US20080248733A1 - Holding Fixture For a Grinding Tool, Grinding Tool and Supporting Body For a Grinding Tool - Google Patents

Holding Fixture For a Grinding Tool, Grinding Tool and Supporting Body For a Grinding Tool Download PDF

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Publication number
US20080248733A1
US20080248733A1 US12/090,308 US9030806A US2008248733A1 US 20080248733 A1 US20080248733 A1 US 20080248733A1 US 9030806 A US9030806 A US 9030806A US 2008248733 A1 US2008248733 A1 US 2008248733A1
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United States
Prior art keywords
clamping disk
supporting body
holding fixture
face
grinding tool
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.)
Abandoned
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US12/090,308
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English (en)
Inventor
Patrick Mueller
Gerd Braasch
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Sia Abrasives Industries AG
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Sia Abrasives Industries AG
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Filing date
Publication date
Application filed by Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Assigned to ABRASIVES INDUSTRIES AG reassignment ABRASIVES INDUSTRIES AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRAASCH, GERD, MULLER, PATRICK
Assigned to SIA ABRASIVES INDUSTRIES AG reassignment SIA ABRASIVES INDUSTRIES AG CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 020842 FRAME 0052. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE IS SIA ABRASIVES INDUSTRIES AG. Assignors: BRAASCH, GERD, MULLER, PATRICK
Publication of US20080248733A1 publication Critical patent/US20080248733A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the invention relates to a holding fixture for a grinding tool, to a grinding tool and to a supporting body for a grinding tool of said type, having the features of the preamble of the independent patent claims.
  • Rotating machine grinding tools are nowadays known and used in a multiplicity of different embodiments. Different shapes or types of grinding or polishing tools are used depending on the application. It is therefore desired, primarily in applications in which frequent tool changes are necessary, to provide the simplest possible means by which a grinding tool can be connected to a machine and removed again from the latter.
  • a grinding tool and a holding fixture are presented for example in EP 1 050 377 A2 or in EP 1 174 219 A2. Said tools and holding fixture permit simple connection of the tool to a rotating machine part.
  • the fastening of the grinding tool in the holding fixture requires the tightening of a clamping screw.
  • the holding fixture according to the invention for a grinding tool is substantially composed of a first and a second clamping disk.
  • the first clamping disk is arranged so as to be rotatable about an axis relative to the second clamping disk.
  • the first clamping disk can be turned toward a machine to which the holding fixture is or should be fastened.
  • the second clamping disk can be turned toward the workpiece to be machined.
  • the first clamping disk has a first bearing face for a first contact face of a supporting body of the grinding tool.
  • the second clamping disk has a second bearing face for a second contact face of the supporting body of the grinding tool.
  • the first and second bearing faces of the holding fixture run at an angle with respect to one another.
  • the supporting body can be firmly clamped between the bearing faces.
  • the inclined bearing faces delimit a wedge-shaped intermediate space.
  • the supporting body is wedged. It is possible to obtain various advantages in this way. In particular, it is possible to generate a clamping action by means of a simple rotation of the clamping disks relative to one another. The tightening of screws as in the prior art is not necessary.
  • the second clamping disk is provided, at its periphery, with at least one groove.
  • the at least one groove serves for holding a holding element of the conventionally annular supporting body. Through the groove, the holding element of the supporting body can be placed into an intermediate space which are defined by the first and the second bearing face of the first and second clamping disks.
  • a groove of said type permits particularly simple insertion of the grinding tool.
  • the first clamping disk is also provided with a groove. Said groove can be aligned with the groove of the second clamping disk.
  • the groove of the first clamping disk extends at least as far as the first bearing face of the first clamping disk.
  • a groove of said type on the first clamping disk permits particularly simple rotation of the clamping disks relative to one another once a projection on the supporting body comes into engagement with the groove on the first clamping disk.
  • the groove of the first clamping disk has, typically in the circumferential direction, an engagement face.
  • the first clamping disk can be co-rotated by rotating the supporting body or by rotating the grinding means which is connected to the supporting body. Tools for clamping are therefore not strictly necessary.
  • the rotation takes place here counter to the rotational direction of the machine. The operation of the machine further intensifies the wedging action.
