EP0513283B1 - Dispositif pour l'affutage, la rectification et le polissage d'instruments dentaires, parodontaux et/ou chirurgicaux - Google Patents

Dispositif pour l'affutage, la rectification et le polissage d'instruments dentaires, parodontaux et/ou chirurgicaux Download PDF

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Publication number
EP0513283B1
EP0513283B1 EP91920421A EP91920421A EP0513283B1 EP 0513283 B1 EP0513283 B1 EP 0513283B1 EP 91920421 A EP91920421 A EP 91920421A EP 91920421 A EP91920421 A EP 91920421A EP 0513283 B1 EP0513283 B1 EP 0513283B1
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EP
European Patent Office
Prior art keywords
grinding
support structure
holding
connecting member
control member
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.)
Expired - Lifetime
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EP91920421A
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German (de)
English (en)
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EP0513283A1 (fr
Inventor
Kurt Olbrich
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.)
Quetin Roswitha
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Quetin Roswitha
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Publication date
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Publication of EP0513283A1 publication Critical patent/EP0513283A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/60—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of tools not covered by the preceding subgroups
    • B24B3/605—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of tools not covered by the preceding subgroups of surgical or dental instruments

Definitions

  • the invention relates to a device for sharpening, grinding and polishing dental, periodontal and / or surgical instruments of the type specified in the preamble of claim 1.
  • the maintenance of medical instruments such as Dental, periodontal and / or surgical instruments that are not intended for single use are a necessary prerequisite for successful therapy. Maintenance includes, among other things, sharpening, re-cutting, grinding and polishing the instruments that have become dull or scratchy due to use, for example, or that are no longer optimally usable due to other influences.
  • regrind or re-sharpen valuable instruments such as scalers, curettes, gingival marginal bevels, excavators, carving instruments, raspatories, root elevators, scissors, sharp spoons etc. in order to be able to use these instruments successfully several times.
  • EP-A-0 307 740 relates to a device for sharpening the cutting edges of scalers clamped in a holder and other periodontal instruments with a motor-driven grinding wheel.
  • the device described there is intended to reproducibly sharpen the cutting edge of periodontal instruments, that is to say always with the same grinding angles and the same grinding pressure.
  • the grinding wheel used for sharpening in the form of a grinding wheel is rotatably mounted on a bearing block which is supported by a supporting structure.
  • the support structure has two support arms which are connected to the bearing block in an articulated manner and whose free ends are connected to one another in an articulated manner via a connecting part.
  • the four joints between the bearing block, support arms and connecting part form a parallelogram.
  • the supporting structure is rotatably mounted so that the grinding body performs a circular path movement when the supporting structure rotates.
  • the support structure protrudes from an opening in the top of a base housing, on which two holding arms are attached, between which the clamping device is rotatably mounted about a horizontal axis.
  • the connecting part connecting the two support arms of the support structure is pivotally mounted.
  • the connecting part is pivoted about its pivot point by means of a horizontally displaceable sliding block, which bears against a fixed control element and which, when being scanned from its control surface, moves during the rotation of the supporting structure.
  • the support structure of the known grinding machine can only be rotated about a fixed vertical axis. Instruments, along the cutting edges of which the grinding wheel must be displaceable longitudinally in order to be able to sharpen them over the entire length, cannot be worked with the known device, or only to a limited extent. Furthermore, the clamping device allows only a limited number of different instruments to be clamped.
  • the invention has for its object to provide a device for sharpening, grinding and polishing dental, periodontal and / or surgical instruments, with which a large variety of differently designed instruments can be sharpened, with a high variability of the grinding movement and an adjustment of the grinding angle to the respective rotary movement and thus a high accuracy of the grinding process while maintaining the optimal grinding angle is made possible.
