EP2039465B1 - Pushing device for a pad of a polishing machine - Google Patents

Pushing device for a pad of a polishing machine Download PDF

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Publication number
EP2039465B1
EP2039465B1 EP08165042A EP08165042A EP2039465B1 EP 2039465 B1 EP2039465 B1 EP 2039465B1 EP 08165042 A EP08165042 A EP 08165042A EP 08165042 A EP08165042 A EP 08165042A EP 2039465 B1 EP2039465 B1 EP 2039465B1
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EP
European Patent Office
Prior art keywords
pad
plunger piston
piston means
cylinder
stem
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Active
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EP08165042A
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German (de)
French (fr)
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EP2039465A1 (en
Inventor
Fabio Balducci
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VIET SpA
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VIET SpA
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Publication of EP2039465A1 publication Critical patent/EP2039465A1/en
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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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/06—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground
    • B24B21/08—Pressure shoes; Pressure members, e.g. backing belts

Definitions

  • the present invention concerns sandpapering and smoothing and refers to a pushing device for a pad provided for pushing an abrasive means, for example a tape or abrasive cloth sheet, and for pushing against a surface, for example of a wood panel, its by-products or other synthetic or natural materials, specially suitable for polishing machines, sanders and/or thickness-sanding machines.
  • abrasive means for example a tape or abrasive cloth sheet
  • a surface for example of a wood panel, its by-products or other synthetic or natural materials, specially suitable for polishing machines, sanders and/or thickness-sanding machines.
  • the known pushing devices for pressing abrasive belts of grinding machines are equipped with respective pneumatic cylinders for generating the movement forces of pad sectors and forces for matching the grinding against the surface.
  • Document US4527359 discloses diaphragm cylinders controlled by sensing and control means for imparting vertical motion to plunger means acting an segments of a Platen means for adjustably positioning an abrasive belt.
  • a disadvantage of the known devices is that these devices are not suitable for generating the very small and regular needed forces, for example, for water varnishes because of frictions, mainly the first detachment friction.
  • An object of this invention is to propose a pushing device for a pad of a polishing or sanding machine designed to work with very low grinding forces and with regular movements and without jamming in order to uniformly smoothing both flat panels and strongly irregular panels.
  • numeral 1 indicated the pushing device for a pad or for a pad sector 2 of a polishing or sanding machine, object of the present invention, for smoothing, for grinding or for sanding to thickness an element to be polished P, for example a panel, a leaf, a door, a furniture element, a wooden casing frame or the like, wood derivates, metallic alloy, plastic material or any natural or synthetic material.
  • the pad or, when the pad consists of a plurality of sectors, the pad sector 2 is provided for acting onto an abrasive means A, for example a movable abrasive tape, for pressing it against the element P to be polished, for example a constant thickness or variable panel, with a reduced value force and almost constant also in presence of thickness variations of the panel and other changing conditions.
  • an abrasive means A for example a movable abrasive tape
  • the element P to be polished is moved on a horizontal plane while the pushing force of the pad against the abrasive means A and the element P to be polished is vertically and downwardly directed.
  • the pad 2 is fixed, by means of threaded means 17, at an external end of a plunger piston means 3 sliding vertically in a cylinder 4 thereof with vertical axis.
  • the upper end of the cylinder 4 ends with the head which, on the upper part, delimits a pressure room 5 downwardly delimited by the plunger piston means 3.
  • Said pressure room 5 is fed by means of duct 12 of a gas under pressure, for example filtered and compressed air, for the downwardly pushing of the plunger piston means 3.
  • a gas under pressure for example filtered and compressed air
  • the plunger piston means 3 is of the type without gaskets in order to minimize the first detachment friction to make more constant the pushing force onto the pad also in presence of movements of the latter due to different levels of element to be smoothed.
  • the clearance, that is the diameter difference, between the plunger piston means 3 and the respective cylinder 4 is so to allow the passage of an slight or negligible air flow according to feeding amount. Said flow reduces the frictions further improving the pushing force constancy and precludes the entry of working residues and of other powders between the plunger piston means 3 and the respective cylinder 4 preventing the reciprocal locking.
  • the device 1 can include an annular seal means, of material and forms with low friction, applied to the plunger piston means 3 and sliding onto the surface of the cylinder 4 or vice-versa.
  • the annular seal means is applied at the free end of the cylinder so that the plunging piston 3 glides therein with very low friction and in order to prevent the powder and/or dirty entrance between cylinder and floating piston.
  • the device includes movable stroke stop means 6, fit for limiting the stroke of the plunger piston means 3 in the direction opposite to the pressure room 5 imposing a lower arrest condition.
