WO2013165483A2 - Outil d'alignement de disque abrasif - Google Patents

Outil d'alignement de disque abrasif Download PDF

Info

Publication number
WO2013165483A2
WO2013165483A2 PCT/US2013/020469 US2013020469W WO2013165483A2 WO 2013165483 A2 WO2013165483 A2 WO 2013165483A2 US 2013020469 W US2013020469 W US 2013020469W WO 2013165483 A2 WO2013165483 A2 WO 2013165483A2
Authority
WO
WIPO (PCT)
Prior art keywords
tool
disk
pins
platen
dust collection
Prior art date
Application number
PCT/US2013/020469
Other languages
English (en)
Other versions
WO2013165483A3 (fr
Inventor
Chris R. TURNER
Original Assignee
Turner Chris R
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
Priority claimed from US13/709,621 external-priority patent/US20140162535A1/en
Application filed by Turner Chris R filed Critical Turner Chris R
Publication of WO2013165483A2 publication Critical patent/WO2013165483A2/fr
Publication of WO2013165483A3 publication Critical patent/WO2013165483A3/fr

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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material
    • B24D9/085—Devices for mounting sheets on a backing plate

Definitions

  • the present invention relates to the field of handheld power tools and, more specifically to a device for use in conjunction with a power sanding tool for proper alignment of the coated abrasive.
  • Sanding the process of smoothing and shaping a material surface by rubbing with an abrasive, has many applications in industrial production and finishing of materials such as wood, metal and fiberglass.
  • an abrasive coated paper or cloth i.e., sandpaper
  • the process can be accelerated and the results improved with the use of handheld power tools that mount and move the sandpaper on the work surface.
  • Power sanders are available in a wide variety of designs including palm sanders such as the random orbital sander which typically has a round sanding platen to which a sandpaper disc is removeably mounted by pressure sensitive adhesive (PSA) or hook-and-loop fastener.
  • PSA pressure sensitive adhesive
  • Random orbital sanders are very effective at removing material from the work surface and, by design, create a significant amount of dust in the process. Inhaling airborne sanding dust is unhealthy for the operator of the tool.
  • Dust that remains on the work surface may damage the work surface and negatively impacts the effectiveness and lifespan of the abrasive disk. Consequently, many random orbit sanders are provided with a dust collection means that attempts to capture and remove the dust generated by the sanding process.
  • a typical dust collection system has a pattern of holes through the platen and into a plenum within the tool housing that is negatively pressurized by an internal fan or by connection to an external vacuum source.
  • a cooperative series of holes provided in the sanding disk allows ambient air to be drawn into the plenum as a result of the low internal pressure, pulling with it the sanding dust before the dust can become airborne or be ground against the work surface by the operation of the sander.
  • Platen hole patterns may include from 5 to 9 holes (or more) typically evenly spaced radially at a predetermined distance from the center of the disk. A center hole may or may not be provided.
  • a common 8-hole pattern positions 8 holes on a circle 2 1 ⁇ 2” inches in diameter at 60 degree intervals on a five inch sanding disk.
  • a sander having a platen of this design is depicted in FIG. 3.
  • US 6,663,478 B1 (ULRICH, LOUIS) issued December 16, 2003 describes a sandpaper disc loading device that includes a planar support plate from which a plurality of dowels extends in corresponding alignment with the holes in a sanding disc and platen. A disk is inserted over the dowels with the abrasive side toward the support plate and the dowels advance through the platen holes until the back side of the disk engages the surface of the platen.
  • the invention is described as a self-standing device capable of holding multiple sanding discs easing the ability to align the disc to the paper by sliding all of the dowels into the platen at once.
  • a sanding disk alignment tool having a base member with at least two pins extending from a surface, the pins sized and positioned for cooperative insertion into the pluralities of dust collection holes in the disk and platen.
  • the base member is a longitudinal element having a longitudinal edge from which the pins extend. The length of the base member is determined as a function of the hole spacing while the cross- sectional width of the base member is a function of the diameter of the sanding disk.
  • the longitudinal edge is preferably radiused to facilitate bending of the sanding disk around the tool without creasing or otherwise damaging the abrasive surface.
  • the distance between the pins and/or the set of operative pins is selectively variable to permit use of the tool with sanders having differing platen hole patterns.
  • the base member is a flexible planar element with multiple pins in a linear arrangement extending from a single side.
