EP0513283A1 - Vorrichtung zum schärfen, schleifen und polieren von dental-, parodontal- und/oder chirurgischen instrumenten. - Google Patents
Vorrichtung zum schärfen, schleifen und polieren von dental-, parodontal- und/oder chirurgischen instrumenten.Info
- Publication number
- EP0513283A1 EP0513283A1 EP91920421A EP91920421A EP0513283A1 EP 0513283 A1 EP0513283 A1 EP 0513283A1 EP 91920421 A EP91920421 A EP 91920421A EP 91920421 A EP91920421 A EP 91920421A EP 0513283 A1 EP0513283 A1 EP 0513283A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding
- grinding
- instrument
- clamping
- support structure
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- 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, 2 or 10.
- 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, which, for example, have become blunt or jagged or can no longer be used optimally due to other influences.
- attempts are often made to regrind or resharpen valuable instruments such as sealers, 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 sealers clamped in a holder and other periodontal instruments with a motor-driven grinding wheel. With the device described there, a re-sharpening of the cutting edge of periodontal instruments is to be made reproducible, that is to say always with the same grinding angle and the same grinding pressure.
- the grinding body 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 connected to the bearing block in an articulated manner, the free ends of which 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 supporting structure protrudes from an opening in the upper side 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 member and which, when being scanned from its control surface, moves during 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 number of differently designed instruments can be sharpened, a high one Variability of the grinding movement as well as an adaptation of the grinding angle to the respective rotary movement and thus a high accuracy of the grinding process under exact adherence to the optimal grinding angle is made possible.
- the supporting structure and the control member are attached to a common holding element, the supporting structure being rotatable and the control member being arranged rigidly on the holding element.
- the holding element is in turn slidably mounted in or on the base housing. This mounting is provided such that the holding element can be displaced about at least one axis running perpendicular to the axis of rotation of the support structure. The extent of this axis is chosen such that the holding element can be moved towards and away from the clamping device. It is thus possible to move the grinding surface, without rotating the support structure, along a surface of the instrument to be machined, in which only the support structure (and the holding element) is moved linearly. Since the support structure is not rotated, the grinding surface remains inclined, which is desirable with such instruments (scissors or chisels).
- the entire supporting structure with the abrasive body can be moved even more precisely to an instrument to be machined all around or on several sides.
- the holding element With the aid of a locking device, the holding element can be locked in the selected position, so that the grinding process can now be carried out by rotating the supporting structure with the grinding surface inclination changing as a function of the angle of rotation.
- the holding element is freely movable again. Due to the movable mounting of the holding element, the supporting structure can be moved within the opening in the base housing.
- the holding element can be displaced longitudinally about two mutually perpendicular axes, which in turn each run at right angles to the axis of rotation of the supporting structure. In the case of a centered arrangement of the end of the instrument to be machined, the longitudinal displacement of the holding element along an axis is also sufficient.
- control member is not fixed to the base housing, but is rigidly attached to the holding element, which in turn ver ⁇ relative to the base housing is slidable.
- An additional essential aspect of the invention relates to the relative arrangement of the control element and the connection part controlled by it in its movement.
- the connecting part rests on the control member or rests on it in a spring-loaded manner and can be swiveled 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 implemented 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.
- the construction 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 has to 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 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 member when the support structure rotates, the contour of which is designed such that the connecting part when the Carries different pivot positions.
- a scanning element for example a sliding or rolling body
- connection is connected in an articulated manner to a handlebar, which in turn is connected in an articulated manner to a further 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 the two connecting parts with the holding part and the handlebar form the corner points of a parallelogram.
- the handlebar which runs essentially vertically and parallel to the holding part, represents the scanning element resting on the control surface of the control member.
- the parallelogram guidance of this handlebar ensures the essentially vertical alignment of the handlebar when the handlebar is lifted up and down Movements of the control surface of the control member follows.
- control element is designed as a cylindrical ring body which is arranged coaxially with the axis of rotation of the support structure and whose one end ring surface 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 which the connecting part executes during one revolution of the supporting structure are only a few degrees, which is why the link provided with the scanning element only shifts in the horizontal direction by a small distance.
- the end ring surface therefore only has to have a small width in order to ensure that the scanning element of the handlebar runs or slides over 360 ° on the end 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 through 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 lead to injuries to the patient.
- the stops are designed as latching stops, which allow the supporting structure to be turned further from 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 which is arranged in the top of the base housing in the area of its opening edge, is preferably used as the detent stop.
- 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.
- the longitudinal displacement of the supporting structure can also 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 latching 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.
