周设置的柔性磨料，刀具从两个转轮之间通过