EP2974828B1 - Verfahren und Vorrichtung zum Befestigen einer Schleifscheibe an einer Handschleifmaschine - Google Patents

Verfahren und Vorrichtung zum Befestigen einer Schleifscheibe an einer Handschleifmaschine Download PDF

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Publication number
EP2974828B1
EP2974828B1 EP14177094.1A EP14177094A EP2974828B1 EP 2974828 B1 EP2974828 B1 EP 2974828B1 EP 14177094 A EP14177094 A EP 14177094A EP 2974828 B1 EP2974828 B1 EP 2974828B1
Authority
EP
European Patent Office
Prior art keywords
sanding
datum
sander
pegs
disc
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.)
Active
Application number
EP14177094.1A
Other languages
English (en)
French (fr)
Other versions
EP2974828A1 (de
Inventor
Jerry Horn
John Michael Thiergartner
Steven R. Van Dyke
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.)
Rud Starcke GmbH and Co KG
Original Assignee
Rud Starcke GmbH and Co KG
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 Rud Starcke GmbH and Co KG filed Critical Rud Starcke GmbH and Co KG
Priority to EP14177094.1A priority Critical patent/EP2974828B1/de
Priority to ES14177094.1T priority patent/ES2630104T3/es
Priority to PCT/EP2015/065978 priority patent/WO2016008850A1/en
Publication of EP2974828A1 publication Critical patent/EP2974828A1/de
Application granted granted Critical
Publication of EP2974828B1 publication Critical patent/EP2974828B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • 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
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
    • 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 disclosure relates generally to apparatus and methods for attaching to and detaching a sanding disc from a hand sander.
  • a hand sander and sanding disc fixture as well as a method for attaching a sanding disc to a hand sander are, for example, known from FR 2 999 107 A1 .
  • the sanding discs are typically coated on one side with a sandpaper-like texture. These discs are available from many venders.
  • the abrasive disc is typically held on a sander pad that is mounted on the hand sander, such as with a hook-and-loop fastener system.
  • the discs are designed to be used until the abrasive surface has degraded. The disc is then removed from the sander pad and discarded. A replacement disc can then be placed on the sander pad, and sanding can resume.
  • At least some known hand sanders are coupled to a vacuum system to remove dust and/or debris generated during a sanding operation.
  • the sanding disc includes openings defined therein and the sander pad includes corresponding openings through which dust and/or debris are pulled by a vacuum created by the vacuum system.
  • a hand sander and sanding disc fixture for attaching a sanding disc to a hand sander.
  • the fixture includes a table have a top, a sander storage station on the table, and an application station on the table.
  • the sander storage station has a holder holding a hand sander having a sander pad on the top of the table.
  • the application station has at least two datum pegs extending from the top of the table.
  • the datum pegs hold a stack of sanding discs with attaching sides of the sanding discs facing away from the top of the table.
  • the datum pegs pass through datum holes in the sanding discs.
  • the at least two datum pegs having datum surfaces configured to be received in datum notches in an outer diameter of the sander pad.
  • the datum pegs align the sander pad with the sanding discs when the sander pad is pressed against the attaching side of the outermost sanding disc.
  • a method of attaching a sanding disc to a hand sander includes providing a sanding disc application station with at least two datum pegs extending from a top of a table. The method includes positioning a sanding disc at the application station with the at least two datum pegs extending through datum holes in the sanding disc, the sanding disc being positioned with an attaching side of the sanding discs facing away from the top of the table.
  • the method includes aligning a hand sander with the application station by pressing the hand sander against the at least two datum pegs such that datum notches in an outer diameter of a sander pad of the hand sander receive the at least two datum pegs.
  • the method includes sliding the hand sander in an attaching direction toward the top of the table along the at least two datum pegs until the sanding pad is pressed against the attaching side of the sanding disc and the sanding disc is attached to the sanding pad.
  • a sander pad is provided that includes an attachment shaft extending from a first surface of the sander pad for coupling the sander pad to a sanding device.
  • An attachment surface is positioned on a second surface of the sander pad, opposite to the first surface of the sander pad, and configured to removably couple a sanding disc to the sander pad.
  • a plurality of datum notches are formed in a perimeter of the sander pad and configured to facilitate alignment of the sanding disc and the sander pad.
