JPH10295704A - Polisher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To define the tip of a scaler to polish an object in a desired angle, by defining a guide means into a desired inclination angle by an angle defining means and moving a polishing means along the guide means. SOLUTION: A knob 33a and a stopper 35 of a protractor 31 erected on the plate surface 5a of a surface plate 5 are operated to release fixation of a bar member (guide means) 21 to align an index to the scale of the protractor. Next, the bar member 21 is fixed again by the knob 33a and the stopper 35. The bar member 21 in that condition is inserted through a long hole 6a of a base plate 6 to place the base plate 6 on the surface plate 5 before a polishing member is movably attached to the bar member 21. Further, a hand rest 71 is laid on the base plate 6. A confirming means is laid on the upper face of the edge of the scaler 9, a hand holding the scaler 9 is supported by the upper end 71a of the hand rest 71 and an object is polished by first and second grinders of the polishing means 4 in that order. Thus the object can be polished in a desired angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus for polishing small dental instruments.

[0002]

2. Description of the Related Art For dental treatment, small dental instruments having various blades are used. Among dental treatments, in particular, small dental instruments such as a scaler are often used in treatments such as removal (scaling) of calculus and plaque and lubrication of root surfaces (root planing).

As shown in FIG. 1, a scaler 9 has a handle 9a that is held by an operator, a shank 9b extending from the handle 9a, and a blade 9c formed at the tip of the shank 9b.
Consists of The scaler 9 has a shape extending from the shank 9b to the blade portion 9c in various shapes such as a linear simple shape or a complicated shape bent in three directions in order to correspond to the shape and site of the tooth to be treated or various treatment contents. Have been. As such a scaler 9, various shapes such as a sickle, a hoe, a chisel, and a curette are prepared.

[0004] The blade portion 9c is formed by an upper surface 9d formed so that a predetermined range is excavated, and side surfaces 9e on both sides of the upper surface 9d, and a ridge line between the upper surface 9d and the side surface 9e becomes a cutting edge 9f. . In dental treatment, it is extremely important to use a scaler having a sharp blade in order to efficiently perform scaling and root planing to enhance the treatment effect. Normally, as shown in FIG. 2, when the angle α formed by the upper surface 9d and the side surface 9e of the blade is 70 to 80 degrees, preferably 78 degrees, the blade is sharp and sharp. .

[0005]

The above-mentioned scaler removes hard tartar and grinds the tooth root surface, so that the sharpness of the blade is immediately reduced. Therefore,
Prior to scaling or root planing, the sharpness of the scaler blade is checked and the blade is polished. Furthermore,
Even during use, if the sharpness of the scaler decreases, polishing is performed as needed, and treatment is always performed with the blade being sharp.

When the above polishing is performed, for example, there are a case where the polishing is performed manually and a case where the polishing is performed electrically. If manually,
Hold the scaler in one hand, hold the whetstone in the other hand,
Fix the scaler and move the grindstone to sharpen, or
Polishing is performed by fixing the grindstone and moving the scaler to sharpen it. Such manual polishing is simple and can be easily performed during surgery. However, in this case, it is extremely difficult to polish a fixed side surface while maintaining the angle between the upper surface and the side surface of the blade of the scaler at an appropriate angle of 70 to 80 degrees. That is, manual polishing is a work requiring skill, and individual differences appear significantly. Further, when the same scaler is used by many persons, it is extremely difficult to maintain the same polishing angle.

On the other hand, in the case of electric driving, for example, an electric polishing apparatus is used. The electric polishing apparatus includes fixing means for fixing the scaler, and a rotating grindstone. The rotating grindstone is a disk-shaped grindstone that is rotated by an electric motor, and is polished by pressing a disk surface of the rotating grindstone against a blade portion of a scaler fixed to fixing means. At this time, since the angle of the surface of the rotary grindstone with respect to the upper surface of the blade of the scaler fixed to the fixing means is set to a fixed angle (70 degrees or 80 degrees), it is possible to obtain a cutting edge with a fixed angle. In other words, in the case of the electric type,
A sharp edge can be obtained without requiring skill. However, in this case, the grinding wheel automatically rotates at high speed,
The blade of the scaler may be polished too much, which may damage the original shape of the scaler. Further, the polishing angle cannot be set to a value other than the predetermined angle, and the degree of freedom in selecting the polishing angle is low. Further, since setting the scaler requires time and effort, it is not suitable for the purpose of easily polishing the scaler during surgery. And the apparatus itself is large-scale and very expensive. In addition, since the electric components are built in, the entire device cannot be sterilized.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polishing apparatus which can solve the above-mentioned problems in polishing small dental instruments and can easily grind the cutting edge of the small dental instruments at a desired angle.

