EP4011549A1 - Eine schleifmaschine zum schleifen / finishen / bürsten von bauteilen aus holz, metall oder dergleichen - Google Patents

Eine schleifmaschine zum schleifen / finishen / bürsten von bauteilen aus holz, metall oder dergleichen Download PDF

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Publication number
EP4011549A1
EP4011549A1 EP21213651.9A EP21213651A EP4011549A1 EP 4011549 A1 EP4011549 A1 EP 4011549A1 EP 21213651 A EP21213651 A EP 21213651A EP 4011549 A1 EP4011549 A1 EP 4011549A1
Authority
EP
European Patent Office
Prior art keywords
sanding
unit
another
relative
sanding machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21213651.9A
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English (en)
French (fr)
Inventor
Fabio Balducci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biesse SpA
Original Assignee
Biesse SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biesse SpA filed Critical Biesse SpA
Publication of EP4011549A1 publication Critical patent/EP4011549A1/de
Pending legal-status Critical Current

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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
    • 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
    • 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
    • B24B21/002—Machines or devices using grinding or polishing belts; Accessories therefor for grinding edges or bevels
    • 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
    • B24B21/18—Accessories
    • B24B21/22—Accessories for producing a reciprocation of the grinding belt normal to its direction of 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • 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
    • B24B7/28—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 wood