  • the method of using the disclosed invention includes the steps of inserting the pins through two of the dust collection holes in the sanding disk from the abrasive side, bending the sanding disk around the tool, inserting the pins into through two of the plurality of dust collection holes in the sander platen and advancing the tool and disk to engage the platen. Once initially engaged to the platen, the bend in the disk is released and the sides of the disk are laid down onto and adhered to the platen, after which the tool is removed.
  • FIG. 1 is perspective view of a tool according to the present invention.
  • FIG. 2 is an end view of a tool according to the present invention.
  • FIG. 3 is a section view of a tool according to the present invention.
  • FIG. 4 is a perspective view of a tool according to the present invention with a sanding disk loaded for use.
  • FIG. 5 is a perspective view of a tool according to the present invention loaded with a sanding disk and mated in cooperative alignment with a sander.
  • FIG. 6 is a perspective view of an alternate embodiment of the present invention.
  • FIG. 7 is a perspective view of a second alternate embodiment of the present invention.
  • FIG. 8 is a perspective view of a third alternate embodiment of the present invention. DESCRIPTION OF PREFERRED EMBODIMENS
  • a preferred embodiment of a sanding disk alignment tool 10 is depicted including a base member 12.
  • the base member 12 is a linear member having an upper edge 14 and a lower edge 16.
  • the length of the base member 12 is sufficient to properly position the pins 20 of the invention for cooperative engagement with the dust collection holes H of the platen P of a sander S, typically a random orbital sander, as will be described below.
  • the length of the base member is approximately 75 mm (3 inches) but it will be recognized by one skilled in the art that the length will vary in cooperation with the dimensions of the sander platen with which it is to be used.
  • the cross-sectional width W (see Fig.
  • the base member 12 is significantly less than the length and is selected as a function of the diameter and material properties of the sanding disk A with which it is to be used in order to permit the desired bending of the disk without damage to the disk’s abrasive surface.
  • the base member 12 is approximately 12.5 % of the diameter of the sanding disk such that, if intended for use with a 127 mm (5”) disk, the width W will be approximately 16 mm (5/8”).
  • the cross-sectional width of the longitudinal base member 12 may preferably be up to 40% of the diameter of the disk, with the best results achieved where the base member 12 is not more than 25% of the diameter of the disk. If intended for use with a 127 mm (5”) disk, the cross-sectional width may thus preferably be up to 51 mm (2.0”) and more preferably up to 32 mm (1.25”).
  • the lower bound of width is a limited only by the material properties of the material from which the base member 12 is constructed but it will be understood that below a certain minimum which varies depending on the material properties of the sanding disk, further reducing the width of the base member will not further reduce the radius of curvature of the disk and increases rather than decreases the risk of creasing or over-bending the sanding disk.
  • the base member 12 is beyond 40% of disk diameter in cross-sectional width then the base member 12 is no longer considered linear unless the lower edge 16 is radiused, as described below.
  • two posts or pins 20 extend from the lower edge 16 of the base member 12 at or near the ends of the longitudinal member as shown. It should be observed that relative terms of position such as“upper” and“lower” are used in this application to described the invention as depicted in the figures or otherwise manipulated or described and are not intended to be limiting. In use, the device may be held such that the elements are positioned in any direction relative to one another.
  • the pins 20 are coplanar with the edge 16 and extend in parallel alignment with one another. Pins 20 are positioned a distance D equal to the distance between two dust collection holes H, H’in the sander platen/sanding disk with which it is to be used.
  • the distance D is selected as between two holes H aligned on a diameter of the disk/platen.
  • a third pin 20 may be provided for cooperative insertion therein.
  • the distance D is preferably selected as between two holes H as close to opposite one another about the center as possible.
  • D may preferably be selected between any radial hole and the center hole.
  • the pins 20 are formed for cooperative insertion in the holes H of the sander platen P. Most commonly the holes H and thus the pins P are circular in cross section. The diameter of the pins 20 is selected for snug insertion into the holes of the platen such that the pins can be easily inserted or removed but have little or no lateral play within the holes of the platen when fully inserted.
  • the terms“diameter” and“radius” as used herein are not limited to their respective ordinary geometric meanings relative to a circle but rather include equivalent dimensions of non-circular forms such as, for example, the length and/or width a
  • the pins 20 are approximately 10 mm (3/8”) in diameter for snug insertion into holes of H of a commonly utilized size.
  • the distal ends of the pins 20 may be tapered or rounded to facilitate insertion into the holes of the platen.
