US20110003539A1 - Apparatus for double-sided grinding - Google Patents
Apparatus for double-sided grinding Download PDFInfo
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- US20110003539A1 US20110003539A1 US12/734,943 US73494308A US2011003539A1 US 20110003539 A1 US20110003539 A1 US 20110003539A1 US 73494308 A US73494308 A US 73494308A US 2011003539 A1 US2011003539 A1 US 2011003539A1
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- 238000003754 machining Methods 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Classifications
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- 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
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
- B24B7/26—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for simultaneously grinding or polishing opposite faces of continuously travelling sheets or bands
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- 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
- B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
-
- 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
Definitions
- the present invention concerns a grinding apparatus for machining a workpiece, including an apparatus frame supporting a grinding station with a number of grinding heads with associated grinding elements arranged such that the grinding elements are in contact with one surface of the workpiece at the passage of the workpiece through the grinding apparatus, and an endless conveying means for the grinding heads, and a roller table for supporting the workpiece, where the grinding apparatus includes a further grinding station with grinding heads arranged such that the grinding elements are in contact with the opposite surface of the workpiece at the passage of the workpiece across the roller table, where the roller table includes a first and a second set of rollers, and where there is an interspace between two set of rollers, allowing passage of the workpiece between the two set of rollers.
- Apparatuses for polishing flat glass plates that are conveyed continuously from a production apparatus for glass production are known. Examples of such are known from GB 469951, U.S. Pat. No. 3,036,410, U.S. Pat. No. 3,177,625 and DE 670343.
- a disadvantage of these apparatuses is that they are not suited in connection with grinding workpieces with limited length as the workpiece is not sufficiently supported in order to avoid substantial deflection during the run until the leading edge of the workpiece has passed a grinding station.
- the grinding apparatus is provided with two grinding stations disposed such that one grinding station machines one side of the workpiece and that the other grinding station machines the other, opposite side of the workpiece.
- the grinding stations are arranged in series such that the workpiece is treated by both grinding stations during the passage of the workpiece through the grinding apparatus. Treatment of both sides of the workpiece is hereby achieved in one run.
- the grinding elements apply a force to the workpiece that necessitates support of the workpiece.
- the roller table functions as this support, but since the grinding elements from the two grinding stations act on the workpiece with oppositely directed forces, it is necessary with two sets of rollers, one above the other, such that the workpiece is supported in both directions when disposed in the interspace between the two sets of rollers.
- the grinding stations are each disposed between rollers on the inlet and outlet sides, respectively, of the workpiece. This ensures effective retention of the workpiece during the entire run.
- One grinding station is provided between rollers in the first set with a height of the grinding elements such that they are approximately flush with a plane tangent to the rollers, and which coincides with the side of the workpiece facing the grinding elements and thereby worked by the grinding station.
- the other grinding station is disposed between rollers in the other set for machining the other side of the workpiece.
- the height of the grinding stations in relation to the machined side of the workpiece is significant to the power of the grinding action, as this determines how strongly the grinding elements are to press on the workpiece.
- the workpiece is securely supported during insertion in the grinding station.
- the two rollers in each of the two sets opposite each other ensure that the workpiece is securely supported, even though it projects from its clamping between the two rollers in each set. Strong deflection of the workpiece and consequent reduction of the grinding capability is thereby obviated.
- the leading edge of the workpiece will, after passage of the grinding element, engage between at least two rollers in each set opposite each other at the outlet side of the grinding element.
- Such a grinding apparatus may machine workpieces with a limited length.
- the length of the smallest workpiece to be processed by the grinding apparatus is determined in that the workpiece simultaneously is to engage two rollers from each set opposite each other on at one side of the grinding element, and two rollers opposite each other at the other side of the grinding element, where the last-mentioned rollers are two single rollers opposite each other.
- Rollers in each of the two sets may be disposed within the grinding station.
- the grinding apparatus according to the invention is peculiar in that the two rollers in the two set of rollers are resilient for establishing a squeezing action on the workpiece.
- the two rollers in the two set of rollers are resilient for establishing a squeezing action on the workpiece.
- the resilient properties of the rollers have to be adapted to the variations in thickness that are expected for the workpiece.
- the grinding apparatus according to the invention is peculiar in that the two set of rollers are disposed in approximately parallel, horizontal planes. This is necessary for the workpiece to pass through the grinding apparatus without being jammed or changing its direction.
- the grinding apparatus according to the invention is peculiar in that the rollers in the two set of rollers are disposed opposite each other. Hereby it becomes easier for an operator to insert the workpiece. Besides, deflection of the workpiece during passage of the individual rollers is avoided.