- 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 completely prevented by increased friction.
- the support 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 Sharpened persons have individual differences in handling due to different fine motor skills.
- the supporting structure is prestressed with the aid 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 specific preload force.
- this spring which is advantageously arranged between one of the support arms and the holding part on which the connecting part is articulated, the pretensioning 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 pressing 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 body has the advantage that, particularly in the front area of sealers and curettes, the contact pressure of the rotating grinding body, 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 for straight width surfaces is created.
- the original contours of the instruments to be ground can be retained over a fairly long period of time despite multiple regrinding.
- an adjustment aid for the instrument is provided, with the aid of which the instrument can be aligned before being clamped in by the clamping device, specifically by clamping the end of the instrument to be machined in such a way that the facial surface of the instrument is perpendicular to the axis of rotation of the supporting structure; in this case the clamping device can be rotated and / or moved about several axes, so that the clamping device can be moved and / or rotated toward the latter with the instrument held by the adjusting auxiliary device in such a way that the instrument while maintaining it can be clamped on its grip part by defining the end to be machined.
- the invention has a clamping unit for holding the instrument at its end to be machined and can be inserted between two holding arms, between which it is arranged immovably.
- the clamping unit of the adjustment aid device When the instrument is held by the clamping unit of the adjustment aid device, its facial surface is aligned plane-parallel.
- the clamping device with which the instrument is held clamped on its working handle during the actual grinding process, can be moved towards the instrument, so that the instrument is clamped in the position into which it was previously by the adjusting auxiliary device has been brought.
- the adjusting aid is removed and the grinding process can begin.
- the auxiliary juicing device is designed as a rod that can be inserted between the holding arms, in the central area of which the clamping unit for holding the instrument is arranged at the end to be machined with the parallelism of the facial surface
- the clamping unit preferably has a fixed first clamping jaw, which extends in the longitudinal direction of the rod, and a second clamping jaw which can be moved radially to the rod and is displaceably mounted on a holding element connected to the rod; in this case the first clamping jaw is preferably provided with a round surface opposite the second clamping jaw. This round surface makes it possible to clamp instruments with the aid of the clamping unit of the adjustment aid device, the ends of which to be machined have ends which are curved to different degrees. So that's it
- the adjusting auxiliary device has pins on its ends facing the holding arms for immersion in associated receiving bores on the holding arms, with at least one end preventing rotation of the Auxiliary device two such pins and two corresponding mounting holes are arranged on the associated holding arm.
- the other end of the adjustment aid device which advantageously only carries one pin, is spring-loaded, so it can be pushed back against the force of the spring in order to disengage the pin from the associated receiving bore, in order to thus place the adjustment aid device between the Insert or remove holding arms.
- the instrument is DER by the chuck '"held art that the Facial character of the instrument is oriented plane-parallel. If the instrument is on closing held by the jig on the handle, it has already been the" right "position for grinding
- the adjustment aid is designed as a rod which can be inserted between the two holding arms and which has a marking for the optical alignment of the end of the instrument to be machined before it is clamped in the clamping device this adjustment aid is initially only a height adjustment and a middle position tioning of the end to be machined possible. The adjustment aid initially serves to hold the instrument by hand in accordance with the marking in order to then clamp it in this position with the clamping device.
- a further adjustment aid device which has a pin that resiliently presses against the facial surface to clamp it on the facial surface. If this further adjustment aid device is clamped to the end of the instrument to be machined, the pin assumes a position in space corresponding to the orientation of the facial surface. By moving the clamping device, the instrument can now be brought into a position in which the pin runs horizontally. Now the plane parallelism of the facial surface is given, so that the further adjustment aid device can be removed and the grinding process can be started.
- the Justierany Einspann ⁇ be used device.
- a clamping device with a clamping jaw device is used, the clamping jaws of which grip around the instrument on both sides of the working handle, the space between the clamping jaws being essentially open on all sides.
- the working handle of the instrument whose position in space is determined by the previously used adjustment aid device, can be approached until it is immersed between the clamping jaws, whereupon they are moved towards one another in order to move the instrument between them them keep jamming.
- the clamping jaws are advantageously provided with profiled rubber coatings on their mutually facing side surfaces in order to increase the "grip".
- a bracket is rotatably mounted on the two holding arms, between which the adjustment aid device is also used, on which the clamping device can be guided in a longitudinally displaceable manner and can be fixed in a clamped manner.
- the clamping device can be rotated about a horizontal axis.
- the longitudinal displaceability of the clamping device relative to the bracket allows the clamping device to move further.
- the clamping device itself advantageously consists of a plate mounted on the bracket via rollers, on which the clamping jaw device is rotatably mounted.