  • the connecting part rests on the cam track of a control member or rests thereon in a spring-loaded manner and can be swung up or down by the control member when the supporting structure rotates.
  • the connecting part In order to be able to incline the bearing block and thus the grinding body and its grinding surface, the connecting part must be pivoted. This pivoting is realized in a structurally simple manner in that the connecting part rests on the control member from above or rests with a prestressing force from above against the control member and thus against its control surface (cam track).
  • This direct control of the connecting part is structurally simpler and more reliable than an arrangement in which a control element provided between the control element and the connecting part must convert the movement of the control element predetermined by the contour of the control element into a pivoting up or downward movement of the connecting part.
  • the connection of the support arms with the connecting part and the bearing block for the grinding wheel is carried out in the manner of a parallelogram.
  • the hinge point of a support arm with the connecting part is arranged stationary on the turntable for holding and rotating the support structure.
  • the articulated connection of the second support arm with the connecting part is arranged between the "fixed" articulation point and the point of contact of the connecting arm on the control member.
  • the connecting part is preferably provided with a scanning element, for example a sliding or rolling body, the scanning element moving along a control surface provided on the control element when the supporting structure rotates, the contour of which is designed such that the connecting part assumes different pivot positions when the supporting structure rotates .
  • a scanning element for example a sliding or rolling body
  • the connecting part is articulated to a handlebar, which in turn is articulated to another connecting part which, like the connecting part belonging to the supporting structure, is articulated to a rotatably mounted holding part of the holding element, the four connecting points of two connecting parts with the holding part and the handlebar form the corner points of a parallelogram.
  • the handlebar which runs substantially vertically and parallel to the holding part, provides the control surface of the Control element adjacent scanning element.
  • the parallelogram of this handlebar ensures the maintenance of the substantially vertical orientation of the handlebar when this follows up and down movements of the control surface of the control member.
  • control member is designed as a cylindrical ring body, which is arranged coaxially to the axis of rotation of the support structure and whose one end face is designed as a control surface for controlling the movement of the connecting part when the support structure rotates; viewed in the circumferential direction, the ring body has different axial lengths in sections, that is to say it is stepped, the transitions being created by inclined connecting surfaces.
  • the pivoting movements that the connecting part executes during one revolution of the supporting structure are only a few degrees, which is why the handlebar provided with the scanning element only shifts in the horizontal direction by a small distance.
  • the front ring surface must therefore only have a small width to ensure that the scanning element of the handlebar runs or slides over 360 ° on the front ring surface.
  • two stops are provided which limit the angle of rotation by which the supporting structure can be rotated to approximately 180 ° in both directions of rotation, in such a way that the grinding surface only with the Lateral surfaces and the tip of the instrument to be sharpened come into contact when the support structure is rotated 180 ° around the tip end of the instrument.
  • These stops prevent the lateral surfaces of an instrument from being ground in the transition region to its shaft, which connects the end of the instrument to be machined with a handle. Sharp edges in this area of the instrument can injure the patient.
  • the stops are designed as detent stops, which allow the supporting structure to be turned further beyond a certain torque. If it is once necessary to want to turn the supporting structure beyond the rotation angle range limited by the two stops, this is possible when the stops are designed as latching stops, ie as flexible stops.