  • a plurality of, preferably four, grooves are arranged so as to be distributed uniformly over the periphery of the holding fixture.
  • the number of grooves defines the number of possible projections or cams on a supporting body for fastening.
  • a plurality of grooves reduces deformations of the supporting body and therefore leads to better fastening and to better grinding results.
  • a further problem in the devices known for example from EP 1 050 377 A2 is their fastening to a machine drive.
  • Said known holding fixtures are provided with clamping journals which firstly serve for holding the two clamping disks together and which are secondly provided for fastening to a machine drive.
  • the grinding tool projects relatively far below protective covers which are provided on the machine if necessary.
  • the holding fixture is designed such that one of the clamping disks, in particular the second clamping disk, is provided with a threaded bore, by means of which said second clamping disk can be connected to a machine drive.
  • the second clamping disk can be provided with a journal in which a threaded bore is provided and which extends through the second clamping disk.
  • the first clamping disk can be provided with an opening through which the journal can extend. In this way, it is on the one hand possible for the length of the fastening to a machine to be shortened. At the same time, it is also possible in this way for the two clamping disks to be connected to one another in a particularly simple manner.
  • a screw connection is not necessary because, on account of the inclined bearing faces, the required clamping action can be obtained by means of simple rotation of the two clamping disks in the circumferential direction without an axial feed movement between the clamping disks. While such a connection of the holding fixture is particularly preferable in connection with the above-described arrangement of the contact faces, such a fastening of the holding fixture can also advantageously be used with non-wedge-shaped faces for fastening the supporting body.
  • one of the clamping disks typically the second clamping disk, to also be provided with form-fitting elements which can be placed in engagement with a tool. If necessary, it is possible, with a tool, for the holding fixture to be sufficiently firmly screwed to a grinding machine by means of a tool.
  • the holding fixture can be provided with means for radially holding at least parts of the supporting body.
  • the first clamping disk can be provided with a radially acting retaining face. Said radially acting retaining face can be placed in contact with the supporting body, in particular with a cylindrical ring of the supporting body. In this way, the supporting body is supported in the radial direction by means of the retaining face. A deformation or destruction of the supporting body in operation on account of centrifugal forces is thereby prevented.
  • the second clamping disk with means for radially retaining the supporting body.
  • the grinding tool according to the invention is suitable in particular for being held in a holding fixture as described above. Reference is made here and below to a grinding tool. It is self-evident that the invention can be used equally for any type of rotating machining tool such as polishing tools, grinding tools or the like. The shape and type of grinding or polishing material is also not of particular significance within the context of the present invention.
  • the grinding tool according to the invention has a supporting body and a grinding means fastened to the supporting body.
  • the supporting body has a holding element.
  • the supporting body can be fastened in a holding fixture by means of the holding element.
  • the holding element has a first contact face and a second contact face. By means of said contact faces, the supporting body can be firmly clamped between a first bearing face and a second bearing face of the holding fixture.
  • the first and the second contact face run at an angle with respect to one another.
  • the holding elements are formed from at least one cam which projects radially inward from a lateral surface of the supporting body, typically from a plurality of cams.
  • the cams are preferably arranged asymmetrically on the supporting body as viewed in the axial direction. The arrangement is carried out such that the grinding tool can be fastened to the holding fixture only in a predetermined way, that is to say only with the grinding face aligned toward the workpiece to be machined. On account of said asymmetrical arrangement, it is ensured that a grinding tool cannot be fastened incorrectly.
  • the cams advantageously have, in the axial direction, a dimension which is such that, with correct positioning of the grinding tool, the cams can be placed in engagement with a groove of a first clamping disk which faces toward a machine, and such that, in the event of incorrect positioning of the grinding tool, the cams on the supporting body cannot be placed in engagement with said groove.
  • the engagement in the event of correct positioning, it is possible by rotating the grinding tool for the first clamping disk to be co-rotated relative to the second clamping disk. Because the second clamping disk is firmly held (in particular by firmly holding the machine drive), it is possible by rotating the grinding tool for the supporting body of the grinding tool to be firmly clamped in a holding fixture as described above in a particularly simple manner.
  • the supporting body is particularly preferably provided with four radially inwardly aligned cams.