  • the movable stroke stop means 6 are actuated by lifting means 23 for moving the arrest condition between an operating external condition, in which the stroke stop means 6 allow maximum stroke of the plunger piston means 3 downwardly, and an inner rest condition in which the stroke stop means 6 raise at the upper end the arrest condition locking the plunger piston means 3 against the cylinder 4 head, or near this latter.
  • the stroke stop means 6 include a cylindrical stem 7 an end thereof has an enlargement means 8, for example cylindrical shaped, sliding inside the longitudinal bore 9 of the plunger piston means 3 of tubular type.
  • the enlargement means 8 is provided for matching an inner abutment 10 of the longitudinal bore 9 in the stop and rest internal conditions.
  • the longitudinal bore 9 of the plunger piston means 3 upwardly flows, towards the pressure room 5, by means of opening 11 having diameter lower than that of the bore 9 and to that of the enlargement means and slightly higher than that of the stem 7 crossing it. In this way the inner mouth of the opening 11 is defined by the inner abutment 10.
  • the lifting means 23 include a floating piston means 13 fixed at the upper end of the stem 7 and sliding in a respective cylinder 14.
  • the floating piston 13 divides the cylinder 14 into two opposite chambers supplied by respective ducts 15, 16 feeding an operating pressurized fluid flowing into the ends of said cylinder 14.
  • the cylinder 14 of the floating piston means 13 is of the double-acting type with each end fed by a respective duct 15, 16 but, as an alternative, the invention provides that the single lower chamber is equipped with a respective duct 16.
  • the lifting means 23 would be able only to move upwardly the plunger piston means 3, that is in the rest condition, while the translation of the enlargement means 8 downwardly in the lower locking condition that is operative, is entrusted to the plunger piston means at the beginning of the operation. Also in this case the downwardly pushing force is produced by the plunger piston means 3.
  • the stem 7, the longitudinal bore 9, the floating piston means 13, the double acting cylinder 14 and the stem 7, are coaxial.
  • the plunger piston means 3 and the respective pad 2 have a stroke of about 10 mm and therefore the difference between the longitudinal extensions of the floating piston 13 and of the respective cylinder 14 is of about 10 mm.
  • the free stroke of the pad is sufficient, for example, lengthen the longitudinal extension of the cylinder of the floating piston.
  • the lifting means 23 are of the electromagnetic type and may include a linear actuator with output translating shaft or arm fixed to the stem 7 or in single body with this latter.
  • the pad 2 has a stop rotation pin 18 parallel to the plunger piston means 3 and slidingly engaged into a respective housing 19 obtained in a cylinder 4 support of the plunger piston means 3.
  • the end portion, flowing in the pressure room 5, of the duct 12 is coaxial to the stem 7.
  • Each device 1 can be separated from the others or associated to all or part of the other devices controlling all sectors forming the pad.
  • the device can comprise at least one supporting body that is common with a plurality of devices 1.
  • the body is monolithic and joins the devices 1 of all pad sectors forming the pad or sub-assemblies thereof. More bodies can be reciprocally joined, by means of support beams, for making a complete pad.
  • the number of pad sectors can be any, for example it is possible to have 60 devices with the same number of sectors of a pad for a nominal working width of 1350 mm or 48 sectors for the working width of 1100. Pads consisting of 42 sectors for the width 1350 are provided and of 35 sectors for the width 1100.
  • the pad with 60 sectors can have 5 bodies, everyone with 12 devices for the same number of sectors, the pad with 48 sectors can be of 4 bodies, everyone with 12 devices for the same number of sectors.
  • a pad with 48 or with 35 sectors can have 48 or 35 devices kept together by one or more beams.
  • the ducts 12, 15, 16 can be opened and closed by respective electro-valves controlled by a control means of each device 1, fixed to the same device 1, or by a remote and centralized single control means.
  • a possible operation of the device starting from the rest raised condition in which the single lower chamber of the cylinder 14 of the floating piston means 13 is under pressure, provides that the pressure of the upper chamber of the cylinder 14 of the floating piston means 13 is progressively increased by getting over the pressure of the lower chamber and translating downwardly the floating piston 13 and the enlargement means 8.
  • the raising of the pressure in the pressure room 5 of the cylinder 4 of the plunging piston 3 produces the pushing force transmitted by the same plunging piston 3 to the pad or its sector 2 and from this latter to the abrasive means and to the element to be worked. Near the terminal border of element to be worked, the pad is lifted by connecting the duct 15, of the upper chamber of the cylinder 14 of the floating piston means 13, with the pressure of the external environment.
  • the duct 12 feeding the pressure room 5 of the cylinder 4 of the plunging piston 3 is connected, by means of valve means 20, with two gas sources with different pressures P1. P2.
  • the valve means 20 commute the pushing pressure, transmitted by the pad or pad sector 2 to the abrasive means and to the element P to be polished, by means of a pneumatic ring seal 21.
  • An advantage of this invention is to supply a pushing device for a pad of a polishing machine fit for working with very low grinding forces and with regular movements and without jamming in order to uniformly smooth both flat panels and strongly irregular panels.
  • Additional advantage consists in that the device can be used in grinding machines for elements of any material.