  • Figure 1 is a perspective view of a hand sander and sanding disc fixture 100 formed in accordance with an exemplary embodiment.
  • Figure 2 is a front perspective view of the fixture 100.
  • Figure 3 is another front perspective view of the fixture 100.
  • Figure 4 is a rear perspective view of the fixture 100.
  • Figure 5 is a top view of the fixture 100.
  • the fixture 100 is used to support a hand sander 102 ( Figure 1 ) and a plurality of sanding discs 104 ( Figure 1 ) during periods of use and non-use.
  • the fixture 100 is used for attaching and detaching the sanding discs 104 to and from the hand sander 102.
  • the fixture 100 includes a table 106 having a top 108.
  • the table 106 includes sides 110, 112, a front 114 and a rear 116.
  • the table 106 may be angled such that the top 108 is non horizontal.
  • the front 114 may be lower than the rear 116.
  • the table 106 may be angled between 30° and 60°.
  • the table 106 may be oriented horizontally.
  • the table 106 may be oriented vertically.
  • the sides 110, 112 may be adjustable to vary the angle of the table 106.
  • adjustable brackets may be provided on the sides 110, 112 to adjust the angle of the top 108 of the table 106.
  • the fixture 100 includes a plurality of stations that serve different functions.
  • the fixture 100 includes a hand sander storage station 120, a sanding disc storage station 122, a sanding disc application station 124, and a sanding disc removal station 126.
  • other stations may be added as desired.
  • the stations may be oriented to conveniently access the hand sander 102 and/or the sanding discs 104.
  • the hand sander 102 is stored in the storage station 120 when the hand sander 102 is not in use.
  • a plurality of the sanding discs 104 is stored in the sanding disc storage station 122 for easy access when additional sanding discs 104 are needed.
  • the sanding discs 104 may be stored in groups or stacks 128 of sanding discs 104. Each stack 128 of sanding discs 104 may include any number of sanding discs 104, such as approximately 25 sanding discs.
  • stacks 128 of sanding discs 104 may be placed in the sanding disc storage station 122 as a group and/or may be removed from the sanding disc storage station 122 as a group, such as to move one stack of the sanding discs 104 at a time from the sanding disc storage station 122 to the sanding disc application station 124.
  • the sanding discs 104 at the application station 124 are ready for attachment to the hand sander 102 when the sanding disc 104 on the hand sander 102 needs to be replaced.
  • the sanding disc 104 on the hand sander 102 may be removed at the removal station 126.
  • the removal station 126 may be provided at any location, such as along the sides 110 and/or 112, along the front 114 or at another location. After removal, the outermost sanding disc 104 at the application station 124 may be easily and conveniently applied to the hand sander 102.
  • the hand sander 102 includes a sander pad 130 coupled to a sanding device 132 that causes the sander pad 130 to rotate during a sanding operation.
  • the sanding device 132 is pneumatically operated.
  • the sanding device 132 may be electrically operated.
  • a vacuum system 134 is coupled to the sanding device 132 to remove dust and debris during the sanding operation.
  • the vacuum system 134 creates a vacuum through holes in the sander pad 130 and holes in the sanding disc 104 to remove dust and debris during the sanding operation.
  • FIG 6 is a bottom perspective view of the sander pad 130 in accordance with an exemplary embodiment.
  • the sander pad 130 includes an attachment shaft 136 extending from a top or first side 138 of the sander pad 130.
  • the attachment shaft 136 is used to attach the sander pad 130 to the sanding device 132 (shown in Figure 1 ).
  • the attachment shaft 136 may be threaded.
  • the attachment shaft 136 may have external threads or internal threads, such as in a threaded bore, which are used to secure the sander pad 130 to the sanding device 132.
  • Other types of attachment components may be used in alternative embodiments.
  • the sander pad 130 includes a plurality of vacuum holes 140 in spaced relation to one another.
  • the precise shape, size, and configuration of the vacuum holes 140 are not critical to the present disclosure.
  • a sander pad 130 having a different number, size, and shape of vacuum holes 140 could be used instead of the embodiment shown.
  • the sander pad 130 may not include any holes of any kind.