- the displaceability of the clamping device along the strap and the rotatability of the tensioning means back to the chuck or the clamping jaw in the device can require bring each • 'derliche position for clamping the preset by means of the Justieragisvorraum instrument.
- the 3-wing is advantageously a straight rod profile with a rectangular cross-section, along which the clamping device is displaceably guided.
- the rod profile is connected at its ends to the holding arms via two radially projecting arms.
- the bracket is preferably on between the pivot points the two holding arms are semicircular; is by this embodiment of the bracket of the clamping point at which the jig on "Ar ⁇ beitsgriff engages the instrument, independent of the position of the jig relative to the bracket is always at the same distance to be processed Instru ⁇ ment end.
- These semi-circular configuration of the bracket also has the advantage that the instrument is rotated around the "grinding center” by moving the clamping device along the bracket, namely that the clamping device is rotated by moving along the bracket around the point at which the end of the instrument to be machined is adjusted by the adjusting device has been aligned, since this is also inserted between the pivot points of the bracket on the two holding arms and bears its clamping device or optical marking in the middle.
- the bracket is located between the pivot points on the two holding arms U- for i g, the distance between the "grinding center” and the clamping point changes as a result of the clamping device being moved along the bracket.
- Fig. 1 is a perspective view of the machine with GRINDER ⁇ at an adjoining to abrasive grinding tool body
- 2 shows a side view of the grinding machine according to FIG. 1, the grinding body being in its rest position
- FIG. 3 likewise a side view of the grinding device, the supporting structure with the grinding body being rotated by 90 ° with respect to the illustration according to FIG. 2,
- FIG. 4 shows a front view of the grinding machine according to FIG. 3,
- FIG. 6 is a plan view of the grinding machine with the support structure removed and the turntable removed
- FIG. 7 shows a plan view of a first embodiment of an adjustment aid for aligning the end of an instrument to be ground
- Fig. 9 and 10 show a side view and a top view, partly in section, of a further adjustment aid device.
- 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 the top 16 of which two upstanding arms 18 protrude. On the arms 18 are horizontal tal and parallel to the top 16 of the base housing 14 extending boom 20 attached. Between the ends of the parallel brackets 20, a top bracket 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 longitudinally displaceable clamping device 28 for later clamping of the tool 12 to be machined is 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 more detail later, extends coaxially to the horizontal pivot axis of the holding bracket 22 and is non-rotatably coupled to one of the arms 20 of the arms 18, so it rotates when the holding bracket 22 is pivoted not with this with.
- 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 can be rotated about axes 52 on the bearing block 38.
- 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 core 54 and the support arms 42.
- the point of connection 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 can be pivoted about an axis 60 Holding part 34 are articulated.
- 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 supporting 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 fixed in an assumed longitudinal displacement position or the frictional force when the holding plate 76 is moved can be 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).
- the turntable 32 and thus the holding part 34 and the supporting structure 38 are rotatably supported on the holding plate 76, and the cylinder body 86 can be relative to the holding plate 76 by means of a locking screw 90 which protrudes upward from the rotating plate 32 establish.
- 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 ring surface 92 when the turntable 32 is rotated (when the turntable 32 is rotated in this way, together with the upstanding holding part) 34 and the support structure 38, the ring body 74 cannot rotate as it is rigidly attached to the holding plate 76).
- the vertical link 62 By stepping the upper end of the ring body 74 facing the turntable 32, the vertical link 62 performs 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, the end ring surface 92 thus the control surface of the ring body 74 is. So that the roller 94 is always in contact with the end ring surface 92, one of the lower further horizontal links 58 of the horizontal parallelogram is prestressed downward by a tension spring 96 acting on the cylinder body 86, so that the roller 94 rests 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 scaling which, when the two bearing block elements are pivoted relative to one another, pivots relative to a pointer element 100 which is rigid on the second La ⁇ gerblockelement 46 is attached.
- 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.
- the stop ribs 104 cooperate with a detent ball 106 arranged on the top 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 support 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 rotary end positions (such a limit position is shown in FIG Figure 5 can be seen in plan view).
- the detent 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 is to 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 rest on 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 and carrying a fixed clamping jaw 132.
- a movable clamping jaw 134 is provided which, when a screw 136 is rotated, can be moved towards and away from the fixed clamping jaw 132.
- 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 perform 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 processed can be positioned or aligned before the clamping by the clamping device 28 such that the special surface of the instrument 12 plane-parallel, ie runs at right angles to the axis of rotation of the supporting structure.
