WO2005046917A1 - Fräswerkzeug und verfahren zum fräsen von vertiefungen - Google Patents
Fräswerkzeug und verfahren zum fräsen von vertiefungen Download PDFInfo
- Publication number
- WO2005046917A1 WO2005046917A1 PCT/DE2004/002367 DE2004002367W WO2005046917A1 WO 2005046917 A1 WO2005046917 A1 WO 2005046917A1 DE 2004002367 W DE2004002367 W DE 2004002367W WO 2005046917 A1 WO2005046917 A1 WO 2005046917A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- milling
- shaped
- milling tool
- base body
- cutting body
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/08—Disc-type cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/16—Working surfaces curved in two directions
- B23C3/18—Working surfaces curved in two directions for shaping screw-propellers, turbine blades, or impellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/34—Milling grooves of other forms, e.g. circumferential
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/36—Production of grooves
- B23C2220/366—Turbine blade grooves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49318—Repairing or disassembling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
- Y10T29/49325—Shaping integrally bladed rotor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49995—Shaping one-piece blank by removing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/303752—Process
- Y10T409/303808—Process including infeeding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/304424—Means for internal milling
Definitions
- the invention relates to a milling tool for milling depressions.
- the invention further relates to a method for milling recesses.
- the present invention relates to the production of groove-like depressions by means of milling.
- end mills are used for milling circular, groove-like depressions, the diameter of the end mill corresponding to the width of the groove-like recess to be produced.
- narrow, groove-like depressions i.e. If grooves are made with a small width, the end mill must have a small diameter.
- the end mill is susceptible to wear due to its small diameter, so that the end mill can only be operated with a small feed rate, which ultimately results in only a small removal per unit of time.
- the milling of narrow, circular grooves using end mills is therefore problematic overall.
- the present invention is based on the problem of creating a novel milling tool for milling depressions and a novel method for milling depressions.
- the milling tool has a disk-shaped or plate-shaped base body and at least one cutting body arranged on the outer circumference of the base body, the or each cutting body being angled relative to the disk-shaped or plate-shaped base body.
- the or each cutting body is angled in relation to the disk-shaped or plate-shaped base body in such a way that an inner milling radius defined by the or each cutting body is larger than an outer circumferential radius of the disk-shaped or plate-shaped base body.
- the or each cutting body is angled to one side with respect to a disk-shaped or plate-shaped surface defined by the base body, an outer side of the cutting body with the disk-shaped or plate-shaped surface making an angle of greater than 0 ° and less than 90 °, preferably an angle of Include greater than 5 ° and less than 65 °.
- FIG. 2 shows a section of the workpiece to be milled from FIG. 1;
- FIG. 3 shows a side view of a milling tool in the sense of the invention.
- FIGS. 1 to 4 are schematic representations
- FIG. 3 showing a preferred exemplary embodiment of a milling tool according to the invention.
- 4 shows a preferred use of the milling tool.
- FIG. 1 shows the construction principle of a milling tool 10 according to the invention together with a workpiece 11, a circular groove 13 being milled into a surface 12 of the workpiece 11.
- the groove 13 to be milled has a width DN and a depth TN, wherein FIG. 1 shows, as a further parameter of the circular groove 13 to be produced, an inner radius RZI of the circular groove 13 to be produced. From the inner radius RZI of the groove 13 to be produced and the thickness DN thereof, an outer radius of the circular groove 13 to be produced can be calculated by addition.
- the milling tool 10 according to the invention shown in FIG. 1 is used to mill the circular groove 13.
- the milling tool 10 has a disk-shaped or plate-shaped base body 14 as well as cutting bodies 15 which are angled relative to the base body 14.
- the cutting bodies 15 have a thickness DS which is adapted to the width DN of the groove 13 to be produced.
