PREFABRICATED DRILLING HAMMER FOR A DRILLING MACHINE WITH IMPROVED WORKABILITY

摘要

PURPOSE: A prefabricated drilling hammer for a drilling machine is provided to reduce uneven wear by freely and uniformly rotating the drilling hammer, and to improve workability by extending the service life of the drilling hammer.;CONSTITUTION: A prefabricated drilling(20) hammer for a drilling machine comprises two or more unit hammers(21,22). The unit hammers comprise cases(212,222), button bits(214,224), and drive serves(216,226). The cases are fixed to revolving units(23,24). The button bits are respectively inserted into the cases. The drive serves are inserted between the cases and button bits.;COPYRIGHT KIPO 2010