- the grinding apparatus according to the invention is peculiar in that the two set of rollers are provided in an arrangement that enables adjustment of the height of the interspace between the two set of rollers. If the grinding apparatus is to be used for different workpieces, it is suitable to have this adjustment possibility as workpieces with different thickness may occur.
- the grinding apparatus according to the invention is peculiar in that the height of the interspace between the two set of rollers is adjusted by means of actuators.
- actuators By using actuators for height adjustment of the interspace, limitations caused by the operators lifting capacity are avoided. If it is necessary with many daily readjustments of the grinding apparatus to various workpieces, this may occur easily and rapidly by means of actuators.
- actuators may be pneumatic, hydraulic or electric.
- the grinding apparatus according to the invention is peculiar in that the rollers are provided with a drive means for advancing the workpiece, the drive means optionally being a belt, a toothed belt, a chain or a toothed wheel.
- the drive means optionally being a belt, a toothed belt, a chain or a toothed wheel.
- the grinding apparatus according to the invention is peculiar in that a unit for sucking grinding dust is provided in connection with each grinding station and at each area where the grinding elements are in contact with the workpiece.
- a unit for sucking grinding dust is provided in connection with each grinding station and at each area where the grinding elements are in contact with the workpiece.
- the grinding apparatus according to the invention is peculiar in that a guide rail for the workpiece is provided on each suction unit.
- a guide rail for the workpiece is provided on each suction unit.
- the grinding apparatus according to the invention is peculiar in that the grinding stations are provided in an arrangement that enables adjustment of the height of the grinding elements in relation to the surface of the workpiece, manually or by actuators. Hereby it becomes possible to adjust the grinding effect. This may be particularly advantageous in connection with shifting between coarse and fine grinding and with changing between different materials.
- the grinding apparatus may be used for various types of work pieces, such as tabletops, closet doors or similar, and grinding or sanding of different types of materials such as wood, metal, glass, plastic, composite or similar.
- the grinding heads may advantageously be arranged such that the direction of rotation of two grinding heads in succession is clockwise and counterclockwise, respectively. Hereby is achieved a very uniform polishing/deburring. As the grinding heads have separate electric motors, the direction of rotation may easily be changed for individual grinding heads.
- FIG. 1 shows a perspective view of a grinding apparatus according to the invention
- FIG. 2 shows a perspective view of a grinding station
- FIG. 3 shows a side view of the grinding apparatus
- FIG. 4 shows an elementary sketch of the drive system for the rollers
- FIG. 5 shows a draft of the suction and the guide rail.
- FIG. 1 shows a grinding apparatus 1 with an apparatus frame 2 which includes a roller table 9 in the entire length of the grinding apparatus, a first grinding station 3 and a second grinding station 10 .
- Each grinding station contains a number of grinding heads 4 with associated grinding elements 5 .
- the grinding stations are more closely described in connection with the description of FIG. 2 .
- the workpiece is placed on the roller table 9 for inserting in the grinding apparatus 1 by an operator 24 .
- the workpiece is supported by a first set of rollers 12 .
- a second set of rollers 13 retain the workpiece in interaction with the first set of rollers during the run of the workpiece through the grinding apparatus.
- the rollers 16 can be provided in an arrangement 17 that enables adjusting the height of the interspace between the two sets of rollers 12 , 13 .
- the height can be adjusted manually or by a number of actuators 18 .
- These actuators may e.g. be pneumatic, hydraulic or electric.
- the grinding stations 3 , 10 are provided in an arrangement 22 that allow vertical adjustment of the grinding stations 3 , 10 , as thereby allowance can be made for workpieces with different thickness and different requirements to grinding action.
- the height may be adjusted manually by an operator, or by means of actuators 23 which are preferred due to the weight of the grinding stations. These actuators may also be pneumatic, hydraulic or electric.
- FIG. 2 appears a grinding station 3 , 10 free from its apparatus frame.
- a number of grinding heads 4 with associated grinding elements 5 are provided in a roundabout 25 with an endless conveying means 8 .
- a moving motor with gear 26 drives the grinding heads 4 around the grinding station while at the same time the grinding elements rotate by means of the grinding heads, whereby an epicycloidal movement of the individual grinding elements 5 is established.
- FIG. 3 On FIG. 3 is shown a side view of the grinding apparatus 1 with a workpiece 6 during a run.
- the grinding apparatus includes a first grinding station 3 disposed between the rollers 16 in a first set of rollers 12 machining one surface 7 of the workpiece, and a second grinding station 10 disposed between a second set of rollers 13 machining the opposite surface 11 of the workpiece.
