WO2004033136A1 - Maschine zum schruppen und schlichten von funktionselementen von kurbel- oder nockenwellen - Google Patents
Maschine zum schruppen und schlichten von funktionselementen von kurbel- oder nockenwellen Download PDFInfo
- Publication number
- WO2004033136A1 WO2004033136A1 PCT/EP2003/008671 EP0308671W WO2004033136A1 WO 2004033136 A1 WO2004033136 A1 WO 2004033136A1 EP 0308671 W EP0308671 W EP 0308671W WO 2004033136 A1 WO2004033136 A1 WO 2004033136A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crankshaft
- machine
- milling
- tool
- rotation
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/18—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning crankshafts, eccentrics, or cams, e.g. crankpin lathes
-
- 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
- B23C3/06—Milling crankshafts
-
- 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
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5104—Type of machine
- Y10T29/5109—Lathe
- Y10T29/5114—Lathe and tool
Definitions
- the invention relates to a machine for roughing and finishing functional elements of crankshafts or camshafts by turning and / or milling with two in alignment with the axis of rotation of the crankshaft or camshaft being machined and at a mutual distance from one another according to the length of the crankshaft or camshaft headstocks that can be driven at different speeds, each with a chuck and a center point integrated into each chuck.
- the "functional elements" are, for example, the main and connecting rod bearing journals of crankshafts, the bearings and cams of camshafts and other parts of crankshafts or camshafts which are operatively connected to other components of an internal combustion engine.
- a machine of the type mentioned above, which is used for machining crankshafts, is known for example from DE 197 49 939 AI.
- the known machine has
- a headstock that can be driven at different speeds, each with a chuck for the crankshaft
- a support that can be moved in the X and Z directions with a rotating drivable milling tool
- Direct spindle drives for tools and their advantages, particularly with regard to high dynamics and accuracy, are generally known.
- the relevant specialist is also familiar with using such direct drives for the rotational movement of workpieces.
- DE 101 30 433 AI a direct drive for a rotating on a lathe. Removable workpiece to be machined.
- a generic machining center for crankshafts is known from De 43 29 610 C2.
- the well-known 'machining center provides, for example on a machine bed, among others, at each end of a driven face plate for gripping and rotating a crankshaft,
- a universal milling unit that can be moved in the X and Z directions and
- a machining head that can be moved in the X and Z directions.
- crankshafts at the hub bearings, main bearings, cheek side surfaces, end journals and end flanges should be machined on a single machine with little effort and in the shortest machining time.
- the central, rotationally symmetrical surfaces, for example of the main bearing points should be by workpiece-based processes, that means being processed at high speeds.
- machining eccentric, rotationally symmetrical surfaces, for example the hub bearings machining is provided by tool-based methods, that is to say at lower speeds.
- the desired cutting speed is achieved by the rotational speed of the crankshaft.
- longitudinal turning, facing, broaching, turning and turning-turning are mentioned.
- the cutting speed by the movement, in particular rotation of the tool is achieved.
- the Orthogonalfräsen, external milling and external cylindrical grinding According to these specifications does the known combination machine two workpiece spindles before that face each other at a mutual distance corresponding to the length While the one spindle can drive the workpiece at high speed, the second spindle is designed to drive the workpiece at a lower speed by a factor of 10.
- the main bearing points are at high speeds the crankshaft is turned or cleared, the crankshaft's bearing positions are milled or ground at low speeds, and a compensating chuck is also used in the known combination machine , which has compensating jaws.
- crankshafts are said to.
- crank pins of crankshafts and the cams of camshafts should be able to be produced in such a way that they perform the required lifting movements during operation with high accuracy.
- the stroke accuracy is the prerequisite for the use of tangent radii on connecting rod bearings and, of course, for the reduction of the material to be removed from the crankshaft bearings by grinding.
- the headstocks are designed to be directly drivable and, with mutual spacing in the Z direction, two supports that can be moved in the X and Z directions, each with a rotationally drivable one Milling tool and two supports that can be moved in the X and Z directions, each with at least one Turning tool are provided, the milling and turning tools are diametrically opposite each other with respect to the common axis of rotation of the headstock.