[0009]

In order to achieve the above object, a polishing apparatus according to the present invention comprises: a guide extending in one direction; an angle defining means capable of fixing the guide at a desired inclination angle; And a polishing means which is movable in the one direction and a holding means which holds the object to be polished at a desired angle.

[0010] The polishing means may be combined with the first and second grinding wheels to form a prism-shaped grinding wheel having a through hole.
And a connecting member fitted to both ends of the first and second grinding wheels and having an insertion hole through which the guide means is inserted. Furthermore, it is preferable that the insertion hole is set smaller than the through hole of the prismatic grindstone obtained by combining the first and second grindstones.

Further, it is preferable that the guide member is configured to be a rod having a polygonal cross section. Furthermore,
It is preferable that the first whetstone and the second whetstone are whetstones having different roughness. Furthermore, it is preferable that the polishing apparatus of the present invention has a configuration in which the holding means includes a substrate on which the holding means is movably mounted along a plate surface.

Further, it is preferable that the holding means is a handrest having a guide member for holding the upper surface of the blade to be polished at the desired angle with respect to the plate surface of the substrate. Furthermore, it is preferable that the holding means is a holder that holds the object to be polished and holds the upper surface of the blade to be polished at the desired angle with respect to the plate surface of the substrate.

It is preferable that the polishing apparatus of the present invention further comprises a confirmation means for confirming the orientation of the upper surface of the blade of the object to be polished when setting the object to be polished on the holding means. .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a polishing apparatus according to the present invention will be described with reference to FIGS. The polishing apparatus 1
As shown in FIG. 3, a guide means 2, an angle defining means 3, a polishing means 4, a surface plate 5, a substrate 6, and a holding means 7 are provided. The guide means 2 is for movably attaching a polishing means 4 described later, and uses a bar 21. Bar 21
Has an attachment portion (not shown) for attaching to the angle defining means 3 described later at one end, and has a male screw portion 21a at a predetermined intermediate position. The cross-sectional shape of the bar 21 is not particularly limited as long as it can guide the polishing means 4. For example, as shown in FIG. 3, a rod 21 having a circular cross section or a rod 21 having a polygonal cross section as shown in FIG. When the cross section of the bar 21 is a polygon such as a triangle or a quadrangle, the rotation of the polishing means 4 around the axis of the bar 21 can be restricted. Therefore, a change in the contact state between the polishing means 4 and the object to be polished (the scaler 9) during polishing can be suppressed, and the polishing precision can be improved. Therefore, in particular, when the polishing accuracy is to be increased, it is preferable that the cross-sectional shape of the bar 21 be a polygon.

The angle defining means 3 includes a protractor 31, a fastener 3
2 and a stopper 35. The protractor 31 measures the inclination angle of the bar 21, and a commonly used semi-disk protractor is used. Protractor 31
The bar 21 is rotatably mounted along the surface of the protractor 31 at the origin. At this time, one protractor 31 may be used, but in order to stabilize the erecting means 3 when standing, two protractors 31 are used to sandwich the bar 21 between the two protractors 31. Is preferred.

The fastener 32 is for attaching the bar 21 to the protractor 31, and as shown in FIG.
And a nut 34 screwed with the screw 33. The screw 33 is inserted through insertion holes 31a, 31a formed at the origin of the protractor 31 and a communication hole 21b, which is a mounting portion for the bar 21, and a nut 34 is screwed to one end. Therefore, when the screw 33 is loosened, the bar 21 rotates about the origin of the protractor 31 and conversely, the screw 3
3 can be fixed at a desired position by tightening.