- the grinding heads 4 in each grinding station are provided with grinding elements 5 which are adapted to the grinding task.
- the grinding elements 5 in the first grinding station 3 are of different combination.
- the height of the interspace 14 between the two sets of rollers 12 , 13 is adapted to the thickness of the workpiece.
- the spacing 15 between individual rollers in each set 12 , 13 is adapted such that several succeeding rollers 16 in each set 12 , 13 are in simultaneous contact with the opposing faces 7 , 11 of the workpiece.
- FIG. 4 shows the drive mechanism 19 for the two sets of rollers 12 , 13 .
- the first set of rollers 12 are driven by a belt.
- the second set of rollers 13 are freewheeling.
- the workpiece is driven forward as the second set of rollers 13 provide retention and ensure the required contact between workpiece and the first set of rollers 12 which rotate.
- the grinding heads 4 and the grinding elements 5 are disposed in an interspace between the one set of rollers 13 .
- FIG. 5 shows a detail of the grinding apparatus in one of the areas where the grinding is performed.
- a suction unit 20 is provided between the rollers in the first set of rollers 12 and the grinding elements 5 are disposed opposite the suction unit 20 between the rollers in the second set of rollers 13 .
- a guide rail 21 ensuring engagement between the rollers after workpiece passage of a grinding area is provided at the outlet side of the suction unit 20 .
Abstract
A grinding apparatus for machining a workpiece (6), including an apparatus frame (2) supporting a grinding station (3) with a number of grinding heads (4) with associated grinding elements (5) arranged such that the grinding elements (5) are in contact with one surface (7) of the workpiece at the passage of the workpiece through the grinding apparatus (1), and an endless conveying means (8) for the grinding heads (4), and a roller table (9) for supporting the workpiece (6), where the grinding apparatus (1) includes a further grinding station (10) with grinding heads (4) arranged such that the grinding elements (5) are in contact with the opposite surface (11) of the workpiece at the passage of the workpiece across the roller table (9), where the roller table includes a first (12) and a second set of rollers (13), and where there is an interspace (14) between two set of rollers (12, 13), allowing passage of the workpiece between the two set of rollers (12, 13), wherein spacing (15) between individual rollers (16) in each of the two sets of rollers (12, 13) is arranged such that a plurality of the rollers (16) from each of the two sets of rollers (12, 13) are simultaneously in contact with the opposing surfaces (7, 11), where a first grinding station (3) is provided between two succeeding rollers in the first set (12) and a second grinding station (10) is provided between two succeeding rollers in the second set (13).
Description
- The present invention concerns a grinding apparatus for machining a workpiece, including an apparatus frame supporting a grinding station with a number of grinding heads with associated grinding elements arranged such that the grinding elements are in contact with one surface of the workpiece at the passage of the workpiece through the grinding apparatus, and an endless conveying means for the grinding heads, and a roller table for supporting the workpiece, where the grinding apparatus includes a further grinding station with grinding heads arranged such that the grinding elements are in contact with the opposite surface of the workpiece at the passage of the workpiece across the roller table, where the roller table includes a first and a second set of rollers, and where there is an interspace between two set of rollers, allowing passage of the workpiece between the two set of rollers.
- By industrial grinding or sanding of workpieces that include edges, roundings and surfaces, e.g. table tops or doors or other items with limited length, and where these edges, roundings and faces are disposed on opposite sides of the workpiece, this will require grinding/sanding of both sides of the workpiece. On conventional grinding apparatuses, this requires two runs through the grinding apparatus in that it is necessary first to perform grinding of one side of the workpiece, after which the workpiece is turned and the grinding is repeated on the other side of the workpiece.
- The drawback of this is reduced machine capacity and need for increased handling of workpieces that require double-sided machining, compared with workpieces that only require one-sided machining.
- Apparatuses for polishing flat glass plates that are conveyed continuously from a production apparatus for glass production are known. Examples of such are known from GB 469951, U.S. Pat. No. 3,036,410, U.S. Pat. No. 3,177,625 and DE 670343. A disadvantage of these apparatuses is that they are not suited in connection with grinding workpieces with limited length as the workpiece is not sufficiently supported in order to avoid substantial deflection during the run until the leading edge of the workpiece has passed a grinding station.
- It is the object of the present invention to indicate a grinding apparatus that enables grinding of both sides of a workpiece requiring double-sided treatment, and which has a limited length such that grinding and/or deburring of the workpiece may be completed in one run.