- 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 dive 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 shifts in the axial direction of the rod 138. is bar and on which the pin 142 is arranged.
- the movement of the sleeve 148 is shown in FIG. 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 a notch goggle 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 adjusting aid 140 consists of an adjusting pin 156, to which an essentially cylindrical housing 158 extending radially to the centering pin 156 is connected.
- a bolt 160 is guided in a longitudinally displaceable manner in the housing 158 and is biased in the direction of the centering pin 156 by means of a spring 162.
- the bolt 160 protrudes out of the housing 158 on 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 By pivoting the guide bar 26, longitudinally sliding 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 ' , the instrument can be brought into a position in which the adjusting pin 156 is horizontal runs. The facial surface is thus also aligned horizontally; After removing the adjustment aid 140, the actual grinding process can now be started.
- the adjustment aid device 168 also has a rod 170, on one of which a rod 170 The other end of the rod 170 is also provided with a locking pin, and the adjustment aid 168, as described in connection with the adjustment aid device 138, between which the guide strips 26 are located 'with the booms 20 ver ⁇ used binding joints 146th order for employed Adjustment aid 168 to prevent rotation thereof around the rod 170, 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 is arranged, which consists of a U-shaped holding body 180, the two legs of which are connected to 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 surface 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 between the rod 170 and the pressure plate 182, bears against 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 instrument To adjust the instrument, its end to be machined is first clamped between the pressure plate 182 and the rod 170 in the area of its section 186 by the clamping unit 178, as explained above. At this time, 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, displacing 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 when the instrument is held by the clamping jaw device 128 of the clamping device 28, the instrument has the position previously assumed with the aid of the adjustment aid device 168. After loosening the set screw 184 and removing the adjustment auxiliary device 168, the actual grinding process can be started.
Landscapes
- 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)
Description
Claims
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 (de) | 1990-11-26 | 1991-11-26 | Vorrichtung zum schärfen, schleifen und polieren von dental-, parodontal- und/oder chirurgischen instrumenten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0513283A1 true EP0513283A1 (de) | 1992-11-19 |
EP0513283B1 EP0513283B1 (de) | 1996-04-10 |
Family
ID=27201919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91920421A Expired - Lifetime EP0513283B1 (de) | 1990-11-26 | 1991-11-26 | Vorrichtung zum schärfen, schleifen und polieren von dental-, parodontal- und/oder chirurgischen instrumenten |
Country Status (7)
Country | Link |
---|---|
US (1) | US5295328A (de) |
EP (1) | EP0513283B1 (de) |
JP (1) | JPH05503667A (de) |
AT (1) | ATE136484T1 (de) |
DE (1) | DE59107669D1 (de) |
ES (1) | ES2088507T3 (de) |
WO (1) | WO1992009403A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP0919327B1 (de) * | 1997-12-01 | 2004-11-03 | HAWE NEOS DENTAL Dr. H. V. WEISSENFLUH AG | Vorrichtung zum Schärfen von Dentalinstrumenten |
JP3001055B1 (ja) * | 1998-07-07 | 2000-01-17 | 和子 姫野 | 研磨装置 |
KR100370879B1 (ko) | 1998-10-21 | 2003-02-05 | 가부시키가이샤 나카니시 | 핸드 스케일러 연마 유닛 및 핸드 스케일러 연마 장치 |
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 (en) * | 2006-12-15 | 2008-06-15 | Darrin Eugene Smith | Honing jig |
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 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (de) * | 1987-09-17 | 1990-03-30 | Mikrona Ag |
-
1991
- 1991-11-26 JP JP3518671A patent/JPH05503667A/ja active Pending
- 1991-11-26 ES ES91920421T patent/ES2088507T3/es not_active Expired - Lifetime
- 1991-11-26 AT AT91920421T patent/ATE136484T1/de not_active IP Right Cessation
- 1991-11-26 WO PCT/EP1991/002237 patent/WO1992009403A1/de active IP Right Grant
- 1991-11-26 EP EP91920421A patent/EP0513283B1/de not_active Expired - Lifetime
- 1991-11-26 US US07/877,169 patent/US5295328A/en not_active Expired - Fee Related
- 1991-11-26 DE DE59107669T patent/DE59107669D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9209403A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5295328A (en) | 1994-03-22 |
WO1992009403A1 (de) | 1992-06-11 |
EP0513283B1 (de) | 1996-04-10 |
ES2088507T3 (es) | 1996-08-16 |
JPH05503667A (ja) | 1993-06-17 |
DE59107669D1 (de) | 1996-05-15 |
ATE136484T1 (de) | 1996-04-15 |
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