  • the cams are preferably arranged such that the first contact face is formed by the upper side of a ring.
  • the second contact face is formed by the underside of the cam, which runs at an angle with respect to the upper side.
  • first and second contact face on the holding element of the supporting body prefferably be designed such that the supporting body can, by being rotated in the circumferential direction while firmly holding the holding fixture, be placed into a clamping position. In this way, no additional tools such as screws are necessary for fastening the tool.
  • the cam of the holding element is also designed so as to taper as viewed in the axial direction.
  • the width of the cam as viewed in the circumferential direction is smaller than on that side of the cam which faces away from the holding fixture, that is to say that side of the cam which has the second contact face.
  • the dimensions are preferably selected such that the narrower side of the cam has a smaller width, and that the wider side of the cam has greater width, than the width of the groove in the holding fixture. In this way, punctiform contact is obtained between the side faces of the cam and the lateral delimiting faces of the groove. The grinding tool is thereby stabilized in the holding fixture even more effectively.
  • a plurality of, for example four, cams are arranged uniformly over the periphery, it is possible in this way, in the fastened position, to prevent play between the holding fixture and the grinding tool relative to the axis of the arrangement.
  • a further aspect of the invention relates to a supporting body for a grinding tool.
  • the supporting body has at least one holding element, by means of which it can be fastened in a holding fixture.
  • the holding element has a first and a second contact face. By means of said contact faces, the supporting body can be firmly clamped between a first and a second bearing face of a holding fixture.
  • the contact faces of the holding element run at an angle with respect to one another.
  • FIG. 1 a is an illustration of a detail of grooves and cams of a holding fixture according to the invention and of a supporting body according to the invention in an insertion position
  • FIG. 1 b is an illustration of a detail of grooves and cams of a holding fixture according to the invention and of a supporting body according to the invention in a clamping position
  • FIG. 2 shows a plan view of a grinding tool according to the invention
  • FIG. 3 shows a side view of a supporting body in section through a plane through a rotational axis
  • FIG. 4 a shows a side view of a second clamping disk
  • FIG. 4 b shows a plan view of the clamping disk from FIG. 4 a
  • FIG. 4 c shows a view of the clamping disk as per FIG. 4 a from below
  • FIG. 5 a shows a side view of a first clamping disk
  • FIG. 5 b shows a plan view of the clamping disk as per FIG. 5 a
  • FIG. 5 c shows a view of the clamping disk as per FIG. 5 a from below
  • FIG. 6 shows a side view of a supporting body and of a holding fixture for holding the supporting body
  • FIG. 7 a to 7 b are various illustrations of a first clamping disk of an alternative exemplary embodiment of the invention.
  • FIG. 8 is a schematic illustration of a further preferred exemplary embodiment of the invention in a side view.
  • FIG. 1 a shows, in an enlarged illustration, a detail of a holding fixture 1 for holding a grinding tool.
  • a cam 34 with a first contact face 32 and a second contact face 33 are shown only schematically by means of dashed lines.
  • An angle g is formed between the first contact face 32 and the second contact face 33 .
  • the angle ⁇ is typically approximately 10°.
  • the holding fixture 1 is substantially composed of a first clamping disk 10 and a second clamping disk 20 , of which in each case only a detail is shown.
  • the first clamping disk 10 is provided at its periphery (see also FIG. 5 a , 5 b and 5 c ) with an encircling first bearing face 11 .
  • the first bearing face 11 is interrupted by a groove 12 .
  • the second clamping disk 20 is provided with a second bearing face 21 . The latter is arranged at an angle a( relative to the first contact face.
  • An intermediate space 2 formed between the first bearing face 11 and the second bearing face 21 for holding the cam 34 can be accessed by the cam 34 through a groove 22 on the periphery of the second clamping disk 20 .
  • FIG. 1 a shows the cam 34 in an insertion position E.
  • the groove 12 is aligned with the groove 22 in the axial direction A such that the cam 34 can be inserted from below.
  • the cam 34 is of course not to be considered in isolation but rather as being fastened to a supporting body. The construction of the supporting body is shown in more detail below on the basis of FIGS. 2 and 3 .
  • the first clamping disk 10 is rotated in the circumferential direction U relative to the second clamping disk 20 .
