WO2010142670A1 - Schleifstützvorrichtung - Google Patents
Schleifstützvorrichtung Download PDFInfo
- Publication number
- WO2010142670A1 WO2010142670A1 PCT/EP2010/057993 EP2010057993W WO2010142670A1 WO 2010142670 A1 WO2010142670 A1 WO 2010142670A1 EP 2010057993 W EP2010057993 W EP 2010057993W WO 2010142670 A1 WO2010142670 A1 WO 2010142670A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grinding
- support
- bearing
- workpiece
- seat
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
- B24B5/421—Supports therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/065—Steady rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
Definitions
- the invention relates to a method for multi-bearing grinding of workpieces, in which several bearings are ground simultaneously by means of a grinding wheel set, at least one bearing during grinding at least temporarily a support for compensation of deformation of the workpiece by grinding erher learn according to the preamble of claim 1
- the invention also a device for multi-bearing grinding of workpieces, in which several bearings are ground simultaneously by means of a grinding wheel set, which is deliverable on a common grinding spindle in a multi-bearing wheelhead at least in the radial X1 direction with respect to the workpiece, wherein at least one bearing point during grinding at least temporarily a support on a support member seat in the manner of a steady seat to compensate for deformations of the workpiece by grinding forces experience and wherein the workpiece by means of a workpiece headstock about a rotational axis in rotation, for applying the method according to the preamble of claim 8.
- the invention is therefore an object of the invention to provide a method and apparatus for the type mentioned, in which the processing time for the workpiece over the prior art is further shortened.
- the grinding wheel is at least one bearing point for grinding a Stutzelementsitzes in the manner of a steady rest and grinds the Stutzelementsitz at least in an axial portion of this bearing that the grinding slicing the grinding wheel set during grinding with the grinding wheel for grinding a Stutz element seat at least partially grind the side surfaces and / or the bearing surfaces of the bearings, that after grinding the Stauerelementsitzes the grinding wheel for grinding a support member back to a small withdrawal amount or freewheeling, then one or more force-absorbing elements are brought into abutment with the respectively finished ground support element seat and that subsequently the bearing points are finished with the grinding wheel set.
- the workpieces to be machined by the method according to the invention are preferably crankshafts which are produced in large numbers and in which any reduction of the machining time is of economic advantage.
- the method can also be used for other workpieces, if they can be processed by grinding and allow the use of support elements, such as lunettes according to the prior art
- machining method is preferably sanded with grinding wheels with abrasive coating of ceramically bonded CBN but there are also all other known abrasive materials for the grinding tools conceivable
- the invention can be applied to grinding machine concepts with one or more grinding wheel blocks or grinding stations.
- Preferred fields of application are the grinding of crankshafts or camshafts or, in general, workpieces with a plurality of spaced-apart regions which can be ground simultaneously with a grinding wheel set
- An advantageous embodiment of the method may then be that at several bearings Stutzelementsitze be ground by means of associated grinding wheels
- These grinding wheels are preferably arranged on a common grinding spindle and each of them is advantageously one or more support elements assigned as force-absorbing elements during grinding
- a plurality of grindstop arrangements to be constructed on the machine so that the support element seats can be ground independently of each other
- the support elements are preferably brought by pivoting about a pivot axis or by a linear movement in and out of engagement with the associated Stutz element seat as computer control for the control of the support elements preferably the CNC control of the grinding machine is used, which the delivery of all grinding wheels and the Steering elements controls and coordinated all movements and grinding operations
- the support element seat is ground only to a near-final pre-dimension of the bearing seat and the support element is only up to die- - This pre-measurement is only slightly larger than the nominal dimension of the finished bearing seat. Then the bearing seat is finished ground