  • the length of the pins 20 need only be sufficient to be fully inserted and seated within the holes of the platen and are short enough to permit them to be advanced entirely into the holes of the platen such that the lower edge 16 engages the surface of the platen.
  • the pins 20 are 13 mm (1 ⁇ 2”) in length.
  • a handle 30 is provided from the upper edge 14 of the base member 12.
  • the handle 30 is a generally planar element within the plane of the longitudinal base member 12, as depicted, and has a length sufficient such that the distance from the lower edge 16 to the distal end of the handle 30 is substantially equal to or greater than the radius of the sanding disc with which it is intended to be used.
  • a handle 30 is substantially equal to the radius of the sanding disc if a user gripping the tool as in FIG. 4 is able to grip the handle and the disk between the thumb and forefinger.
  • the handle 30 is preferably centered on the longitudinal base member 12 between the pins 20 and in certain embodiments may extend the entire length of the base member 12, although this need not be the case.
  • the handle 30 may be integral with the base member 12 such that the base member 12 and handle 30 together form a unitary, planar or monolithic element and such is included within the term longitudinal base member as used herein.
  • a hole may be provided through the handle 30 to secure the handle as by tying to an apron by a string.
  • the lower edge 16 of the longitudinal base member 12 is preferably radiused (arcuate) with a radius R such that a sanding disk engaged on or to the tool and bent around the lower edge 16 for loading onto the platen of a sander will not be creased or damaged.
  • the radius need not be continuous or of a single dimension and is preferably from 20% to 100% of the diameter of the disk with which it is intended to be used in order to provide a smooth curvature to back the disk without damage when loaded onto the tool.
  • the radius R of the lower edge 16 of a tool for use with a 127 mm (5”) disk is 76 mm (3”), but may be anywhere from 55 mm to 127 mm (2” to 5”).
  • the lower edge 16 of the longitudinal member 12 may be formed as a sector of a regular pentagon, hexagon or octagon, may be rectangular (with or without rounded or individually radiused edges/corners) or triangular (i.e., tapered substantially to a point or small radius) and such is included within the term radiused.
  • the cross-sectional width of the base member 12 may be increased to as much as 85 % of the diameter of the sanding disk and yet still be within the definition of the term linear as used herein.
  • the arcuate surface provided by the radius supports the disk and facilitates bending.
  • the cross-sectional width of the base member can be increased within the radius of the arcuate surface without impeding the ability of the disk to curve or bend as described below. That is, radiusing the lower edge 16 facilitates curvature of the loaded sanding disk in the same manner as a substantially thinner base member 12 with a rectilinear lower edge.
  • the base member of a tool according to an embodiment of the present invention for use with a 127 mm (5”) disk could have a cross-sectional width of only 51 mm (2”) where a rectilinear cross section is provided but a cross sectional width of up to 108 mm (4.25”) if the lower surface is radiused.
  • the lateral margins of the base member 12 are more than 15 mm (0.6”) from the surface of the platen when the apex of the radiused lower surface is on the surface of the platen such that only the narrow strip of the adhering surface of the disk along the apex interact with the surface of the platen. Alignment of the disk with the surface of the platen is simplified because only that limited portion of the adhering surface need be aligned and engaged with the surface prior to releasing the wings of the disk as described below.
  • a first step in using a tool 10 according to the present invention is to load an abrasive sanding disk A by inserting the pins 20 through the appropriate holes H’ of the sanding disk from the abrasive side.
  • the pins 20 through the holes H’ and the base member 12 advanced to or near the abrasive surface of the disk the sides or wings of the disk extending laterally away from the longitudinal member 12 are bent backward to or toward the handle 30 (around the tool), as best seen in FIG. 5, and held in this position by the user.
  • the lower edge 16 of the longitudinal member 12 is engaged to the abrasive side of the disk and the disk is curved or bent around the lower edge 16 without creasing.
  • the lower edge 16 is radiused, less care is required of the user to ensure that the disk does not crease at the bend line as the radiused edge distributes the bending of the disk around the entirety of the curvature.
  • the lower edge 16 is rectilinear, some care is required of the user to ensure that disk A is not too tightly curved and the base member 12 too forcefully pressed against the abrasive surface that a crease develops where the rectilinear corners engage the disk.
  • the user will be able to maintain the disk and tool in this orientation with one hand while aligning the pins 20 with the holes of the platen of a sander held inverted in the opposite hand as depicted in FIG. 4.
