WO2016185374A1 - 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 - Google Patents
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 Download PDFInfo
- Publication number
- WO2016185374A1 WO2016185374A1 PCT/IB2016/052851 IB2016052851W WO2016185374A1 WO 2016185374 A1 WO2016185374 A1 WO 2016185374A1 IB 2016052851 W IB2016052851 W IB 2016052851W WO 2016185374 A1 WO2016185374 A1 WO 2016185374A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slabs
- spindle
- machine
- polishing
- spindles
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/047—Grinding heads for working on plane surfaces
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
-
- 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
- B24B47/26—Accessories, e.g. stops
-
- 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
- B24B7/224—Portal grinding machines; Machines having a tool movable in a plane
Definitions
- the present invention refers to a machine for polishing/ flattening slabs of natural stone or marble or granite or the like in order to obtain smooth and flat slabs, able to be used for example to product polished and/or smoothed stone material in general.
- such machines comprise a base with a conveyor belt that makes the slabs advance from a bridge, movable in the direction transversal to the forward motion of the slabs, on which a series of spindles are fixed that, by means of suitable operating heads, kept in contact with the material through pneumatic cylinders, provide for the polishing of the slabs.
- the spindles are positioned on the bridge parallel to one another transversal to the movement of the slabs.
- Such starting slabs to be polished can be produced with various methods and machinery; these range from diamond frames, grit frames, giant-disc machines or multi-wire machines.
- the quality of the slabs can vary in terms of the shape, the surface finish and the dimensional tolerances.
- the finished product in outlet from the polishers, can consist of slabs calibrated in thickness with predetermined tolerances, or simply polished slabs for which reason the tolerance of the thickness is not important .
- the polishing of the slabs is obtained through different tools depending on whether it is marble or granite; in the case of marble metallic plates are used that carry the so-called “Frankfurt” sectors, which are fixed onto suitable couplings provided on the work surface of the plate; in the case of granite, the polishing heads rotate and carry on the periphery a series of so-called wiper plates provided with oscillating motion with respect to the head; the so-called “Fickert” sectors with the polishing grains are fixed onto such plates.
- the polishing operation When calibration is required, the polishing operation must be preceded by a calibration operation through a machine configured and equipped with spindles controlled in height, so as to ensure, at the outlet of the machine, a given thickness, with the successive action of many calibrating spindles in sequence.
- the calibration tools generally (but not exclusively) consist of planetary diamond plates or tangential diamond-discs for granite, whereas for marble there can again be planetary plates or diamond-plates with a continuous crown.
- the operation of preparing for polishing must be preceded by an operation that provides for eliminating possible surface defects from the slabs, such as "ridges” but particularly crests and valleys of the surface of the slab and of preparing a flat surface without any regard to the final thickness; such a purpose is normally achieved by using, as first heads, (normally two or three) spindles driven by pneumatic cylinders that, by means of FrankFurt sectors on which sintered diamond is applied instead of polish, "clean" the surface of the slab removing a layer of material and thus preparing it for the subsequent action of the actual polishes.
- the purpose of the invention is to equip existing pneumatic spindles with a device that ensures a mechanical downward end-stroke so as to limit the amount of material removed, ensured by a movable mechanical end-stroke and, finally, ensure that the slab has a flat surface.
- An aspect of the present invention concerns a machine for polishing/ flattening slabs of natural stone or marble or granite or the like, provided with a control mechanism of the position for a flattening spindle of such a machine having the characteristics of claim 1.
- a further aspect of the present invention concerns a method for polishing/ flattening slabs of natural stone or marble or granite or the like having the characteristics of claim 8.
- figure 1 illustrates a perspective view of a spindle of a machine for polishing slabs to which the control mechanism of the position of the flattening spindle according to the present invention is applied;
- figure 2 illustrates the same mechanism of figure 1 in a side view
- figure 3 illustrates the means for adjusting the stop position of the spindle according to the present invention .
