Patent ID: 8037948
Filing Date: 2011-10-18
Classification: B23B,B28D,Y10T

Abstract:
1. A drilling machine comprising: a motor housing; a motor at least partially located within said motor housing; a gear box housing; a shaft driven by the motor and extending into the gear box housing; a drilling shaft extending through said gear box housing and having a longitudinal outgoing channel arranged in the drilling shaft for supply or removal of a drill flow medium to and from a tool part that is connected or connectable to the drilling shaft; a transmission, in the gear box housing, located between said shaft driven by the motor and the drilling shaft, said transmission configured to rotate the drilling shaft at a desired rotation speed; a drill flow medium room, between the motor housing and the gear box housing, configured such that the entire drill flow medium room can be supplied with the drill flow medium when the drilling machine is in operation; an incoming drill flow medium conduit for the supply or removal of the drill flow medium to and from said room, wherein said incoming drill flow medium conduit extends from outside of said room and into said room; wherein a rear section of the drilling shaft extends into said drill flow medium room; wherein the outgoing channel in the drilling shaft is in communication with said room via the rear section of the drilling shaft; wherein said motor housing has a motor housing end cover detachably mounted to the motor housing and wherein said gear box housing has a gear housing end cover detachably mounted to the gear box housing; and wherein said motor housing and said motor housing end cover form a rear unit of the drilling machine, and wherein said gear box housing and said gear housing end cover form a front unit of the drilling machine.