- This is achieved by means of a grinding apparatus of the type mentioned in the introduction, which is peculiar in that spacing between individual rollers in each of the two sets of rollers is arranged such that a plurality of the rollers from each of the two sets of rollers are simultaneously in contact with the opposing surfaces, where a first grinding station is provided between two succeeding rollers in the first set and a second grinding station is provided between two succeeding rollers in the second set.
- The grinding apparatus is provided with two grinding stations disposed such that one grinding station machines one side of the workpiece and that the other grinding station machines the other, opposite side of the workpiece. The grinding stations are arranged in series such that the workpiece is treated by both grinding stations during the passage of the workpiece through the grinding apparatus. Treatment of both sides of the workpiece is hereby achieved in one run.
- The grinding elements apply a force to the workpiece that necessitates support of the workpiece. The roller table functions as this support, but since the grinding elements from the two grinding stations act on the workpiece with oppositely directed forces, it is necessary with two sets of rollers, one above the other, such that the workpiece is supported in both directions when disposed in the interspace between the two sets of rollers. The grinding stations are each disposed between rollers on the inlet and outlet sides, respectively, of the workpiece. This ensures effective retention of the workpiece during the entire run. One grinding station is provided between rollers in the first set with a height of the grinding elements such that they are approximately flush with a plane tangent to the rollers, and which coincides with the side of the workpiece facing the grinding elements and thereby worked by the grinding station. In a corresponding way, the other grinding station is disposed between rollers in the other set for machining the other side of the workpiece. The height of the grinding stations in relation to the machined side of the workpiece is significant to the power of the grinding action, as this determines how strongly the grinding elements are to press on the workpiece.
- It is particularly advantageous to dispose at least two successive rollers opposite each other in each of the two sets of rollers at the inlet side before a grinding element and at least two successive rollers opposite each other in each of the two sets of rollers at the outlet side after a grinding element. Consequently, in total at least four rollers at each their side of a grinding element.
- Hereby is achieved that the workpiece is securely supported during insertion in the grinding station. When grinding is commenced from the leading edge of the workpiece during a run, the two rollers in each of the two sets opposite each other ensure that the workpiece is securely supported, even though it projects from its clamping between the two rollers in each set. Strong deflection of the workpiece and consequent reduction of the grinding capability is thereby obviated. The leading edge of the workpiece will, after passage of the grinding element, engage between at least two rollers in each set opposite each other at the outlet side of the grinding element. Finally, when the trailing edge of the workpiece loses its engagement with the two rollers in each set on the inlet side of the grinding element, it will still be securely supported, even though it projects from its clamping between the two rollers in each set at the outlet side of the grinding element.
- Such a grinding apparatus may machine workpieces with a limited length. The length of the smallest workpiece to be processed by the grinding apparatus is determined in that the workpiece simultaneously is to engage two rollers from each set opposite each other on at one side of the grinding element, and two rollers opposite each other at the other side of the grinding element, where the last-mentioned rollers are two single rollers opposite each other.
- Rollers in each of the two sets may be disposed within the grinding station.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the two rollers in the two set of rollers are resilient for establishing a squeezing action on the workpiece. Hereby it becomes possible to retain the workpiece during the run. Another result is that there is still contact between roller and workpiece, even by workpieces with variations in thickness. The resilient properties of the rollers have to be adapted to the variations in thickness that are expected for the workpiece.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the two set of rollers are disposed in approximately parallel, horizontal planes. This is necessary for the workpiece to pass through the grinding apparatus without being jammed or changing its direction.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the rollers in the two set of rollers are disposed opposite each other. Hereby it becomes easier for an operator to insert the workpiece. Besides, deflection of the workpiece during passage of the individual rollers is avoided.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the two set of rollers are provided in an arrangement that enables adjustment of the height of the interspace between the two set of rollers. If the grinding apparatus is to be used for different workpieces, it is suitable to have this adjustment possibility as workpieces with different thickness may occur.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the height of the interspace between the two set of rollers is adjusted by means of actuators. By using actuators for height adjustment of the interspace, limitations caused by the operators lifting capacity are avoided. If it is necessary with many daily readjustments of the grinding apparatus to various workpieces, this may occur easily and rapidly by means of actuators. These actuators may be pneumatic, hydraulic or electric.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the rollers are provided with a drive means for advancing the workpiece, the drive means optionally being a belt, a toothed belt, a chain or a toothed wheel. The advantage of providing the rollers with a drive means is that the operator is not to ensure manual advancing of the workpiece during a run through the grinding apparatus. This makes the grinding apparatus more safe in use and reduces the need for intervention by operators.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that a unit for sucking grinding dust is provided in connection with each grinding station and at each area where the grinding elements are in contact with the workpiece. During use of grinding apparatuses of the described type, large amounts of grinding dust are released. With consideration to the working environment, this puts limitations to staying in the vicinity of the grinding machine. Therefore, it is expedient to remove as much as possible of this dust. The disposition of the unit for suction of grinding dust provides that most possible dust is removed as it is placed closest to the area in the grinding apparatus where the dust is generated.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that a guide rail for the workpiece is provided on each suction unit. When the workpiece passes a grinding area where also a suction unit is provided, there is no possibility of supporting the workpiece. Thus a risk of deflection of the workpiece is present. The deflection becomes greater the closer the workpiece comes to the rollers at the outlet side of the grinding station. A guide rail is provided before the rollers at the outlet side of the grinding station in order to avoid jamming of the workpiece and to ensure engagement with the rollers. The guide rail counteracts possible deflection of the workpiece and disposes it opposite the interspace between the two sets of rollers.