- the cutting bodies 15 are angled in relation to the plate-shaped or disk-shaped base body 14 such that an inner cutter radius RKI defined by inner edges 16 of the cutting bodies is on the one hand larger than an outer circumferential radius of the disk-shaped or plate-shaped base body 10 and on the other hand larger than the inner radius RZI of Circular groove 13 to be produced. Accordingly, an outer milling cutter radius, not shown in FIG. 1 and defined by outer edges 17 of the cutting bodies, is larger than an outer radius of the groove 13 to be produced.
- the cutting bodies 15 are angled toward one side with respect to the base body 14, an outer surface 18 of the cutting bodies 15 and a disk-shaped or plate-shaped surface 19 of the base body 14 defined by the base body 14 having an angle PHI of less than 90 ° and greater than 0 ° includes.
- the angle PHI is preferably in a range between 5 ° and 65 °, particularly preferably in a range between 5 ° and 35 °. Due to the bending of the cutting body 15 relative to the base body 14 of the milling tool 10 and due to the increased inner radius RKI compared to the inner radius RZI of the groove 13 to be produced, the milling tool 10 is inclined relative to the workpiece 11 to be machined for milling the groove 13. An axis of rotation 20 of the milling tool 10 and the surface 12 of the workpiece 11 to be machined in turn enclose the angle PHI.
- FIG. 2 illustrates a groove 13 produced using the above-described milling tool 10 according to the invention. Due to the angular position of the milling tool 10 relative to the workpiece 11 to be machined, parabolically shaped cutting edges result in the region of the groove 13.
- FIG. 2 shows a parabolically shaped one Inner wall 21 and a parabolically shaped outer wall 22 of the circular groove 13 to be produced.
- FIG. 2 shows a tolerance TOLI between the milled inner wall 21 and the desired shape thereof and a tolerance TOLA between the milled outer wall 22 of the groove 13 and the corresponding desired shape. The sum of TOLI and TOLA results in the total tolerance of the groove 13 to be produced.
- the external tolerance TOLA can be reduced, but it should be noted that due to the geometric conditions, an increase in the internal tolerance TOLI does not reduce the external tolerance TOLA to the same extent or to the same extent. If the internal tolerance is increased, the overall tolerance also increases in any case.
- the procedure is such that a workpiece 11 is provided and the inner radius RZI of the groove 13 to be milled and the depth TN and width DN of the groove 13 to be milled are preferably determined for the workpiece 11 ,
- the width DN of the groove 13 determines the thickness DS of the cutting body 15 of the milling tool 10 according to the invention.
- the permissible internal tolerance TOLI and the permissible one are made for the same TOLA external tolerance set.
- the radius RKI and the angle PHI are then determined or calculated from these values.
- an end mill as is customary in the prior art, for milling narrow, circular grooves, but rather a milling tool that has a plate-shaped or disk-shaped base body and on the outer circumference of the base body arranged cutting body has.
- the cutting bodies are angled relative to the base body.
- a cutter radius defined by the cutting bodies, in particular an inside radius of the cutter, is larger than the radius, in particular the inside radius, of the recess to be cut.
- the milling tool is inclined relative to the surface into which the groove is to be milled by the angle by which the cutting bodies are angled relative to the plate-shaped base body.
- a high milling cutter cutting performance can be provided even with narrow grooves, because the milling tool according to the invention is significantly less sensitive to mechanical stresses than end mills.
- the milling tool according to the invention is characterized by stable operation. Hard metal teeth or ceramic cutting inserts can be used as cutting bodies. The tool costs for the milling tool according to the invention are low.
- the milling tool 10 has a plate Shaped or disk-shaped base body 14 and the cutting body 15 angled relative to the base body 14.
- the angle PHI by which the cutting body 15 is angled to one side relative to the surface 19 is approximately 10 °.
- the method according to the invention is particularly suitable for milling narrow, circular grooves. It can be used particularly advantageously in the reworking or repair of grooves on gas turbine components that have deformed during operation, in which a groove to be machined is no longer circular, but oval or polygonized. This can also be carried out with the milling cutter according to the invention by first measuring the groove deformed during operation and, depending on this, influencing the milling tool in the sense of an adaptive milling method for machining the groove. In particular, the angle PHI is adjusted here.