  • the cam 34 engages with a peripheral contact face 38 on an engagement face 13 on the first clamping disk 10 . If the second clamping disk 20 is held firm and a grinding tool which has the cam 34 is rotated in the circumferential direction U, the first clamping plate 10 rotates together with the cam 34 into the clamping position K shown in FIG. 1 b .
  • the cam 34 In order that engagement between the peripheral contact face 38 and the engagement face 13 is possible, the cam 34 must be designed to be sufficiently long in the axial direction A.
  • the height h of the cam 34 in the region of the peripheral contact face 38 must therefore be at least large enough that, when the grinding tool is correctly inserted, the cam 34 extends into the groove 12 of the first clamping disk. If the cam 34 is fastened asymmetrically to the supporting body as viewed in the axial direction (in this regard, see also FIGS. 2 and 3 ), then with suitable selection of the height h of the cam 34 , engagement can occur only when the grinding tool is correctly positioned. In this way, it is prevented that the grinding tool is mounted with the grinding face aligned toward the grinding machine.
  • the supporting body In the clamping position K as per FIG. 1 b , the supporting body is clamped with its contact faces 32 , 33 between the bearing faces 21 , 11 of the second clamping disk 20 and of the first clamping disk 10 .
  • a lower face of the cam 34 is the second contact face 33 .
  • An upper contact face 32 of the only partially illustrated ring of a supporting body forms the first contact face, which is in contact with the first bearing face 11 of the first clamping disk 10 .
  • FIG. 2 shows a plan view of a grinding tool 30 .
  • the grinding tool 30 is substantially composed of a supporting body 31 and of a grinding means 35 (illustrated only schematically) which is fastened to the supporting body 31 .
  • the supporting body 31 is substantially composed of a cylindrical ring 3 to which a flange 37 is fastened.
  • Provided on the inner side of the cylindrical ring 36 are four radially inwardly projecting cams 34 which are arranged uniformly over the periphery of the ring 36 at intervals of 90°.
  • the upper side of the ring forms a first contact face 32 which can be placed in contact with the first bearing face 11 of the first clamping disk 10 .
  • FIG. 3 shows a section through a central axis of the supporting body 31 . It can be seen from FIG. 3 that the second contact face 33 on the underside of the cam 34 runs at an angle ⁇ with respect to the first contact face 32 formed by the upper edge of the ring 36 .
  • the cam 34 is of geometrically simple construction and has a substantially trapezoidal shape as viewed from above.
  • Two side faces which run in the axial direction delimit the cam 34 at the sides.
  • the cam 34 is delimited at one side by a first stop face 32 which runs flush with the upper side of the ring 36 and at the other side by a second stop face 33 which runs at an angle g with respect to the upper side of the ring 36 .
  • the stop faces run in each case in a plane, so that by means of a rotation in the circumferential direction, the supporting body can be inserted into the holding fixture.
  • the cam 34 is arranged asymmetrically with respect to the ring 36 in the axial direction A.
  • the cam 34 is, on the upper side in FIG. 3 , flush with the first contact face 32 .
  • the second contact face 33 is however arranged with a spacing to the lower end of the supporting body 31 in FIG. 3 .
  • the positioning of the supporting body in the holding fixture according to the invention is precisely defined on account of said arrangement and also on account of the inclined arrangement of the second contact face 33 . Fastening with the flange 37 aligned toward the grinding machine is not possible.
  • the angle ⁇ is selected as a function of a corresponding angle ⁇ on the holding fixture such that the desired clamping action can be obtained by means of a rotation.
  • the angle ⁇ is typically approximately 10°. Certain deviations are however also conceivable.
  • the holding fixture 1 formed from a first clamping disk 10 and a second clamping disk 20 is described in more detail in FIGS. 4 a to 4 c , 5 a to 5 c and 6 .
  • FIG. 4 a shows a side view of the second clamping disk 20 .
  • the second clamping disk 20 is embodied substantially as a disk which is integrally provided on its upper side with a journal 27 .
  • the journal 27 is provided with a bore 28 with a thread 23 which extends downward through the clamping disk 20 .
  • the clamping disk 20 is provided with grooves 22 and also with a second bearing face 21 which runs at an angle a with respect to the first bearing face of a first clamping disk (see FIGS. 5 a to 5 c ).