Definitions

  • the invention relates to a sanding machine for sanding/finishing/brushing components made of wood, metal or the like.
  • the invention especially finds advantageous application in the sanding/finishing of bevelled edges of bars with an elongated shape used as beams or columns in the building industry, to which explicit reference will be made in the description below without because of this loosing in generality.
  • a sanding machine which comprises at least one sanding unit to sand/finish the bars; and a feeding device, which defines a support surface for at least one bar and is designed to move the bar in a horizontal direction parallel to the support surface and along a path extending through the sanding unit.
  • the sanding unit comprises a frame, at least two pulleys (normally, three pulleys) mounted so as to rotate around respective longitudinal axes and an abrasive belt wound in a ring shape around the pulleys.
  • the sanding unit further comprises at least one pushing element, which is arranged between the pulleys and is movable between an operating position, in which it pushes the abrasive belt against the bevelled edges of the bar, and a rest position, in which it disengages the abrasive belt from the bar.
  • the sanding unit is further provided with an operating device to move one of the pulleys with an oscillatory reciprocating motion around a rotation axis, which is transverse to the relative longitudinal axis.
  • the oscillatory reciprocating motion of the pulley generates a straight reciprocating motion of the abrasive belt along the pulleys parallel to the relative longitudinal axes.
  • the operating device normally comprises an actuator cylinder, which is provided with an output rod connected to the pulley and alternatively movable between an extracted position and a retracted position, and a photodetector, which is designed to selectively control the operation of the actuator cylinder.
  • the actuator cylinder is activated in order to move the output rod from the retracted position to the extracted position, when the photodetector detects the passage of the abrasive belt, and is activated in order to move the output rod again from the extracted position to the retracted position after a constant amount of time.
  • the object of the invention is to provide a sanding machine for sanding/finishing/brushing components made of wood, metal or the like, which does not suffer from the drawbacks described above and is simple and economic to be manufactured.
  • a sanding machine for sanding/finishing/brushing components made of wood, metal or the like according to the appended claims.
  • number 1 indicates, as a whole, a sanding machine for sanding/finishing/brushing components 2 made of wood, metal or the like, especially beams or columns for the building industry.
  • Each component 2 has an elongated shape and is delimited by an upper face 3 and by a lower face 4, which are substantially parallel to one another, by two end faces 5, which are substantially parallel to one another and perpendicular to the faces 3, and by two side faces 6, which are parallel to one another and perpendicular to the faces 3.
  • the sanding machine 1 comprises a roller conveyor device 7, which extends in a horizontal direction 8 and comprises, in turn, a plurality of motor-driven transport rollers 9, which define a support surface A for the components 2 and are mounted so as to rotate around respective rotates axes 10, which are parallel to one another and to a horizontal direction 11, which is transverse to the direction 8.
  • the components 2 are moved by the device 7 along a path P extending through a plurality of operating units, especially two operating units 12, 13, which are mounted between the rollers 9 and are each designed to process a relative face 6.
  • the sanding machine 1 is provided with a limit stop device 14, which is arranged upstream of the unit 12, extends in the direction 8 and allows the components 2 to be correctly positioned in the direction 11.
  • the unit 12 comprises an elongated frame 15, which extends in the direction 11 and supports an intermediate slide 16, which extends in the direction 11 and is coupled to the frame 15 in a sliding manner through the interposition of a shock absorber device 17 ( figure 6 ) so as to make, relative to the frame 15, straight movements in the direction 11.
  • the device 17 comprises, in particular, a pneumatic cylinder 18, which is fixed to the frame 15 parallel to the direction 11, a pneumatic cylinder 19, which is fixed to the slide 16 parallel to the direction 11 and faces the cylinder 18, and an output rod 20, which is coupled to the cylinders 18, 19 in a sliding manner.
  • the slide 16 supports two conveyor assemblies 21, 22, which are arranged on opposite sides of the path P in the direction 11 and define a feeding channel 23 feeding the components 2 through the unit 12.
  • the assembly 21 is arranged on the side of the path P opposite the one of the device 14 and comprises a horizontal slide 24 with a substantially rectangular shape, which is mounted on the slide 16 is coupled to the slide 16 in a sliding manner and is further coupled, by means of a screw-nut screw coupling, to a screw 25 of a relative operating device 26 ( figure 7 ), a motor 27 thereof causing the rotation of the screw 25 in order to cause the slide 24 to make straight movements along the slide 16 in the direction 11.
  • the device 26 further comprises a nut screw 28, which is coupled to the screw 25 and is engaged by the slide 24 in a sliding manner through the interposition of a shock absorber device 29 ( figure 7 ) comprising two pneumatic cylinders 30, which are mounted between the slide 24 and the nut screw 28 parallel to the direction 11.