The stopper 35 includes a holding member 36 and a wing nut 38 as shown in FIG. The holding member 36 includes a holding plate 36 a having a through hole (not shown) slightly larger than the outer diameter of the rod 21, and a holding plate 36.
and a side plate 36b extending in a direction perpendicular to the holding plate 36a from the side of the side a. Here, a pointer 37 is attached to an end of the side plate 36b.

The wing nut 38 is connected to the external thread 21 of the rod 21.
a with the screw 33 and the nut 34
At a desired angle. The stopper 35 includes a holding plate 36.
a, the rod 21 is inserted into the through hole,
The protractors 31 and 31 are disposed between 6b and 36b. Then, the wing nut 38 screwed into the male screw portion 21a is disposed at a position where it comes into contact with the holding plate 36a.

Since the stopper 35 is constructed as described above, when the wing nut 38 is tightened, the holding plate 36a
Is pressed against the peripheral portions 31b, 31b of the protractors 31, 31, and the bar 21 is fixed at a desired inclined position. Here, the pointer 37 indicates that the stopper 35 is the peripheral portion 3 of the protractor 31.
In the state where it is arranged in 1b, it is arranged at a position overlapping with the axis of the bar 21 on the side plate 36b when viewed from a direction perpendicular to the surface of the scale plate of the protractor 31. For this reason, if the pointer 37 is set to the desired angle scale 31c, the bar 21 also has the same inclination angle.

The polishing means 4 includes, as shown in FIG.
1 is a grindstone that is movably attached to 1 and polishes the blade of the scaler 9. The polishing means 4 includes a first grindstone 41 and a second grindstone 41.
A grinding wheel 42 and connection caps 43 are provided.
As shown in FIG. 7, the first grindstone 41 and the second grindstone 42 are prism-shaped grindstones having concave grooves 41a and 42a.
Here, in the first grindstone 41 and the second grindstone 42, the surfaces on the back side of the concave grooves 41a, 42a are the main ground surfaces 41b, 4b.
2b. Then, the first grinding wheel 41 and the second grinding wheel 4
Numeral 2 is a substantially prismatic grindstone that is arranged to face each other and has a through hole at the center. By the way, the main grinding surfaces 41b, 4
The surfaces other than 2b, that is, both side surfaces orthogonal to the grinding surfaces 41b and 42b may be flat surfaces, but as shown in FIG. 7, the concave surfaces 41c and 42c and the convex surfaces 41d and 42b.
It is preferable to set d. This is because, in a scaler, the tip of a protruding blade or a bent dent may be polished, and in such a case, it is preferable that the grinding surface of the grindstone has a concave surface or a convex surface. .

The first grindstone 41 and the second grindstone 42 are not particularly limited as long as they can grind the blades of a scaler. For example, alkansus stone, Indiana stone, various synthetic grindstones, etc. Is used. It is preferable that the first grindstone 41 and the second grindstone 42 have different roughnesses. That is, for example, if the first grindstone 41 is used for rough rough cutting, the second grindstone 42 is used for fine finishing. As described above, if the roughness of the grindstone is changed between the first grindstone 41 and the second grindstone 42, only the direction of the polishing means 4 is changed.
The roughness of the whetstone can be easily changed.

The connection cap 43 is a molded body made of synthetic resin, and has a concave portion 43a having a shape along the outer shape of a prism-shaped grindstone formed by arranging a first grindstone 41 and a second grindstone 42 to face each other.
And an insertion hole 43b. Here, the insertion hole 43
As for b, its plan view shape is set to be approximately the same shape and the same size as the cross-sectional shape of the bar 21. The connection cap 43 is
The concave portion 43a is fitted to both ends of a prism-shaped grindstone composed of the first grindstone 41 and the second grindstone 42, thereby forming the first grindstone.
The grindstone 41 and the second grindstone 42 are integrated.