- the support element follows in dependence on the progress of the finish grinding with the grinding wheel set its adjustment in X1 direction, by a coordinated hereby adjustment in X2 R ⁇ chtung, thus opposite follows the position of the support element to the decreasing diameter of the Ground bearing seat and therefore can always exert an optimal Stutzrial This makes the precision of grinding compared to the variant of claim 5 significantly increased
- the sanding support unit which comprises a grinding headstock and movable support elements as essential assemblies, arranged on the same machine bed as the multi-bearing wheel head but it is preferably on the opposite It is possible to bring the grinding wheel and / or the support elements of the grinding support unit into engagement with a bearing point of the workpiece to be ground, while at the same time the grinding wheels of the multi-bearing grinding spindle stock on the opposite side of the workpiece are already in grinding engagement
- a Stutzelementsitz ie a ground bearing track for one or more support elements are ground, while at the same time can be started on the opposite side of the workpiece with the grinding of bearings with the grinding wheel set
- support elements according to claim 11 are preferably used about a pivot axis pivotable Stutzbacken or those which are displaceable by a drive on a straight path
- the movement to engage or disengage the support elements is controlled in an advantageous manner by the CNC control of the grinding machine
- Each of the support elements has in the intended contact area with the workpiece, the Stutzstelle, a wear and friction-reducing coating, which preferably consists of polycrystalline diamond (PCD) or Cubic Boron Nitride (CBN)
- PCD polycrystalline diamond
- CBN Cubic Boron Nitride
- FIG. 1 is a partial plan view of a grinding machine according to the invention for grinding the bearing points of a crankshaft
- Figure 2 is a detail view of the grinding of a Stutzelementsitzes
- FIG. 3 shows a detailed view of a sanding support unit according to the invention in engagement with the
- FIG. 4 shows a further embodiment of a sanding support unit with a pivotable workpiece
- FIG. 4A shows a guillotine unit according to FIG. 4, however, with a linear displacement of the
- FIG. 5C shows a detailed view of an adjustable support element in a design according to FIG. 5B
- FIG. 6 shows a further design of the sanding support unit according to the invention in use
- FIG. 7 shows a partial view of the inventive sanding support unit from FIG the side
- FIG. 1 shows a partial plan view of a grinding machine 1 according to the invention.
- a rotationally driven grinding spindle 3 on a feed carriage 2, which receives a plurality of grinding wheels 4 for grinding centrally mounted bearing points 21 of the workpiece 10.
- the grinding wheels 4 form They are rotated about the grinding spindle 3 and its rotary drive 7, which is indicated by the curved arrow
- the multi-bearing wheelhead 8 is here with four grinding wheels 4 for simultaneous grinding of the four main bearings 21st a crankshaft 20 Bestuckt and can be in the direction of the double arrow X1, ie perpendicular to the central axis of the workpiece 10, delivered and removed
- the workpiece 10 here is a crankshaft 20 whose central main bearings 21 define the central axis of the workpiece 10 and thus its rotation axis 22 for grinding.
- the rotation axis 22 is at the same time the axis of rotation 22 of the workpiece stub spindle 11 and the tailstock 16, as indicated by the curved arrow C1
- the Werkstuckspmdelstock 11 has a chuck 12 with jaws 13 for rotational entrainment of the workpiece and a tip 14 for centering the workpiece 10
- At the other end of the crankshaft 20 of the tailstock 16 is arranged with a tip 17.
- the inventive sanding support unit 30 carries in a wheel spindle 24 a rotatably driven grinding spindle 31 with a Grinding wheel 32 and Stutzbacken 35 or Stutzkorper 40, not shown here, but which are shown in Figures 3 and 4, the grinding wheel 32 is preferably as a ceramic-bonded CBN (cubic It is primarily used to grind a support element seat 28 on a bearing point 27 of the workpiece 10 intended for this purpose. Its delivery in the X2 axis is preferably also CNC-controlled.
- the grinding support unit 30 is for this purpose on the grinding table (not shown) Version with Z-axis) or the machine bed, also not shown (with version with Z1 axis)
- the sanding support unit 30 is arranged with the grinding wheel set 5 with respect to the workpiece 10 and the multi-bearing wheelhead 8 so that its grinding wheel 32 engages the same bearing 27 of the workpiece in use as one of the wheels 4 of the wheel set 5 is preferred this is one of the middle grinding wheels 4, since a deflection of the workpiece 10 to be compensated is greatest in the middle region.
- the opposing grinding wheels 4 and 32 act as supports for the workpiece 10, respectively
- the other bearings 27 are here also ground by the other grinding wheels 4 of the grinding wheel 5, but experience no support This is not serious, since it is sufficient in practice that only one and essentially centrally located It is within the scope of the invention, however, possible to emboss the sanding support unit with a plurality of grinding wheels 32 and associated support elements 34 and thus to grind a plurality of support element seats. As a result, a plurality of bearing points 27 to be ground can receive support. As has already been explained with reference to a bearing 27, the individual steps of the method according to the invention do not change as a result. It is also possible for a plurality of grinding support units to be used for long workpieces
- the grinding wheel 32 of the grinding support unit 30 is used in certain phases of grinding as a support for the workpiece 10 but there are also other support elements 34 are used, such as swivel Stutzbacken 35 or Stutzkorper 41, in Figs. 3, 4 and 6 are shown
- FIG. 2 shows a detailed view of the sanding of the support element seat 28 with the grinding wheel 32 of the sanding support unit.
- the bearing 27 here is a central main bearing 21 of a crankshaft 20 which is rotated about the rotation axis 22 during the grinding process Bearing 27, the grinding wheel 4 is delivered in X1 direction and grinds with the abrasive coating 6, the planets 25 or plan shoulders 26 of the bearing points of the crankshaft 20 At the same time, the grinding wheel 32 is delivered from the opposite side of the crankshaft 20 to the previously unprocessed bearing 27 and grinds there a Stutzelementsitz 28, to which they are put on the grinding spindle 31 in rotation
- This Stutzelementsitz 28 is in the example shown in an advantageous manner usually less wide than a finished ground main bearing 21, so that on both sides of the Stutzelementsitzes 28 unprocessed areas 29 can be seen However, the presence of such regions 29 is not absolutely necessary.
- the support element seat 28 can assume the full width of the main bearing
- each of the grinding wheels 4, 32 acts as a support for the workpiece 10 against bending transverse to its longitudinal axis, the rotation axis 22 It results
- an effect, as by a bezel This effect is shared with the other bearings 27, which are simultaneously ground by the other grinding wheels 4 of the grinding wheel 5 sets
- the grinding wheel 32 of the grinding support unit 30 can rotate freely, at least for the final stages of finish grinding, and therefore acts only as a means for cutting the workpiece, whereby it is prevented by the stub jaws 35 or 35 not shown here Support body 40 (see FIGS. 3 and 4) is supported.
- the grinding wheel 32 of the grinding grinding unit 30 for finish grinding can also be moved back a small distance with respect to the work piece 10, whereupon only the in contact with previously ground support element itz 28 of the workpiece 10 brought Stutzbacken 35 or Stutzkorper 40 have contact with this FIG. 3 shows the abovementioned support elements 34 of the sanding support unit 30 in the swung-in state.
- the sanding disk 32 is pulled back by a lift-off amount after the support element seat 28 has been sanded, so that the workpiece 10 is truncated solely by the support jaws 35 the grinding wheel 4 for grinding the bearings 27, such as a main bearing 21 of a crankshaft 20, on the opposite side of the bearing 27 in engagement with the workpiece 10 is
- the shaping of the support elements 34 and their pivoting or otherwise engaging with the workpiece must of course be such that on the one hand the Stutzstellen 39 of the respective support member 34, 35, 40 contact the workpiece on the previously produced with the grinding wheel 32 Stutzelementsitz 28 and on the other hand not collide with the grinding wheel 32 or parts of the workpiece 10
- the Stutzbacken 35 of Figure 3 which are mounted with the pivot axis 36 side of the grinding wheel 32, are therefore cranked in the front region with the Stutzstelle 39
- the Stutzbacken 35 are preferably hydraulically swiveled to a fixed stop, not shown here but there are also other drive variants feasible, such as a linear Zustue
- the Stutzbacken 35 are swung during the grinding of the Stutzelementsitzes 28 (shown in phantom) When the Stutzelementsitz 28 is finished, are the Stutzbacken 35 pivoted and the bearings 27 on the workpiece 10 can be ground to finished size
- the stub cheeks 35 are preferably arranged on the grinding wheel guard 43 (see FIG. 7), where the Kuhlschmierstoffdusen are usually also fastened for the grinding process.
- the grinding wheel 4 / n delivered to the grinding of the bearing seats The axis X2 is delivered to a certain Zustellwert so that the workpiece 10 is trimmed for grinding the bearings 27
- the Zustellbetrag the position of the Stutzbacken 35 can be precisely controlled so that the workpiece 10 is either only truncated or even by a small amount is overprinted in order to be able to produce dimensional corrections during grinding.
- the stub cheeks 35 can also be tracked as a function of the position of the X1 axis, so that a kind of trailing bezel is formed during the grinding of the position 27
- the Stutzbacken 35 wear in the front region a friction and wear-reducing coating 38, which preferably consists of PCD (polycrystalline diamond) or CBN (carbon-boron-Nit ⁇ d)
- FIG 4 a further embodiment of the support elements 34 is shown, are united in the two Stutzstellen 39 in a common Stutzkorper 40
- the Stutzstellen 39 are as previously provided with the wear and friction-reducing coating 38
- the outer contour of the pad 38, in abutment with the Stutzelementsitz 28 comes on the workpiece 10, is designed so that no Kantentrager arises
- Stutzkorper 40 Between the two spaced Stutzstellen 39 Stutzkorper 40 by its shape further away from the workpiece 10 than the Stutzstellen 39, which are formed here symmetrically on Stutzkorper 40, as can be seen in Figure 5A
- the Stutzkorper 40 is in the illustrated embodiment to a
- other shapes for the Stutzkorper 40, the arrangement of Stutzst ⁇ llen 39 and the way of delivery to the workpiece 10 are conceivable
- the Stutzkorper 40 also about other axes than the axis of rotation 31a of the grinding spindle 31 may be designed to be pivotable or linearly movable on a carriage, as shown in FIG. 4A.
- it is expedient to deliver or remove the stub cheeks 35 or the stent bodies 40 be it hydraulically or electromechanically a CNC control with the different process steps Coordinate and control during grinding
- FIG. 5B shows an embodiment which is advantageous depending on the workpiece 10, wherein the angles ⁇ and ⁇ of the necking locations 39 are different with respect to the connecting line between the axis of rotation 31a of the grinding spindle 31 and the axis of rotation 22 of the workpiece 10.
- This embodiment may be due to the resulting forces prove advantageous from the grinding process
- FIG 5C a further execution of a Stutzkorpers 41 is shown as a detail of Figure 5B, wherein the Stutzstellen 39 are adjustably arranged on a base body 41 and clamped after setting to a fixed position
- This setting can be adjusted depending on the workpiece 10, about when setting the grinding support unit 30 with different workpieces 10
- the setting remains constant when grinding similar pieces of work 10
- This adjustment can be made on one or both support points 39 (top / bottom) on the base body 41
- FIG. 6 shows a further advantageous embodiment.
- the grinding wheel 32 of the sanding support unit 30 is not retracted here after the sanding element seat 28 has been rubbed, but remains in the finished position of the supporting element seat 28 and the stump cheeks 35 of the sanding support unit 30 are closed.
- the workpiece 10 is now in position 3 points trimmed
- the drive of the grinding wheel 32 is turned off before swiveling in the stub jaws 35 and the grinding wheel 32 can move along freely. This results in a type of regulating wheel (cf. centerless grinding), which supports the workpiece 10 After closing the stub jaws 35 the workpiece 10 is centrally clamped in its central position and a kind of trailing lunette is created.
- the X2 axis is again CNC-controlled following the X1 axis so that the center axis of the workpiece 10 is kept exactly centered even when reducing the nominal size during bearing grinding
- the Stutzbacken 35 are also d Changes in the diameter of the bearing 27 are tracked.
- FIG. 7 shows a partial view of FIG. 1, which illustrates an embodiment of the sanding support unit.
- the sanding support unit 30 is fastened on the machine bed 45 or the sanding table and has a preferably CNC-controlled feed axis in the X 2 direction.
- This infeed axis is here by a feed carriage 47 realized, which is movable on the housing 46
- the housing 46 is used to accommodate the Fuhrungssaulen and the arrival tnebs the X2 axis and is mounted on the grinding table 45.
- a grinding spindle 31 is placed, which can be delivered at right angles to the workpiece longitudinal axis, which corresponds to the axis of rotation 31 a.
- the grinding wheel guard 48 is mounted on the grinding spindle body or on the grinding headstock housing, which receives the drives and bearings 44 for swiveling in the support jaws 35 on the outer region of the cooling pipes 43 for the coolant lubricant supply and in the outer area next to the grinding wheel 32
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011153290/02A RU2538443C2 (ru) | 2009-06-08 | 2010-06-08 | Шлифовально-опорное устройство |
ES10722129T ES2407538T3 (es) | 2009-06-08 | 2010-06-08 | Dispositivo de apoyo de rectificado |
JP2012514443A JP5715122B2 (ja) | 2009-06-08 | 2010-06-08 | 研削支持装置 |
KR1020117029479A KR101719534B1 (ko) | 2009-06-08 | 2010-06-08 | 연삭 지지 장치 |
EP10722129A EP2440369B1 (de) | 2009-06-08 | 2010-06-08 | Schleifstützvorrichtung |
US13/376,953 US20120164926A1 (en) | 2009-06-08 | 2010-06-08 | Grinding-supporting device |
BRPI1012969-3A BRPI1012969B1 (pt) | 2009-06-08 | 2010-06-08 | Processo e dispositivo de suporte de retificação de apoios múltimos de peças de trabalho |
CN201080025391.2A CN102458759B (zh) | 2009-06-08 | 2010-06-08 | 磨削支撑装置 |
US14/615,787 US11389918B2 (en) | 2009-06-08 | 2015-02-06 | Grinding-supporting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009024209.0 | 2009-06-08 | ||
DE102009024209A DE102009024209B4 (de) | 2009-06-08 | 2009-06-08 | Verfahren und vorrichtung zum mehrlagenschleifen von werkstücken |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/376,953 A-371-Of-International US20120164926A1 (en) | 2009-06-08 | 2010-06-08 | Grinding-supporting device |
US14/615,787 Division US11389918B2 (en) | 2009-06-08 | 2015-02-06 | Grinding-supporting device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010142670A1 true WO2010142670A1 (de) | 2010-12-16 |
Family
ID=42634924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/057993 WO2010142670A1 (de) | 2009-06-08 | 2010-06-08 | Schleifstützvorrichtung |
Country Status (10)
Country | Link |
---|---|
US (2) | US20120164926A1 (de) |
EP (1) | EP2440369B1 (de) |
JP (1) | JP5715122B2 (de) |
KR (1) | KR101719534B1 (de) |
CN (1) | CN102458759B (de) |
BR (1) | BRPI1012969B1 (de) |
DE (1) | DE102009024209B4 (de) |
ES (1) | ES2407538T3 (de) |
RU (1) | RU2538443C2 (de) |
WO (1) | WO2010142670A1 (de) |
Cited By (1)
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US20150246422A1 (en) * | 2009-06-08 | 2015-09-03 | Erwin Junker Maschinenfabrik Gmbh | Grinding-supporting device |
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DE102009047913A1 (de) * | 2009-09-22 | 2011-03-31 | Schaudt Mikrosa Gmbh | Schleifmaschine zum Schleifen von Werkstücken |
DE102009051737B3 (de) * | 2009-11-03 | 2010-10-07 | Erwin Junker Maschinenfabrik Gmbh | Verfahren zum Schleifen der Haupt- und Hublager einer Kurbelwelle durch Aussenrundschleifen und Schleifmaschine zum Durchführen des Verfahrens |
DE102010026663A1 (de) * | 2010-07-09 | 2012-01-12 | Emag Holding Gmbh | Schleifmaschine zum Schleifen von Nockenscheiben |
IT1403603B1 (it) * | 2010-12-22 | 2013-10-31 | Tenova Spa | Macchina rettificatrice perfezionata e metodo di rettifica |
US20160045996A1 (en) * | 2011-08-15 | 2016-02-18 | Emag Holding Gmbh | Simultaneous grinding machine |
DE102011110118B4 (de) | 2011-08-15 | 2015-07-09 | Emag Holding Gmbh | Simultanschleifmaschine |
CN103121184B (zh) * | 2013-01-08 | 2015-05-20 | 北京工业大学 | 一种数控凸轮轴磨床磨削变形补偿装置及方法 |
DE102013225292B4 (de) * | 2013-12-09 | 2018-11-15 | Erwin Junker Maschinenfabrik Gmbh | Schleifmaschine zum schleifen von zentrischen und/oder exzentrischen lagerstellen an wellenteilen mit einer lünette zum abstützen der lagerstellen |
DE102015206082A1 (de) * | 2015-04-02 | 2016-10-06 | Mahle International Gmbh | Schleifmaschine |
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2010
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- 2010-06-08 KR KR1020117029479A patent/KR101719534B1/ko active IP Right Grant
- 2010-06-08 EP EP10722129A patent/EP2440369B1/de active Active
- 2010-06-08 ES ES10722129T patent/ES2407538T3/es active Active
- 2010-06-08 RU RU2011153290/02A patent/RU2538443C2/ru active
- 2010-06-08 BR BRPI1012969-3A patent/BRPI1012969B1/pt active IP Right Grant
- 2010-06-08 CN CN201080025391.2A patent/CN102458759B/zh active Active
- 2010-06-08 WO PCT/EP2010/057993 patent/WO2010142670A1/de active Application Filing
- 2010-06-08 JP JP2012514443A patent/JP5715122B2/ja active Active
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2015
- 2015-02-06 US US14/615,787 patent/US11389918B2/en active Active
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DE10144644A1 (de) * | 2001-09-11 | 2003-04-10 | Junker Erwin Maschf Gmbh | Verfahren und Vorrichtung zum Schleifen von zentrischen Lagerstellen von Kurbelwellen |
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US20150246422A1 (en) * | 2009-06-08 | 2015-09-03 | Erwin Junker Maschinenfabrik Gmbh | Grinding-supporting device |
US11389918B2 (en) * | 2009-06-08 | 2022-07-19 | Erwin Junker Maschinenfabrik Gmbh | Grinding-supporting device |
Also Published As
Publication number | Publication date |
---|---|
EP2440369A1 (de) | 2012-04-18 |
BRPI1012969A2 (pt) | 2018-01-16 |
JP5715122B2 (ja) | 2015-05-07 |
CN102458759A (zh) | 2012-05-16 |
EP2440369B1 (de) | 2013-03-06 |
JP2012529378A (ja) | 2012-11-22 |
US20150246422A1 (en) | 2015-09-03 |
BRPI1012969B1 (pt) | 2020-06-02 |
RU2538443C2 (ru) | 2015-01-10 |
US11389918B2 (en) | 2022-07-19 |
RU2011153290A (ru) | 2013-07-20 |
CN102458759B (zh) | 2014-04-30 |
KR20120033307A (ko) | 2012-04-06 |
ES2407538T3 (es) | 2013-06-12 |
DE102009024209B4 (de) | 2012-12-06 |
US20120164926A1 (en) | 2012-06-28 |
DE102009024209A1 (de) | 2010-12-09 |
KR101719534B1 (ko) | 2017-03-24 |
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