Abstract

A pushing device for a pad, or pad sector (2), of a polishing machine, is provided for pushing an abrasive means (A) against an element to be polished (P). The device comprises a plunger piston means (3) sliding in a respective cylinder (4) and in cooperation with the head of said cylinder (4) forms a pressure room (5) fed, by means of a duct (12), with a pressurized gas for pushing the plunger piston means (3). Said pad or pad sector (2) is fixed to the plunger piston means (3).

Description

  • The present invention concerns sandpapering and smoothing and refers to a pushing device for a pad provided for pushing an abrasive means, for example a tape or abrasive cloth sheet, and for pushing against a surface, for example of a wood panel, its by-products or other synthetic or natural materials, specially suitable for polishing machines, sanders and/or thickness-sanding machines.
  • The known pushing devices for pressing abrasive belts of grinding machines are equipped with respective pneumatic cylinders for generating the movement forces of pad sectors and forces for matching the grinding against the surface. Document US4527359 discloses diaphragm cylinders controlled by sensing and control means for imparting vertical motion to plunger means acting an segments of a Platen means for adjustably positioning an abrasive belt.
  • A disadvantage of the known devices is that these devices are not suitable for generating the very small and regular needed forces, for example, for water varnishes because of frictions, mainly the first detachment friction.
  • An object of this invention is to propose a pushing device for a pad of a polishing or sanding machine designed to work with very low grinding forces and with regular movements and without jamming in order to uniformly smoothing both flat panels and strongly irregular panels.
  • The characteristics of invention are in the following evidenced with particular reference to the enclosed drawings in which:
    • figure 1 shows a sectional view of the pushing device for a pad of a polishing machine, object of the present invention, in a rest condition;
    • figure 2 shows a sectional view of the device of figure 1 in an operative condition and associated with an abrasive means and with a panel to be worked, only partially illustrated;
    • figure 3 shows a sectional view of a variant of the device of figure 1.
  • With reference to figures 1 and 2, numeral 1 indicated the pushing device for a pad or for a pad sector 2 of a polishing or sanding machine, object of the present invention, for smoothing, for grinding or for sanding to thickness an element to be polished P, for example a panel, a leaf, a door, a furniture element, a wooden casing frame or the like, wood derivates, metallic alloy, plastic material or any natural or synthetic material.
  • The pad or, when the pad consists of a plurality of sectors, the pad sector 2 is provided for acting onto an abrasive means A, for example a movable abrasive tape, for pressing it against the element P to be polished, for example a constant thickness or variable panel, with a reduced value force and almost constant also in presence of thickness variations of the panel and other changing conditions.
  • As disclosed in figure 2, the element P to be polished is moved on a horizontal plane while the pushing force of the pad against the abrasive means A and the element P to be polished is vertically and downwardly directed.
  • The pad 2 is fixed, by means of threaded means 17, at an external end of a plunger piston means 3 sliding vertically in a cylinder 4 thereof with vertical axis. The upper end of the cylinder 4 ends with the head which, on the upper part, delimits a pressure room 5 downwardly delimited by the plunger piston means 3.
  • Said pressure room 5 is fed by means of duct 12 of a gas under pressure, for example filtered and compressed air, for the downwardly pushing of the plunger piston means 3.
  • As disclosed in the figures, the plunger piston means 3 is of the type without gaskets in order to minimize the first detachment friction to make more constant the pushing force onto the pad also in presence of movements of the latter due to different levels of element to be smoothed. The clearance, that is the diameter difference, between the plunger piston means 3 and the respective cylinder 4 is so to allow the passage of an slight or negligible air flow according to feeding amount. Said flow reduces the frictions further improving the pushing force constancy and precludes the entry of working residues and of other powders between the plunger piston means 3 and the respective cylinder 4 preventing the reciprocal locking.
  • As an alternative the invention provides that the device 1 can include an annular seal means, of material and forms with low friction, applied to the plunger piston means 3 and sliding onto the surface of the cylinder 4 or vice-versa. Preferably the annular seal means is applied at the free end of the cylinder so that the plunging piston 3 glides therein with very low friction and in order to prevent the powder and/or dirty entrance between cylinder and floating piston.
  • To avoid that the pad is always in the lowered position and for carrying it into a rest raised condition, in which the pad does not press the abrasive means against the element, the device includes movable stroke stop means 6, fit for limiting the stroke of the plunger piston means 3 in the direction opposite to the pressure room 5 imposing a lower arrest condition.
  • The movable stroke stop means 6 are actuated by lifting means 23 for moving the arrest condition between an operating external condition, in which the stroke stop means 6 allow maximum stroke of the plunger piston means 3 downwardly, and an inner rest condition in which the stroke stop means 6 raise at the upper end the arrest condition locking the plunger piston means 3 against the cylinder 4 head, or near this latter.
