Tear sword

The utility model discloses a tear sword, this tear sword include tool bit and knife rest, the top of tool bit is provided with cemented carbide cutter, be provided with the piece of pegging graft onthe lower terminal surface of tool bit, just the grafting piece pass the diaphragm of knife rest extends to the lower part of diaphragm, be provided with on the diaphragm of knife rest and be used forholding the first through -hole of grafting piece, the grafting piece on be provided with with deep floor matched with U type groove, grafting piece and deep floor pass through bolt fixed connection.This tear sword not only can guarantee the fastness be connected to be difficult to appear the phenomenon that the tool bit dropped between tool bit and the knife rest, and the tool bit can be dismantled in addition, practices thrift use cost. 本实用新型公开了种撕裂刀，该撕裂刀包括刀头和刀架，所述刀头的顶部设置有硬质合金刀，所述刀头的下端面上设置有插接块，且所述的插接块穿过所述刀架的横板延伸至所述横板的下部，所述刀架的横板上设置有用于容纳所述插接块的第通孔，所述的插接块上设置有与所述加强筋板相配合的U型槽，所述的插接块和加强筋板通过螺栓固定连接。该撕裂刀不仅能够保证刀头与刀架之间连接的牢固性，不容易出