  • the tool is advanced toward the platen, led by the apex of the curve (typically, the centerline of the disk) such that it is only necessary to align the tool with the surface of the platen along that centerline (i.e., in one dimension, rather than in two dimensions as is required if the disk is advanced toward the surface of the platen in a planar configuration).
  • the pins 20 have been fully advanced into the holes H (FIG.
  • the tool 10 of the present invention is made as a single unit formed of suitable material such as plastic (ABS, polystyrene, PVC, polycarbonate, polyurethane), wood or metal. Injection molded single part plastic construction may provide the most economical construction. However, unitary construction is limited in as much as the distance D and pin 20 diameter are fixed such that a given tool 10 is suitable for use with only a single sander platen dust extraction hole pattern. With reference to FIGs.7, an alternate embodiment of a tool 100 according to the present invention is depicted in which multiple pin configurations are possible.
  • Tool 100 is provided with a longitudinal base member 112 substantially as described above with respect to base member 12 except that the base member 112 is selectively rotatable about its longitudinal axis X with respect to the handle 130. Additionally, two sets of pins 120 and 120’ are provided, one each on the upper and lower sides 114, 116 of the base member 112 such that the diameter of the pins 120, 120’ and distance D between them corresponds to a different platen dust collection hole pattern. The operative set of pins 120, 120’ is selected by rotating the longitudinal base member 112 relative to the handle 130 and securing it in place such that the desired set of pins 120, 120’ extends from the longitudinal member opposite the handle.
  • variable pins 120, 120’ not in use remains out-of-the way beside the handle 130 and does not impede operation.
  • Various other variable pin constructions are envisioned. Such alternatives include pins moveable between multiple sockets in the lower side of the longitudinal member and exchangeable with alternate pins of different diameter.
  • Another alternative embodiment 100 of variable pin configuration depicted in FIG. 7 permits one or both portions 12A, 12B of the longitudinal base member to selectively slide longitudinally relative to one another to permit a variable distance D.
  • Tool 200 is comprised of a planar base member 212, preferably circular in form and having a diameter substantially equal to that of the sanding disk with which it is intended to be used.
  • Planar base member 212 is preferably constructed of a strong, lightweight polymer that is flexible in sheet form such as, for example, acrylic, polyethylene, polycarbonate, or polyurethane.
  • planar base member 212 may be formed of a rigid sheet plastic bent or bowed and fixed into a curved shape that resembles a traditional hard taco shell.
  • a pair of pins 220 substantially similar to pins 20 are provided extending from one side of the planar base member 212.
  • Pins 220 are preferably situated symmetrically with respect to the center of the preferably circular planar member and are positioned and sized for cooperative insertion into the dust extraction holes H of a sander platen as described above with respect to pins 20 of the previously described embodiment 10.
  • the palnar base is formed from a rigid sheet
  • the pins 220 are situated on the outside surface of the shell along the apex of the curve.
  • an abrasive disk A is placed abrasive side down on the preferably flexible planar member such that the pins 212 extend through the cooperatively positioned holes H’ of the disk A.
  • the flexible planar member 212 and disk A are then together curled or curved backward (in a direction opposite the side of the planar member 212 from which the pins 220 extend) along a line running through the two pins 212 until they approach or meet each other such that the pins 212 are extended from the apex of the curve for easy insertion into holes H as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un outil (10) d'alignement de disque abrasif, destiné à aligner un disque abrasif qui comporte une pluralité d'orifices de collecte de poussière sur une platine de ponceuse, ayant une pluralité d'orifices coopératifs, ainsi qu'un procédé d'utilisation de celui-ci. L'outil comprend un élément de base (12), doté d'au moins deux broches (20) calibrées et positionnées pour une insertion par coopération dans les pluralités d'orifices de collecte de poussière s'étendant depuis une surface de celui-ci. Le procédé comprend les étapes d'insertion des broches à travers deux des orifices de collecte de poussière dans le disque abrasif, depuis le côté abrasif, de courbure du disque abrasif autour de l'outil, d'insertion des broches dans deux orifices parmi la pluralité d'orifices de collecte de poussière dans la platine de ponceuse et d'avance de l'outil et du disque pour se mettre en prise avec la platine. Une fois initialement en prise avec la platine, la courbure du disque est relâchée et les côtés du disque sont placés sur la platine, puis l'outil est retiré.
PCT/US2013/020469 2012-05-01 2013-01-07 Outil d'alignement de disque abrasif WO2013165483A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261641100P 2012-05-01 2012-05-01
US61/641,100 2012-05-01
US13/709,621 2012-12-10
US13/709,621 US20140162535A1 (en) 2012-12-10 2012-12-10 Sanding disk alignment tool

