# US 2004/0005200 A1 · Tool for countersinking, deburring and/or spindling out holes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2004/0005200 A1 - Document ID: US20040005200A1 - Status: Published application - Kind: A1 - Application number: 10/423,265 - Filed: 2003-04-25 - Published: 2004-01-08 - Earliest claimed: 2002-04-26 - Assignees: Ulf Heule - Inventors: Heinrich Heule; Roland Schmitter; Swen Haemmerle - Web page: https://patentgrep.com/patent/US20040005200A1 ## CPC - B23B 51/102: {Back spot-facing or chamfering} - Y10T 408/858: Moving means including wedge, screw or cam - Y10T 408/859: Rotary cam - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A tool for countersinking, deburring and spindling out holes is described, consisting of a blade holder driven rotationally about its longitudinal axis, in which, at an angle to its longitudinal axis, at least one recess is arranged, in which one or more cutting blades or their holders are held as exchangeably and/or displaceably load-transmitting. In order to guarantee better protection against tilting and breaking of the cutting blade out of the recess in the blade holder it is provided that the recess is formed from radii substantially blending into one another. ## Claims ### Claim 1 Tool for countersinking, deburring and/or spindling out holes, with a blade holder (1), in which, at an angle to its longitudinal axis, at least one recess (2, 2′) is arranged, in which one or more cutting blades (3) or their holders (4) are held as exchangeably and/or displaceably load-transmitting, characterised in that the recess (2, 2′) is formed from straight lines and/or sections and/or radii (18, 19, 20, 22) substantially blending into one another. ### Claim 2 Tool for countersinking, deburring and spindling out holes, with a blade holder (1), in which, at an angle to its longitudinal axis, at least one recess (2, 2′) is arranged, in which one or more cutting blades (3) or their holders (4) are held as exchangeably and/or displaceably load-transmitting, characterised in that both the recess (2, 2′) and the basic body (12) of the at least one cutting blade (3) or its holder (4) located in the recess (2, 2′) is formed in the geometric main load area (27, 27a, 28, 28a) from radii (18, 19, 20, 22) substantially blending into one another or is formed from crosswise straight lines (36), located at an angle in relation to the load introduction direction or to the longitudinal extension (31) of the recess (2, 2′) or of the blade (3) or its holder (4). ### Claim 3 (depends on 1, 2) Tool according to claim 1 or 2, characterised in that the recess (2, 2′) and the basic body (12) of the at least one cutting blade (3) or its holder (4) located therein is constructed as mirror-symmetrical about its longitudinal extension (31) and/or about its transverse axis (41) or is constructed as point-symmetrical about its centre of gravity (S). ### Claim 4 (depends on 1, 2, 3) Tool according to claim 1 or 2 or 3, characterised in that the recess (2, 2′) and the basic body (12) of the at least one cutting blade (3) or its holder (4) located therein has an approximately “8”—or horseshoe-shaped or bone-shaped or kidney-shaped or double-leaf-shaped or double-trochoidal-shaped or double-pentagonal-shaped form. ### Claim 5 (depends on 1, 2, 3, 4) Tool according to one of claims 1 to 4, characterised in that two larger radii (18, 22), arranged approximately symmetrical to one another and positioned opposite one another, of the recess (2, 2′) blend into one another and the transition area is formed by smaller, radii (19, 20), facing in opposite directions, and/or sharp edges (32) and/or straight lines (34). ### Claim 6 (depends on 5) Tool according to claim 5, characterised in that the two larger radii (18, 22) do not hypothetically intersect and the transition area is formed by a transition piece (33) with straight lines (34). ### Claim 7 (depends on 4, 5) Tool according to claim 4 or 5, characterised in that the two larger radii (18, 22) have different sums of radii. ### Claim 8 (depends on 5, 6, 7) Tool according to one of claims 5 to 7, characterised in that the mid-points (17, 21) of the two larger radii (18, 22) are offset from one another by a horizontal (40, 35) and vertical offset (35, 40). ### Claim 9 (depends on 1, 2, 3, 4, 5, 6, 7, 8) Tool according to one of claims 1 to 8, characterised in that two polygons, arranged approximately symmetrical to one another and positioned opposite one another, of the recess (2, 2′) with circumference (18, 22) blend into one another and the transition area is formed by smaller, radii (19, 20), facing in opposite directions, and/or sharp edges (32) and/or straight lines (37). ### Claim 10 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9) Tool according to one of claims 1 to 9, characterised in that the cutting blade (3) is guided in the recess (2, 2′) as longitudinally displaceable. ### Claim 11 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) Tool according to one of claims 1 to 10, characterised in that the cutting blade (3) is fixed in the recess (2, 2′) as adjustable. ### Claim 12 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11) Tool according to one of claims 1 to 11, characterised in that the longitudinal extension (31) of the recess (2) is parallel to the longitudinal axis of the blade holder (1). ### Claim 13 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11) Tool according to one of claims 1 to 11, characterised in that the longitudinal extension (31) of the recess (2) is transverse to the longitudinal axis of the blade holder (1). ### Claim 14 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13) Tool according to one of claims 1 to 8 and 10 to 13, characterised in that the mid-points (17, 21) of radii (18, 22) are located flush with one another on the longitudinal extension (31) of the recess (2). ### Claim 15 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13) Tool according to one of claims 1 to 8 and 10 to 13, characterised in that the mid-points (17, 21) of radii (18, 22) are arranged offset in respect of one another from the longitudinal extension (31) of the recess (2). ### Claim 16 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15) Tool according to one of claims 1 to 8 and 10 to 15, characterised in that the larger radii (18 and 22) continuously blend into the smaller radii (19, 20) with bends. ### Claim 17 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15) Tool according to one of claims 1 to 8 and 10 to 15, characterised in that the larger radii (18 and 22) blend into the smaller radii (19, 20) with intermediate connection of straight line sections. ### Claim 18 Tool for countersinking, deburring and/or spindling out holes, with a blade holder (1), driven rotationally about its longitudinal axis, in which, at an angle to its longitudinal axis, at least one recess (2, 2′) is arranged, in which one or more cutting blades (3) or their holders (4) are held as exchangeably and/or displaceably load-transmitting, characterised in that the recess (2, 2′) is formed from radii (18, 19, 20, 22) substantially blending into one another.