As described above, the first grinding wheel 41 and the second grinding wheel 4
The polishing means 4 formed integrally with the connecting cap 43 by the connecting cap 43 is movably attached to the bar 21 by inserting the bar 21 into the center through hole and the insertion hole 43b of the connecting cap 43. It is preferable that the cross-sectional area of the central through-hole of the prismatic grindstone composed of the first and second grindstones be set larger than the cross-sectional area of the insertion hole 43b of the connection cap 43. With this setting, the polishing means 4
Only the portions of the connection caps 43 and 43 come into contact with the bar 21 and the inner surfaces of the first and second grindstones are prevented from coming into contact with the bar 21. For this reason, even if the polishing means 4 is slid along the bar 21, wear of the bar 21 is suppressed. Further, when the polishing means 4 is removed from the bar material 21, only the connecting caps 43, 43 are in contact with the floor surface, and the grinding surface of the grindstone does not directly contact the floor surface. Can be stored. Further, the polishing means 4 alone can be used as a manual grindstone.

The platen 5 is provided with a protractor 3
1, 31 are erected. In the polishing apparatus 1, the board surface 5
“a” is a reference plane when the bar 21 is set at a desired inclination angle. The substrate 6 is a plate which is removably disposed on the surface plate 5 and on which a holding means 7 described later is movably mounted. The substrate 6 is provided with a long hole 6a at a predetermined position, and is provided with legs 61 at four corners. I have.

The long hole 6a is a hole having a rectangular shape in plan view, into which the bar 21 is inserted, and its longitudinal direction is
In the direction of movement. The legs 61 arrange the substrate 6 at a predetermined height above the surface plate 5 in parallel with the surface 5a. At this time, the height of the substrate 6 is
It is preferable that the height is set higher than the height of 1. As described above, when the substrate 6 is disposed at a position higher than the protractor 31,
The protractor 31 does not protrude above the substrate 6 and the holding means 7 described later
Does not become a hindrance when moving on the substrate 6.

As the holding means 7, any type can be used as long as it can hold the scaler at a predetermined angle. For example, a handrest that can fix a hand holding the scaler is used. can give. The shape of the hand rest is not particularly limited, for example,
As shown in FIG. 3, a cylindrical handrest 71 in which a part of a peripheral wall is cut out is used.

The handrest 71 is placed on a hand holding the scaler 9 at the upper edge 71a, and is stabilized, so that the tip of the scaler 9 protrudes from the notch 71b. Here, silicone rubber may be attached to the upper edge portion 71a as a non-slip. In the hand rest 71, as shown in FIG.
A guide member 72 for holding the scaler 9 at a predetermined angle is attached.

The guide member 72 serves as a guideline 73 for adjusting the angle of the scaler 9 held by the hand to a desired angle.
and a mounting member 74 for mounting the plate 73 at a predetermined position on the edge of the notch 71b of the handrest 71. Here, guideline 73
a is determined as follows, for example. First, for the scaler 9, the angle between the axis of the handle and the upper surface of the blade is determined in advance. Then, the upper surface of the blade, for example,
The angle of the handle axis when held parallel to the surface 5a of the surface plate 5 is determined. Then, a guide line 73a corresponding to the angle is drawn on the plate 73. The above operation is performed for several types of scalers, and several guidelines 73a corresponding to each scaler are drawn.

Guideline 73 drawn in this way
When the axis of the handle of the scaler is aligned with the a of the scaler with the upper surface of the blade facing upward, the scaler is maintained at a desired angle (the upper surface of the scaler blade is parallel to the surface 5a of the surface plate 5). Can be. By the way, when holding the scaler, if the upper surface of the blade is not directed upward, even if the axis of the handle of the scaler is aligned with the guideline 73a, the upper surface of the blade of the scaler may not be parallel to the surface 5a of the surface plate 5. difficult. However, since the upper surface of the scaler blade is very small, it may be difficult to accurately determine the orientation. In such a case, in the polishing apparatus 1, if a checking means for checking the orientation of the upper surface of the blade is additionally used, the upper surface of the blade of the scaler can be more accurately placed on the surface plate 5.
Is preferable because it can be made parallel to the board surface 5a.