  • The stroke stop means 6 include a cylindrical stem 7 an end thereof has an enlargement means 8, for example cylindrical shaped, sliding inside the longitudinal bore 9 of the plunger piston means 3 of tubular type.
  • The enlargement means 8 is provided for matching an inner abutment 10 of the longitudinal bore 9 in the stop and rest internal conditions.
  • The longitudinal bore 9 of the plunger piston means 3 upwardly flows, towards the pressure room 5, by means of opening 11 having diameter lower than that of the bore 9 and to that of the enlargement means and slightly higher than that of the stem 7 crossing it. In this way the inner mouth of the opening 11 is defined by the inner abutment 10.
  • The lifting means 23 include a floating piston means 13 fixed at the upper end of the stem 7 and sliding in a respective cylinder 14. The floating piston 13 divides the cylinder 14 into two opposite chambers supplied by respective ducts 15, 16 feeding an operating pressurized fluid flowing into the ends of said cylinder 14.
  • Therefore the cylinder 14 of the floating piston means 13 is of the double-acting type with each end fed by a respective duct 15, 16 but, as an alternative, the invention provides that the single lower chamber is equipped with a respective duct 16. In such a case the lifting means 23 would be able only to move upwardly the plunger piston means 3, that is in the rest condition, while the translation of the enlargement means 8 downwardly in the lower locking condition that is operative, is entrusted to the plunger piston means at the beginning of the operation. Also in this case the downwardly pushing force is produced by the plunger piston means 3.
  • The stem 7, the longitudinal bore 9, the floating piston means 13, the double acting cylinder 14 and the stem 7, are coaxial.
  • Generally, it is sufficient to allow that the plunger piston means 3 and the respective pad 2 have a stroke of about 10 mm and therefore the difference between the longitudinal extensions of the floating piston 13 and of the respective cylinder 14 is of about 10 mm. To increase the free stroke of the pad is sufficient, for example, lengthen the longitudinal extension of the cylinder of the floating piston.
  • As an alternative of the oscillating piston, is provided that the lifting means 23 are of the electromagnetic type and may include a linear actuator with output translating shaft or arm fixed to the stem 7 or in single body with this latter.
  • The pad 2 has a stop rotation pin 18 parallel to the plunger piston means 3 and slidingly engaged into a respective housing 19 obtained in a cylinder 4 support of the plunger piston means 3.
  • The end portion, flowing in the pressure room 5, of the duct 12 is coaxial to the stem 7.
  • Each device 1 can be separated from the others or associated to all or part of the other devices controlling all sectors forming the pad. In particular the device can comprise at least one supporting body that is common with a plurality of devices 1. The body is monolithic and joins the devices 1 of all pad sectors forming the pad or sub-assemblies thereof. More bodies can be reciprocally joined, by means of support beams, for making a complete pad.
  • The number of pad sectors can be any, for example it is possible to have 60 devices with the same number of sectors of a pad for a nominal working width of 1350 mm or 48 sectors for the working width of 1100. Pads consisting of 42 sectors for the width 1350 are provided and of 35 sectors for the width 1100.
  • The pad with 60 sectors can have 5 bodies, everyone with 12 devices for the same number of sectors, the pad with 48 sectors can be of 4 bodies, everyone with 12 devices for the same number of sectors. A pad with 48 or with 35 sectors can have 48 or 35 devices kept together by one or more beams.
  • For the pad operation, the ducts 12, 15, 16 can be opened and closed by respective electro-valves controlled by a control means of each device 1, fixed to the same device 1, or by a remote and centralized single control means.
  • A possible operation of the device, starting from the rest raised condition in which the single lower chamber of the cylinder 14 of the floating piston means 13 is under pressure, provides that the pressure of the upper chamber of the cylinder 14 of the floating piston means 13 is progressively increased by getting over the pressure of the lower chamber and translating downwardly the floating piston 13 and the enlargement means 8. The raising of the pressure in the pressure room 5 of the cylinder 4 of the plunging piston 3 produces the pushing force transmitted by the same plunging piston 3 to the pad or its sector 2 and from this latter to the abrasive means and to the element to be worked. Near the terminal border of element to be worked, the pad is lifted by connecting the duct 15, of the upper chamber of the cylinder 14 of the floating piston means 13, with the pressure of the external environment.
  • In the variant of the device of figure 3, the duct 12 feeding the pressure room 5 of the cylinder 4 of the plunging piston 3 is connected, by means of valve means 20, with two gas sources with different pressures P1. P2.
  • The valve means 20 commute the pushing pressure, transmitted by the pad or pad sector 2 to the abrasive means and to the element P to be polished, by means of a pneumatic ring seal 21.
  • The operation of the variant of the device of figure 3 differs from that previously described because of the exercised force from the pad can assume two different intensities.
  • An advantage of this invention is to supply a pushing device for a pad of a polishing machine fit for working with very low grinding forces and with regular movements and without jamming in order to uniformly smooth both flat panels and strongly irregular panels.
  • Other advantage consists in that the device can be used in the longitudinal and transversal pads.
  • Additional advantage consists in that the device can be used in grinding machines for elements of any material.