  • a spring-loaded ball is preferably used as the detent stop, which is arranged in the top of the base housing in the region of its opening edge. The opening of the base housing and the opening edge are covered by a disk or the like, which is rotatably mounted on the holding part and carries the supporting structure. The disk rotates when the supporting structure is rotated or the supporting structure can be rotated by rotating the disk. Likewise, the longitudinal displacement of the supporting structure can be effected by moving the turntable.
  • ribs Arranged on the underside of the turntable facing the base housing top are two radial ribs which are offset by 180 °, that is to say diametrically opposite, and which abut against the locking ball when the turntable rotates. Since the ribs are radial, they touch the locking ball in each longitudinal displacement position of the turntable when the turntable is rotated.
  • the inclination of the grinding surface of the grinding body can be preset.
  • the bearing block is formed in two parts and has a first element which rotatably holds the grinding body and a second element to which the carrier arms are articulated.
  • the two elements can be pivoted relative to one another about an axis, the first element in its pivoting position being fixable on the second element. In this way, either a stepless or other adjustability of the first element relative to the second is possible.
  • the measure of the presetting can be read off.
  • a further locking device is provided with which the supporting structure can be secured against twisting.
  • Both locking devices are each designed as adjusting or locking screws with which, on the one hand, the rotational movement and, on the other hand, the longitudinal movement are made more difficult or are completely prevented by increased friction.
  • the supporting structure and the holding element can only be rotated or displaced when minimum forces are applied. This possibility of adjusting the friction will be used in particular if with the sharpen assigned persons individual handling differences due to different fine motor skills.
  • the supporting structure is prestressed by means of a spring against the clamped end of the instrument to be ground, so that the grinding surface is always in contact with the instrument or at its end with a certain preload force.
  • this spring which is advantageously arranged between one of the support arms and the cold part on which the connecting part is articulated, the prestressing force can be adjusted.
  • an engagement point of the spring can be changed using an adjusting screw. This is particularly useful in the case of thin, pointed instruments, since if the pressure forces are too great, such as are required when grinding chisel-like instruments, the instrument would literally be "ground away".
  • Another preferred embodiment of the invention is achieved by a special configuration of the motor-operated grinding body.
  • the grinding wheel is axially spring loaded in the bearing block.
  • This axial suspension of the grinding wheel has the advantage that, especially in the front area of scalers and curettes, the contact pressure of the rotating grinding wheel, particularly in the case of very narrow, pointed or rounded contours of the ends to be ground, the removal is correspondingly low and thus a compensation to create straight latitudes.
  • the original contours of the instruments to be ground can be retained over a fairly long period of time despite multiple regrinding.
  • FIG. 1 shows a perspective view of a grinding machine 10 for sharpening, grinding and polishing a dental, periodontal and / or surgical instrument 12.
  • the grinding machine 10 has a base housing 14, from whose top 16 two upstanding arms 18 protrude. On the arms 18 are horizontal and brackets 20 extending parallel to the upper side 16 of the base housing 14. Between the ends of the parallel brackets 20, a bracket U 22 which is essentially U-shaped in plan view is rotatably mounted about a horizontal axis.
  • the bracket 22 has two parallel arms 24, the ends of which are rotatably attached to the arms 20 of the arms 18. Between the two arms 24 of the bracket 22, this is provided with a straight guide bar 26.
  • a clamping device 28 for later clamping of the instrument 12 to be machined is longitudinally displaceably guided on the guide bar 26 so as to be longitudinally displaceable.
  • An essentially rod-shaped adjustment aid 30 is removably inserted between the arms 24 of the holding bracket 22.
  • the adjustment aid 30, which will be discussed in detail later, extends coaxially to the horizontal pivot axis of the bracket 22 and is rotatably coupled to one of the arms 20 of the arms 18, so it does not rotate with the bracket 22 when it is pivoted.
  • a turntable 32 is rotatably arranged, which carries an upstanding holding part 34.
  • a support structure 36 consisting of a plurality of links is pivotally mounted about a horizontal axis.
  • the support structure 36 carries a two-part bearing block 38.