- the machine for polishing slabs to which the control mechanism of the position of the flattening spindle according to the present invention is applied essentially comprises a base with a conveyor belt that makes the slabs advance from a bridge, movable in the transversal direction to the forward motion of the slabs, on which a series of spindles 1 are fixed that, through suitable operating heads 2, kept in contact with the material by pneumatic cylinders, provide for polishing the slabs.
- the spindles are positioned parallel to one another transversally to the movement of the slabs.
- the spindles are kept in contact with the slabs by the aforementioned cylinders that allow an up and down movement of the operating head depending on the distance at which the underlying slab is located.
- the mechanism according to the present invention comprises means for stopping the vertical movement of the spindle in a lower stop position and means for adjusting the lower stop position of the spindle itself .
- the stop means comprise a gripper 3 actuated by a first pneumatic cylinder 31 that locks on a stem 4 of the pneumatic cylinder 6 for controlling the spindle 1 limiting the downward stroke thereof by means of an abutment 5 that defines such a stop position.
- the means for adjusting the stop position comprise a second pneumatic cylinder 7, which keeps the gripper, when not operative, at a certain predetermined height.
- the cylinder immediately retracts freeing the movement of the gripper together with the spindle towards the stop position.
- Such a cylinder 7 also comprises a washer 71 for manually adjusting the port L that constitutes the size of the overstroke of the gripper, i.e. the minimum thickness to be removed on the surface of the slab.
- Such an overstroke value or port L is normally comprised between 0 and 5 mm; in the case of standard materials a reference value is 0.2-0.3 mm.
- a type of operation of the device could be the following :
- the spindle lowers onto the material being processed controlled by the devices of the polishing machine; then it performs one or two passes on the material itself, identifying, through the position control of the spindle (cylinder) and suitable sensors, the lowest position .
- the stop means by means of the closing of the gripper, define the stop position, the second cylinder 7 of the adjustment means will retract and the flattening head 2 can perform a sort of flattening up to the minimum height defined by the abutment 5.
- the head itself will have the possibility of lifting up, since controlled by a pneumatic cylinder that allows elasticity of the position, therefore without carrying out the requested flattening but avoiding "embedding"; the flattening will be completed by the successive head (or heads), which will operate on a "prepared” surface.
- the flattening/polishing process that is carried out by the machine according to the present invention is substantially as follows.
- the steps of the method described above are also applicable to a calibration or calibration/polishing machine, in which the vertical position of the spindles is ensured by mechanical abutments controlled by screws or analogous systems; the spindles being kept in contact with said abutment by the pneumatic cylinder.
- the profile of the slab being processed is detected in inlet to the machine and the position of the mechanical abutments is made so as to optimise the removal capability of the heads; if the processing requires a greater removal capability than the possibility of a head, it would automatically raise since it is kept on the mechanical abutment by a pneumatic cylinder, going back into the correct position as soon as the processing conditions (for example reduction of the belt advancing speed) allow it. The extra removal would thus be divided among the successive heads.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Machine for polishing/ flattening slabs of natural stone or marble or granite or the like, provided with a mechanism for controlling the position of the spindle, such a machine comprising a base on which the slabs are positioned, a bridge, movable with respect to the base and to the slabs, on which a series of spindles (1) are fixed that, through suitable operating heads (2) kept in contact with the surface of the slabs by pneumatic cylinders that carry out the vertical movement of the spindles in the direction of the underlying slabs, provide for the polishing of the slabs themselves.
Description
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
The present invention refers to a machine for polishing/ flattening slabs of natural stone or marble or granite or the like in order to obtain smooth and flat slabs, able to be used for example to product polished and/or smoothed stone material in general.
In particular, such machines comprise a base with a conveyor belt that makes the slabs advance from a bridge, movable in the direction transversal to the forward motion of the slabs, on which a series of spindles are fixed that, by means of suitable operating heads, kept in contact with the material through pneumatic cylinders, provide for the polishing of the slabs. The spindles are positioned on the bridge parallel to one another transversal to the movement of the slabs.
