EP2890521A2 - Vorrichtung und verfahren zum schleifen eines oberflächenabschnitts eines produkts - Google Patents
Vorrichtung und verfahren zum schleifen eines oberflächenabschnitts eines produktsInfo
- Publication number
- EP2890521A2 EP2890521A2 EP13756373.0A EP13756373A EP2890521A2 EP 2890521 A2 EP2890521 A2 EP 2890521A2 EP 13756373 A EP13756373 A EP 13756373A EP 2890521 A2 EP2890521 A2 EP 2890521A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- product
- grindstone
- holding device
- ground
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 16
- 239000004575 stone Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000003860 storage Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
- B24B27/04—Grinding machines or devices in which the grinding tool is supported on a swinging arm
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/005—Portal grinding machines
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
Definitions
- the invention relates to a device for grinding a particular non-uniform, under a
- the invention relates to a method for assessing the quality of a surface portion of a product.
- Metal products are of special interest to scratches, craters, bumps, ripples and other surface defects. This applies in particular to the assessment of surfaces of steel or light metal flat products to whose
- the surfaces to be bonded here include, for example, those surfaces on which elevations in the form of waves, folds, bumps, etc. are present, which deform due to the elasticity or shape of the material of which the respective product consists, under pressure.
- Surfaces are the surfaces of flat metal products, such as steel or light metal sheets or strips, which are partly wavy due to production. Due to the small thickness of such flat products, the waves or other form errors when grinding under the pressure of the grindstone give way elastically, and then jump back to its original shape.
- Conditions may exist, in particular, when the surface of flat steel products is to be investigated, which are present as strip material and are to be investigated in a continuous pass. In such
- Metal bands can as a result of a previous
- Centimeters present These deviations occur locally limited or over a large area in appearance.
- pivot axes aligned at right angles to one another.
- the swivel axes are included - -
- Glass panes can be gimballed as rotating polishing plates used as grinding tools, so that when pressed against the polishing tool on the
- abrasive surface can distribute the contact pressure better over the grinding surface.
- Grinder provided workpiece holder provided a 3-gimbal mounted recording.
- the object was to provide a device for grinding a surface portion of the type specified, in which by simple means - -
- An inventive device for grinding a surface portion of a product, in particular a metal product thus has in accordance with the prior art described above
- the grindstone is typically a block-shaped, block-like abrasive tool having a rectangular, elongated abrasive surface. It can, however - -
- the device according to the invention comprises a holding device, which in turn is supported by a device for placing the grinding stone with its grinding surface on the surface portion to be ground.
- the device according to the invention has a
- Relative movement can be effected, for example, by the grinding tool being moved relative to
- the product is moved relative to the resting in relation to the material removal movement movement tool or both the grinding tool and the product so that between them a relative movement.
- Holding device in which the grindstone is mounted gimbal is held on the device for placement on the surface to be assessed such that when projecting onto the surface to be sanded, the pivot axes of the gimbal bearing starting from a position in which a pivot axis at right angles and the other pivot axis axially parallel to the direction of the linear relative movement of the grindstone and - -
- ⁇ are aligned to be sanded surface portion, are pivoted together about a grinding angle ß, which is greater than 0 ° and less than 90 °.
- Method for preparing a surface section of a product for assessing its surface quality the following steps: a) Providing the product to be examined. b) It becomes a gimbal in a holding device
- the grindstone is pivoted with its gimbal bearing with respect to the surface to be assessed at a swivel angle ß, so that at a
- Material removal is done.
- the material removal is - -
- the invention is particularly suitable for such products in which locally or large surface occurring geometry errors, such as waves, dents, wrinkles or
- the grinding stone with its cardan bearing is pivoted about a pivot axis oriented in normal operation normal to the grinding surface to be examined about a pivot angle ß, which is greater than 0 ° and less than 90 °.
- ß pivot angle
- none of the pivot axes of the gimbals of the grinding stone are aligned axially parallel with respect to the direction of the instantaneous movement or transversely thereto.