  • the bearing block 38 consists of a first element 40 which is articulated to four essentially vertically extending support arms 42.
  • the second element 46 of the bearing block 38 is pivotably connected to the first element 40 of the bearing block 38 about an axis 44.
  • the second element 46 has an electric motor, with the drive shaft of which a grinding body 48 can be coupled.
  • the two elements 44, 46 of the bearing block 38 can be fixed relative to one another by a locking screw 50.
  • the more precise structure of the support structure 36 is described below with reference to FIG. 2.
  • the four support arms 42 are articulated on the second element 46 of the bearing block 38, that is to say they are rotatably mounted on the bearing block 38 about axes 52.
  • the lower ends of the four support arms 42 facing away from the bearing block 38 are connected in pairs via a connecting part in the form of two horizontal links 54, the connecting points being designed as axes of rotation 56.
  • the four axes 52, 56 are the corner points of a vertical parallelogram, which consists of the second element 46 of the bearing block 38, the horizontal link 54 and the support arms 42.
  • the connection point of the horizontal link 54 with two of the support arms 42 is also the fulcrum of the support structure 38 around the holding part 34.
  • the horizontal link 54 is part of a horizontal second parallelogram, which consists of further horizontal links 58, which are pivoted about an axis 60 on the holding part 34 .
  • the ends of the horizontal links 54, 58 facing away from the holding part 34 are connected via a vertical link 62, relative to which they can be pivoted about axes of rotation 64.
  • the axis of rotation 56 connected to the holding part 34 and the axes of rotation 60, 64 likewise form the corner points of a parallelogram, consisting of the horizontal links 54, 58, the holding part 34 and the vertical link 62.
  • a coil tension spring 66 is arranged, which the support structure 38 in the vertical position or in prestresses a position in which the grinding surface 68 of the grinding body 48 bears against the end of the instrument 12 to be ground.
  • the support structure 38 can be moved back against the force of the spring 66 by hand until two latching elements 70 engage on a holding part 71 (see in particular FIGS. 2 and 4).
  • FIGS. 2 and 4 there is an opening 72 in the upper side 16 of the base housing 14 in which a control element in the form of an annular body 74 is arranged.
  • the ring body 74 is fastened on a holding plate 76 which is guided in a longitudinally displaceable manner on the bottom 78 of the base housing 14.
  • two parallel strips 80 are attached to the floor, which are connected via roller bearings 82 to the holding plate 76 or strips 84 attached to the underside thereof.
  • the strips 80, 84 which are parallel to one another run in a direction perpendicular to the straight guide strip 26 of the retaining bracket 22.
  • the holding plate 76 can thus be moved toward and away from the clamping device, which is only indicated at 28 in FIG. Via a locking screw 86 protruding laterally from the base housing 14, which acts on the holding plate 76 according to FIG. 4, the holding plate 76 can be determined in an assumed longitudinal displacement position or the frictional force when moving the holding plate 76 is increased.
  • the ring body 74 extends coaxially around a cylindrical body 86 which is firmly connected to the turntable 32 from below.
  • the cylindrical body 76 On its underside, the cylindrical body 76 has a ball bearing rotatable coaxial shaft which is screwed to the holding plate 76 (see Figure 4). In this way, the turntable 32 and thus the holding part 34 and the support structure 38 are rotatably mounted on the holding plate 76.
  • the cylinder body 86 can be fixed relative to the holding plate 76 by means of a locking screw 90 which protrudes upward from the turntable 32.
  • the vertical link 62 of the horizontal parallelogram of which one horizontal link 54 is part of the supporting structure 38, is supported on the end ring surface 92.
  • the vertical link 62 is provided at its lower end with a roller 94 which rolls on the end face 92 when the turntable 32 is rotated (with such a rotation of the turntable 32 together with the upstanding holding part 34 and the supporting structure 38 can the ring body 74 does not rotate as it is rigidly attached to the holding plate 76).
  • the vertical link 62 executes an upward or downward movement when the turntable 32 rotates, while maintaining its vertical alignment due to the parallelogram guidance by the horizontal parallelogram.
  • This movement of the vertical link 62 tilts the support structure 38, with the result that the inclination of the grinding surface 68 changes.