- crankshaft or camshaft to be machined such as the machining of the main and connecting rod bearing journals of a crankshaft, is carried out according to the invention in the order of roughing and finishing in a first machine.
- the centering, machining of the ends and the introduction of oil bores, deep rolling, (laser hardening), grinding, superfinishing of the functional elements of the shaft being machined can then be carried out in other machines.
- the first machine provided according to the invention corresponds to the idea of a short process chain, in which, when such a machine comes to a standstill or fails, the entire production line is not stopped, but rather the capacity of the production line is reduced for the downtime.
- a crankshaft or a camshaft can be machined so precisely that the residual error in the main bearing alignment for the subsequent straightening rolling is very small.
- the support which can be moved in the X and Z directions, can also be equipped with a broaching or grinding tool.
- a plurality of turning tools can be arranged on the circumference of a turret disk.
- the workpiece spindles should be provided with direct drives. These are drives ' that can drive the workpiece spindle without the interposition of further gears.
- Such a direct drive is characterized by a particularly high level of accuracy because errors which can creep into the work result due to the gear play are eliminated.
- a direct drive also has the advantage that it covers a wide speed range and can be controlled very precisely over a large speed range.
- a tailstock with a quill is provided on the opposite side, in which a center point of the bearing, which is mounted in the axis of rotation of the shaft being machined, can be moved in the axial direction.
- the direct drives for the workpiece spindles are provided in a speed range between 5 min “1 to 1500 min " 1 , but preferably at 1000 min "1 .
- the machine has two double supports.
- Each double support consists of a slide that can be moved in the Z direction, which can move parallel to the axis of the workpiece spindle, and an X slide, which bridges the shaft to be machined and has a milling structure on one side of the shaft with a milling disk and on the other Side of a turning setup with a turning tool.
- the rotary assembly can consist of a turret disk with at least one turning tool, or can have a continuous drive with a broaching tool for turning broaching.
- the double support is opposed by a second identical double support at a distance in the Z direction, similar to the case with the chucks of the workpiece spindles.
- two bearing points for the main or pin bearings can be machined simultaneously from both ends of the crankshaft or camshaft to be machined.
- two tool supports are again provided, on which turning tools or broaching tools are attached. The latter are assumed to be able to make a limited amount of rotation about their spindle axis.
- Rotary tools are provided with turret disks which are equipped with different tools which come into engagement one after the other. This arrangement also makes it possible to simultaneously process the corresponding main bearing points of the crankshaft or camshaft from both ends.
- crank pins when machining a crankshaft, the main bearings one and five and the main bearings two and four are machined simultaneously, while for reasons of space the main bearing three is machined at the end.
- the processing sequence for the crank pins is similar, first the two crank pins one and four and then the two crank pins two and three are machined simultaneously.
- Fig. 1 is a plan view of the machine
- Fig. 2 shows a cross section through the machine along the
- two headstocks 3 and 4 are arranged opposite one another in the direction of the longitudinal center axis 2.
- the mutual distance between the two headstocks 3 and 4 corresponds to the length of a crankshaft 5 which is clamped between the two headstocks 3 and 4.
- crankshaft 5 is clamped in by jaw chucks 6 and 7, one of which engages 6 on the flange 8 of the crankshaft 5 and the other 7 on the latter Pin 9.
- the crankshaft 5 is still centered at its two ends 8 and 9 in grain tips 10 and 11.
- the center points 10 and 11 are aligned with the longitudinal center axis 2 of the machine 1 and are at the same time concentric with the main axis of rotation of the crankshaft 5.
- a tool support 12 is also provided, via which a milling tool 13 can be rotatably driven.
- the tool support 12 can be moved in the two directions X and Z with respect to the machine bed 1.
- a suitable drive 14, as is known per se, is used for this purpose.
- a second tool support 15 is provided opposite the longitudinal center axis 2 and at approximately the same distance therefrom.
- the tool support 15 carries, for example, a turret disk 16, which is equipped with different turning tools 17, for example turning tools or broaches.
- the tool supports 12 and 15 can be moved by a single drive 1 ′′ 4 in the X direction and possibly also in the Z direction and thus form a double support.