- Pivoting prevents the whetstone from hitting on surface waves or other disturbances by an automatic pivoting around at least one of the pivot axes of the gimbal bearing pivoted so far that it canted over his first run-off from the surface to be examined in the direction of movement edge. Such canting must be prevented as it may cause damage to the surface or grindstone to be inspected. Also already causes a slight tilting that the
- the grindstone is firmly connected to the respective device, which causes the relative movement between the grindstone and surface to be sanded. It is ensured by the invention that the grinding medium automatically adapts as quickly as possible to the respective surface geometry of the surface to be ground. Elaborate avoidance mechanisms are not required. Rather, a simple cardanic storage and one based on the level of
- the suspension of the grinding stone which is pivoted according to the invention, is suitable for all grinding operations, regardless of the direction of the relative movement between the grinding stone and the surface portion to be ground.
- the grinding tool performs arcuate or linearly aligned grinding movements. Regardless of the type of movement causes between the surface to be ground and the
- Swivel pivot axis of the cardan bearing Due to the pivoting of the pivot axes of the cardan bearing according to the invention the respective effective moment about the pivot axes is limited so that a tilting or tilting and a concomitant lifting the
- a force sensor In order to keep constant the grinding force necessary for grinding during grinding, a force sensor can be provided which clamps the between
- the sensor supplies the measured values acquired by it to a control and regulating device which, in the event of a deviation of the measured values detected from a setpoint value, regulates the pressing force such that it again corresponds to the setpoint specifications.
- the control device a signal to the device for setting up the
- Holding means to be held on the means for placing, that exerted on the AufSetz Painless Setz
- no or only a defined pressure force and all beyond going Andschreib be determined by the weights provided in each case.
- the device for mounting the grindstone is formed by a conventional robot arm, which carries the holding device at its free end. Because of the mobility inherent in such a robotic arm, it is particularly easy to reach and grind different surface portions of the surface to be examined to perform random surface quality evaluations.
- the grindstone may be carried with the retainer by a carriage which can be reciprocated in a single direction or in two directions orthogonal to one another, in particular in the manner of a cross slide.
- the grinding angle ß to be selected in each case depends on the type of the respective surface, the type of
- the grinding angle can be determined once empirically and
- the swiveling angle ⁇ in such a way that the abrasive material has a rectangular, in particular elongated, grinding surface in such a way that, in the case of a projection, it is to be ground on the grinding wheel
- Grinding stone can be avoided in particular when the grinding angle 45-80 °, in particular at least 60 °. For example, with the grinding angle at most 70 °, for a grindstone having a rectangular, elongated grinding surface
- Holding device with the gimbal bearing is pivotable about a pivot axis which is normal in operation to be sanded surface portion, d. H. relative to the main plane of linear relative motion between
- the invention is particularly suitable for the preparation of surfaces of flat steel products carried out in the course of the optical assessment of surface defects.
- the invention is based on
- Fig. 2 is a flat steel product when grinding a
- Steel sheet sample of present product 4 comprises a
- Holding device 5 which is held at the free end of a robot arm 6.
- the holding device 5 is fastened to a pivoting device 7 which is released from the control of the robot arm 6 (not shown here)
- Locking pivot position can.
- the holding device 5 a U-shaped bracket 9, which is rotatably coupled to the pivoting device 7, a rectangular, elongated frame 10, which between the legs of the support member 9 to a
- Swivel axis Y is pivotally mounted, and a
- the grindstone 8 is seated such that its longitudinal sides 12,13 are arranged axially parallel to the longitudinal sides 14,15 of the frame 10.
- Gritstone 8 is accordingly free on the side facing away from the pivoting device 7 side
- the grindstone holder 11 itself is pivotally mounted in the frame 10 about a pivot axis X, which is aligned at right angles transversely to the other two pivot axes Y, Z.
- the pivot axis X is positioned centrally with respect to the longitudinal sides 14,15 of the frame 10, while the pivot axis Y is arranged centrally with respect to the narrow sides 17,18 of the frame 10.