  • the gradation of the ring body 74 is in the angular range in which the grinding surface 68 is moved around the tip of the end of the instrument 12 to be ground.
  • the vertical link 62b scans the end ring surface 92 of the ring body 74 when the support structure 38 or the turntable 32 rotates, the movement of the vertical link 62 being controlled by the end ring surface 92, that is to say the end ring surface 92 is the control surface of the ring body 74. So that the roller 94 always bears against the end ring surface 92, one of the lower further horizontal links 58 of the horizontal parallelogram is prestressed downward via a tension spring 96 acting on the cylinder body 86, so that the roller 94 bears with pressure on the end ring surface 92.
  • the bearing block 38 can be pivoted.
  • the first element 40 of the bearing block 38 is pivoted against the second element 46 of the bearing block 38 connected to the support arms 42.
  • a latching connection is provided between these two elements, one of the two elements having a spring-loaded latching element and the other bearing block element having a multiplicity of latching depressions.
  • the first bearing block element 40 which at the same time also carries the housing 98 of a drive motor for the grinding body 48, is provided with a scale which, when the two bearing block elements are pivoted relative to one another, pivots relative to a pointer element 100 which is rigidly attached to the second bearing block element 46.
  • the inclination of the grinding surface 68 can be preset and adapted to the instrument to be machined.
  • the additional change in inclination of the grinding surface 68 when the turntable 32 rotates is determined by the configuration and contour of the end ring surface 92 of the ring body 74.
  • stop ribs 104 on the underside of the turntable 32, which are arranged opposite one another by 180 ° and run radially.
  • the stop ribs 104 cooperate with a locking ball 106 arranged on the upper side 16 of the base housing 14 in the edge region of the opening 72, against which the stop ribs 104 abut when the turntable 32 rotates.
  • the rotational movement of the supporting structure 38 or of the grinding body 48 is limited to 180 °, the grinding surface being arranged at right angles to the straight guide strip 26 of the holding bracket 22 for the clamping device 28 in both rotational end positions (such a limit position can be seen in FIG. 5 in plan view) ).
  • the locking ball 106 is always in the rotation range of the stop ribs 104, so that the stop function is always guaranteed. Only when a greater torque is applied to the turntable 32 by hand can the stops limiting the rotary movement be overcome by the detent ball 106 evading the force of the spring of the respective stop rib 106.
  • the clamping device 28 will be briefly described below, in particular with reference to FIGS. 1 and 5.
  • the clamping device 28 has two plates 120, 122 arranged on both sides of the guide bar 26, between which cylindrical rollers 124 are rotatably arranged, the peripheral surfaces of which bear against the guide bar 26 on both sides thereof.
  • the lower plate 122 is provided with a locking screw 126, with which the two plates 120, 122 in one certain position relative to the guide bar 26 can be fixed on this.
  • the upper plate 120 carries a clamping jaw device 128.
  • the clamping jaw device 128 consists of a base plate 130 rotatably connected to the plate 120, which carries a fixed clamping jaw 132.
  • a movable clamping jaw 134 is provided, which can be moved toward and away from the fixed clamping jaw 132 when a screw 136 is rotated.
  • the two mutually facing inner surfaces of the clamping jaws 132, 134 are provided with profiled rubber coatings.
  • the movements which the guide bar 26 between the holding arms 18, the clamping device 28 along the guide bar 26 and the clamping jaw device 128 can make relative to the plate 120 of the clamping device 28 are indicated in FIG. 5 by double arrows.
  • FIGS. 7 to 10 show adjustment aids according to various embodiments, with the aid of which the instrument 12 to be machined can be positioned or aligned before clamping by the clamping device 28 such that the facial surface of the instrument 12 is plane-parallel, that is to say at right angles to the axis of rotation of the supporting structure runs.
  • the adjustment aids 138, 140 shown in FIGS. 8 to 10 are used for this.
  • the adjustment aid 138 is a rod, on the front ends of which pins 142 are arranged.
  • the pins 142 dip into receiving holes 144, which are arranged on the joints 146 between the arms 20 of the arms 18 and the arms 24 of the holding bracket 22 and are coaxial with the axis of rotation 116.
  • a spring-loaded sleeve 148 is arranged, which is displaceable in the axial direction of the rod 138 and on which the pin 142 is arranged.