  • four second bearing faces 21 and four grooves 22 are arranged so as to be distributed uniformly over the periphery of the second clamping disk 20 .
  • a circular-segment-shaped depression 25 is provided on the surface of the clamping disk, the function of which will be explained in more detail below.
  • the internal thread 23 serves for connecting the holding fixture to a shaft of a grinding machine.
  • An encircling depression 26 is also arranged on the outer side of the journal 27 .
  • a clamping ring for connecting the second clamping disk 20 to a first clamping disk can be arranged in the depression 26 .
  • FIG. 4 c shows a view of the second clamping disk 20 from below.
  • the bore 28 extends, as can be seen from FIG. 4 c , through the entire body of the second clamping disk 20 .
  • Depressions 24 are additionally provided on the underside of the second clamping disk 20 , which depressions 24 form form-fitting elements for a tool.
  • a rotary key typically a key as is known for angle grinders, it is possible to generate an engagement with said depressions 24 . In this way, it is possible for the holding fixture 1 with a tool to be firmly screwed to a shaft of a grinding machine.
  • FIG. 5 a shows, in a side view, a first clamping disk 10 which, together with the second clamping disk 20 shown in FIGS. 4 a to 4 c , forms a holding fixture 1 for a tool.
  • the first clamping disk 10 is designed substantially as a disk.
  • a first bearing face 11 is formed along the periphery thereof in the manner of a shoulder.
  • Arranged over the periphery are four grooves 12 .
  • the first clamping disk 10 is additionally provided with a central opening 14 which serves for holding the journal 27 of the second clamping disk 20 .
  • the clamping disk 10 is also provided with a pin 15 .
  • the pin 15 runs, when the holding fixture 1 is assembled, in the circular-ring-shaped depression 25 of the second clamping disk 20 . In this way, the possible rotational movement between the first clamping disk 10 and the second clamping disk 20 is limited to a predetermined angular range.
  • the pin 15 is in particular arranged in relation to the position of the depression 25 such that, in the one extreme angular position, the grooves 12 of the first clamping disk 10 and the groove 22 of the second clamping disk 20 are aligned with one another axially, that is to say the holding fixture 1 is in the insertion position E. In the other axial extreme position, the holding fixture 1 is in the clamping position K shown in FIG. 1 b.
  • FIG. 5 b shows a plan view of the first clamping disk 10 shown in FIG. 5 a .
  • the grooves 12 are arranged uniformly over the periphery of the first clamping disk 10 .
  • the grooves 12 are slightly deeper in the radial direction than the radial width of the first bearing face 11 .
  • FIG. 5 c shows a view of the first clamping disk 10 from below.
  • the holding fixture 1 composed of the first clamping disk 10 and the second clamping disk 20 is shown in assembled form in FIG. 6 .
  • the same reference symbols denote identical parts to those in the preceding figures.
  • the journal 27 of the second clamping disk 20 is guided through the opening 14 of the first clamping disk 10 .
  • the first clamping disk 10 and the second clamping disk 20 are held together axially by means of a clamping ring 3 which is arranged in the annularly running depression 26 on the journal 27 .
  • a clamping ring 3 which is arranged in the annularly running depression 26 on the journal 27 .
  • a plate spring (not illustrated) can also create a preload between the first and the second clamping disks. It is also possible for a nut to be provided on an external thread of the shaft instead of a clamping ring 3 .
  • FIG. 6 also schematically shows the supporting body 31 in a side view.
  • the ring 36 By means of a movement in the axial direction A, it is possible for the ring 36 to be pushed with its inner lateral surface over the outer lateral surface of the second clamping disk 20 .
  • the grooves 22 in the second clamping disk and the grooves 12 in the second clamping disk 10 allow the radially inwardly projecting cams 34 to be held on the ring 26 .
  • Dimensions of the inner lateral surface of the ring 36 and of the outer lateral surface of the second clamping disk 20 and also the radial dimensions and dimensions in the circumferential direction of the grooves and cams are coordinated with one another here.
  • the supporting body 31 is pushed onto the holding fixture 1 in the axial direction A until the first contact face 32 bears against the first bearing face 11 .