- the milling tool 13 is rotatably supported in the tool support 12 about the axis of rotation 18 and the turret disk 16 in the tool support 15 about the axis of rotation 19.
- two further tool supports 20 and 21 are then provided on the machine bed 1, which also represent a double support due to their common drive 14.
- Support is 20 also equipped with a milling disk 13 which can be driven about the support axis 22.
- the support 21 is in turn equipped with a turret disk 16 which can be pivoted about the axis of rotation 23. With the help of the two additional tool supports 20 and 21, the crankshaft 5 can be machined from both ends 8 and 9 simultaneously.
- the turning tools 17 of the two turret disks 16 are simultaneously engaged on the first and fifth, then on the second and fourth and finally one of the two turret drives 16 with their turning tool 17 on the third main bearing of the crankshaft 5, the crankshaft 5 rotating at high speeds.
- the two milling disks 13 work with their cutting edges first the two crank pins one and four and then the two crank pins two and three simultaneously, while the crankshaft 5 rotates at low speeds. In the latter
- Machining state are the two milling disks 13 in the axial direction, i.e. as close as possible to each other in the Z direction.
- the two jaw chuck 6 and 7 each equalizing jaws 24 which ensure 'that 5 unilateral forces are not transmitted to the crank shaft 5 during the tensioning of the crankshaft.
- Jaw chucks 6 and 7 with these properties are known as compensating chucks. After each machining operation, ie after turning or milling, the clamping jaws 24 of the compensating jaw chucks 6 and / or 7 are loosened briefly. As a result, the stresses introduced into the crankshaft 5 by chip removal can be briefly reduced again. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/528,876 US20060143888A1 (en) | 2002-09-27 | 2003-08-06 | Machine for rough-machining and planning functional elements of crankshafts or camshafts |
EP03807774A EP1542820A1 (de) | 2002-09-27 | 2003-08-06 | Maschine zum schruppen und schlichten von funktionselementen von kurbel- oder nockenwellen |
AU2003250213A AU2003250213A1 (en) | 2002-09-27 | 2003-08-06 | Machine for rough-machining and planing functional elements of crankshafts or camshafts |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10245071A DE10245071B4 (de) | 2002-09-27 | 2002-09-27 | Maschine zum Schruppen und Schlichten der Lagerzapfen von Kurbelwellen |
DE10245071.4 | 2002-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004033136A1 true WO2004033136A1 (de) | 2004-04-22 |
Family
ID=31984139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/008671 WO2004033136A1 (de) | 2002-09-27 | 2003-08-06 | Maschine zum schruppen und schlichten von funktionselementen von kurbel- oder nockenwellen |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060143888A1 (de) |
EP (1) | EP1542820A1 (de) |
AU (1) | AU2003250213A1 (de) |
DE (1) | DE10245071B4 (de) |
WO (1) | WO2004033136A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014204807A1 (de) * | 2014-03-14 | 2015-09-17 | Erwin Junker Grinding Technology A.S. | Verfahren und Vorrichtung zum Schleifen von Großkurbelwellen |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006024715B4 (de) * | 2006-05-26 | 2008-07-24 | Niles-Simmons Industrieanlagen Gmbh | Verfahren zum Bearbeiten der Lagersitze der Haupt- und Hublager von Kurbelwellen sowie Werkzeugmaschine zur Durchführung des Verfahrens |
