Patent ID: 7404348
Filing Date: 2008-07-29
Classification: B26D,B26F,Y10T

Abstract:
1. A cutting tool for producing a cut having side walls, a bottom and a desired depth in materials which is controllable manually or program-controlled, comprising a_separating agent, at least one cutting head ( 10 ) with a blade holder ( 30 ) and a cutting knife ( 35 ) that is stationary or controlled by a driving device ( 20 ) so that the blade holder ( 30 ) with the cutting knife ( 35 ) is movable to-and fro along a cutting head longitudinal axis (L), a feeding pipe ( 150 ) with an outlet end adjacent the cutting knife for guiding the separating agent ( 160 ) to the cutting knife ( 35 ) during a cutting operation, the feeding pipe ( 150 ) being located at the cutting head ( 10 ) and having an outlet opening ( 156 ) connecting to a bore hole ( 155 ) in the cutting knife ( 35 ), the outlet openings ( 156 ) being located in the cutting and separating region of the cutting knife ( 35 ) for feeding the separating agent from the feeding pipe to the cut, the feeding pipe ( 150 ) being connected at one end thereof with a micro metering system ( 170 ), the outlet opening ( 156 ) of the bore hole ( 155 ) in the cutting knife ( 35 ) in a rounded taper ( 141 ) in a corner area ( 142 ) of the cutting knife ( 35 ) and having a height extension (X) effecting moistening of the cut bottom as well as the side walls of the cut, further comprising a driving motor with a drive shaft extending in the cutting head longitudinal axis, a cam disk connected with the drive shaft of the driving motor being mounted so as to rotate around the drive shaft longitudinal axis with control surfaces extending in different planes and mounted on opposite sides of the driving motor, a roller actively connected to the control surface of the cam disk, a lifting rod or tappet push rod actuated by a spring which is actively connected to the roller and the cam disk and having, at its free end the plate holder for the cutting knife.