  • the movement of the sleeve 148 is shown in Figure 8 by a double arrow.
  • the spring 150 presses the sleeve 148 away from the rod so that the rod 138 is held clamped by the spring 150 between the joints 146 or the arms 24 of the holding bracket 22.
  • the pin 142 disengages from the receiving hole 144 so that the adjustment aid can be removed from the device. In the same way, the adjustment aid can be inserted into the device with the sleeve 148 withdrawn.
  • a cutout 152 which has an optical marking in the form of notched glasses 154 which extends transversely to the extension of the rod 138.
  • the adjustment aid 140 In order to be able to align the instrument held in such a way that its facial surface runs horizontally, the adjustment aid 140 according to FIGS. 9 and 10 attached to the end of the instrument to be processed.
  • the adjustment aid 140 consists of an adjustment pin 156, to which an essentially cylindrical housing 158 extending radially to the centering pin 156 is connected.
  • a bolt 160 In the housing 158, a bolt 160 is guided so as to be longitudinally displaceable, which is prestressed in the direction of the centering pin 156 by means of a spring 162.
  • the bolt 160 protrudes out of the housing 158 at the end of the housing 158 facing away from the centering pin 156.
  • a button 164 or the like manually retract the bolt 160 against the force of the spring 162.
  • the housing 158 is at its end adjoining the centering pin 156 with an end running transversely to the centering pin 156 and to the housing 158 Passage 166 provided in the form of a continuous recess.
  • the instrument can be brought into a position in which the adjusting pin 156 runs horizontally by pivoting the guide bar 26, longitudinally displacing the clamping device 28 along the guide bar 26 and rotating the clamping jaw device 128 relative to the plate 120 of the clamping device 28. This means that the facial surface is also aligned horizontally; After removing the adjustment aid 140, the actual grinding process can now be started.
  • the adjustment aid device 168 shown in FIG. 7.
  • the adjustment aid device 168 also has a rod 170, at one end of which a spring-loaded sleeve 172 with a locking pin is arranged.
  • the other end of the rod 170 is also provided with a locking pin.
  • the adjustment aid 168 as described in connection with the adjustment aid device 138, is also inserted between the joints 146 connecting the guide bar 26 to the arms 20.
  • a further locking pin in the form of a locking pin 174 is provided on the end of the rod 170 opposite the sleeve 172, which runs parallel to the rod 170 and dips into a receiving hole 176 on the joint 146.
  • the double locking of the rod 170 at one of its two ends prevents the adjustment aid device 168 from rotating.
  • a clamping unit 178 which consists of a U-shaped holding body 180, the two legs of which are connected to the rod 170, is arranged in the central region of the rod 170.
  • a pressure plate 182 is movably guided on the U-shaped holding body 180 and can be moved in the radial direction towards or away from the rod 170 by turning an adjusting screw 184.
  • the rod 170 has a reduced cross section, the surface of the rod 170 facing the pressure plate 182 running at the height of the center line of the rod 170.
  • This area of the rod 170 which runs at the height of the center line, is curved or represents a round surface which, when the end of the instrument to be machined is clamped, rests between the rod 170 and the pressure plate 182 on the facial surface of the instrument.
  • the round surface prevents the instrument from tilting when it is clamped in the clamping unit 178 in the region of the facial surface.
  • the alignment aid 168 is inserted between the holding arms.
  • the instrument held by the clamping unit 178 has a specific position, which is determined by the type of instrument, its facial surface and the clamping point.
  • the instrument held in this way can now be “approached” by pivoting the guide bar 26, moving the clamping device 28 and rotating the clamping jaw device 128 in order to be clamped between the clamping jaws 132 and 134.
  • the instrument is held by the clamping jaw device 128 of the clamping device 28 of the clamping device 28, it has the position previously assumed with the aid of the adjustment aid device 168. After loosening the set screw 184 and removing the adjustment aid 168, the actual grinding process can begin.
  • the adjustment aids described here allow the adjustment or presetting of a variety of dental, periodontal and / or surgical instruments. All of these instruments can be clamped with the clamping device described, since their clamping jaw device is designed such that the instrument can be inserted from the side.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (9)