  • the assembly 21 is further provided with a rotary platform 31, which is coupled to the slide 24 in a rotary manner so as to rotate, relative to the slide 24, around a fulcrum axis 32, which is parallel to a vertical direction 33 orthogonal to the directions 8 and 11 and is obtained at the entrance of the components 2 into the unit 12 and into the channel 23.
  • the platform 31 is connected to the slide 24 through the interposition, in particular, of a shock absorber device 34 and of three coupling devices 35.
  • the device 34 comprises, in particular, a pneumatic cylinder 36, which is connected to the slide 24, a pneumatic cylinder 37, which is connected to the platform 31 and faces the cylinder 36, and an output rod 38, which is coupled to the two cylinders 36, 37 in a sliding manner.
  • Each device 35 comprises a guide 39, which is fixed to the slide 24 parallel to the direction 11, a recirculating ball slider 40, which is coupled to the guide 39 in a sliding manner, a guide 41, which is obtained on the slider 40 parallel to the direction 8, a recirculating ball slider 42, which is coupled to the guide 41 in a sliding manner, and a rolling bearing 43, which is interposed between the platform 31 and the slider 42 so as to allow the platform 31 and the slider 42 to rotate relative to one another around a rotation axis 44, which is parallel to the direction 33.
  • the platform 31 supports a plurality of motor-driven conveyor rollers 45 (in this case, five rollers 45), which are aligned with one another, face the path P and laterally delimit the channel 23.
  • One of the rollers 45 (hereinafter indicated with 45a) is an input roller mounted so as to rotate around the axis 32 and the other rollers 45 (hereinafter indicated with 45b) are mounted so as to rotate around respective rotation axes 46, which are parallel to one another and to the direction 33.
  • the assembly 22 is integral to the slide 16 in the direction 11 and is mounted downstream of the limit stop device 14 in the direction 8.
  • the assembly 22 is provided with a rotary platform 47, which is coupled to the slide 16 in a rotary manner so as to rotate, relative to the slide 16, around a fulcrum axis 48, which is parallel to the direction 33 and is obtained at the entrance of the components 2 into the unit 12 and into the channel 23.
  • the platform 47 is connected to the slide 16 through the interposition, in particular, of a shock absorber device 49, which is completely equivalent to the device 34, and of four coupling devices 50, which are completely equivalent to the devices 35.
  • the platform 47 supports a plurality of motor-driven conveyor rollers 51 (in this case, three rollers 51), which are aligned with one another, face the path P and laterally delimit the channel 23.
  • One of the rollers 51 (hereinafter indicated with 51a) is an input roller mounted so as to rotate around the axis 48 and the other rollers 51 (hereinafter indicated with 51b) are mounted so as to rotate around respective rotation axes 52, which are parallel to the direction 33.
  • the assembly 22 is further provided with a sanding device 53 comprising three pulleys 54, which are mounted on the platform 47 with a triangle-like arrangement and are coupled to the platform 47 so as to rotate, relative to the platform 47, around respective rotation axes 55, which are parallel to one another and to the direction 33.
  • a sanding device 53 comprising three pulleys 54, which are mounted on the platform 47 with a triangle-like arrangement and are coupled to the platform 47 so as to rotate, relative to the platform 47, around respective rotation axes 55, which are parallel to one another and to the direction 33.
  • Two pulleys 54 are motor-driven drive rollers, which are mounted between the rollers 51b and are moved around the relative axes 55 by an operating device 56 comprising an electric motor 57, which is mounted on the platform 47, and a belt transmission 58, which is interposed between the motor 57 and the pulleys 54a.
  • the third pulley 54 (hereinafter indicated with 54b) is a stretching roller, which is coupled to the platform 47 in a sliding manner so as to move crosswise to the relative axis 55 and stretch an abrasive belt 59 wound around the pulleys 54a, 54b in a ring shape.
  • the belt 59 is caused to come into contact with the relative face 6 to be sanded - and held there - by a pushing roller 60, which is mounted between the pulleys 54a so as to rotate around a longitudinal axis 61 of its parallel to the axes 55 and, furthermore, is movable around a rotation axis (which is not shown herein), which is eccentric relative to the axis 61, from and to an operating position, in which the roller 60 pushes the belt 59 against the relative face 6.
  • a pushing roller 60 which is mounted between the pulleys 54a so as to rotate around a longitudinal axis 61 of its parallel to the axes 55 and, furthermore, is movable around a rotation axis (which is not shown herein), which is eccentric relative to the axis 61, from and to an operating position, in which the roller 60 pushes the belt 59 against the relative face 6.
  • the device 53 further comprises a synchronizing roller 62, which is arranged within the belt 59 and is mounted so as to rotate around a longitudinal axis 63 of its, which is parallel to the axes 55, 61.
  • the roller 62 When the roller 60 is in its operating position, the roller 62 is moved crosswise to the axis 63, due to the thrust of a pneumatic operating device 64, so as to come into contact with the roller 60 and with one of the pulleys 54a in order to synchronize the peripheral speeds of the pulleys 54a and of the roller 60 and avoid friction of the belt 59 on the roller 60.
  • the unit 13 is completely similar to the unit 12 and the only difference from the unit 12 lies in the fact that:
  • the component 2 is caused to come into contact with the limit stop device 14 and, then, is moved by the roller conveyor device 7 and by the conveyor assemblies 21, 22 of the operating units 12, 13 in the direction 8 and along the path P.