- the milling tool according to the invention or the method according to the invention for milling operations on integrally bladed rotors, which are also referred to as blisk or bling.
- the method is particularly suitable for simplified blade profile milling on blisks or blings.
- flow channels between adjacent blades can be milled out on blisks or blings quickly and with a high metal removal rate.
- Such milling on blisks or blings can be done as rough machining and as final machining.
- a 5-axis milling machine is preferably used, with the aid of which the milling tool can be precisely controlled to every point of a profile to be milled.
- the milling tool according to the invention and the method according to the invention are also suitable for manufacturing individual blades, which will be described below with reference to FIG. 4.
- 1 shows a milling tool 10 according to the invention, with which a suction side 23 of an individual blade 24 is milled out according to FIG. 4.
- the milling tool 10 according to FIG. 4 corresponds in principle to the milling tool 10 according to FIG. 1, so that to avoid repetitions for the same assemblies same reference numbers are used.
- the milling tool 10 is driven to rotate in the direction of arrow 25. During milling, the milling tool 10 continues to be moved into the material in the direction of the axis of rotation.
- the inner edge 16 of the milling tool 10 When milling the suction side 23 of the individual blade 24, the inner edge 16 of the milling tool 10 must accordingly be adapted to the contour of the suction side 23. If a pressure side 26 of the individual blade 24 opposite the suction side 23 is to be milled out, then depending on the difference in curvature between the suction side 23 and the pressure side 26, either the outer edge 17 of the same milling tool 10 can be used, or the milling tool is changed. Here, too, rough machining and also finishing can be carried out on the individual blade 24. 4, the milling tool 10 must be designed such that no collision with blade contours of the blisk or bling takes place in any position thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04802639A EP1684932A1 (de) | 2003-11-11 | 2004-10-23 | Fräswerkzeug und verfahren zum fräsen von vertiefungen |
US10/578,702 US7559728B2 (en) | 2003-11-11 | 2004-10-23 | Milling tool and method for milling recesses |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10352542.4 | 2003-11-11 | ||
DE10352542A DE10352542A1 (de) | 2003-11-11 | 2003-11-11 | Fräswerkzeug und Verfahren zum Fräsen von Vertiefungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005046917A1 true WO2005046917A1 (de) | 2005-05-26 |
Family
ID=34559569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002367 WO2005046917A1 (de) | 2003-11-11 | 2004-10-23 | Fräswerkzeug und verfahren zum fräsen von vertiefungen |
Country Status (4)
Country | Link |
---|---|
US (1) | US7559728B2 (de) |
EP (1) | EP1684932A1 (de) |
DE (1) | DE10352542A1 (de) |
WO (1) | WO2005046917A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009109422A1 (de) * | 2008-03-03 | 2009-09-11 | Alstom Technology Ltd. | Vorrichtung zur nachbearbeitung von befestigungsnuten zur aufnahme einer beschaufelung einer gas- und/oder dampfturbinenanlage |
EP2476497A1 (de) * | 2010-04-19 | 2012-07-18 | Yamazaki Mazak Corporation | Schneideverfahren und schneidevorrichtung |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005299754A (ja) * | 2004-04-08 | 2005-10-27 | Thk Co Ltd | ねじ装置及びその製造方法 |
US20130000121A1 (en) * | 2011-06-30 | 2013-01-03 | Gregory Mark Burgess | Spherical cutter and method for machining a curved slot |