  1. Dispositif pour l'affûtage, la rectification et le polissage d'instruments dentaires, parodontaux et/ou chirurgicaux, le dispositif comprenant
    - un dispositif de serrage (28) pour serrer l'instrument (12) à rectifier,
    - un élément abrasif (48) avec une surface abrasive (68), monté à rotation sur un bloc supportant (38),
    - un bâti socle (14) avec un plateau tournant (32) duquel s'étend vers le haut une structure porteuse (36), montée à rotation, pour supporter le bloc supportant (38),
    - la structure porteuse (36) comprenant au moins deux bras porteurs (42) dont chacun est raccordé avec ledit bloc supportant (38) et avec un élément de liaison (54) qui joint lesdits bras porteurs (42), de façon que tous les points d'articulation desdits bras porteurs (42) sont situés sur les points corniers d'un parallélogramme, et
    - un organe de commande (74) auquel s'appuie ladite structure porteuse (36), et par lequel ladite structure porteuse (36) et, par l'intermédiaire de la dernière, le bloc supportant (38) portant l'élément abrasif (48) peuvent être pivotés pour changer l'inclinaison de la surface abrasive (68),
    caractérisé en ce que
    - un premier des deux points d'articulation desdits bras porteurs (42), avec l'élément de liaison (54), est prévu fixe par rapport au plateau tournant (32),
    - l'élément de liaison (58) pèse sur l'organe de commande (74) ou s'appuie sur celui sous l'action d'un ressort, et peut être pivoté, en tournant le plateau tournant (32), vers le haut ou vers le bas par l'organe de commande (74) par suite de la configuration de l'organe avec une voie à came, et
    - un deuxième des deux points d'articulation entre les bras porteurs (42) et l'élément de liaison (54) est prévu entre le premier point d'articulation entre les deux bras porteurs (42) et l'élément de liaison (54) et le point d'appui dudit élément de liaison (54) sur l'organe de commande (74).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de liaison (54) est muni d'un élément palpeur (62, 94) situé sur la voie à came de l'organe de commande (74), l'élément palpeur se déplaçant le long de la voie à came de l'organe de commande (74) lorsque le plateau tournant (32) est tourné.
  3. Dispositif selon la revendication 2, caractérisé en ce que ledit élément palpeur (62) est prévu d'un corps glissant ou roulant (94) en appui sur la surface de commande (92).
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que l'élément de liaison (54) est articulé avec un bras (62), qui lui-même est articulé avec un autre élément de liaison (58), qui, comme le premier élément de liaison (54), est monté en articulation sur un élément supportant (34) solidaire dudit plateau tournant (32), les quatre points de liaison (56, 60, 64) des deux éléments de liaison (54, 58) formant les point cornières d'un parallélogramme avec l'élément supportant (34) et le bras (62), et en ce que le bras (62) comprend l'élément palpeur (94) en appui sur la surface de commande (92) dudit organe de commande (74).
  5. Dispositif selon une des revendications 1 à 4, caractérisé en ce que ledit élément de commande (74) est un corps annulaire cylindrique arrangé coaxialement rélatif à l'axe de rotation de la structure porteuse (36) et dont une face avant annulaire est agencée comme surface de commande (92) pour commander le mouvement de l'élément de liaison (54) lorsque la structure porteuse (36) est tournée, le corps annulaire (74) ayant des portions de longeur axiale différente, vue dans la direction périphérique.
  6. Dispositif selon une des revendications 1 à 5, caractérisé en ce que deux bûtées (104, 106) sont prévues, qui limitent, dans les deux senses de rotation, l'angle d'orientation par lequel la structure porteuse (36) peut être tournée et qui le limitent d'une facon que la surface abrasive (68) ne vient en contact qu'avec les faces latérales et le point de l'instrument (12) à rectifier.
  7. Dispositif selon la revendication 6, caractérisé en ce que lesdites deux bûtées (104, 106) sont souples et permettent à encore tourner la structure porteuse (36) à partir d'une certaine force de rotation.
  8. Dispositif selon une des revendications 1 à 7, caractérisé en ce que le bloc supportant (38) comporte un premier élément (40) portant ledit élément abrasif (48) de manière rotative et un deuxième élément (46) relié audits au moins deux bras porteurs (42), et en ce que le premier élément (40) est supporté pivotablement au deuxième élément (46) pour la préréglage de l'inclinaison de la surface abrasive (68) de l'élément abrasif (48) et que cet élément peut être fixé dans les positions de pivotement respectives.
  9. Dispositif selon une des revendications précédentes, caractérisé en ce que la structure porteuse (36) est prévu tournant sur un élément porteur (76) et l'organe de commande (74) est prévu rigide sur le même élément (76) qui, dans ou sur le bâti socle (14), est supporté autour d'au moins un axe de manière à être déplaçable longitudinalement, ledit au moins un axe s'étendant perpendiculairement à l'axe de rotation de la structure porteuse (36), et en ce qu'un dispositif de blocage (85) est prévu pour bloquer l'élément porteur (76) et pour déclencher l'élément porteur bloqué (76).
EP91920421A 1990-11-26 1991-11-26 Dispositif pour l'affutage, la rectification et le polissage d'instruments dentaires, parodontaux et/ou chirurgicaux Expired - Lifetime EP0513283B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE4037591 1990-11-26
DE4037591 1990-11-26
DE4104824 1991-02-16
DE4104824 1991-02-16
DE4117147 1991-05-25
DE4117147 1991-05-25
PCT/EP1991/002237 WO1992009403A1 (fr) 1990-11-26 1991-11-26 Dispositif pour l'affutage, la rectification et le polissage d'instruments dentaires, parodontaux et/ou chirurgicaux