  • the size, shape, and position of the vacuum holes 140 may be related to the vacuum system 134 (shown in Figure 1 ) to allow a vacuum to be created through the sander pad 130.
  • the sander pad 130 includes a plurality of datum notches 142 having open sides 143 formed in a perimeter or outer diameter 144 of the sander pad 130.
  • the notches 142 are open along the outer diameter 144.
  • the notches 142 are V-shaped; however the notches 142 may have other shapes, sizes, and positions in alternative embodiments.
  • the notches 142 have a seat 145 opposite the open side 143 thereof with side walls 147 extending between the seat 145 and the open side 143.
  • the side walls 147 may be non-parallel with respect to each other.
  • the notches 142 are used to align the sander pad 130 with the sanding discs 104 (shown in Figure 1 ) at the application station 124 (shown in Figure 1 ), as described in further detail below.
  • the sander pad 130 includes at least two notches 142.
  • the notches 142 may be positioned equally around the outer diameter 144.
  • the use of equally spaced notches 142 allows a user to more easily index the sander pad 130 with the sanding discs 104 at the application station 124.
  • the sander pad 130 may be permitted to stop in any position after the removal of the rotary force.
  • the use of multiple notches 142 would allow alignment of the sander pad 130 at any pad position. In some embodiments, it may be desirable to just use a single notch or a specified number of notches instead.
  • the sander pad 130 includes an attachment surface 146 at a bottom 148 of the sander pad 130.
  • the attachment surface 146 is used to attach the sanding disc 104 to the sander pad 130.
  • the attachment surface 146 may include a hook structure or a loop structure for hook-and-loop attachment of the sanding disc 104 to the sander pad 130.
  • Other types of attachment devices may be used in alternative embodiments.
  • the hand sander storage station 120 includes a holder 150 used to hold the hand sander 102.
  • the holder 150 includes a lip 152 that engages and supports the sander pad 130 and/or the sanding device 132.
  • the lip 152 may be semi-circular in shape to allow the hand sander 102 to be placed in the holder 150 from above the holder 150.
  • the hand sander 102 may hang from the holder 150.
  • the lip 152 may stop the hand sander 102 from tipping to one side or the other.
  • the lip 152 may extend behind the sander pad 130.
  • the holder 150 may define a shelf for the hand sander 102 to rest on when not in use with one or more tabs 156 extending from the holder 150 behind the sander pad 130.
  • the tabs 156 hold the hand sander 102 in the holder 150.
  • the hand sander 102 may be removed by moving the hand sander 102 toward that rear 116 of the table 106 until the hand sander 102 is removed from the holder 150.
  • the holder 150 prevents the hand sander 102 from rolling over and activating a hand sander throttle lever 154 on a top of the sanding device 132. If the hand sander 102 would roll over and the sanding devices 132 turn on, it would be necessary for the operator to grab the hand sander 102 while running and risking injury from the sanding disc 104.
  • the shape of the holder 150 corresponds in shape and size to the shape and size of the sander pad 130. However, in other embodiments, such a correspondence may be unnecessary.
  • the size and shape of the holder 150 may be adjustable to accommodate different sized and shaped hand sanders 102.
  • the holder 150 may be removable from the table 106, such as by removable fasteners.
  • the sanding disc storage station 122 is provided at another location on the table 106.
  • the sanding disc storage station 122 includes a central spindle 160 extending from the top 108 of the table 106.
  • the central spindle 160 passes through a central hole 162 in each of the sanding discs 104 stored in the sanding disc storing station 122.
  • the central spindle 160 is an elongated post long enough to hold multiple stacks 128 of sanding discs 104.
  • Figure 7 is a bottom view of one of the sanding discs 104 formed in accordance with an exemplary embodiment.
  • Figure 7 illustrates an attaching side 170 of the sanding disc 104.
  • the attaching side 170 is configured to be attached to the sander pad 130 (shown in Figure 6 ).
  • the attaching side 170 may include a hook structure or a loop structure for hook-and-loop attachment to the sander pad 130.
  • Other types of attaching structures may be used in alternative embodiments to attach the sanding disc 104 to the sander pad 130.
  • the sanding disc 104 includes an abrasive side (not shown) opposite the attaching side 170. The abrasive side is used for the sanding operation.
  • the sanding disc 104 includes a plurality of holes.