Claims (14)

  1. Pushing device for a pad, or pad sector (2), of a polishing machine, provided for pushing an abrasive means (A) against an element to be polished (P), said device (1) comprising a plunger piston means (3) sliding in a respective cylinder (4) and that delimits, in cooperation with the head of said cylinder (4), a pressure room (5) fed, by means of a duct (12), with a pressurized gas for pushing the plunger piston means (3), said pad or pad sector (2) is fixed to the plunger piston means (3) where the plunger piston means (3) is of the kind without seals and the interspace between said plunger piston means (3) and the respective cylinder (4) allows the passage of a slight or negligible air flow.
  2. Device according to claim 1 characterized in that the free end of the cylinder (4) is provided with a low friction seal means sliding on the plunger piston means (3) for avoiding the durst incoming.
  3. Device according to claim 1 characterized in that it comprises stroke stop means (6) fit for stop the stroke of the plunger piston means (3) in the direction opposite to the pressure room (5) up to an arrest condition; said stroke stop means (6) being mobile and operated by lifting means (23) between an operating external condition, in which the stroke stop means (6) allows the maximum stroke of the plunger piston means (3) up to the arrest condition, and an inner rest condition in which the stroke stop means (6) stops the plunger piston means (3) against, or close to, the head of the cylinder (4).
  4. Device according to claim 4-3 characterized in that the stroke stop means (6) comprises a stem (7) one end of which has an enlargement means (8) sliding inside a longitudinal bore (9) of the plunger piston means (3) and provided for matching an inner abutment (10) of the longitudinal bore (9) at least in the arrest and inner rest conditions, were the stem (7), the longitudinal bore (9) and the plunger piston means (3) are coaxial.
  5. Device according to claim 4 characterized in that the longitudinal bore (9) of the plunger piston means (3) flows towards the pressure room (5) by means of an opening (11) whose diameter, is smaller than that of the bore (9) and that of the enlargement means (8) and slightly bigger than that of the stem (7) crossing it, the inner mouth of the opening (11) being defined by the inner abutment (10).
  6. Device according to claim 4 or 5 characterized in that the lifting means (23) includes a floating piston means (13) fixed to the stem (7) and sliding in a respective cylinder (14) fed of at least a duct (15, 16) feeding an operating pressurized fluid flowing in at least one end of said cylinder (14).
  7. Device according to claim 6 characterized in that the cylinder (14) of the floating piston means (13) is of the double acting type with each end fed by a respective duct (15, 16) where the floating piston means (13), the double acting cylinder (14) and the stem (7) are coaxial.
  8. Device according to claim 4 characterized in that the lifting means (23) includes a linear actuator having a translating output stem or arm fixed to the stem (7) or integral with the latter, said linear actuator of the lifting means (23) being of electromagnetic kind or the like.
  9. Device according to any of the preceding claims characterized in that the pad or pad sector (2) is fixed to the end of the plunger piston means (3) opposite to the pressure room (5) by means of threaded means (17).
  10. Device according to any of the preceding claims characterized in that the pad or pad sector (2) has a stop rotation pin (18) parallel to the plunger piston means (3) and engaged, in a sliding manner, in a respective housing (19) carried out in a support for the cylinder (4) of the plunger piston means (3).
  11. Device according to claim 4 characterized in that the end portion of the duct (12), flowing into the pressure room (5), is coaxial with respect to the stem (7).
  12. Device according to claim 4 characterized in that the duct (12) is connected with two gas sources at different pressures (P1, P2) by means of valve means (20) fit for switching the pushing pressure of the pad or pad sector (2) against the abrasive means (A) and against the element to be polished (P).
  13. Device according to claim 12 characterized in that the valve means (20) includes a pneumatic ring seal (21) for switching the pushing pressures.
  14. Device according to any of the preceding claims characterized in that it includes at least a single supporting body for a plurality of devices (1), said body being monolithic made and fit for joining all the devices (1) of all the pad sectors that forms the pad or subset thereof.
EP08165042A 2007-09-24 2008-09-24 Pushing device for a pad of a polishing machine Active EP2039465B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000648A ITBO20070648A1 (en) 2007-09-24 2007-09-24 PUSHING DEVICE FOR A BUFFER OF A SANDER.