  • the sanding machine 1 has two operating modes of the operating units 12, 13 depending on the profile of the side faces 6 of each component 2.
  • the rollers 45a, 45b of the unit 12 and the rollers 51a, 51b of the unit 13 are aligned with one another in the direction 8
  • the rollers 51a, 51b of the unit 12 and the rollers 45a, 45b of the unit 13 are aligned with one another and with the limit stop device 14 in the direction 8 and the feeding channel 23 has a constant width, which is equal to the width of the component 2.
  • the cylinders 19 fixed to the slides 16 of the two units 12, 13 are supplied with a pressure which, in any case, is smaller than the thrust exerted by the component 2 upon the assemblies 21, 22 of the two units 12, 13 so as to make up for possible changes in the shape of the faces 6 of the component 2.
  • the cylinders 30 of the shock absorber devices 29 of the two units 12, 13 are supplied with a pressure which, in any case, is smaller than the thrust exerted by the component 2 upon the assemblies 21, 22 of the two units 12, 13 so as to make up for possible changes in the width of the component 2 due to production size tolerances.
  • the slide 16 and, hence, the assemblies 21, 22 of each unit 12, 13 are movable in the direction 11 depending on the profile of the faces 6 of the component 2 and the platforms 31, 47 and, hence, the assemblies 21, 22 of each unit 12, 13 are movable around the relative fulcrum axes 32, 48 depending on the profile of the faces 6 of the component 2.
  • the path P extends through two further operating units, one of them (hereinafter indicated with 66) being shown in figures 10 and 11 and being configured to sand the bottom left edge 65 and the top right edge 65 and the other one (which is not shown herein) being configured to sand the bottom right edge 65 and the top left edge 65.
  • the unit 66 comprises a frame 67, an intermediate slide 68 and a shock absorber device 69, which are completely equivalent to the frame 15, to the intermediate slide 16 and to the shock absorber device 17 of the units 12, 13.
  • the slide 68 supports two conveyor assemblies 70, 71 arranged on opposite sides of the path P in the direction 11.
  • the assembly 70 is integral to the slide 68 in the direction 11, is aligned with the limit stop device 14 in the direction 8 and is provided with a vertical upright 72 projecting upwards from the slide 68 in the direction 33.
  • the upright 72 supports a plurality of motor-driven conveyor rollers 73 (in particular, two rollers 73), which are aligned with one another and with the device 14 in the direction 8, face the path P, laterally delimit the channel 23 and are mounted so as to rotate around respective rotation axes 74, which are parallel to the direction 33.
  • motor-driven conveyor rollers 73 in particular, two rollers 73
  • the upright 72 supports a plurality of motor-driven conveyor rollers 73 (in particular, two rollers 73), which are aligned with one another and with the device 14 in the direction 8, face the path P, laterally delimit the channel 23 and are mounted so as to rotate around respective rotation axes 74, which are parallel to the direction 33.
  • the assembly 70 further comprises a sanding device 75 provided with a first support plate 76, which is mounted on the upright 72 and is inclined relative to the surface A so as to be substantially perpendicular to the relative edge 65, with a second support plate 77, which is coupled to the plate 76 in a sliding manner so as to move, relative to the plate 76, in the direction 8, and with a bracket 78, which is coupled to the plate 76 in a rotary manner so as to rotate, relative to the plate 76 and due to the thrust of an operating device 79, which is better described below, with an oscillatory reciprocating motion around a fulcrum axis 80, which is parallel to the plate 76.
  • a sanding device 75 provided with a first support plate 76, which is mounted on the upright 72 and is inclined relative to the surface A so as to be substantially perpendicular to the relative edge 65, with a second support plate 77, which is coupled to the plate 76 in a sliding manner so as to move, relative to the plate 76
  • the device 75 has three pulleys 81, which are mounted on the plate 76 with a triangle-like arrangement, and an abrasive belt 82 wound around the pulleys 81 in a ring shape.
  • a first pulley 81 (hereinafter indicated with 81a) is a motor-driven roller mounted on the plate 76 so as to rotate around a longitudinal axis 83 of its, which is perpendicular to the plate 76, due to the thrust of an operating device 84 comprising an electric motor 85, which is fixed to the plate 76, and a belt transmission 86, which is interposed between the roller 81a and the motor 85.
  • a second pulley 81 (hereinafter indicated with 81b) is a stretching roller, which is mounted on the plate 77 so as to rotate around a longitudinal axis 87 of its parallel to the axis 83 and is moved by the plate 77 in the direction 8 so as to stretch the belt 82.
  • a third pulley 81 (hereinafter indicated with 81c) is mounted on the bracket 78 so as to rotate around a longitudinal axis 88 of its, whose orientation depends on the position of the bracket 78 around the axis 80.
  • the oscillatory reciprocating motion of the bracket 78 and, hence, of the pulley 81c around the axis 80 generates a straight reciprocating motion of the belt 82 along the pulleys 81a, 81b, 81c and, hence, a relatively even wear of the belt 82.
  • the device 79 comprises a reduction unit 89, which is fixed to the bracket 78 and has an input shaft 90, which is mounted so as to rotate around a longitudinal axis 91 of its parallel to the axis 88 and is connected to the pulley 81c through the interposition of a belt transmission 92.