As shown in FIG. 9, the checking means 10 is a small piece member on the surface of which a horizontal line 10b horizontal to the lower end 10a and a vertical line 10c perpendicular to the lower end 10a are drawn. The lower end 10a is magnetized. Therefore, the checking means 10 can be easily attached to the upper surface 9d of the blade of the scaler 9 by magnetic force, and can be easily removed. In addition, scaler 9
Is made of a non-magnetic material to which a magnet is not attached, in the checking means 10, an adhesive having an adhesive strength enough to be detachable from the upper surface 9d of the blade is applied to the lower end 10a, and the blade of the scaler 9 is Is preferably temporarily fixed to the upper surface 9d.

When the checking means 10 as described above is mounted on the upper surface 9d of the blade of the scaler, the direction of the upper surface 9d of the blade can be checked by the horizontal line 10b and the vertical line 10c. The setting of the surface 5a of the surface plate 5 in parallel can be performed more accurately. As another mode of the checking means, there is a checking means 11 as shown in FIG.

The checking means 11 comprises a horizontal plate 11a, a vertical plate 1
1b and mounting means 11c. Horizontal plate 11a
Is a plate placed along the upper surface 9d of the scaler 9. The vertical plate 11b is a plate erected perpendicularly to the horizontal plane of the horizontal plate 11a. The mounting means 11c includes a horizontal plate 11a.
Is an annular member having elasticity attached to the surface opposite to the side on which the vertical plate 11b is erected, and by inserting the confirmation means 11 into the blade portion 9c of the scaler, the checking means 11 is turned to the upper surface 9d of the blade of the scaler 9. It is to be attached to.

As described above, the checking means 11 includes the mounting means 1
Since 1c has elasticity, it can be easily attached to the scaler 9 and can be easily removed.
The checking means 11 as described above is provided on the upper surface 9 of the scaler blade.
d, the orientation of the upper surface 9d of the blade can be confirmed by the horizontal plate 11a and the vertical plate 11b, and the upper surface 9d of the blade of the scaler 9 and the surface 5a of the surface plate 5 Can be done more accurately.

The size of the checking means 10 and 11 may be arbitrarily set so that the direction of the upper surface 9d of the blade can be easily checked. The procedure for polishing the scaler 9 using the polishing apparatus 1 configured as described above will be described below. First, platen 5
In the protractor 31 erected on the board 5a, the knob 33a is turned to loosen the screw 33. Stopper 3
Loosen the wing nut 38 of No. 5 to release the fixation of the bar 21. Then, the bar 21 is rotated, and the pointer 37 attached to the stopper 35 is set to a desired angle scale of the protractor 31.
For example, it is set to 78 degrees. In this state, the screw 33 and the wing nut 38 are tightened. Then, screw 33 and nut 3
4 clamps the rod 21 and the wing nut 38
Presses the pressing member 36 against the peripheral portion 31b of the protractor 31 (see FIGS. 5 and 6). As a result, the bar 21 is
It is fixed at an angle of 78 degrees with respect to a.

Next, the rod 21 is inserted into the long hole 6a of the substrate 6, and the substrate 6 is disposed on the surface plate 5. Then, the polishing means 4 is movably attached to the bar 21, and the hand rest 71 is placed on the substrate 6. Next, the surgeon mounts the checking means 10 on the upper surface of the blade of the scaler 9, checks the orientation of the upper surface of the blade, and holds the scaler 9 with one hand with the upper surface of the blade facing upward. Thereafter, the confirmation means 10 is removed. Then, the hand holding the scaler 9 is placed on the upper edge 71a of the handrest 71 to stabilize it. At this time, the axis of the handle of the scaler 9 is aligned with a predetermined guide line 73a of the guide member 72 (see FIG. 8). By doing so, the upper surface of the blade of the scaler 9 becomes parallel to the surface 5 a of the surface plate 5. Then, the cutting edge of the scaler 9 is brought into contact with the ground surface of the first grindstone 41 of the polishing means 4. In this state, the blade of the scaler 9 is polished by holding the polishing means 4 with the other hand and sliding along the bar 21.