- According to a further embodiment, the grinding apparatus according to the invention is peculiar in that the grinding stations are provided in an arrangement that enables adjustment of the height of the grinding elements in relation to the surface of the workpiece, manually or by actuators. Hereby it becomes possible to adjust the grinding effect. This may be particularly advantageous in connection with shifting between coarse and fine grinding and with changing between different materials.
- The grinding apparatus may be used for various types of work pieces, such as tabletops, closet doors or similar, and grinding or sanding of different types of materials such as wood, metal, glass, plastic, composite or similar.
- The grinding heads may advantageously be arranged such that the direction of rotation of two grinding heads in succession is clockwise and counterclockwise, respectively. Hereby is achieved a very uniform polishing/deburring. As the grinding heads have separate electric motors, the direction of rotation may easily be changed for individual grinding heads.
- The invention is explained more closely in the following with reference to the drawings, where:
-
FIG. 1 shows a perspective view of a grinding apparatus according to the invention; -
FIG. 2 shows a perspective view of a grinding station; -
FIG. 3 shows a side view of the grinding apparatus; -
FIG. 4 shows an elementary sketch of the drive system for the rollers; and -
FIG. 5 shows a draft of the suction and the guide rail. -
FIG. 1 shows agrinding apparatus 1 with anapparatus frame 2 which includes a roller table 9 in the entire length of the grinding apparatus, a first grindingstation 3 and a second grindingstation 10. Each grinding station contains a number of grindingheads 4 with associatedgrinding elements 5. The grinding stations are more closely described in connection with the description ofFIG. 2 . - The workpiece is placed on the roller table 9 for inserting in the
grinding apparatus 1 by anoperator 24. The workpiece is supported by a first set ofrollers 12. A second set ofrollers 13 retain the workpiece in interaction with the first set of rollers during the run of the workpiece through the grinding apparatus. Therollers 16 can be provided in anarrangement 17 that enables adjusting the height of the interspace between the two sets ofrollers actuators 18. These actuators may e.g. be pneumatic, hydraulic or electric. - The grinding
stations arrangement 22 that allow vertical adjustment of the grindingstations actuators 23 which are preferred due to the weight of the grinding stations. These actuators may also be pneumatic, hydraulic or electric. - On
FIG. 2 appears a grindingstation heads 4 with associatedgrinding elements 5 are provided in aroundabout 25 with an endless conveyingmeans 8. A moving motor withgear 26 drives the grindingheads 4 around the grinding station while at the same time the grinding elements rotate by means of the grinding heads, whereby an epicycloidal movement of the individualgrinding elements 5 is established. - On
FIG. 3 is shown a side view of thegrinding apparatus 1 with aworkpiece 6 during a run. The grinding apparatus includes a first grindingstation 3 disposed between therollers 16 in a first set ofrollers 12 machining onesurface 7 of the workpiece, and a second grindingstation 10 disposed between a second set ofrollers 13 machining theopposite surface 11 of the workpiece. The grinding heads 4 in each grinding station are provided withgrinding elements 5 which are adapted to the grinding task. In the shown embodiment, the grindingelements 5 in the first grindingstation 3 are of different combination. The height of theinterspace 14 between the two sets ofrollers rollers 16 in each set 12, 13 are in simultaneous contact with the opposing faces 7, 11 of the workpiece. -
FIG. 4 shows thedrive mechanism 19 for the two sets ofrollers rollers 12 are driven by a belt. The second set ofrollers 13 are freewheeling. The workpiece is driven forward as the second set ofrollers 13 provide retention and ensure the required contact between workpiece and the first set ofrollers 12 which rotate. The grinding heads 4 and thegrinding elements 5 are disposed in an interspace between the one set ofrollers 13. -
FIG. 5 shows a detail of the grinding apparatus in one of the areas where the grinding is performed. Asuction unit 20 is provided between the rollers in the first set ofrollers 12 and thegrinding elements 5 are disposed opposite thesuction unit 20 between the rollers in the second set ofrollers 13. Aguide rail 21 ensuring engagement between the rollers after workpiece passage of a grinding area is provided at the outlet side of thesuction unit 20.