US8631577B2 (en) | 2011-07-22 | 2014-01-21 | Pratt & Whitney Canada Corp. | Method of fabricating integrally bladed rotor and stator vane assembly |
US8904636B2 (en) | 2011-07-22 | 2014-12-09 | Pratt & Whitney Canada Corp. | Method of fabricating integrally bladed rotor using surface positioning in relation to surface priority |
US8788083B2 (en) | 2011-07-22 | 2014-07-22 | Pratt & Whitney Canada Corp. | Compensation for process variables in a numerically-controlled machining operation |
US8844132B2 (en) | 2011-07-22 | 2014-09-30 | Pratt & Whitney Canada Corp. | Method of machining using an automatic tool path generator adapted to individual blade surfaces on an integrally bladed rotor |
DE102011082053A1 (de) * | 2011-09-02 | 2013-03-07 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Herstellung einer Axial-Ringnut in einem Werkstück |
CN111531327B (zh) * | 2020-03-23 | 2021-12-24 | 浙江水利水电学院 | 一种新型机床底座加工工艺及工装 |
DE102020131639A1 (de) | 2020-11-30 | 2022-06-02 | Gühring KG | Scheibenfräser zum Bearbeiten von Werkstücken mit einfach oder mehrfach gekrümmten Konturen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR925706A (fr) * | 1946-04-17 | 1947-09-11 | Cave Louis Et Flayac Christian | Procédé de fabrication des fraises employées sur les fraiseuses ou autres machines-outils |
DE2300736A1 (de) * | 1972-01-07 | 1973-07-12 | Gen Motors Corp | Fraeser |
GB2276575A (en) * | 1993-04-03 | 1994-10-05 | Rolls Royce Plc | Producing an integrally bladed rotor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2284636A (en) * | 1937-03-10 | 1942-06-02 | Gleason Works | Method of and apparatus for cutting gears |
FR2244593A1 (en) * | 1973-09-21 | 1975-04-18 | Gleason Works | Method of cutting turbine wheel teeth - uses cutters inclined W.R.T. axes of wheels to form undercuts |
US4518287A (en) * | 1982-07-07 | 1985-05-21 | Western Gear Corporation | Method of face mill generation of spiral bevel gears with integral central structure and resulting product |
DE19607230C1 (de) * | 1996-02-27 | 1997-02-20 | Walter Ag | Verfahren zur Herstellung bogenförmiger Nuten und Werkzeug dazu |
US6935817B2 (en) * | 2002-08-14 | 2005-08-30 | Pratt & Whitney Canada Corp. | Airfoil machining using cup tool |
DE102005020033A1 (de) * | 2005-04-29 | 2006-11-02 | Mtu Aero Engines Gmbh | Fräswerkzeug und Verfahren zum Fräsen von Vertiefungen |
-
2003
- 2003-11-11 DE DE10352542A patent/DE10352542A1/de not_active Ceased
-
2004
- 2004-10-23 US US10/578,702 patent/US7559728B2/en not_active Expired - Fee Related
- 2004-10-23 WO PCT/DE2004/002367 patent/WO2005046917A1/de active Application Filing
- 2004-10-23 EP EP04802639A patent/EP1684932A1/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR925706A (fr) * | 1946-04-17 | 1947-09-11 | Cave Louis Et Flayac Christian | Procédé de fabrication des fraises employées sur les fraiseuses ou autres machines-outils |
DE2300736A1 (de) * | 1972-01-07 | 1973-07-12 | Gen Motors Corp | Fraeser |
GB2276575A (en) * | 1993-04-03 | 1994-10-05 | Rolls Royce Plc | Producing an integrally bladed rotor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009109422A1 (de) * | 2008-03-03 | 2009-09-11 | Alstom Technology Ltd. | Vorrichtung zur nachbearbeitung von befestigungsnuten zur aufnahme einer beschaufelung einer gas- und/oder dampfturbinenanlage |
EP2476497A1 (de) * | 2010-04-19 | 2012-07-18 | Yamazaki Mazak Corporation | Schneideverfahren und schneidevorrichtung |
EP2476497A4 (de) * | 2010-04-19 | 2014-04-02 | Yamazaki Mazak Corp | Schneideverfahren und schneidevorrichtung |
Also Published As
Publication number | Publication date |
---|---|
EP1684932A1 (de) | 2006-08-02 |
DE10352542A1 (de) | 2005-06-09 |
US20070172319A1 (en) | 2007-07-26 |
US7559728B2 (en) | 2009-07-14 |
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