Such starting slabs to be polished can be produced with various methods and machinery; these range from diamond frames, grit frames, giant-disc machines or multi-wire machines.
Depending on the production method used and the type of material being processed, the quality of the slabs can vary in terms of the shape, the surface finish and the dimensional tolerances.
The finished product, in outlet from the polishers, can consist of slabs calibrated in thickness with predetermined tolerances, or simply polished slabs for
which reason the tolerance of the thickness is not important .
In machines of the known type, the polishing of the slabs is obtained through different tools depending on whether it is marble or granite; in the case of marble metallic plates are used that carry the so-called "Frankfurt" sectors, which are fixed onto suitable couplings provided on the work surface of the plate; in the case of granite, the polishing heads rotate and carry on the periphery a series of so-called wiper plates provided with oscillating motion with respect to the head; the so-called "Fickert" sectors with the polishing grains are fixed onto such plates.
When calibration is required, the polishing operation must be preceded by a calibration operation through a machine configured and equipped with spindles controlled in height, so as to ensure, at the outlet of the machine, a given thickness, with the successive action of many calibrating spindles in sequence. The calibration tools generally (but not exclusively) consist of planetary diamond plates or tangential diamond-discs for granite, whereas for marble there can again be planetary plates or diamond-plates with a continuous crown.
In the case in which only polishing of the surface of the slab is required, the operation of preparing for polishing must be preceded by an operation that provides for eliminating possible surface defects from the slabs, such as "ridges" but particularly crests and valleys of the surface of the slab and of preparing a flat surface without any regard to the final thickness; such a purpose is normally achieved by using, as first
heads, (normally two or three) spindles driven by pneumatic cylinders that, by means of FrankFurt sectors on which sintered diamond is applied instead of polish, "clean" the surface of the slab removing a layer of material and thus preparing it for the subsequent action of the actual polishes.
The effectiveness of such action is not, however, always ensured particularly in the case in which the surface of the slabs has dimensional defects, so-called "ridges", i.e. variation of the thickness in the transversal direction of the slab, since, in this case, the action of the spindles will tend to reproduce a cleaner plate but roughly with the same original dimensional defects since the pneumatic cylinders only ensure an abrasive action but without dimensional references .
The purpose of the invention is to equip existing pneumatic spindles with a device that ensures a mechanical downward end-stroke so as to limit the amount of material removed, ensured by a movable mechanical end-stroke and, finally, ensure that the slab has a flat surface.
An aspect of the present invention concerns a machine for polishing/ flattening slabs of natural stone or marble or granite or the like, provided with a control mechanism of the position for a flattening spindle of such a machine having the characteristics of claim 1. A further aspect of the present invention concerns a method for polishing/ flattening slabs of natural stone or marble or granite or the like having the characteristics of claim 8.
The characteristics of the present invention will become clearer from the following description and from the attached drawings, relative to a non-limiting embodiment, in which:
figure 1 illustrates a perspective view of a spindle of a machine for polishing slabs to which the control mechanism of the position of the flattening spindle according to the present invention is applied;
figure 2 illustrates the same mechanism of figure 1 in a side view;
figure 3 illustrates the means for adjusting the stop position of the spindle according to the present invention .
With reference to the quoted figures the machine for polishing slabs to which the control mechanism of the position of the flattening spindle according to the present invention is applied essentially comprises a base with a conveyor belt that makes the slabs advance from a bridge, movable in the transversal direction to the forward motion of the slabs, on which a series of spindles 1 are fixed that, through suitable operating heads 2, kept in contact with the material by pneumatic cylinders, provide for polishing the slabs. The spindles are positioned parallel to one another transversally to the movement of the slabs.