  • the reduction unit 89 is further provided with an output shaft 93 comprising a first portion 94, which is coupled to the shaft 90 so as to rotate around a longitudinal axis 95 of its transverse to the axis 91, and a second portion 96, which has a longitudinal axis 97 parallel to the axis 95, is coupled to the portion 94 in an angularly fixed manner ans is further coupled to the portion 94 in a sliding manner so as to be moved, during a set-up phase for setting up the sanding device 75, crosswise to the axis 97.
  • the portion 96 is axially locked on the portion 94 by means of a fastening screw (not shown herein), which extends through a slot 98 obtained in the portion 96, is screwed into the portion 94 and allows the eccentricity of the axis 97 relative to the axis 95 to be selectively controlled.
  • the portion 96 is engaged in a rotary manner, through the interposition of a rolling ball bearing which is not shown herein, through a first free end of a connecting rod 99, whose second free end is connected, through the interposition of a ball joint which is not shown herein, to a coupling pin 100, which projects, crosswise to the axis 80, from a support bracket 101 fixed to the plate 76 perpendicularly to the plate 76.
  • the rotary motion of the pulley 81c around the axis 88 is transmitted by the belt transmission 92, first of all, to the input shaft 90 and, then, to the output shaft 93 of the reduction unit 89 so as to move the portion 94 around the axis 95 and the portion 96 around the axis 97.
  • the portion 96 Since the portion 96 is engaged through the connecting rod 99, which, in turn, is connected to the bracket 101 and, hence, to the plate 76, the portion 94 is caused to rotate around the eccentric axis 97, thus generating the oscillatory reciprocating motion of the bracket 78 around the axis 80.
  • the oscillatory reciprocating motion of the pulley 81a around the axis 80 generates a straight reciprocating motion of the belt 82 along the pulleys 81a, 81b, 81c parallel to the relative axes 83, 87, 88 and a substantially even wear of the belt 82 over a relatively large width of the belt 82.
  • the straight reciprocating motion of the belt 82 along the pulleys 81a, 81b, 81c has a back stroke and a forth stroke, which are independent of the speed of movement of the belt 82 around the pulleys 81a, 81b, 81c, depend on the width of the oscillation of the bracket 78 around the axis 80 and, hence, on the eccentricity between the axes 95 and 97 and are selectively controlled by changing the eccentricity between the axes 95 and 97.
  • the device 76 further comprises a pushing element 102, which is mounted between the pulleys 81b and 81c and is movable, due to the thrust of a pneumatic actuator cylinder 103 fixed to the plate 76, between a forward operating position, in which the element 102 causes the belt 82 to come into contact with the relative edge 65, and a retracted rest position, in which the belt 82 disengages the edge 65.
  • a pushing element 102 which is mounted between the pulleys 81b and 81c and is movable, due to the thrust of a pneumatic actuator cylinder 103 fixed to the plate 76, between a forward operating position, in which the element 102 causes the belt 82 to come into contact with the relative edge 65, and a retracted rest position, in which the belt 82 disengages the edge 65.
  • the assembly 71 is arranged on the side of the path P opposite the one of the device 14 and comprises a horizontal slide 104, which is mounted on the slide 68 and is coupled to the slide 68 in a sliding manner so as to make straight movements along the slide 68 in the direction 11 due to the thrust of an operating device, which is completely equivalent to the operating device 26, and through the interposition of a shock absorber device, which is completely equivalent to the shock absorber device 29.
  • the slide 104 extends upwards in the direction 33 and supports a plurality of motor-driven conveyor rollers 105 (in particular, two rollers 105), which are aligned with one another in the direction 8, face the path P, laterally delimit the channel 23 and are mounted so as to rotate around respective rotation axes 106, which are parallel to the direction 33.
  • the slide 104 is engaged in a sliding manner by a vertical slide 107, which, during a set-up phase for setting up the assembly 71, is moved by an operating device 108 along the slide 104 in the direction 33 depending on a height of the component 2.
  • the slide 107 supports a sanding device 109, which is completely equivalent to the sanding device 75 and is hinged to the slide 107 so as to rotate, relative to the slide 107 and due to the thrust of a pair of actuator cylinders 110, around a fulcrum axis 111, which is substantially parallel to the direction 8, between an operating position, in which the device 109 sands the relative edge 65, and a rest position, which is suited to allow the belt 82 to be replaced.
  • a sanding device 109 which is completely equivalent to the sanding device 75 and is hinged to the slide 107 so as to rotate, relative to the slide 107 and due to the thrust of a pair of actuator cylinders 110, around a fulcrum axis 111, which is substantially parallel to the direction 8, between an operating position, in which the device 109 sands the relative edge 65, and a rest position, which is suited to allow the belt 82 to be replaced.
  • the operating unit (not shown) mounted downstream of the unit 66 in the direction 8 is completely equivalent to the unit 66 and the only difference from the unit 66 lies in the fact that:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP21213651.9A 2020-12-11 2021-12-10 Eine schleifmaschine zum schleifen / finishen / bürsten von bauteilen aus holz, metall oder dergleichen Pending EP4011549A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202000030566 2020-12-11