Claims (9)
1. A grinding apparatus for machining a workpiece (6), including an apparatus frame (2) supporting a grinding station (3) with a number of grinding heads (4) with associated grinding elements (5), arranged such that the grinding elements (5) are in contact with one surface (7) of the workpiece at the passage of the workpiece through the grinding apparatus (1), and an endless conveying means (8) for the grinding heads (4), and a roller table (9) for supporting the workpiece (6), where the grinding apparatus (1) includes a further grinding station (10) with grinding heads (4) arranged such that the grinding elements (5) are in contact with the opposite surface (11) of the workpiece at the passage of the workpiece across the roller table (9), where the roller table includes a first (12) and a second set of rollers (13), and where there is an interspace (14) between the two set of rollers (12, 13), allowing passage of the workpiece between the two set of rollers (12 ,13), wherein spacing (15) between individual rollers (16) in each of the two sets of rollers (12, 13) is arranged such that a plurality of the rollers (16) from each of the two sets of rollers (12, 13) are simultaneously in contact with the opposing surfaces (7, 11), that a first grinding station (3) is provided between two succeeding rollers in the first set (12) and a second grinding station (10) is provided between two succeeding rollers in the second set (13), that the two sets of rollers (12, 13) are provided in an arrangement (17) enabling adaptation of the height of the interspace (14) between the two sets of rollers (12, 13) and that the height of the interspace (14) between the two sets of rollers (12, 13) is adjusted by means of actuators (18).
2. Grinding apparatus according to claim 1 , wherein the rollers (16) in the two sets of rollers (12, 13) are resilient for establishing a squeezing action on the workpiece (6).
3. Grinding apparatus according to claim 1 , wherein the two sets of rollers (12, 13) are disposed in approximately parallel horizontal planes.
4. Grinding apparatus according to claim 1 , wherein the rollers (16) in the two sets of rollers (12, 13) are disposed opposite each other.
5. Grinding apparatus according to claim 1 , wherein the rollers (16) are provided with a drive means (19) for advancing the workpiece (6), the drive means optionally being a belt, a toothed belt, a chain or a toothed wheel.
6. Grinding apparatus according to claim 1 , wherein that a unit (20) for sucking grinding dust is provided in connection with each grinding station (3, 10) and at each area where the grinding elements (5) are in contact with the workpiece (6).
7. Grinding apparatus according to claim 6 , wherein a guide rail (21) for the workpiece is provided on each suction unit (20).
8. Grinding apparatus according to claim 1 , wherein the grinding stations (3, 10) are provided in an arrangement (22) that enables adjustment of the height of the grinding elements (5) in relation to the surface (7, 11) of the workpiece, manually or by actuators (23).