The spindles are kept in contact with the slabs by the aforementioned cylinders that allow an up and down movement of the operating head depending on the distance at which the underlying slab is located.
The mechanism according to the present invention comprises means for stopping the vertical movement of the spindle in a lower stop position and means for
adjusting the lower stop position of the spindle itself .
The stop means comprise a gripper 3 actuated by a first pneumatic cylinder 31 that locks on a stem 4 of the pneumatic cylinder 6 for controlling the spindle 1 limiting the downward stroke thereof by means of an abutment 5 that defines such a stop position.
The means for adjusting the stop position comprise a second pneumatic cylinder 7, which keeps the gripper, when not operative, at a certain predetermined height. When the gripper is closed around the stem of the spindle, the cylinder immediately retracts freeing the movement of the gripper together with the spindle towards the stop position.
Such a cylinder 7 also comprises a washer 71 for manually adjusting the port L that constitutes the size of the overstroke of the gripper, i.e. the minimum thickness to be removed on the surface of the slab.
Such an overstroke value or port L is normally comprised between 0 and 5 mm; in the case of standard materials a reference value is 0.2-0.3 mm.
A type of operation of the device could be the following :
The spindle lowers onto the material being processed controlled by the devices of the polishing machine; then it performs one or two passes on the material itself, identifying, through the position control of the spindle (cylinder) and suitable sensors, the lowest position .
On such a position, the stop means, by means of the closing of the gripper, define the stop position, the second cylinder 7 of the adjustment means will retract
and the flattening head 2 can perform a sort of flattening up to the minimum height defined by the abutment 5.
If the difference in thickness encountered by the head is excessive for the removal ability of the spindle, the head itself will have the possibility of lifting up, since controlled by a pneumatic cylinder that allows elasticity of the position, therefore without carrying out the requested flattening but avoiding "embedding"; the flattening will be completed by the successive head (or heads), which will operate on a "prepared" surface.
The flattening/polishing process that is carried out by the machine according to the present invention is substantially as follows.
• performing at least one first pass with the spindle and the operating head in contact with the surface of the slab,
• detecting, during such first processing, the lowest point or minimum height of the spindle,
• at the end of this pass, making the gripper 3 intervene, at the minimum height, and retracting the cylinder 7 that ensures that an overstroke beyond the minimum height identified is reached · performing further processing of the spindle on the slab with the operating head in such a position. If the difference in thickness encountered by the head is excessive for the removal ability of the spindle, the head/spindle group lifts automatically since it is actuated pneumatically, thus avoiding jamming whilst still continuing to remove material based on its own actual capability.
The steps of the method described above are also applicable to a calibration or calibration/polishing machine, in which the vertical position of the spindles is ensured by mechanical abutments controlled by screws or analogous systems; the spindles being kept in contact with said abutment by the pneumatic cylinder. The profile of the slab being processed is detected in inlet to the machine and the position of the mechanical abutments is made so as to optimise the removal capability of the heads; if the processing requires a greater removal capability than the possibility of a head, it would automatically raise since it is kept on the mechanical abutment by a pneumatic cylinder, going back into the correct position as soon as the processing conditions (for example reduction of the belt advancing speed) allow it. The extra removal would thus be divided among the successive heads.
Claims
1. Machine for polishing/ flattening slabs of natural stone or marble or granite or the like, provided with a mechanism for controlling the position of the spindle, such machine comprising
a base on which the slabs are positioned,
a bridge, movable with respect to the base and the slabs, on which a series of spindles (1) are fixed which, by means of suitable operating heads (2) maintained in contact with the surface of the slabs by pneumatic cylinders that realize the vertical movement of the spindles in the direction of the underlying slabs, provide for the polishing of the slabs themselves ,
characterized in that such control mechanism comprises means for stopping the vertical movement for at least one spindle of the machine in a lower stop position and means for adjusting the lower stop position of the spindle itself.