Publications (1)

Publication Number Publication Date
EP4011549A1 true EP4011549A1 (de) 2022-06-15

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EP21213651.9A Pending EP4011549A1 (de) 2020-12-11 2021-12-10 Eine schleifmaschine zum schleifen / finishen / bürsten von bauteilen aus holz, metall oder dergleichen

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EP (1) EP4011549A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024025816A1 (en) * 2022-07-26 2024-02-01 Corning Incorporated Low-friction sanding assemblies and machines

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299512B1 (en) * 1999-05-13 2001-10-09 Alessandro Costa Belt sander with orbitally translated abrasive belt
US20030104772A1 (en) * 2001-12-05 2003-06-05 Chuang Bor Yann Roller swaying device for an emery belt machine
US20050095965A1 (en) * 2003-10-31 2005-05-05 Chuang Po C. Grinding-band swaying device for a band grinding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299512B1 (en) * 1999-05-13 2001-10-09 Alessandro Costa Belt sander with orbitally translated abrasive belt
US20030104772A1 (en) * 2001-12-05 2003-06-05 Chuang Bor Yann Roller swaying device for an emery belt machine
US20050095965A1 (en) * 2003-10-31 2005-05-05 Chuang Po C. Grinding-band swaying device for a band grinding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024025816A1 (en) * 2022-07-26 2024-02-01 Corning Incorporated Low-friction sanding assemblies and machines

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