In the polishing apparatus 1, the bar 21 is moved by the protractor 31 to a desired angle (78) with respect to the surface 5 a of the surface plate 5.
Degree). Then, since the polishing means 4 moves along the bar 21, the ground surface of the polishing means 4 also slides at 78 degrees with respect to the board surface 5a. For this reason, when the scaler 9 holding the upper surface 9d of the blade in parallel with the board surface 5a is brought into contact with the polishing means 4, the side surface 9e of the blade is polished at 78 degrees to the upper surface 9d to obtain a sharp blade edge 9f. (See FIGS. 1 and 2).

Here, in the polishing means 4, the coarseness of the eyes can be changed, for example, if the first grindstone 41 is used for rough cutting, and the second grindstone 42 is used for fine finishing. Therefore, when the rough grinding is completed with the first grindstone 41, the finish grinding can be performed only by setting the contact surface to the second grindstone 42 side. Further, the polishing means 4 includes a bar 21.
Since several types of grindstones with different grain sizes are prepared, the grindstones can be easily replaced depending on the application. At this time, the polishing means 4 includes the connecting cap 4
3 and 43 cover both end portions of the prism-shaped grindstone composed of the first grindstone 41 and the second grindstone 42, and have a shape bulging outward from the grinding surface of the grindstone. 4
Is removed from the guide rod 21 and left, the ground surface of the grindstone does not directly contact the floor surface, which is sanitary. The polishing means 4 can be freely assembled and disassembled by attaching and detaching the connection caps 43, 43.
The whetstone and the second whetstone may be replaced with a third whetstone and a fourth whetstone having different eye roughness from those of the first and second whetstones, and may be reassembled.

Further, since the handrest 71 is movable on the substrate 6, when polishing a scaler having a curved portion, the handrest 71 is moved in accordance with the curved shape of the scaler to thereby adjust the curved portion. The cutting edge can also be easily polished at a defined angle. Further, in the polishing apparatus 1 as described above, in order to further stabilize the scaler 9 held by the hand during polishing,
The mounting beam may be spread over a predetermined position of the notch 71b of the handrest 71. The placement beam is used for placing the scaler 9 on a predetermined portion of the scaler 9 with the operator gripping the scaler 9 and aligning the axis of the handle of the scaler 9 with the predetermined guideline 73 a of the guide member 72. To help maintain the desired angle. In other words, the surgeon places the hand holding the scaler 9 on the upper edge 71a of the handrest 71 and places the vicinity of the tip of the scaler on the placement beam so that the scaler 9 can be stably moved to the desired angle. Can be held.

As another mode of the polishing apparatus 1, when a hand rest 75 having an instrument receiver 76 as shown in FIG. 11 is used instead of the hand rest 71, the scaler can be stably held at a predetermined angle. It is preferable because the property is improved. Here, the polishing apparatus 1 employing the hand rest 75
Is a polishing apparatus 1 employing a hand rest 71.
There is no change in the parts other than the hand rest 71.

The handrest 75 is a substantially cylindrical shape in which a part of the peripheral wall is cut out.
It has. The instrument receiver 76 includes a beam 77 that extends over a predetermined position of the notch 75b, and a receiving member 78 that is placed on the beam 77. Here, the receiving member 78
Is a member on which a part of the handle of the scaler 9 held by the operator's hand is placed. At this time, similarly to the case where the angle of the guide line 73a of the hand rest 71 is determined, the angle of the handle member 78 becomes the angle of the axis of the handle where the upper surface of the blade is parallel to the surface 5a of the surface plate 5 for a predetermined scaler. Is determined by seeking Receiving member 78
In order to support several types of scalers, it is preferable to determine the angle of the handle at which the upper surface of the blade is parallel to the board surface 5a in each scaler, and to install a plurality of the angles.