  • the holes may serve different functions.
  • the sanding disc 104 is circular and the central hole 162 is located at a center of the circular sanding disc 104.
  • the sanding disc 104 may have other shapes in alternative embodiments.
  • the sanding disc 104 includes a plurality of vacuum holes 172.
  • the vacuum holes 172 are configured to be aligned with the vacuum holes 140 (shown in Figure 6 ) in the sander pad 130.
  • the vacuum from the vacuum system passes through the vacuum holes 172.
  • the precise shape, size, and configuration of the vacuum holes 172 are not critical to the present disclosure.
  • the sanding disc 104 may have a different number, size, and shape of vacuum holes 172 that correspond to the vacuum holes 140 in the sander pad 130.
  • the sanding disc 104 includes a plurality of datum holes 174 in spaced relation to one another.
  • the datum holes 174 are used to locate the sanding disc 104 in the application station 124 (shown in Figure 1 ) and are used to locate the sanding disc 104 relative to the sander pad 130.
  • the datum holes 174 are positioned near an outer edge 176 of the sanding disc 104.
  • the datum holes 174 are closed such that a portion of the sanding disc 104 is positioned between the datum holes 174 and the outer edge 176.
  • the datum holes 174 have a spacing that corresponds to a spacing of the notches 142 (shown in Figure 6 ) of the sander pad 130.
  • the datum holes 174 may have a shape and size that is similar or equal to the shape and size of the vacuum holes 172.
  • the datum holes 174 may be sized and/or shaped differently than the vacuum holes 172.
  • the datum holes 174 may be positioned a distance 178 from the central hole 162. The distance 178 may be greater than the distance of any of the vacuum holes 172 to the central hole 162. As such, the datum holes 174 are positioned further from the central hole 162 than the vacuum holes 172.
  • at least some of the datum holes 174 may define vacuum holes with the vacuum from the vacuum system passing there through.
  • Stack holders 180 are shown in Figure 7 attached to the sanding disc 104.
  • the stack holders 180 pass through the vacuum holes 172 and are used to stack multiple sanding discs 104 together in one of these stacks 128 (Shown in Figure 1 ).
  • only a single stack holder 180 is used for stacking the sanding discs 104, however multiple stack holders 180 may be used.
  • the stack holders 180 are sized and shaped to correspond to the vacuum holes 172 to pass through multiple vacuum holes 172 and orient the sanding discs 104 relative to each other.
  • the stack holder 180 includes a base 182.
  • the stack holder 180 includes legs 184 (shown in Figure 8 ) extending from the base 182.
  • the legs 184 are the portions of the stack holder 180 that extend through the vacuum holes 172.
  • the base 182 may include individual beams meeting at a hub and extending to the legs 184, as in the illustrated embodiment.
  • Other embodiments may include a disc-shaped base with the legs 184 extending therefrom.
  • Figure 8 is a top perspective view of a portion of the fixture 100 showing the sanding disc storage station 122 with a plurality of stacks 128 of sanding discs 104 stored in the sanding disc storage station 122.
  • the central spindle 160 passes through the center holes 162 of each of the sanding discs 104 in the storage station 122.
  • the stack holders 180 are used to hold a plurality of the sanding discs 104 together in each stack 128.
  • the legs 184 of the stack holders 180 pass through the holes 172, which orients the sanding discs 104 relative to each other such that the holes 172 of each sanding disc 104 are aligned.
  • the legs 184 stop relative rotation between the sanding discs 104.
  • the legs 184 extend beyond the outer most sanding disc 104 and protrude any desired distance over the outer most sanding disc 104 to allow a user to easily grasp the stack holder 180.
  • the user may grasp the stack holder 180 and pull the stack 128 off of the central spindle 160.
  • the user may then move the stack 128 to another station, such as the application station 124 (shown in Figure 1 ).
  • the stack holder 180 may be discarded and recycled after the stack 128 is moved to the application station 124.
  • the legs 184 may protrude a sufficient distance to allow the user to grasp the legs 184 even when the user is wearing gloves.
