Cutting improvement structure for drill, has blade end installed at outer side of scrape surface, and scrap-release slope installed in between surface and drill tip, where surface bottom and drill body end forms reverse hook

摘要

#CMT# #/CMT# The structure has a drill tip (21) of a cutting part and a drill body (22) with two radially reverse screw slots, where the body has an extended clamp. A blade end (24) is installed at an outer side of a scrape surface (23), where a bottom of the scrape surface and an end of the drill body forms a reverse hook. A scrap-release slope (25) is installed in between the scrape surface and the drill tip. #CMT#USE : #/CMT# Used for a drill. #CMT#ADVANTAGE : #/CMT# The scrap-release slope is installed in between the scrape surface and the drill tip, thus improving drilling characteristics such as drilling alignment capability, cutting capability and scrap-release capability of the drill. The blade end is installed at the outer side of the scrape surface, thus enhancing the drilling efficiency. The utilization of the drill tip effectively reduces the frictional force between the cutting part and a work object, and hence increasing the drilling force of the scrape surface. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a front view of a drill. 21 : Drill tip 22 : Drill body 23 : Scrape surface 24 : Blade end 25 : Scrap-release slope.