- the robot arm 6 sets the
- the holding device 5 is pivoted about the Z axis so that when projecting onto the surface 3 to be ground (FIG. 2) the pivot axes X, Y of the gimbal bearing starting from the position shown by dotted lines in FIG the one pivot axis Y is aligned at right angles transversely and the other pivot axis X of the gimbal bearing axially parallel to the direction L of the linear relative movement of the grindstone 8 and sanded surface portion 2, together about the pivot axis Z to a
- Grinding angle ß are pivoted, which is greater than 0 ° and less than 90 °. Specifically is described here - -
- the robot arm 6 served not only for depositing and lifting the holding device 5 with the grindstone 8, but also for the grinding required here
- the contact pressure required for the desired material removal was also applied via the robot arm 6.
- Control device of the robot arm 6 passed. This has then regulated the contact pressure so that it was always in the optimum target range.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012108126.3A DE102012108126A1 (de) | 2012-08-31 | 2012-08-31 | Vorrichtung und Verfahren zum Schleifen eines Oberflächenabschnitts eines Produkts |
| PCT/EP2013/067537 WO2014033061A2 (de) | 2012-08-31 | 2013-08-23 | Vorrichtung und verfahren zum schleifen eines oberflächenabschnitts eines produkts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2890521A2 true EP2890521A2 (de) | 2015-07-08 |
| EP2890521B1 EP2890521B1 (de) | 2018-10-10 |
Family
ID=49111140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13756373.0A Not-in-force EP2890521B1 (de) | 2012-08-31 | 2013-08-23 | Vorrichtung und verfahren zum schleifen eines oberflächenabschnitts eines produkts |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2890521B1 (de) |
| DE (1) | DE102012108126A1 (de) |
| WO (1) | WO2014033061A2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015120870A1 (de) * | 2015-12-02 | 2017-06-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vorrichtung und Verfahren zur Oberflächenbearbeitung |
| JP6663255B2 (ja) * | 2016-03-10 | 2020-03-11 | 新明東北マシナリー株式会社 | スカーフサンディング用研削装置 |
| DE102019115562A1 (de) * | 2019-06-07 | 2020-12-10 | Ferrobotics Compliant Robot Technology Gmbh | Ausgleich von lagetoleranzen beim der robotergestützten oberflächenbearbeitung |
| DE102024000879A1 (de) * | 2024-03-18 | 2025-09-18 | Hochschule für angewandte Wissenschaften München, Körperschaft des öffentlichen Rechts | Endeffektor mit optimierter Nachführung eines Werkzeugs und Verfahren zum Bearbeiten einer Werkstückoberfläche |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3601636A1 (de) * | 1986-01-21 | 1987-07-23 | Hensel Eisenwerk | Schleifkopf |
| DE3711278A1 (de) * | 1987-04-03 | 1988-10-13 | Daimler Benz Ag | Bandschleifeinrichtung zum verputzen von schweissraupen an blechbauteilen, insbesondere an fahrzeugkarosserien |
| JPH0890397A (ja) * | 1994-09-21 | 1996-04-09 | Kawasaki Steel Corp | 鋼板の微小欠陥検出用砥石掛け構造 |
| JPH09103943A (ja) * | 1995-08-02 | 1997-04-22 | Sumitomo Metal Ind Ltd | 鋼板表面検査用砥石掛け装置及び方法 |
| JP2009502721A (ja) | 2005-08-02 | 2009-01-29 | ショット アクチエンゲゼルシャフト | 板ガラスを後処理する方法及び装置 |
| DE102007044077A1 (de) * | 2007-09-14 | 2009-03-19 | Strecon A/S | Poliervorrichtung |
| DE102008063575B4 (de) | 2008-12-18 | 2010-11-11 | Antonio Basile Gmbh | Automatisches Drehherz |
-
2012
- 2012-08-31 DE DE102012108126.3A patent/DE102012108126A1/de not_active Withdrawn
-
2013
- 2013-08-23 EP EP13756373.0A patent/EP2890521B1/de not_active Not-in-force
- 2013-08-23 WO PCT/EP2013/067537 patent/WO2014033061A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014033061A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012108126A1 (de) | 2014-03-06 |
| EP2890521B1 (de) | 2018-10-10 |
| WO2014033061A2 (de) | 2014-03-06 |
| WO2014033061A3 (de) | 2014-06-26 |
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