# US 2013/0156519 A1 · Guiding tool for the drill bit of a drilling apparatus and drilling method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156519 A1 - Document ID: US20130156519A1 - Status: Published application - Kind: A1 - Application number: 13/715,002 - Filed: 2012-12-14 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: EADS Construcciones Aeronauticas, S.A. - Inventors: Javier Martinez Quintero - Web page: https://patentgrep.com/patent/US20130156519A1 ## CPC - B23B 49/00: Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored (marking-out equipment B25H7/00; measuring devices, gauges G01B) - B23B 49/02: Boring templates or bushings - B23Q 17/00: Arrangements for {observing,} indicating or measuring on machine tools (for automatic control or regulation of feed movement, cutting velocity or position of tool or work B23Q15/00) - B23B 2215/04: Aircraft components - B23B 2260/128: Sensors - Y10T 408/03: Processes - Y10T 408/21: with signal, indicator, illuminator or optical means - Y10T 408/98: Drill guide - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A guiding tool for the drill bit of a drilling apparatus and a method of making drills. The tool includes a body with an orifice for passage of the drill bit and a base with at least three protruding feet for resting on the working surface. The feet are configured with inner holes with an outlet at its ends. The tool is connected to a pneumatic device of pressurized gas supply which includes a signal indicative of correct positioning of the tool for performing a drill when a simultaneous blocking of gas output in said feet is produced when all of them are in contact with said working surface; the tool including a pressurized gas pipeline up to said feet. ## Claims ### Claim 1 A guiding tool for the drill bit of a drilling apparatus on a working surface, so that it is positioned perpendicularly to it, comprising a body having an orifice for passage of the drill bit and a base with at least three protruding feet for resting on said working surface, comprising: a) the feet are configured with inner holes with an outlet at their ends; b) the guiding tool comprises a pressurized gas pipeline ending in said feet operatively connected to a pneumatic device that supplies pressurized gas; c) said pneumatic device includes a signal indicative of the correct positioning of the tool for performing a drill when, having activated the supply of pressurized gas to the tool, there is a simultaneous blocking of gas output by said feet when all of them are in contact with the working surface. ### Claim 2 (depends on 1) The guiding tool according to claim 1, wherein said pneumatic device comprises a pressurized gas supply circuit, having a pressure gas source and a regulating valve, and an actuating parallel circuit of an emitter of said signal controlled by a bistable pressure valve connected to the pressurized gas source and to the gas supply circuit. ### Claim 3 (depends on 2) The guiding tool according to claim 2, wherein said signal is an acoustic signal and said emitter is a pneumatic whistle. ### Claim 4 (depends on 2) The guiding tool according to claim 2, wherein said signal is a light signal and said emitter is a light source. ### Claim 5 (depends on 2) The guiding tool according to claim 2, wherein said pressurized gas source is a compressor. ### Claim 6 (depends on 2) The guiding tool according to claim 2, wherein said pressurized gas source is a pressurized gas tank. ### Claim 7 (depends on 2) The guiding tool according to claim 2, wherein the pressurized gas pipeline comprises a conduit connected at its inlet with said pressurized gas supply circuit and a gas distribution chamber to the holes of the feet located between the base and an additional piece connected in a tight manner to it and to the body. ### Claim 8 (depends on 7) The guiding tool according to claim 7, wherein said conduit is arranged parallel to the orifice for passage of the drill bit. ### Claim 9 (depends on 1) The guiding tool according to claim 1, wherein said body has a tubular shape and said orifice is located in a central position. ### Claim 10 (depends on 1) The guiding tool according to claim 1, wherein said working surface is the surface of an aeronautical structure. ### Claim 11 A method of making drills in a working surface in a direction perpendicular thereto, comprising the following steps: a) providing a guiding tool for the drill bit of the drilling apparatus provided with at least three feet with inner holes for resting on the working surface; b) arranging the guiding tool on the working surface in the intended position for a drill making pressurized gas to flow through said holes; c) detecting the simultaneous blocking of gas output by said feet when all of them are in contact with said working surface and emitting a signal indicative of said simultaneous blocking; d) performing the drill with the drill bit of the drilling apparatus guided by said tool when said signal is received. ### Claim 12 (depends on 11) The method according to claim 11, wherein said indicative signal is an acoustic signal. ### Claim 13 (depends on 11) The method according to claim 11, wherein said indicative signal is a light signal. ### Claim 14 (depends on 11) The method according to claim 11, wherein said working surface is a curved surface. ### Claim 15 (depends on 11) The method according to claim 11, wherein said working surface is the surface of an aeronautical structure.