Publications (2)

Publication Number Publication Date
WO2013165483A2 true WO2013165483A2 (fr) 2013-11-07
WO2013165483A3 WO2013165483A3 (fr) 2015-06-18

Family

ID=49515004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/020469 WO2013165483A2 (fr) 2012-05-01 2013-01-07 Outil d'alignement de disque abrasif

Country Status (1)

Country Link
WO (1) WO2013165483A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD904908S1 (en) 2019-04-02 2020-12-15 Alan Borack Sanding disk alignment jig

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US761523A (en) * 1903-09-09 1904-05-31 Dugald Stewart Miller Jr Spanner-wrench.
US6748994B2 (en) * 2001-04-11 2004-06-15 Avery Dennison Corporation Label applicator, method and label therefor
US6663478B1 (en) * 2002-03-15 2003-12-16 Louis Ulrich Sand paper disc loading device
US7144313B1 (en) * 2003-12-19 2006-12-05 Greenwood Tim R Abrasive sheet alignment dispenser
DE102010038504B4 (de) * 2010-07-28 2020-10-01 Robert Bosch Gmbh Vorrichtung zum Positionieren eines flächigen Arbeitsmittels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD904908S1 (en) 2019-04-02 2020-12-15 Alan Borack Sanding disk alignment jig

Also Published As

Publication number Publication date
WO2013165483A3 (fr) 2015-06-18

Similar Documents

Publication Publication Date Title
US5231803A (en) Automated random orbital abrading method
US9302364B2 (en) Hand-held tool sharpener with flexible abrasive disk
US20050272358A1 (en) Flap-type rotary finishing device
US5569064A (en) Tool for refurbishing skate blades
US6193337B1 (en) Abrasive sheet dispenser
DE50306585D1 (de) Schleifteller für Schleifmaschine
CN106808869A (zh) 一种单手卷笔刀
US20140162535A1 (en) Sanding disk alignment tool
US7144313B1 (en) Abrasive sheet alignment dispenser
US4133146A (en) Rotary abrasive tool
US10814451B2 (en) Powered sharpener with controlled deflection of flexible abrasive member
WO2013165483A2 (fr) Outil d'alignement de disque abrasif
US20110183588A1 (en) Abrading Device
US8684792B2 (en) Sanding system with vacuum
US3030742A (en) Sanding pad
US20160279759A1 (en) Hand sander vacuum adapter
US3827194A (en) Piercing of suction holes in sanding discs
US9326581B1 (en) Nail abrading implement
US20140273775A1 (en) Sand Flap Work Piece Finishing Tool
EP3209462B1 (fr) Dispositif d'aiguisage
US20170113327A1 (en) Sanding device
US10603759B1 (en) Form-following rotary bit for improved grinding, sanding, buffing and the like
CN216098148U (zh) 打磨器组件
TWI727908B (zh) 具有改良結構之手持砂帶研磨機
GB2482419A (en) Tool for aligning sandpaper with a sanding plate

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: 13784708

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 13784708

Country of ref document: EP

Kind code of ref document: A2