  • the stack holders 180 may fit a plurality of locations on a given sanding disc 104. Because the legs 184 extend beyond the outer most sanding disc 104, when a stack 128 of sanding discs 104 is placed on top of another stack 128 of sanding discs 104, the free ends of the legs 184 of the stack holder 180 in the lower or bottom stack 128 may be allowed to protrude through the next higher or top stack of sanding discs 104 until that top stack 128 of sanding discs 104 is removed, thereby exposing the free ends of the legs 184 of the next lower stack holder 180.
  • the stacks 128 are positioned in the storage station 122 such that the stack holders 180 are offset with respect to each other.
  • the stack holder 180 of the top stack 128 may be positioned slightly clockwise of the stack holder 180 of the bottom stack 128 such that the stack holders 180 do not interfere with each other.
  • adjacent stacks 128 of the sanding discs 104 have the stack holders 180 positioned differently, such as in a spiral manner.
  • the stack holders 180 may be positioned at any location that does not interfere with the stack holder 180 of the lower stacks 128.
  • Figure 8 illustrates three stacks 128 of sanding discs 104 in the storage station 122 on the central spindle 160, however more or less stacks 128 may be provided in the storage station 122.
  • one of the stacks 128 of sanding discs 104 are shown in the sanding disc application station 124.
  • the sanding discs 104 are stored with the attaching side 170 facing upwards and the abrasive side facing downward.
  • the sanding discs 104 are stored in the sanding disc storage station 122 with an abrasive side 186 facing upward.
  • the user may grasp the stack holder 180 and remove the stack 128 of sanding discs 104 from the storage station 122 and may then invert the stack 128 into the application station 124, where the stack holder 180, which is then on top of the stack 128, may be removed and discarded.
  • the stack holder 180 is used to align the holes in the sanding discs 104, such as the datum holes 174, for ease of loading the stacks 128 into the application station 124.
  • the sanding discs 104 are stored in the application station 124 with the attaching side 170 facing upward for attachment to the hand sander 102.
  • the use of stack holders 180 may not be necessary, and the sanding discs 104 can be stored with the attaching side 170 facing upward in the storage station 120 such that the sanding discs 104 may be simply picked up from the storage station 122 and moved to the application station 124 without flipping the sanding discs over.
  • the sanding disc storage station 122 and the application station 124 may be combined into a single station. For example, the storage station 122 may be unnecessary and the sanding discs 104 may be stored at the application station 124.
  • the application station 124 includes a plurality of datum pegs 190 extending from the top 108 of the table 106.
  • the datum pegs 190 hold a stack 128 of the sanding discs 104 with the attaching sides 170 of the sanding discs 104 facing away from the top 108 of the table 106.
  • the datum pegs 190 pass through the datum holes 174 in the sanding discs 104.
  • the sanding discs 104 are placed on the datum pegs 190 the sanding discs 104 are aligned and the vacuum holes 172 are aligned and positioned for attachment to the hand sander 102.
  • the datum pegs 190 maintain alignment of the vacuum holes 172 in the sanding discs 104 included in the stack 128 of sanding discs 104.
  • the fixture 100 includes at least two datum pegs 190.
  • the datum pegs 190 have an outer surface defining a datum surface.
  • the datum pegs 190 extend to tips 194.
  • the tips 194 are exposed beyond the outer most sanding disc 104.
  • the datum pegs 190 hold the positions of the sanding discs 104 relative to the table 106.
  • the datum pegs 190 may be tapered such that the datum pegs 190 are thinner at the tips 194 and ticker at the base of the datum pegs 190. Having the datum pegs 190 tapered makes loading of the sanding discs 104 onto the datum pegs 190 easier.
  • the datum pegs 190 are used to align the hand sander 102 with the outer most sanding disc 104 for easy application of the sanding disc 104 to the sander pad 130.
  • Figure 9 is a top respective view of a portion of the fixture 100 showing the hand sander 102 attached to the outermost sanding disc 104 in the application station 124.
  • Figure 10 illustrates one of the sanding discs 104 being removed with the hand sander 102 from the application station 124.
  • the datum pegs 190 are used to index the sander pad 130 with the sanding disc 104.
  • the sander pad 130 is placed against the datum pegs 190 such that the datum pegs 190 are received in corresponding notches 142 in the sander pad 130.
  • the sander pad 130 is then pressed toward the sanding discs 104 with the datum pegs 190 maintaining alignment of the sander pad 130 with the sanding discs 104.