2. Machine according to claim 1, wherein the stop means comprise a gripper (3) actuated by a first pneumatic cylinder (31) that is locked onto a stem (4) of the pneumatic cylinder (6) for controlling the spindle (1) by limiting the downward stroke thereof by means of an abutment (5) that defines such stop position .
3. Machine according to claim 1, wherein the means for adjusting the stop position comprise a second pneumatic cylinder (7), which maintains the gripper, when not operating, at a certain predetermined height, and which, when the gripper is closed around the spindle stem, retracts immediately releasing the movement of
the gripper together with the spindle towards the stop position .
4. Machine according to claim 3, wherein such second cylinder (7) also comprises a washer (71) for the manual adjustment of the port (L) which constitutes the size of the overstroke of the gripper.
5. Machine according to claim 1, comprising an electronic reading device that defines the profile and thickness of the slab itself being processed.
6. Machine according to claim 1, wherein the movement of the adjustment means and in particular of the second cylinder is controlled by an electronic control unit of the machine .
7. Method for polishing/ flattening slabs of natural stone or marble or granite or the like, performed by a machine for polishing/ flattening, said machine comprising a base on which the slabs are positioned and a bridge, movable with respect to the base and the slabs, on which a series of spindles (1) are fixed which, by means of suitable operating heads (2) maintained in contact with the surface of the slabs by pneumatic cylinders that realize the vertical movement of the spindles in the direction of the underlying slabs, provide for the polishing/ flattening of the slabs themselves,
characterized in that it comprises the following steps: a) performing at least one first polishing processing with a spindle and the related operating head in contact with the surface of the slab,
b) detecting, during such first processing, the lowest point or minimum height of the spindle,
c) at the end of the processing, blocking such spindle at such minimum height,
d) performing further processing of the spindle on the slab with the operating head in such position, e) if the thickness difference encountered by the head is excessive for the removal ability of the spindle, the head is lifted up to the height in which the performance of the head allows continuing the removal and preventing the occurrence of jamming.
8. Method for polishing/ flattening slabs of natural stone or marble or granite or the like, performed by a calibrating/polishing machine comprising a base on which the slabs are positioned and a bridge, movable with respect to the base and the slabs, on which a series of spindles (1) are fixed which, by means of special operating heads (2) maintained in contact with the surface of the slabs by pneumatic cylinders that realize the vertical movement of the spindles in the direction of the underlying slabs, provide for the calibration/polishing of the slabs themselves, the vertical position of the spindles in such machine being ensured by mechanical abutments controlled by screws or analogous systems; the spindles being maintained in contact with said abutment by such pneumatic cylinders, the profile of the slab being processed is detected in such machine upon entering the machine and the position of the mechanical abutments being realized so as to optimize the removal capability of the heads,
characterized in that it comprises the following steps:
) performing at least one first polishing processing with a spindle and the related operating head in contact with the surface of the slab,
) if the thickness difference encountered by the head, located on the established mechanical abutment, is excessive for the removal ability of the spindle, the head itself is lifted, moving away from the fixed mechanical abutment, by being actuated by the pneumatic cylinder, up to the height in which the performance of the head allows continuing the removal and preventing the occurrence of jamming,
) returning to the correct position, that is on the mechanical abutment, as soon as the processing conditions allow.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102015000015481 | 2015-05-18 | ||
| ITUB20150679 | 2015-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016185374A1 true WO2016185374A1 (en) | 2016-11-24 |