9-10. (canceled)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA200701731 | 2007-12-04 | ||
DK200701731A DK200701731A (en) | 2007-12-04 | 2007-12-04 | Double-sided grinding device |
PCT/DK2008/050288 WO2009071090A1 (en) | 2007-12-04 | 2008-12-04 | Apparatus for double-sided grinding |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110003539A1 true US20110003539A1 (en) | 2011-01-06 |
Family
ID=40717315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/734,943 Abandoned US20110003539A1 (en) | 2007-12-04 | 2008-12-04 | Apparatus for double-sided grinding |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110003539A1 (en) |
EP (1) | EP2227351A1 (en) |
DK (1) | DK200701731A (en) |
WO (1) | WO2009071090A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015144274A1 (en) * | 2014-03-25 | 2015-10-01 | Kuendig Ag | Device and method for the planet-like orbiting of rotating brushing, grinding, and polishing tools |
US20150321308A1 (en) * | 2012-03-29 | 2015-11-12 | Mitsubishi Heavy Industries, Ltd. | Polishing apparatus and method therefor |
CN111546168A (en) * | 2020-05-14 | 2020-08-18 | 刘琰 | Automatic grinding device of cylinder neodymium iron boron |
IT201900020424A1 (en) * | 2019-11-05 | 2021-05-05 | Biesse Spa | MACHINING CENTER WITH ELECTRONIC CONTROL, FOR THE WORKING OF GLASS SHEETS, SHEETS OF STONE MATERIAL, OR SHEETS OF SYNTHETIC MATERIAL |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016185374A1 (en) * | 2015-05-18 | 2016-11-24 | Ism S.R.L. | Machine and method for polishing/flattening slabs of natural stone or marble or granite or the like, said machine being provided with a mechanism for controlling the position of the spindle |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1666347A (en) * | 1926-09-03 | 1928-04-17 | Edward Ford Plate Glass Compan | Continuous glass-polishing means |
US1864823A (en) * | 1929-09-10 | 1932-06-28 | Heuze Charles | Grinding, smoothing, and polishing apparatus |
US2130255A (en) * | 1937-03-09 | 1938-09-13 | Pilkington Brothers Ltd | Apparatus for grinding and polishing strips of glass |
US2197104A (en) * | 1936-02-05 | 1940-04-16 | Pilkington Brothers Ltd | Method and apparatus for polishing traveling flat glass |
US2267605A (en) * | 1939-01-09 | 1941-12-23 | Libbey Owens Ford Glass Co | Apparatus for handling sheet glass |
US2876146A (en) * | 1954-06-16 | 1959-03-03 | Osborn Mfg Co | Surface treating rod, wire and the like |
US2948087A (en) * | 1958-11-03 | 1960-08-09 | Reproduction Res Lab Inc | Plate graining apparatus |
US2985989A (en) * | 1958-07-15 | 1961-05-30 | Lloyd H Knost | Slab surfacing machine |
US3006116A (en) * | 1959-02-17 | 1961-10-31 | Lloyd H Knost | Apparatus for honing hard surfaced materials |
US3036410A (en) * | 1958-11-12 | 1962-05-29 | Pittsburgh Plate Glass Co | Manufacture of plate glass |
US3166874A (en) * | 1962-09-05 | 1965-01-26 | Bottcher Paul | Thickness grinding machine |
US3177625A (en) * | 1961-03-21 | 1965-04-13 | Saint Gobain | Apparatus for simultaneously working the surfaces of a moving sheet of glass |
US3376672A (en) * | 1964-02-14 | 1968-04-09 | Zuckermann Kom Ges Wien Fa Mas | Abrading machine with a plurality of abrasive wheels |
US4078905A (en) * | 1976-12-03 | 1978-03-14 | Mitsubishi Jukogyo Kabushiki Kaisha | Edge-rounding method and apparatus therefor |
US4594815A (en) * | 1983-07-01 | 1986-06-17 | Timesavers, Inc. | Abrasive surfacer |
US4640056A (en) * | 1983-06-24 | 1987-02-03 | Timesavers, Inc. | Vertically self-centering feed assembly |
US6113472A (en) * | 1997-02-28 | 2000-09-05 | Rosa; Valerio | Method and an apparatus for polishing a roller and for removing the chromium plating thereof |
US6152809A (en) * | 1998-09-03 | 2000-11-28 | Yenawine; Peter W. | Method and apparatus for cold-end processing full-lead crystal |
US20070099546A1 (en) * | 2003-12-10 | 2007-05-03 | Poul Erik Jespersen | Grinding apparatus for treatment of a surface |
US7632171B2 (en) * | 2007-07-06 | 2009-12-15 | Juergen Heesemann | Grinding machine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB469951A (en) | 1936-02-05 | 1937-08-05 | Pilkington Brothers Ltd | Improvements in and relating to apparatus for polishing travelling flat glass |
FR834902A (en) | 1937-03-09 | 1938-12-06 | Pilkington Brothers Ltd | Improvements to devices used to grind and polish glass strips |
-
2007
