EP0896552B2 - Improvements in and relating to grinding machines - Google Patents
Improvements in and relating to grinding machines Download PDFInfo
- Publication number
- EP0896552B2 EP0896552B2 EP97927269A EP97927269A EP0896552B2 EP 0896552 B2 EP0896552 B2 EP 0896552B2 EP 97927269 A EP97927269 A EP 97927269A EP 97927269 A EP97927269 A EP 97927269A EP 0896552 B2 EP0896552 B2 EP 0896552B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- wheel
- arm
- workpiece
- grinding wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
- B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
-
- 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
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
-
- 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
- B24B27/00—Other grinding machines or devices
- B24B27/0084—Other grinding machines or devices the grinding wheel support being angularly adjustable
Definitions
- EP 744243A2 which is state of the art under Art. 54(3) and (4) EPC, is disclosed a grinding machine having first and second grinding wheels, the second grinding wheel being carried by an arm pivotable by a ram about the axis of the first grinding wheel.
- the arm mount is moved and the arm is pivoted so as to disengage the second wheel from the workpiece and permit the workpiece to be removed.
- the pivoting arm may be arranged to one side or the other of the first grinding wheel, and a spindle may be provided at the outboard end of the pivoted arm which offsets the second grinding wheel to the side of the arm and into alignment with the first grinding wheel.
- FIG. 2 there is shown a grinding machine in accordance with one embodiment of the invention, having a wheelhead 20 on which is rotatably mounted the large wheel 12. Pivotally mounted on the wheelhead about an axis parallel to the rotational axis of the wheel 12 is a swinging arm 22 at whose outboard end is rotatably mounted the small grinding wheel 14.
- the arm 22 is offset from the wheel 12 and from any guard around the wheel.
- the small wheel 14 is likewise offset from the wheel 12, so that there is a lateral clearance between the wheels.
- the arm 30 is pivoted about a housing 32 which is slidably mounted on the wheelhead 20, movement of the housing being imparted by the drive mechanism 34 secured to the wheelhead.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Automatic Assembly (AREA)
Description
Claims (9)
- A grinding machine in which a first grinding wheel (12) is mounted on a wheelhead (20) adapted to be moved towards and away from a workpiece (10) for grinding same, a second grinding wheel (14) is mounted at one end of an arm (22;30), the other end of which is pivotally mounted to the wheelhead about an axis parallel to the axis of rotation of the first grinding wheel, in which the first grinding wheel (12) is larger than the second grinding wheel (14), and means is provided for pivoting the arm (22) from an upper parked position into a lower grinding position in which the second grinding wheel (14) engages a peripheral surface of the workpiece (10), characterised in that for rough grinding and subsequent final profile grinding of a cam including re-entrant positions, the arm (22) is pivoted to the wheelhead (20) to the rear of the first grinding wheel (12), the length of the arm being such that when the second wheel (14) is in the grinding position, part of the second wheel (14) is closer to the workpiece (10) in the direction of movement of the wheelhead than is the corresponding part of the first grinding wheel (12) so that as the wheelhead (20) is advanced towards the workpiece to perform a grinding operation using the second wheel (14), the first wheel (12) is kept well clear of the workpiece.
- A grinding machine according to claim 1, wherein the arm (12) and second grinding wheel (14) are laterally offset from the first grinding wheel (12).
- A grinding machine according to claim 1, wherein a long arm (22A) is employed so that the second grinding wheel (14) is positioned in between the first grinding wheel and the workpiece (10) with the two grinding wheels in the same plane, so that as the wheelhead (20) is subsequently advanced towards the workpiece (10), it is the same part of the workpiece (10) which is engaged by the second grinding wheel (14) as was engaged by the first grinding wheel (12).
- A grinding machine according to claim 1 or claim 2, wherein the arm (30) is of sufficient length to position the second wheel (14) on the opposite side of the workpiece (10) from that of the first grinding wheel (12) and a sufficient distance is provided between the two grinding wheels to permit the workpiece (10) to rotate and for the wheelhead (20) to move in known manner so as to maintain contact between the workpiece and one of the grinding wheels without the workpiece coming into engagement with the other grinding wheel.
- A grinding machine according to claim 4, wherein the second grinding wheel (14) is located in position beyond the workpiece (10) before the first wheel is advanced and a rough grinding operation is performed.
- A grinding machine according to claim 4 or claim 5, wherein the arm (30) carrying the second grinding wheel (14) is mounted on a slideway (32) on the wheelhead (20) so as to be movable in a direction towards and away from the workpiece (10) on the opposite side thereof from that engaged by the first grinding wheel (12), in parallel with the sliding movement of the wheelhead (20).
- A grinding machine according to any of claims 3 to 6 claims, wherein the arm is arranged on one side of the first grinding wheel (12), and a spindle is provided at the outboard end of the arm to offset the second grinding wheel (14) to the side of the arm and into alignment with the first grinding wheel (12).
- A grinding machine according to any one of claims 1 to 6, wherein the arm is configured and shaped so as to circumscribe the upper half of the first grinding wheel (12) and any casing surrounding the latter, when the arm has been pivoted from the parked position into the grinding position.
- A grinding machine according to any one of claims 1 to 6 or 8, wherein a bifurcated arm (30) is employed, the two parts lying on opposite sides of the first wheel.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9612734 | 1996-06-18 | ||
GBGB9612734.5A GB9612734D0 (en) | 1996-06-18 | 1996-06-18 | Improvements in and relating to grinding machines |
PCT/GB1997/001652 WO1997048523A1 (en) | 1996-06-18 | 1997-06-18 | Improvements in and relating to grinding machines |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0896552A1 EP0896552A1 (en) | 1999-02-17 |
EP0896552B1 EP0896552B1 (en) | 2001-09-26 |
EP0896552B2 true EP0896552B2 (en) | 2005-03-30 |
Family
ID=10795486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97927269A Expired - Lifetime EP0896552B2 (en) | 1996-06-18 | 1997-06-18 | Improvements in and relating to grinding machines |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0896552B2 (en) |
DE (1) | DE69706974T3 (en) |
ES (1) | ES2162306T5 (en) |
GB (1) | GB9612734D0 (en) |
WO (1) | WO1997048523A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6390907B1 (en) * | 1998-02-09 | 2002-05-21 | Joel Kym Metzler | Machine tool and machine tool spindle and workpiece mounting-apparatus and grinding process |
FR2802422B1 (en) * | 1999-12-21 | 2002-08-09 | Capsulis | MIXED STRUCTURES RESULTING FROM THE INCORPORATION OF A BIOLOGICAL MACROMOLECULE, PARTICULARLY DNA, IN A STRUCTURED PHASE OF AMPHIPHILES AND VESICLES OBTAINED FROM THESE STRUCTURES |
US11241767B2 (en) | 2018-06-01 | 2022-02-08 | Fives Landis Corp. | Pendulum grinding machine |
CN110370131B (en) * | 2019-07-17 | 2021-04-02 | 浙江晟益封头有限公司 | Head polishing all-in-one |
CN110900345B (en) * | 2019-11-05 | 2021-06-01 | 苏州科亿嘉新技术开发有限公司 | High-temperature-resistant automobile spark plug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1740551A (en) * | 1925-05-09 | 1929-12-24 | Erdis G Robinson | Lens-beveling attachment for lens-edge-grinding machines |
US1843301A (en) * | 1929-09-28 | 1932-02-02 | Norton Co | Cam lapping machine |
CH652334A5 (en) * | 1983-05-13 | 1985-11-15 | Liotte Rep Etrangenes Ets | GRINDING MACHINE. |
DE4137924C2 (en) * | 1991-11-18 | 1997-12-04 | Schaudt Maschinenbau Gmbh | Method and device for numerically controlled grinding of cams of a camshaft |
DE4426452C1 (en) * | 1994-07-26 | 1995-09-07 | Erwin Junker | Process for grinding concave flanks of cams of camshaft |
DE19516711A1 (en) * | 1995-05-06 | 1996-11-07 | Schaudt Maschinenbau Gmbh | Machine tool with two work spindles |
-
1996
- 1996-06-18 GB GBGB9612734.5A patent/GB9612734D0/en active Pending
-
1997
- 1997-06-18 EP EP97927269A patent/EP0896552B2/en not_active Expired - Lifetime
- 1997-06-18 DE DE69706974T patent/DE69706974T3/en not_active Expired - Lifetime
- 1997-06-18 ES ES97927269T patent/ES2162306T5/en not_active Expired - Lifetime
- 1997-06-18 WO PCT/GB1997/001652 patent/WO1997048523A1/en active IP Right Grant
Non-Patent Citations (11)
Title |
---|
Catalogue SCHAUDT-SMW"CF41CBN", marked 0396 (page 16 ) † |
Fax received by SCHAUDT-SMW 31.01.1996 with list of UK invitees † |
Fertigung, May 1996 , pages 86 and 88 † |
Fertigungsmaschinen und -verfahren May 1996 , pages 40 and 41 † |
Maschinenmarkt 13 May 1996, article Schaudt Maschinenbau GmbH † |
NCFertigung April 1996, 2 pages starting from page 56 † |
Presentation SCHAUDT/MERCEDES of 11.05.1995 † |
SCHAUDT-SMW internal communication of 23.02.1996 re. invitees † |
SCHAUDT-SMW invitation to Open Days from 4th to 8th March 1996 † |
SCHAUDT-SMW list of invitees as of 08.02.1996 to Open Days † |
VDI-Z Integrierte Produktion, no date, "Schleifen von Nockenwellen" † |
Also Published As
Publication number | Publication date |
---|---|
EP0896552A1 (en) | 1999-02-17 |
DE69706974D1 (en) | 2001-10-31 |
ES2162306T3 (en) | 2001-12-16 |
DE69706974T3 (en) | 2006-10-26 |
EP0896552B1 (en) | 2001-09-26 |
GB9612734D0 (en) | 1996-08-21 |
DE69706974T2 (en) | 2002-04-04 |
ES2162306T5 (en) | 2005-10-16 |
WO1997048523A1 (en) | 1997-12-24 |
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