Family
ID=54011797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2016/052851 WO2016185374A1 (en) | 2015-05-18 | 2016-05-17 | 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 |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016185374A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800009863A1 (en) * | 2018-10-29 | 2020-04-29 | Dario Toncelli | Unit for grinding / polishing of stone artefacts, method for adjusting the movement of a sanding / polishing head and machine for grinding / polishing of stone artefacts |
| IT202000004819A1 (en) * | 2020-03-06 | 2021-09-06 | Bottero Spa | UNIT FOR GRINDING OR POLISHING A SHEET, IN PARTICULAR A GLASS SHEET, AND METHOD OF WORKING THE SHEET USING THIS UNIT |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985989A (en) * | 1958-07-15 | 1961-05-30 | Lloyd H Knost | Slab surfacing machine |
| WO2009071090A1 (en) * | 2007-12-04 | 2009-06-11 | Flex Trim A/S | Apparatus for double-sided grinding |
-
2016
- 2016-05-17 WO PCT/IB2016/052851 patent/WO2016185374A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2985989A (en) * | 1958-07-15 | 1961-05-30 | Lloyd H Knost | Slab surfacing machine |
| WO2009071090A1 (en) * | 2007-12-04 | 2009-06-11 | Flex Trim A/S | Apparatus for double-sided grinding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800009863A1 (en) * | 2018-10-29 | 2020-04-29 | Dario Toncelli | Unit for grinding / polishing of stone artefacts, method for adjusting the movement of a sanding / polishing head and machine for grinding / polishing of stone artefacts |
| IT202000004819A1 (en) * | 2020-03-06 | 2021-09-06 | Bottero Spa | UNIT FOR GRINDING OR POLISHING A SHEET, IN PARTICULAR A GLASS SHEET, AND METHOD OF WORKING THE SHEET USING THIS UNIT |
| EP3875219A1 (en) * | 2020-03-06 | 2021-09-08 | Bottero S.p.A. | Grinding or polishing unit of a sheet, in particular a glass sheet, and method for processing sheets using such unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5245793A (en) | Method and apparatus for fine working or microfinishing | |
| KR101267439B1 (en) | Polishing device for polygonal column member, and method for polishing same | |
| TWI520829B (en) | A grinding member for a cylindrical member, a cylindrical member, and a cylindrical member | |
| KR101601007B1 (en) | Polishing device for columnar member and polishing method therefor | |
| US8708775B2 (en) | Method and apparatus for grinding a continuously casting product | |
| KR20020001839A (en) | Method and apparatus for polishing outer peripheral chamfered part of wafer | |
| US10239179B2 (en) | Method for smoothing and/or polishing slabs of stone or stone-like material | |
| CN103978409A (en) | Timber polishing and sanding equipment and processing technology thereof | |
| KR102406896B1 (en) | Abrasive machining apparatus for processing edges of glass articles | |
| ITTV20090224A1 (en) | SANDING OR POLISHING MACHINE FOR SLABS OF STONE MATERIAL, AS A NATURAL STONE AND AGGLOMERATE, CERAMIC AND GLASS. | |
| KR20130092401A (en) | Wafer chamfering device | |
| JP2011077413A (en) | Method for manufacturing silicon wafer | |
| EP1231022B1 (en) | Apparatus for polishing and conveying products | |
| WO2016185374A1 (en) | 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 | |
| EP1963065B1 (en) | Machine for optimized cutting of slabs in stone or lithoid material | |
| KR101574520B1 (en) | A Saw Blade Automatic Grinding Apparatus | |
| CN107498446A (en) | The elastic polished equipment and method of a kind of special-shaped workpiece | |
| CN107020547A (en) | A kind of polished edges of stones processing method | |
| KR20130096360A (en) | Silicon ingot multiprocessing machine | |
| KR20150073214A (en) | Method for producing polished article | |
| EP3581331B1 (en) | Set of discs for grinding the edges of glass plates | |
| KR101110646B1 (en) | Apparatus for brushing an ingot block automatically and method for brushing an ingot block automatically using it | |
| KR100995232B1 (en) | The surface grind system of mobile-phone case to key chemical fiber material magnesium | |
| JP5329877B2 (en) | Composite grinding method for workpieces | |
| KR101444578B1 (en) | Apparatus for polishing edge of wafer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16735680 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 16735680 Country of ref document: EP Kind code of ref document: A1 |