  • the attachment surface 146 of the sander pad 130 contacts the attaching side 170 of the sanding disc 104 the sanding disc 104 is attached to the sander pad 130 and the sanding disc 104 may be removed from the stack 128 by moving the hand sander 102 away from the table 106.
  • the user may then use the hand sander 102 and sanding disc 104 as desired.
  • the sanding disc 104 may be attached by a hook-and-loop structure on the attaching side 170 and the attachment surface 146.
  • the vacuum system 134 may be used to hold the sanding disc 104 against the sander pad 130.
  • two datum pegs 190 are used to index the position of the sander pad 130 and the sanding disc 104. In other embodiments, a different number of datum pegs 190 may be used. Also, in the embodiment shown, the datum pegs 190 have a circular cross section. In other embodiments, datum pegs of a different shape may be used. A person having ordinary skill in the art may select an appropriate corresponding datum peg and datum notch configuration to achieve the particular desired outcome.
  • the datum pegs 190 are used to support the sanding discs 104.
  • the sanding discs 104 may hang from the datum pegs 190.
  • the datum pegs 190 pass through the sanding discs 104, such as through the datum holes 174.
  • the sander pad 130 includes the open-sided notches 142, and the sander pad 130 may be side-loaded into position against the datum pegs 190 with the datum pegs 190 being pressed against the seats 145 of the notches 142.
  • the sander pad 130 may be brought into position in the application station 124 from the side (e.g., generally parallel to the top 108 of the table 106) as opposed to needing to be loaded from the top downward toward the table 106.
  • the seats 145 may have complementary shapes to the datum pegs 190.
  • the open sided notches 142 make it easier for positioning the hand sander 102 in the application station 124, such as compared to having closed holes in the sander pad 130 that need to be aligned with the datum pegs 190 and loaded in a direction perpendicular to the top 108 of the table 106.
  • the datum notches 142 are disposed equidistant from each adjacent datum notch 142 such that any of the datum notches 142 may received the corresponding datum pegs 190.
  • the vacuum holes 140 are positioned relative to the datum notches 142 such that each of the vacuum holes 140 are configured to be aligned with vacuum holes 172 in the sanding disk 104 irrespective of which datum notches 142 receive the datum pegs 190.
  • the sander pad 130 may be loaded into position against the datum pegs 190 by side-loading in a direction non-parallel to the datum pegs 190, such as in a perpendicular direction or a transverse direction.
  • the datum pegs 190 may be removable from the table 106 and adjustable to different relative positions to accept sanding discs 104 having different configurations of datum holes 174.
  • the datum pegs 190 may be threadably coupled to the table 106 and the table 106 may include multiple threaded bores that the datum pegs 190 may be threaded into.
  • the datum pegs 190 may be moved relative to each other and relative to the table 106.
  • a user may be able to configure the datum pegs 190 in the application station 124 to accommodate a variety of sanding discs and corresponding sanding pads 130.
  • Such a feature may be more desirable in a hobby-type environment, or a single user may use a variety of sanding discs 104 and a variety of sanding pads 130.
  • the datum pegs 190 may be welded or otherwise fixed in place to enhance durability, if desired.
  • the fixture 100 may be used to efficiently remove the sanding disc 104 from the sander pad 130.
  • the sanding disc 104 may be removed at the sanding disc removal station 126.
  • the hand sander 102 may be moved to the application station 124 to attach a new sanding disc 104 to the hand sander 102.
  • Figure 11 illustrates the hand sander 102 in the sanding disc removal station 126.
  • Figure 12 illustrates one of the sanding discs 104 being removed from the hand sander 102.
  • the fixture 100 includes a removal tool 196 extending from the table 106.
  • the removal tool 196 has a hook 198 at an end of the removal tool 196.
  • the notches 142 in the sander pad 130 expose a portion of the sanding disc 104, which may be engaged by the removal tool 196 to remove the sanding disc 104 from the hand sander 102.
  • the datum holes 174 and corresponding portions of the sanding disc 104 surrounding the datum holes 174 are exposed below the notches 142.
  • the sanding disc 104 may be larger than the bottom 148 of the sander pad 130 to provide a surface for gripping and removing the sanding disc 104 from the hand sander 102.
  • the hook 198 is placed adjacent any desired notch 142 and through a corresponding datum hole 174 in the sanding disc 104.
  • the hand sander 102 is moved upwardly.
  • the hook 198 removes the sanding disc 104 from the sander pad 130 without contact by a user's hands. Pulling upward on the hand sander 102 separates the sanding disc 104 from the sander pad 130.
  • the fixture 100 may include a disposal station 200 adjacent the removal station 126.
  • the disposal station 200 catches the spent sanding discs 104 to be later discarded.
  • the disposal station 200 may include a trash receptacle or other device used to discard the used sanding discs 104.
  • the user may then align the notches 142 with the datum pegs 190 (shown in Figure 1 ) to install a new sanding disc 104 and resume sanding.
  • the notches 142 on the sander pad 130 and the corresponding datum holes 174 on the sanding disc 104 may serve the purposes of improving the attachment of the sanding disc 104 to the sander pad 130, removal of the sanding disc 104 from the sander pad 130, and/or aligning the sanding disc to the sander pad 130 for full flow of the vacuum through the sanding disc 104 and the sander pad 130, while minimizing the time spent by the user in achieving these tasks and minimizing the risk of injury to the user.

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

Claims (14)

  1. Handschleifmaschine (102) und Schleifscheibenhalterung zum Anbringen einer Schleifscheibe an einer Handschleifmaschine (102), umfassend:
    einen Tisch (106) mit einer Oberseite (108);
    eine Schleifmaschinenaufbewahrstation (120) auf dem Tisch (106), wobei die Schleifmaschinenaufbewahrstation (120) einen Halter (150) zum Halten einer Handschleifmaschine (102) mit einem Schleifteller (130) auf der Oberseite (108) des Tisches (106) aufweist, und
    eine Anwendungsstation (124) auf dem Tisch (106), wobei die Anwendungsstation (124) wenigstens zwei Ausrichtzapfen (190) aufweist, die sich von der Oberseite (108) des Tisches (106) weg erstrecken, wobei die Ausrichtzapfen (190) einen Stapel (128) von Schleifscheiben (104) halten, deren Befestigungsseiten von der Oberseite (108) des Tisches (106) abgewandt sind, und die Ausrichtzapfen (190) durch Ausrichtlöcher (174) in den Schleifscheiben (104) laufen,
    dadurch gekennzeichnet, dass
    die wenigstens zwei Ausrichtzapfen (190) Ausrichtflächen aufweisen, die dazu eingerichtet sind, in Ausrichtnuten (142) in einem Außendurchmesser des Schleiftellers (130) aufgenommen zu werden, wobei die Ausrichtzapfen (190) den Schleifteller (130) zur Schleifscheibe (104) ausrichten, wenn der Schleifteller (130) gegen die Befestigungsseite der äußersten Schleifscheibe (104) gedrückt wird.
  2. Halterung nach Anspruch 1, wobei die Ausrichtflächen dazu eingerichtet sind, seitlich in die Ausrichtnuten (142) im Außendurchmesser des Schleiftellers (130) geladen zu werden.
  3. Halterung nach Anspruch 1, wobei die Schleifscheiben (104) Ansauglöcher (140) aufweisen, die durch die Ausrichtzapfen (190) zu Ansauglöchern (140) in dem Schleifteller (130) ausgerichtet sind.
  4. Halterung nach Anspruch 1, wobei die Ausrichtzapfen (190) die Ausrichtung der Ansauglöcher (140) in den Schleifscheiben (104), die in dem Stapel (128) von Schleifscheiben (104) enthalten sind, beibehalten.
  5. Halterung nach Anspruch 1, wobei der Halter (150) eine Lippe aufweist, welche den Schleifteller (130) gegen die Oberseite (108) des Tisches (106) hält.
  6. Halterung nach Anspruch 1, wobei der Tisch (106) Bügel zum Einstellen eines Winkels des Tisches (106) aufweist.
  7. Halterung nach Anspruch 1, wobei der Halter (150) halbkreisförmig ausgebildet ist und die Handschleifmaschine (102) im halbkreisförmigen Halter hängt.
  8. Halterung nach Anspruch 1, wobei der Halter (150) so verstellbar ist, dass er Handschleifmaschinen (102) mit unterschiedlichen Formen aufnehmen kann.
  9. Halterung nach Anspruch 1, wobei die Ausrichtzapfen (190) vom Tisch (106) abnehmbar und auf verschiedene Relativpositionen verstellbar sind, um Schleifscheiben (104) mit unterschiedlichen Konfigurationen von Ansauglöchern (140) aufzunehmen.
  10. Halterung nach Anspruch 1, ferner umfassend eine Schleifscheiben (104)-Aufbewahrstation (122) auf dem Tisch (106), die dazu eingerichtet ist, wenigstens einen Stapel (128) von Schleifscheiben (104) mit zueinander ausgerichteten Ansauglöchern (140) aufzunehmen.
  11. Halterung nach Anspruch 10, wobei die Schleifscheiben (104)-Aufbewahrstation (122) eine mittige Spindel (160) aufweist, die sich von der Oberseite (108) des Tisches (106) weg erstreckt, wobei die mittige Spindel (160) den wenigstens einen Stapel (128) von Schleifscheiben (104) hält und dabei durch ein mittiges Loch (162) jeder Schleifscheibe (104) in einem solchen Stapel (128) läuft.
  12. Halterung nach Anspruch 10, wobei die Schleifscheiben (104)-Aufbewahrstation (122) an die Anwendungsstation (124) angrenzt, und wobei Schleifscheiben (104) aus dem Stapel (128) von Schleifscheiben (104) an der Schleifscheibenaufbewahrstation (122) aus der Schleifscheiben (104)-Aufbewahrstation (122) entnommen und zur Anwendungsstation (124) bewegt werden.
  13. Verfahren zum Anbringen einer Schleifscheibe an einer Handschleifmaschine (102), umfassend die Schritte:
    Bereitstellen einer Schleifscheiben (104)-Anwendungsstation (124) mit wenigstens zwei Ausrichtzapfen (190), die sich von einer Oberseite (108) eines Tisches (106) weg erstrecken;
    Positionieren einer Schleifscheibe (104) an der Anwendungsstation (124) so, dass die wenigstens zwei Ausrichtzapfen (190) durch Ausrichtlöcher (174) in der Schleifscheibe (104) laufen, wobei die Schleifscheibe (104) so positioniert wird, dass eine Befestigungsseite der Schleifscheiben (104) von der Oberseite (108) des Tisches (106) abgewandt ist;
    gekennzeichnet durch die Schritte:
    Ausrichten einer Handschleifmaschine (102) zur Anwendungsstation (124) durch Drücken der Handschleifmaschine (102) gegen die wenigstens zwei Ausrichtzapfen (190), so dass Ausrichtnuten (142) in einem Außendurchmesser eines Schleiftellers (130) der Handschleifmaschine (102) die wenigstens zwei Ausrichtzapfen aufnehmen, und
    Verschieben der Handschleifmaschine (102) in einer Befestigungsrichtung zur Oberseite (108) des Tisches (106) hin entlang der wenigstens zwei Ausrichtzapfen (190), bis die Schleifscheibenauflage (130) gegen die Befestigungsseite der Schleifscheibe (104) gedrückt wird und die Schleifscheibe (104) an der Schleifscheibenauflage (130) befestigt ist.
  14. Verfahren nach Anspruch 13, wobei die Ausrichtung einer Handschleifmaschine (102) das seitliche Laden der Handschleifmaschine (102) in die Anwendungsstation (124) in einer zu den Ausrichtzapfen nicht parallelen Richtung umfasst.
EP14177094.1A 2014-07-15 2014-07-15 Verfahren und Vorrichtung zum Befestigen einer Schleifscheibe an einer Handschleifmaschine Active EP2974828B1 (de)

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EP14177094.1A EP2974828B1 (de) 2014-07-15 2014-07-15 Verfahren und Vorrichtung zum Befestigen einer Schleifscheibe an einer Handschleifmaschine
ES14177094.1T ES2630104T3 (es) 2014-07-15 2014-07-15 Método y accesorio para montar un disco de esmerilado a un esmerilador manual
PCT/EP2015/065978 WO2016008850A1 (en) 2014-07-15 2015-07-13 Method and fixture for attaching a sanding disc to a hand sander

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