  • contact is at the same time generated between a peripheral contact face 38 of the cam 34 and the engagement face 13 of the groove 12 of the first clamping disk 10 .
  • the first and second clamping disks 10 , 20 are typically produced from a metallic material such as for example aluminum.
  • the supporting body 31 is typically a plastic injection molded part.
  • the dimensions of the holding fixture and of the supporting body are dependent on the respective application.
  • a holding fixture with a diameter of approximately 50 mm with four cams with a length in the circumferential direction of approximately 10 mm and a depth in the radial direction of approximately 3 mm has typically been well proven.
  • the first and the second clamping disks 10 , 20 are preferably composed here of plates which are 4 to 5 mm thick.
  • a journal 27 with an outer diameter of 20 mm and with an M14 internal thread is typically used.
  • the supporting body 31 typically has a ring 36 with a wall thickness of 1 mm.
  • the cams 34 typically have a thickness of 2 mm in the radial direction and a height of 5 mm in the axial direction.
  • the clear inner diameter of the ring 36 of the supporting body 31 is adapted to the outer diameter of the holding fixture 1 and is typically 45 to 50 mm.
  • FIG. 7 a shows an alternative exemplary embodiment of a first clamping disk 40 in cross section.
  • the embodiment as per FIG. 7 a is an alternative to the first clamping disk as per FIG. 5 a .
  • the first clamping disk 40 as per FIG. 7 a has a central opening 44 , a peripheral encircling stop face 41 , and four grooves 42 which are arranged over the periphery of the first disk 40 (see also FIG. 7 c ).
  • a bore 45 serves for holding a pin.
  • the first clamping disk 40 as per FIG. 7 a is provided with an encircling collar 46 .
  • a detail X with the collar 46 is illustrated in an enlarged illustration in FIG. 7 b .
  • the collar 46 has a beveled retaining face 47 .
  • the retaining face 47 defines an approximately conical holding fixture.
  • a ring 36 (illustrated by dashed lines) of a supporting body is retained in the radial direction r. Forces which act in the radial direction r on the supporting body are absorbed by the retaining face 47 .
  • conical rings instead of a cylindrical ring 36 of a supporting body.
  • FIG. 7 c shows a plan view of the clamping disk 40 as per FIG. 7 a .
  • Four grooves 42 are arranged over the periphery so as to be spaced apart from one another by 90°, which grooves 42 serve for holding cams of a support disk of a grinding tool in the above-described way.
  • the retaining collar 46 is of encircling design with the exception of the grooves 42 . It is however also conceivable to provide only individual circle sections with retaining means.
  • FIG. 8 shows, in a side view, an arrangement with a cam 34 as per a further preferred exemplary embodiment.
  • a grinding tool 30 is shown only with its cam 34 of the supporting body.
  • the grinding tool is inserted with a collar 46 into the holding fixture 1 shown in FIGS. 7 a and 7 b .
  • Some other holding fixture such as is shown for example in the preceding figures, could of course also be used.
  • the cam 34 is designed to taper in the axial direction A.
  • the width D 1 of the cam 34 in the circumferential direction U on that side 39 which can be turned toward the holding fixture 1 is smaller than the width d 2 , as viewed in the circumferential direction U, on that side of the cam 34 which forms the stop face 33 .
  • the width d 1 is smaller than the width D of the groove 12 in the holding fixture 1 .
  • the width d 2 is greater than the width D of the groove 12 as viewed in the circumferential direction U.
  • the cam 34 as per FIG. 8 is provided with roundings 48 between the side faces 49 and the face 39 . It would however also be conceivable to provide a cam with a trapezoidal shape, that is to say with lateral faces 49 and the face 39 which can be turned toward the holding fixture 1 coinciding at a fold.
  • the differences between the width d 2 of the cam 34 and the width D of the groove 12 appear to be slight.