- 2007-12-04 DK DK200701731A patent/DK200701731A/en not_active Application Discontinuation
-
2008
- 2008-12-04 EP EP08856391A patent/EP2227351A1/en not_active Withdrawn
- 2008-12-04 US US12/734,943 patent/US20110003539A1/en not_active Abandoned
- 2008-12-04 WO PCT/DK2008/050288 patent/WO2009071090A1/en active Application Filing
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1666347A (en) * | 1926-09-03 | 1928-04-17 | Edward Ford Plate Glass Compan | Continuous glass-polishing means |
US1864823A (en) * | 1929-09-10 | 1932-06-28 | Heuze Charles | Grinding, smoothing, and polishing apparatus |
US2197104A (en) * | 1936-02-05 | 1940-04-16 | Pilkington Brothers Ltd | Method and apparatus for polishing traveling flat glass |
US2130255A (en) * | 1937-03-09 | 1938-09-13 | Pilkington Brothers Ltd | Apparatus for grinding and polishing strips of glass |
US2267605A (en) * | 1939-01-09 | 1941-12-23 | Libbey Owens Ford Glass Co | Apparatus for handling sheet glass |
US2876146A (en) * | 1954-06-16 | 1959-03-03 | Osborn Mfg Co | Surface treating rod, wire and the like |
US2985989A (en) * | 1958-07-15 | 1961-05-30 | Lloyd H Knost | Slab surfacing machine |
US2948087A (en) * | 1958-11-03 | 1960-08-09 | Reproduction Res Lab Inc | Plate graining apparatus |
US3036410A (en) * | 1958-11-12 | 1962-05-29 | Pittsburgh Plate Glass Co | Manufacture of plate glass |
US3006116A (en) * | 1959-02-17 | 1961-10-31 | Lloyd H Knost | Apparatus for honing hard surfaced materials |
US3177625A (en) * | 1961-03-21 | 1965-04-13 | Saint Gobain | Apparatus for simultaneously working the surfaces of a moving sheet of glass |
US3166874A (en) * | 1962-09-05 | 1965-01-26 | Bottcher Paul | Thickness grinding machine |
US3376672A (en) * | 1964-02-14 | 1968-04-09 | Zuckermann Kom Ges Wien Fa Mas | Abrading machine with a plurality of abrasive wheels |
US4078905A (en) * | 1976-12-03 | 1978-03-14 | Mitsubishi Jukogyo Kabushiki Kaisha | Edge-rounding method and apparatus therefor |
US4640056A (en) * | 1983-06-24 | 1987-02-03 | Timesavers, Inc. | Vertically self-centering feed assembly |
US4594815A (en) * | 1983-07-01 | 1986-06-17 | Timesavers, Inc. | Abrasive surfacer |
US6113472A (en) * | 1997-02-28 | 2000-09-05 | Rosa; Valerio | Method and an apparatus for polishing a roller and for removing the chromium plating thereof |
US6152809A (en) * | 1998-09-03 | 2000-11-28 | Yenawine; Peter W. | Method and apparatus for cold-end processing full-lead crystal |
US6645043B1 (en) * | 1998-09-03 | 2003-11-11 | Peter W. Yenawine | Method and apparatus for cold-end processing full lead crystal |
US20070099546A1 (en) * | 2003-12-10 | 2007-05-03 | Poul Erik Jespersen | Grinding apparatus for treatment of a surface |
US7632171B2 (en) * | 2007-07-06 | 2009-12-15 | Juergen Heesemann | Grinding machine |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150321308A1 (en) * | 2012-03-29 | 2015-11-12 | Mitsubishi Heavy Industries, Ltd. | Polishing apparatus and method therefor |
EP2832496A4 (en) * | 2012-03-29 | 2015-12-09 | Mitsubishi Heavy Ind Ltd | Polishing device and method therefor |
US9821428B2 (en) * | 2012-03-29 | 2017-11-21 | Mitsubishi Heavy Industries, Ltd. | Polishing apparatus and method therefor |
WO2015144274A1 (en) * | 2014-03-25 | 2015-10-01 | Kuendig Ag | Device and method for the planet-like orbiting of rotating brushing, grinding, and polishing tools |
IT201900020424A1 (en) * | 2019-11-05 | 2021-05-05 | Biesse Spa | MACHINING CENTER WITH ELECTRONIC CONTROL, FOR THE WORKING OF GLASS SHEETS, SHEETS OF STONE MATERIAL, OR SHEETS OF SYNTHETIC MATERIAL |
EP3819080A1 (en) | 2019-11-05 | 2021-05-12 | Biesse S.p.A. | An electronically controlled work center for processing glass plates, plates of stone material or plates of synthetic material |
CN111546168A (en) * | 2020-05-14 | 2020-08-18 | 刘琰 | Automatic grinding device of cylinder neodymium iron boron |
Also Published As
Publication number | Publication date |
---|---|
WO2009071090A1 (en) | 2009-06-11 |
EP2227351A1 (en) | 2010-09-15 |
DK200701731A (en) | 2009-06-05 |
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Legal Events
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Owner name: FLEX TRIM A/S, DENMARK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JESPERSEN, POUL ERIK;REEL/FRAME:024702/0081 Effective date: 20100611 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |