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
  • 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
  • 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
• • 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
  • B24B23/028—Angle 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
  • B24D7/16—Bushings; Mountings
• • 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 invention is based on a grinding machine tool holder according to the preamble of claim 1.
• a grinding machine tool holder for a hand-held angle grinding machine is known.
• the angle grinder has a drive shaft that has a thread on the tool side.
• the grinding ash tool holder has a driver and a clamping nut.
• the driver is pushed onto a collar of the drive shaft with an assembly opening and clamped non-positively against a support surface of the drive shaft via the clamping nut.
• the driver has a collar which extends in the axial direction on the tool side and which has radially recesses on its outer circumference on two opposite sides which extend in the axial direction up to a base Stretch bundles. Starting from the recesses, a groove extends in each case against the drive direction of the drive shaft on the outer circumference of the collar. The grooves are closed against the drive direction of the drive shaft and axially deviate from the recesses against the drive direction of the drive shaft.
• the grinding wheel has a hub with an assembly opening in which two opposite, radially inward-pointing tongues are arranged.
• the tongues can be more axial
• a stopper is arranged in the region of a recess on the circumference of the collar and is movably mounted in an opening in the axial direction. In a working position with the grinding wheel facing downwards, the stopper is axially m
• the invention is based on a grinding machine tool holder, in particular for a hand-held rotary grinding machine, with a driving device, by means of which an insert tool can be operatively connected to a drive shaft.
• the insert tool can be operatively connected to the entraining device via at least one latching element movably mounted against a spring element, which engages in an operating position of the insert tool and fixes the insert tool in a form-fitting manner.
• a high level of security can be achieved by the positive locking and a simple and inexpensive tool-free quick-action clamping system can be created. Unintentional running of the insert tool can be safely avoided, even with braked drive shafts where large braking torques can occur.
• a large deflection of the latching element can be made possible by the movably mounted latching element during assembly of the insert tool, whereby on the one hand a large overlap between two corresponding latching elements and a particularly secure form fit can be realized and on the other hand a clearly audible latching noise can be achieved which advantageously signals to an operator that the latching process has been completed as desired.
• the locking element can fix the insert tool directly or indirectly via an additional component, for example, via a latching lever or plunger, which is coupled to the latching element, rotatably and / or axially displaceably mounted, etc.
• the latching element can fix the insert tool in different directions directly and / or indirectly in a form-fitting manner, for example in the radial direction, in the axial direction and / or particularly advantageously in the circumferential direction. It is also possible for the insert tool to be positively fixed in a first direction, for example in the radial direction, by the form-fitting fixing of the insert tool with the latching element in a first direction, for example in the radial direction, for example in the circumferential direction.
• the movably mounted latching element can be designed in various forms which appear useful to the person skilled in the art, for example as an opening, projection, pin, bolt, etc., and can be arranged on the insert tool or on the driving device.
• the latching element can itself be movably mounted in a component m of a bearing point, for example in a flange of the driving device or a tool hub of the insert tool.
• the latching element can also be advantageously connected to a component movably mounted in a bearing point in a force-fitting, form-fitting and / or material-locking manner or in one piece, for example with a component mounted on the drive shaft or with a tool hub of the insert tool.
• the driving device can at least partially be designed as a releasable adapter part or can be non-detachably connected to the drive shaft in a force-fitting, form-fitting and / or material-locking manner.
• the grinding machine tool holder can be used to fasten various insert tools that appear to be useful to the person skilled in the art, such as insert tools for cutting, grinding, roughing, brushing, etc.
• a tool holder according to the invention can also be used to attach a grinding plate of eccentric grinding machines.
• the latching element can be designed to be movable in different directions against a spring element, for example in the circumferential direction or particularly advantageously in the axial direction, as a result of which a structurally simple solution can be achieved.
• Connection between the insert tool and the driving device is transferable. A large drive torque can be transmitted safely and it can also be avoided that a drive torque has an effect on a positive connection.
• the latching element can be released from its latched position with a release button and in particular can be moved against the spring element, an independent loosening of the latching connection, for example by a braking torque, can be safely avoided and safety can be increased.
• An operation of the In principle two circumferential directions can be made possible and the ease of assembly and disassembly of the insert tool can be increased.
• the insert tool can be connected to the driver device via a tongue and groove connection, which is secured in a form-fitting manner via at least one locking element m of an operating position of the insert tool.
• a tongue and groove connection in which individual components are used for several functions, for example the locking element and / or tongue elements engaging in grooves for radial centering, fixing in the axial direction and / or Around direction.
• the insert tool is connected to the entraining device in the circumferential direction via at least one first element and in the axial direction via at least one second element, simple and inexpensive tool hubs can be achieved, which can advantageously be made flat. A snagging of the tool hubs during production and storage can be avoided and good handling of the insert tool with its tool hubs can be made possible.
• the components can advantageously be designed for their function, ⁇ .h. either on the fixation in the circumferential direction or on the fixation in the axial direction.
• the elements can be formed by one component or advantageously by separate components.
• the tool hubs can simply be advantageously designed with a closed centering hole and low-vibration running of the insert tool can be made possible.
• the diameter of the centering hole can be achieved so that insert tools provided for the grinding machine tool holder according to the invention can be attached to conventional grinding machines using previously known fastening devices, in particular using fastening devices in which the insert tool with a clamping nut and a clamping flange on the drive shaft has a positive fit against a support surface in the axial direction and can be non-positively fixed in the circumferential direction.
• At least one latching element which extends in the axial direction, latches in an operating position of the insert tool in the axial direction into a recess of a tool hub of the insert tool corresponding to the latching element, and that
• Insert tool circumferentially fixed in a form-fitting manner.
• an advantageous form fit can be achieved in one circumferential direction and preferably in both circumferential directions.
• the latching element which extends in the axial direction, can be formed by a separate bolt or by a molded-on pin, which is produced, for example, by a deep-drawing process.
• At least one latching element which extends in the axial direction, is advantageously fastened in a component which is mounted displaceably on the drive shaft against the spring element.
• One and particularly advantageously several locking elements can be guided well over a large bearing surface on the drive shaft. Tilting of the latching elements and movement of the latching elements relative to one another can be avoided and a spring element that is advantageously rotationally symmetrical can be used. tig can be arranged, a desired spring force can be achieved for a detent.
• the driving device has at least one fastening element extending in the axial direction, which can be guided through at least one region of an elongated hole of a tool hub of the insert tool and can be displaced in the elongated hole into a narrowed region of the elongated hole and via which the insert tool is arranged via a fastening element on the fastening element Transmission surface in the slot can be fixed axially.
• the tool hub can advantageously be of low cost and essentially flat and can be used as a spring element, for example by the tool hub being elastically deformed when the component is moved in the elongated hole.
• the tool hub can be used to deflect a component against a spring element in the axial direction. Additional components, assembly effort and costs can be saved.
• a component that forms a support surface for the insert tool in the attached state of the insert tool advantageously has a recess in the region of the elongated hole, into which a part of the tool hub of an operating position of the insert tool is elastically printed.
• the fastening element extending in the axial direction for axially fixing the insert tool in the axial direction Mounted in a direction displaceable against a spring element, on the one hand an advantageously large spring travel can be realized independently of the tool hub and on the other hand the component and the spring element can be specifically designed for their separate functions.
• the fastening element can also be made at least partially in one piece with a spring element. If a plurality of components which extend in the axial direction are provided for the axial fixation, these can each be loaded via a spring element or advantageously via a common spring element, as a result of which additional ones
• a collar is preferably formed on a component of the driver device that forms a support surface for the insert tool, by means of which the insert tool can be centered radially.
• a self-contained centering surface can simply be formed.
• a recess is also conceivable, which engages the tool hub with a projection in the fastened state. If at least one latching element is integrally formed on a disk-shaped component and / or at least two elements for fixing the insert tool in the axial direction on a disk-shaped component, additional components, assembly effort and costs can be saved. Furthermore, press connections between individual components and the resulting weak points can be avoided.
• FIG. 1 shows a schematic cross section along the line II-II.
• FIG. 1 through a grinding machine tool holder according to the invention
• FIG. 4 shows a variant of FIG. 2,
• FIG. 5 is an exploded view of a variant of FIG. 2,
• FIG. 6 shows a tool hub from FIG. 5 from below, 7 shows a section along the line VII-VII in FIG. 6,
• Fig. 8 an unlocking button from FIG. 5 from below
• Fig. 9 shows a section along the line IX-IX in FIG. 8,
• FIG. 10 a driving element from FIG. 5 from below
• Fig. 11 the driving element from FIG. 10 from the side
• Fig. 12 shows a section along the line XII-XII.
• Fig. 10, Fig. 13 an exploded view of a variant
• Fig. 14 shows a section through a drive plate from FIG. 13 with molded-on bolts
• Fig. 15 is a side view of a sheet metal plate from FIGS. 13 and
• FIG. 16 a driving flange from FIG. 13 from below.
• FIG. 1 shows an angle grinding machine 10 from ooen with a housing 96 mounted in a housing, not shown in more detail
• the angle grinding machine 10 can be guided via a first handle 98, which extends in the longitudinal direction and is integrated in the housing 96 on the side facing away from a cutting disc 18, and via a second handle 102, which extends transversely to the longitudinal direction and is attached to a transmission housing 100 in the region of the cutting disc 18.
• a drive shaft 54 can be driven via a gear (not shown in more detail), on the end of which facing the cutting disc 18 a driving device 12 is arranged (FIG. 2).
• the driving device 12 has one on the side facing the cutting disc 18 on the Drive shaft 54 firmly pressed on driving flange 82 and, on a side facing away from the cutting disc 18, a driving shed 56 which is mounted on the drive shaft 54 so as to be axially displaceable against a centrally arranged helical spring 20.
• the driving flange 82 In the driving flange 82, three circumferential directions 34, 36 successively arranged, axially extending in the axial direction 38 to the cutting disc 18, pins 40 extending through the driving flange 82 are pressed.
• the pins 40 each have a head at their end facing the cutting disc 18, which has a larger diameter than a remaining part of the pin 40 and has a conical bearing surface 76 tapering in the axial direction 44 on a side facing the driving flange 82.
• the driving flange 82 forms an axial support surface for the cutting disc 18
• the driving flange 82 specifically a through-bore 104 is arranged in the circumferential direction 34, 36 between two pins 40.
• the driving disk 56 which is axially displaceable on the drive shaft 54, three bolts 24 are pressed one after the other in the circumferential direction 34, 36, which bolts extend axially 38 to the cutting disk 18 over the driving disk 56.
• the driving disk 56 is pressed by the screw spring 20 in direction 38 to the cutting disk 18 against the driving flange 82.
• the bolts 24 protrude through the through holes 104 and extend axially 38 over the driving flange 82nd
• the driving device 12 has a pot-shaped unlocking button 28, which is arranged centrally on the side facing the cutting disk 18.
• the unlocking button 28 has three segments 106, which are evenly distributed in the circumferential direction 34, 36 and extend in the axial direction 44 to the axially movable driving disk 56, which are separated by corresponding Grip recesses 108 of the driving flange 82 and over one
• Snap ring 110 are firmly connected to the drive plate 56 in the axial direction 38, 44.
• the unlocking button 28 is guided in an annular recess 112 in the driving flange 82 so as to be displaceable in the axial direction 38, 44.
• the cutting disc 18 has a Blechnaoe 52, which is firmly connected to an abrasive 114 via a rivet connection not shown and pressed (Fig. 3).
• the tool hub could also be made of another material that appears useful to a person skilled in the art, such as plastic, etc.
• the sheet metal hub 52 has three evenly distributed bores 46, 48, 50 in the circumferential direction 34, 36, the diameter of which is slightly larger than that Diameter of the bolts 24.
• the sheet metal hub 52 has three oblong holes 64, 66, 68, which are evenly distributed in the circumferential direction 34, 36 and extend in the circumferential direction 34, 36, each of which has a narrow region 70, 72, 74 and a wide one through a bore have produced area 58, 60, 62, the diameter of which is slightly larger than the diameter of the heads of the pins 40.
• the sheet metal hub 52 has a centering hole 116, the diameter of which is advantageously chosen so that the cutting disc 18 can also be clamped on a conventional angular grinding machine using a conventional clamping system with a clamping flange and a spindle nut. So-called downward compatibility is ensured.
• the cutting disc 18 When installing the cutting disc 18, the cutting disc 18 is pushed with its centering hole 116 onto the unlocking button 28 and centered radially. Then the
• Cutting disc 18 is rotated until the pins 40 grip the wide areas 58, 60, 62 of the elongated holes 64, 66, 68 of the sheet metal hub 52 provided for this purpose. Pressing the sheet metal hub 52 against the support surface 80 of the driving flange 82 causes the bolts 24, the through bores 104 and the driving disk 56 against the spring force of the helical spring 20 on the drive shaft 54 to be axially displaced in the direction 44 facing away from the cutting disk 18.
• a further rotation of the sheet metal hub 52 counteracts the drive direction 34 in such a way that the pins 40 move the arcuate narrow regions 70, 72, 74 of the elongated holes 64, 66, 68.
• the pins 40 with their conical contact surfaces 76 print on the edges of the elongated holes 64, 66, 68 and print them elastically in the recesses 84 of the driving flange 82.
• the sheet metal hub 52 is thereby printed on the support plate 80 and fixed in the axial direction 38, 44 ,
• E Driving torque of the electric motor of the rotary grinding machine 10 can be transmitted non-positively from the drive shaft 54 to the driving flange 82 and from the driving flange 82 positively via the bolts 24 to the cutting disc 18.
• the drive torque is transmitted exclusively via the bolts 24, since the elongated holes 64, 66, 68 are designed in such a way that the pins 40 do not rest against the end of the narrow areas 70, 72, 74 of the elongated holes 64, 66, 68 when the bolts 24 are engaged come.
• braking torque which occurs when and after the electric motor is switched off and which is opposite to the drive torque can be positively transmitted from the driving flange 82 to the cutting disc 18 via the bolts 24. Unwanted loosening of the cutting disc 18 is safely avoided.
• An advantageous, uniform distribution of forces and mass is achieved by the three bolts 24, which are evenly distributed in the circumferential direction 34, 36.
• the release button 28 is pressed.
• the drive plate 56 is with the bolt 24 via the release button 28 against the coil spring 20 which of the
• Cutting disc 18 shifted away from axial direction 44, where by moving the bolts 24 in the axial direction 44 out of their locking position or out of the bores 46, 48, 50 of the sheet metal hub 52. Then the cutting disc 18 is rotated in the drive direction 34, namely until the pins 40 in the wide areas 58, 60, 62 of the elongated holes 64, 66, 68 for
• FIG. 4 shows an alternative exemplary embodiment with a driving device 14 to the exemplary embodiment in FIG. 2.
• Components that are essentially the same are fundamentally numbered with the same reference numerals in the exemplary embodiments shown.
• the driving device 14 has a driving flange 90 pressed onto the drive shaft 54.
• a flange 92 is formed on the driving flange 90 forming a bearing surface 88 for the cutting disc 18, via which the cutting disc 18 is radially centered in the condition with its hundredweight 116. Radial forces can advantageously be absorbed by the driving flange 90 without loading the unlocking button 28.
• the driving flange 90 there are three pins 42 distributed uniformly 34, 36 in the circumferential direction and extending in the axial direction 38 over the support surface 88 for axial Fixing the cutting disc 18 in the axial direction 38 against a plate spring 86 slidably mounted.
• the pins 42 each have at their end facing the cutting disc 18 a head which has a larger diameter compared to a remaining part of the pin 42 and on a side facing the driving flange 90 a conical bearing surface 78 tapering in the axial direction 44 and a parallel to the Contact surface 88 has running surface 78a.
• the plate springs 86 press the cutting disc 18 against the support surface 88 via the contact surfaces 78a of the pins 42.
• the pins can also be loaded via a common spring element, for example via a non-closer element that extends over the entire circumference illustrated disc spring.
• the exemplary embodiment shown in FIG. 4 with the axially displaceably mounted pins 42 is particularly suitable for thick and / or slightly elastically deformable tool hubs.
• FIG. 5 to 12 show a further exemplary embodiment with a driving device 16.
• the take-along device 16 has a driving flange 118 fastened on a drive shaft (not shown in more detail) via a thread 120 (FIGS. 5, 10, 11 and 12).
• the driving flange could also be connected to the drive shaft via a non-detachable connection, or it could be made in one piece with it.
• the driving flange 118 has three segments 122, 124, 126, which are evenly distributed in the circumferential direction 34, 36 and extend in the axial direction 38 to a cutting disc 32, and intermediate spaces 128, 130, 132 (FIG. 10). Each of these segments 122, 124, 126 has a groove 134, 136, 138 on its circumference, which is closed against the drive direction 34 via a rotary stop 140, 142, 144 and is open in the drive direction 34.
• the driving flange 118 also has a support surface 180 which defines an axial position of the cutting disc 32. Furthermore, the segments 122, 124, 126 form a centering collar for the cutting disc 32, via which the cutting disc 32 can be centered.
• a locking element 26 is connected via three locking pins 146, 148, 150 distributed in the circumferential direction 34, 36, which engage through corresponding recesses 158, 160, 162 of the driving flange 118 and engage behind the driving flange 118 radially outward (FIG . 5, 8 and 9).
• the locking element 26 which also forms an unlocking button 30, three locking segments 152, 154, 156, which are distributed uniformly in the circumferential direction 34, 36 and are radially outward, are formed.
• a helical compression spring 22 is arranged between the driving flange 118 and the latching element 26, against which the latching element 26 m is from the axial direction 44 facing away from the cutting disc 32 is displaceable relative to the driving flange 118.
• the latching element 26 is guided over radially outwardly facing bearing surfaces 164, 166, 168 between the blocking segments 152, 154, 156 in radially inwardly facing surfaces of the segments 122, 124, 126 of the driving flange 118.
• the contact surfaces 164, 166, 168 are formed by projections 170 extending radially outwards (FIG. 8).
• the locking segments 152, 154, 156 are in the assembled state in the spaces 128, 130, 132 of the driving flange 118 and protrude radially over a groove bottom of the grooves 134, 136, 138. In an initial position before the cutting disc 32 is installed, they are located Locking segments 152, 154, 156 of the locking element 26 in front of the grooves 134, 136, 138, namely loaded by the prestressed helical compression spring 22.
• the cutting disc 32 has an annular sheet metal hub 94, which is pressed on its outer diameter with an abrasive 114 and has on its inner diameter radially inwardly pointing tongues or spring elements 172, 174, 176 (FIGS. 5, 6 and 7).
• the spring elements 172, 174, 176 are used in connection with the driving flange 118 and the release button 30 for transmitting the drive torque, for axially positioning the cutting disk 32 and for securing the cutting disk 32 against running out when the electric motor is switched off or when the drive shaft is braked.
• the spring elements in addition to the segments 122, 124, 126 could PT DE01 / 01178
• Centering the cutting disc 32 to the drive shaft can be used.
• the cutting disc 32 When the cutting disc 32 is installed, it is aligned on the driving flange 118 so that the spring elements 172, 174, 176 on the inside diameter of the sheet metal hub 94 point into the spaces 128, 130, 132 between the segments 122, 124, 126 on the driving flange 118 , The spring elements 172, 174, 176 of the cutting disc 32 lie on the locking segments 152, 154, 156 of the unlocking button 30. Then the
• Cutting disc 32 is printed in the axial direction 44 up to the bearing surface 180 of the driving flange 118.
• the spring elements 172, 174, 176 move the unlocking button 30 with its locking segments 152, 154, 156 against the spring force of the helical compression spring 22 in the direction 44 axially facing away from the cutting disc 32.
• the locking segments 152, 154, 156 are in recesses 178 of the driving flange 118 printed (Fig. 12) so that the spring elements 172, 174, 176 come to rest in front of the grooves 134, 136, 138.
• the cutting disc 32 is centered radially over the centering collar formed by the segments 122, 124, 126.
• the spring elements 172, 174, 176 engage in the grooves 134, 136, 138 of the driving flange 118.
• a tongue and groove connection is created.
• the spring elements 172, 174, 176 have the same or a slightly shorter length in the circumferential direction 36 than the grooves 134, 136, 138.
• the locking element 26 snaps with its ratchet elements 152, 154, 156 em, the helical compression spring 22 pushing the locking element 26 with its locking segments 152, 154, 156 m into its starting position, so that the locking segments 152, 154, 156 again come to rest in front of the grooves 134, 136, 138 men.
• the locking element 26 fixes with its locking segments
• a latching noise is audible for an operator, which signals to the operator that the latching process has been completed as required and that it is ready for operation.
• the drive torque is transmitted in a form-fitting manner via the rotary stops 140, 142, 144 of the driving flange 118 to the spring elements 172, 174, 176 of the sheet metal hub 94 or the cutting disk 32.
• the cutting disk 32 is above that of the segments 122, 124, 126 of the driving flange 118 formed centering and centered and held by the support surface 180 and the grooves 134, 136, 138 of their axial position.
• braking torque which occurs when and after the electric motor is switched off and which is opposite to the drive torque is transmitted positively from the locking segments 152, 154, 156 and the driving flange 118 to the spring elements 172, 174, 176 of the cutting disc 32.
• a play compensation is achieved in the axial direction by a spring element m not shown, formed by a sheet metal strip, in the grooves 134, 136, 138. Furthermore, it was possible to achieve a play compensation by means of other spring elements which appear sensible to the person skilled in the art, such as, for example, spring-loaded balls, on suitable ones
• Points of the driving flange are arranged and the Fix the cutting disc with no play, and / or with a slight oversize of the spring elements of the tool hub, due to the slightly wedge-shaped shape of the grooves and the spring elements of the tool hub, etc.
• the release button 30 is pressed in the axial direction 44 facing away from the cutting disc 32.
• the locking segments 152, 154, 156 of the unlocking button 30 or the latching element 26, the recesses 178 of the driving flange 118 are displaced.
• the cutting disc 32 m in the drive direction 34 with its spring elements 172, 174, 176 can be rotated out of the grooves 134, 136, 138 of the driving flange 118 and pulled off in the axial direction 38.
• the release button 30 is pressed back into its starting position by the helical compression spring 22.
• FIG. 13 shows an alternative exemplary embodiment with a driving device 300 to the exemplary embodiment in FIG. 2.
• the driving device 300 has a driving flange 90, which forms a support surface 88 for a cutting disc, not shown in more detail.
• a collar 92 is formed on the side facing the cutting disc, by means of which the cutting disc is centered radially with its centering hole in the assembled state.
• a sheet metal plate 308 On a side of the driving flange 90 facing away from the cutting disc, there is a sheet metal plate 308 with a three m circumferential direction that is uniformly distributed and molded in one piece Fastening elements 306 extending in the axial direction 38 are arranged for axially fixing the cutting disc.
• the fastening elements 306 are formed onto the sheet metal plate 308 in a bending process.
• the driving flange 90, a corrugated spring 312 and the sheet metal plate 308 are preassembled.
• the corrugated spring 312 is slid onto a collar 322 of the driving flange 90 which faces away from the cutting disc.
• the fastening elements 306 of the sheet metal plate 308, de having a hook-shaped extension at their free end with an inclined surface 310 pointing in the circumferential direction are guided in the axial direction 38 through recesses 314 of the driving flange 90, each by widening Areas 316 of the recesses 314 (FIGS. 13 and 15).
• the corrugated spring 312 is pretensioned by compressing and rotating the sheet metal plate 308 and the driving flange 90 against one another, and the sheet metal plate 308 and the driving flange 90 are positively connected in the axial direction 38, 44, specifically by the hook-shaped ones
• the Wellfe ⁇ er 312 and the driving flange 90 are pre-assembled, a compression spring 20 and a driving plate 304 with three are evenly distributed over the circumference. ten, extending in the axial direction 38, e integrally molded bolt 302 is attached to a drive shaft 54.
• the bolts 302 are formed in a deep-drawing process on a sheet metal plate forming the driving plate 304 (FIG. 14).
• the pre-assembled assembly consisting of the sheet metal plate 308, the wave spring 312 and the driving flange 90, is then mounted on the drive shaft 54.
• the bolts 302 are guided through recesses 320 formed on the circumference of the sheet metal plate 308 and through bores 104 in the driving flange 90 and engage through the bores 104 in the assembled state.
• the sheet metal plate 308 and the driving flange 90 are secured against rotation relative to one another by the bolts 302.
• the driving flange 90 is pressed onto the drive shaft 54 and then secured with a retaining ring, not shown in more detail.
• a retaining ring not shown in more detail.
• other connections which appear to be useful to the person skilled in the art are also conceivable, such as a compression connection, etc.
• the hook-shaped extensions of the fastening elements 306 are guided through the wide areas 58, 60, 62 of the elongated holes 64, 66, 68 of the sheet metal hub 52 (FIG. 13), em Rotating the sheet metal hub 52 counter to the drive direction 34 such that the hook-shaped extensions are moved into the arcuate, narrow areas 70, 72, 74 of the elongated holes 64, 66, 68 of the sheet metal hub 52.
• the sheet metal plate 308 is fastened axially with the fastening elements 306 via the inclined surfaces 310.
• the corrugated spring 312 presses the cutting disc 18 against the bearing surface 88 via the edges 310a of the hook-shaped extensions.
• the fastening elements and the elongated holes in the sheet metal hub can be rotated by 180 °, so that the assembly direction is reversed, and the sheet metal hub is rotated in the drive direction during assembly. If the fastening elements are rotated by 180 °, an inclined surface leads in advance of a lower end edge of the fastening element, so that injuries from the end edge can be avoided.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
• Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
• Polishing Bodies And Polishing Tools (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=7638015

Family Applications (1)

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• 2000
  • 2000-04-07 DE DE10017458A patent/DE10017458A1/de not_active Ceased
• 2001
  • 2001-03-28 WO PCT/DE2001/001178 patent/WO2001076822A1/de active Application Filing
  • 2001-03-28 CN CNB01800864XA patent/CN1179822C/zh not_active Expired - Lifetime
  • 2001-03-28 JP JP2001574324A patent/JP5108192B2/ja not_active Expired - Fee Related
  • 2001-03-28 KR KR1020017015706A patent/KR20020020725A/ko not_active Application Discontinuation
  • 2001-03-28 US US09/980,933 patent/US6786811B2/en not_active Expired - Lifetime
  • 2001-03-28 EP EP01929267A patent/EP1274543A1/de not_active Withdrawn

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