  • the dimensions of the supporting body, which is produced from plastic, with the cam 34 vary, in particular increase, on account of air humidity. Proceeding from the dimensions shown in FIG. 8 of a tool for producing the supporting body, a more pronounced difference between the widths in the circumferential direction U is therefore obtained in the event of contact of the supporting body with air humidity, such that even more clearly defined contact lines can be obtained.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US12/090,308 2005-11-08 2006-08-11 Holding Fixture For a Grinding Tool, Grinding Tool and Supporting Body For a Grinding Tool Abandoned US20080248733A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP05110452A EP1782917A1 (de) 2005-11-08 2005-11-08 Aufnahme für ein Schleifwerkzeug, Schleifwerkzeug und Tragkörper für ein Schleifwerkzeug
EP05110452.9 2005-11-08
EP06112817A EP1782918B1 (de) 2005-11-08 2006-04-20 Aufnahme für ein Schleifwerkzeug, Schleifwerkzeug und Tragkörper für ein Schleifwerkzeug
EP06112817.9 2006-04-20
PCT/EP2006/065237 WO2007054383A1 (de) 2005-11-08 2006-08-11 Aufnahme für ein schleifwerkzeug, schleifwerkzeug und tragkörper für ein schleifwerkzeug

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US20080248733A1 true US20080248733A1 (en) 2008-10-09

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Application Number Title Priority Date Filing Date
US12/090,308 Abandoned US20080248733A1 (en) 2005-11-08 2006-08-11 Holding Fixture For a Grinding Tool, Grinding Tool and Supporting Body For a Grinding Tool

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US (1) US20080248733A1 (de)
EP (3) EP1782917A1 (de)
AT (1) ATE397998T1 (de)
BR (1) BRPI0618635A2 (de)
DE (1) DE502006000901D1 (de)
DK (1) DK1782918T3 (de)
ES (1) ES2306368T3 (de)
PL (1) PL1782918T3 (de)
PT (1) PT1782918E (de)
WO (1) WO2007054383A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9656382B1 (en) 2016-06-28 2017-05-23 Wayne Comeau Tool fixture for electrically-powered hand tools
EP3479957A4 (de) * 2016-12-16 2020-06-03 Miretec Co., Ltd. Rotationsvorrichtung
US11167393B2 (en) * 2017-08-15 2021-11-09 Disco Corporation Cutting blade and mounting mechanism for cutting blade
US11518001B2 (en) 2018-02-20 2022-12-06 Weiler Corporation Backing pad assembly with anti-rotational locking feature for resin fiber discs

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN109531264B (zh) * 2018-12-24 2022-03-11 佛山市南海金嘉威机械设备有限公司 型材数控切割机的自动定切割长度方法
CN109877692B (zh) * 2019-03-13 2020-09-04 温州大学瓯江学院 打磨抛光机

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US3270468A (en) * 1963-07-01 1966-09-06 Merit Products Inc Abrasive device
US3270467A (en) * 1963-07-01 1966-09-06 Merit Products Inc Abrasive device
US4839998A (en) * 1986-01-16 1989-06-20 Aleck Block Abrasive apparatus
US6116996A (en) * 1997-09-29 2000-09-12 Yanase Kabushiki Kaisha Rotary grinding jig
US6530828B1 (en) * 1999-04-09 2003-03-11 Kolthoff & Co. Supporting plate for rotating tools for the fine machining of surfaces
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9656382B1 (en) 2016-06-28 2017-05-23 Wayne Comeau Tool fixture for electrically-powered hand tools
EP3479957A4 (de) * 2016-12-16 2020-06-03 Miretec Co., Ltd. Rotationsvorrichtung
US11167393B2 (en) * 2017-08-15 2021-11-09 Disco Corporation Cutting blade and mounting mechanism for cutting blade
US11518001B2 (en) 2018-02-20 2022-12-06 Weiler Corporation Backing pad assembly with anti-rotational locking feature for resin fiber discs

Also Published As

Publication number Publication date
EP1948396A1 (de) 2008-07-30
PL1782918T3 (pl) 2008-11-28
PT1782918E (pt) 2008-07-09
EP1782917A1 (de) 2007-05-09
ATE397998T1 (de) 2008-07-15
EP1782918A1 (de) 2007-05-09
ES2306368T3 (es) 2008-11-01
EP1782918B1 (de) 2008-06-11
DK1782918T3 (da) 2008-10-06
BRPI0618635A2 (pt) 2011-09-06
DE502006000901D1 (de) 2008-07-24
WO2007054383A1 (de) 2007-05-18

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