Publications (2)

Publication Number Publication Date
EP0513283A1 EP0513283A1 (fr) 1992-11-19
EP0513283B1 true EP0513283B1 (fr) 1996-04-10

Family

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Application Number Title Priority Date Filing Date
EP91920421A Expired - Lifetime EP0513283B1 (fr) 1990-11-26 1991-11-26 Dispositif pour l'affutage, la rectification et le polissage d'instruments dentaires, parodontaux et/ou chirurgicaux

Country Status (7)

Country Link
US (1) US5295328A (fr)
EP (1) EP0513283B1 (fr)
JP (1) JPH05503667A (fr)
AT (1) ATE136484T1 (fr)
DE (1) DE59107669D1 (fr)
ES (1) ES2088507T3 (fr)
WO (1) WO1992009403A1 (fr)

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US5537128A (en) * 1993-08-04 1996-07-16 Cirrus Logic, Inc. Shared memory for split-panel LCD display systems
FI95880C (fi) * 1994-04-18 1996-04-10 Laeaekintaemuovi Oy Menetelmä ja laite työkalujen, erityisesti hammashoidon käsi-instrumenttien teroittamiseksi
ATE281273T1 (de) * 1997-12-01 2004-11-15 Weissenfluh Hawe Neos Vorrichtung zum schärfen von dentalinstrumenten
JP3001055B1 (ja) * 1998-07-07 2000-01-17 和子 姫野 研磨装置
US6254464B1 (en) 1998-10-21 2001-07-03 Nakanishi Inc. Hand scaler polishing unit and hand scaler polishing apparatus
US6852014B1 (en) * 1999-12-22 2005-02-08 Roger Lee Gleason Sharpening guide for dental tools
US7112124B1 (en) * 2003-07-28 2006-09-26 Donald Naples Rotary blade sharpener
US7281969B2 (en) * 2005-05-11 2007-10-16 Donald Naples Tool sharpening and compound honing jig
CA2571693A1 (fr) * 2006-12-15 2008-06-15 Darrin Eugene Smith Etau pour affuter
CH701550B1 (fr) 2009-07-16 2012-04-13 Arnold Deppeler Dispositif et procédé d'affûtage de curettes dentaires.
US10780544B2 (en) * 2018-04-24 2020-09-22 Covidien Lp Systems and methods facilitating reprocessing of surgical instruments
KR102260159B1 (ko) * 2019-12-05 2021-06-02 동의대학교 산학협력단 스케일러 고정 및 연마 장치
CN111215974B (zh) * 2020-01-13 2021-07-06 吉林大学 一种用于手术器械养护设备
KR102286092B1 (ko) * 2020-03-25 2021-08-04 동의대학교 산학협력단 스케일러 고정 및 연마장치
JP6861330B1 (ja) * 2020-05-20 2021-04-21 高橋 俊治 歯周用器具研磨方法および研磨装置

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US1419140A (en) * 1919-08-15 1922-06-13 Richard A Hutchinson Needle-pointing machine
US1501327A (en) * 1923-06-05 1924-07-15 Pittsburgh Plate Glass Co Apparatus for surfacing plate glass
DE829709C (de) * 1948-12-11 1952-01-28 Hans Julius Keitel Dipl Ing Maehmesserschleifmaschine
US2511449A (en) * 1949-08-15 1950-06-13 Sidney H Springman Engraver's tool sharpening machine
US3879899A (en) * 1973-03-28 1975-04-29 William J Ribar Scissors sharpener
US4259814A (en) * 1979-08-30 1981-04-07 Glendo Corporation Tool sharpening machine
FR2482889A1 (fr) * 1980-05-23 1981-11-27 Collignon Julien Affuteuse de forets a bloc centreur escamotable
CH673613A5 (fr) * 1987-09-17 1990-03-30 Mikrona Ag

Also Published As

Publication number Publication date
WO1992009403A1 (fr) 1992-06-11
US5295328A (en) 1994-03-22
DE59107669D1 (de) 1996-05-15
EP0513283A1 (fr) 1992-11-19
JPH05503667A (ja) 1993-06-17
ES2088507T3 (es) 1996-08-16
ATE136484T1 (de) 1996-04-15

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