DE102011113801A1 (de) * | 2011-09-16 | 2013-03-21 | Hegenscheidt-Mfd Gmbh & Co. Kg | Verfahren zum Verbessern der Güte der Oberflächen von Kurbelwellen |
DE102011113758B4 (de) * | 2011-09-18 | 2020-12-31 | Mag Ias Gmbh | Verfahren und Vorrichtung zur Fertigbearbeitung von Werkstücken |
DE102012004902B4 (de) | 2012-03-09 | 2014-03-20 | Emag Holding Gmbh | Verfahren und Vorrichtung zur spanabhebenden Bearbeitung von Werkstücken |
TWI729912B (zh) * | 2020-08-18 | 2021-06-01 | 煒森機械有限公司 | 鋼材表面粗化之切削機構 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19749939A1 (de) * | 1997-11-11 | 1999-05-20 | Boehringer Werkzeugmaschinen | HS-Fräsen + Drehen/Drehräumen/Dreh-Drehräumen |
DE10027945A1 (de) * | 2000-06-08 | 2002-01-10 | Widia Gmbh | Scheibenfräser |
DE10035718A1 (de) * | 2000-07-21 | 2002-02-07 | Boehringer Werkzeugmaschinen | Werkzeugmaschine |
DE10052443A1 (de) * | 2000-10-23 | 2002-05-08 | Boehringer Werkzeugmaschinen | Kombimaschine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5175914A (en) * | 1987-04-28 | 1993-01-05 | Yamazaki Mazak Corporation | Machine tool having dual spindles and tool rests |
DE68924580T2 (de) * | 1988-04-19 | 1996-03-28 | Nakamura Tome Precision Ind | Cnc-drehmaschine mit zwei gegenüberliegenden hauptspindeln. |
DE4329610C2 (de) * | 1993-09-02 | 1996-08-29 | Doerries Scharmann Gmbh | Bearbeitungszentrum für Kurbelwellen |
US5765456A (en) * | 1993-09-11 | 1998-06-16 | Index-Werke Gmbh & Co. Hahn & Tessky | Process for the machining of a workpiece on a CNC automatic lathe as well as a CNC automatic lathe |
WO2001030522A1 (fr) * | 1999-10-28 | 2001-05-03 | Nakamura-Tome Precision Industry Co., Ltd. | Tour combine a commande numerique |
JP4681191B2 (ja) * | 2000-01-18 | 2011-05-11 | 中村留精密工業株式会社 | 2主軸対向旋盤 |
DE20012080U1 (de) * | 2000-07-12 | 2000-12-07 | Röhm GmbH, 89567 Sontheim | Komplett-Spannsystem an einer Drehmaschine |
DE20208792U1 (de) * | 2002-06-06 | 2003-07-24 | Niles-Simmons Industrieanlagen GmbH, 09117 Chemnitz | Dreh-Fräsmaschine |
-
2002
- 2002-09-27 DE DE10245071A patent/DE10245071B4/de not_active Expired - Fee Related
-
2003
- 2003-08-06 AU AU2003250213A patent/AU2003250213A1/en not_active Abandoned
- 2003-08-06 US US10/528,876 patent/US20060143888A1/en not_active Abandoned
- 2003-08-06 WO PCT/EP2003/008671 patent/WO2004033136A1/de not_active Application Discontinuation
- 2003-08-06 EP EP03807774A patent/EP1542820A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19749939A1 (de) * | 1997-11-11 | 1999-05-20 | Boehringer Werkzeugmaschinen | HS-Fräsen + Drehen/Drehräumen/Dreh-Drehräumen |
DE10027945A1 (de) * | 2000-06-08 | 2002-01-10 | Widia Gmbh | Scheibenfräser |
DE10035718A1 (de) * | 2000-07-21 | 2002-02-07 | Boehringer Werkzeugmaschinen | Werkzeugmaschine |
DE10052443A1 (de) * | 2000-10-23 | 2002-05-08 | Boehringer Werkzeugmaschinen | Kombimaschine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014204807A1 (de) * | 2014-03-14 | 2015-09-17 | Erwin Junker Grinding Technology A.S. | Verfahren und Vorrichtung zum Schleifen von Großkurbelwellen |
DE102014204807B4 (de) * | 2014-03-14 | 2016-12-15 | Erwin Junker Grinding Technology A.S. | Verfahren und Vorrichtung zum Schleifen von Großkurbelwellen |
US11628537B2 (en) | 2014-03-14 | 2023-04-18 | Erwin Junker Grinding Technology A.S. | Method and device for grinding large crankshafts |
Also Published As
Publication number | Publication date |
---|---|
EP1542820A1 (de) | 2005-06-22 |
US20060143888A1 (en) | 2006-07-06 |
DE10245071B4 (de) | 2006-08-24 |
DE10245071A1 (de) | 2004-04-08 |
AU2003250213A1 (en) | 2004-05-04 |
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