Publications (2)

Publication Number Publication Date
EP2039465A1 EP2039465A1 (en) 2009-03-25
EP2039465B1 true EP2039465B1 (en) 2010-11-24

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ID=39939285

Family Applications (1)

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EP08165042A Active EP2039465B1 (en) 2007-09-24 2008-09-24 Pushing device for a pad of a polishing machine

Country Status (4)

Country Link
EP (1) EP2039465B1 (en)
AT (1) ATE489196T1 (en)
DE (1) DE602008003633D1 (en)
IT (1) ITBO20070648A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103522176B (en) * 2012-10-18 2017-04-26 江苏省（扬州）数控机床研究院 Floating finishing-machining grinding head with controllable grinding force
EP3012067B1 (en) * 2014-10-22 2023-05-03 BIESSE S.p.A. Plant for sanding/finishing panels made of wood, metal or the like
IT201800007999A1 (en) * 2018-08-09 2020-02-09 Viet Italia Srl SANDING MACHINE FOR SANDING / SATIN FINISHING OF WOOD, METAL OR SIMILAR PANELS
CN109877678B (en) * 2019-04-09 2021-04-20 广东利迅达机器人系统股份有限公司 A equipment of polishing for intelligent lock panel
CN110695808A (en) * 2019-11-15 2020-01-17 中国工程物理研究院激光聚变研究中心 Single-shaft polishing mechanism
EP3838481B1 (en) * 2019-12-16 2024-01-24 BIESSE S.p.A. Sanding machine for sanding/finishing panels made of wood, metal or the like

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374583A (en) * 1965-09-20 1968-03-26 Walter Jacobi & Sons Inc Apparatus for finishing surfaces
GB1151775A (en) * 1966-08-05 1969-05-14 Rubery Owen & Company Ltd Resistance Welding Equipment.
DE2320345A1 (en) * 1973-04-21 1974-11-07 Karl Heesemann BELT SANDING MACHINE
US4527359A (en) * 1984-04-23 1985-07-09 Timesavers, Inc. Segmented platen with diaphragm cylinder control

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Publication number Publication date
ATE489196T1 (en) 2010-12-15
ITBO20070648A1 (en) 2009-03-25
EP2039465A1 (en) 2009-03-25
DE602008003633D1 (en) 2011-01-05

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