By mounting the scaler 9 on the receiving member 78, the scaler 9 can be maintained at a desired angle (the upper surface of the blade of the scaler is parallel to the surface 5a of the surface plate 5). The handrest 75 places the hand holding the scaler 9 on the upper edge portion 75a, stabilizes it, and places a part of the handle of the scaler on the receiving member 78. At this time, as in the case of the polishing apparatus 1, it is preferable to attach the checking means 10 to the upper surface 9d of the blade of the scaler, check the orientation of the upper surface 9d of the blade, and turn the upper surface 9d of the blade upward. By installing the scaler in this manner, the upper surface of the blade of the scaler 9 becomes parallel to the surface 5a of the surface plate 5. Then, the cutting edge of the scaler 9 is brought into contact with the ground surface of the first grindstone 41 of the polishing means 4.
In this state, by holding the polishing means 4 with the other hand and sliding along the bar 21, the cutting edge of the scaler 9 can be polished to a desired angle. Note that the hand rest 75 is also movable on the substrate 6. Further, silicone rubber may be attached to the upper edge 75a as a non-slip.

Further, as still another embodiment of the polishing apparatus 1,
Instead of the handrest 71, a holding table 79 as shown in FIG. 12 may be used. Here, still another aspect of the polishing apparatus 1 employing the holding table 79 is the same as that of the polishing apparatus 1 employing the hand rest 71 except for the portions other than the hand rest 71. The holding table 79 has, in particular, an upper surface of the blade,
This is used when polishing a scaler that is not inclined with respect to the axis of the handle, for example, a chisel scaler, and has a mounting groove 79a.

The mounting groove 79a is provided at the lower end 79 of the holding table 79.
It is provided in parallel to b. The holding table 79 is movably arranged on the substrate 6. And the mounting groove 79a
In addition, a free-form scaler 91 is used, and the upper surface of the blade is
So that it is parallel to At this time, the scaler 91 is fixed by fixing means (not shown), or is held by an operator by hand. Next, the cutting edge of the scaler 91 installed as described above is brought into contact with the ground surface of the first grindstone 41 of the polishing means 4, and in this state, the polishing means 4 is
1 along the scaler 91.
Is ground to a desired angle.

By increasing the width of the mounting groove 79a, the holding table 79 can easily mount, fix and hold a thing having a thick handle such as an ultrasonic scaler. Therefore, the polishing apparatus of the present invention can be used for polishing an ultrasonic scaler having a thick handle. Further, as another embodiment of the polishing apparatus 1, a holding means 8 as shown in FIG. Here, another aspect of the polishing apparatus 1 employing the holding means 8 is the same as that of the polishing apparatus 1 employing the hand rest 71 except for the portions other than the hand rest 71. And a detailed description is omitted.

The holding means 8 is for holding the scaler 9 at a predetermined angle, and includes a holder 81, a fixing member 82 for fixing the holder 81, and a pedestal 8 on which the fixing member 82 is mounted.
5 is provided. The holder 81 includes a grip portion 81a that grips the scaler 9 and a rod 81b.

The fixing member 82 includes an adapter 83 having a ring portion 83a and a rod 83b attached to the ring portion 83a, and a rotary cross clamp 84. The pedestal 85 includes a column 86 and a base 87 to which the column 86 is attached. The base 87 has a built-in lock mechanism (not shown) of a magnet type or a sucker type (however, when the substrate 6 is made of a non-magnetic material not attached to a magnet), and is operated by operating the lock mechanism. The entire holding means 8 can be fixed at a desired position on the plate surface 6b. When the lock mechanism is released, the holding means 8 becomes movable on the plate surface 6b.

The holder 81 includes a rod 81b and an adapter 8
3 and is rotatable about the axis of the rod 81b, and is fixed at a desired position.
In the adapter 83, the rod 83b is fitted into one clamp 84a of the rotary cross clamp 84, is rotatable around the axis of the rod 83b, and is fixed at a desired position.

In the rotary cross clamp 84, one clamp 84a is orthogonal to the other clamp 84b. The one clamp 84a is rotatable around an axis perpendicular to the other clamp 84b, and is fixed at a desired position. Also, the other clamp 8
4b is fitted into the support column 86, is rotatable around the axis of the support column 86, and is fixed at a desired position.

Since the holding means 8 is rotatable around each axis and can be fixed at a desired position as described above, the scaler 9 held by the holder 81 can be set at an arbitrary position in the space at an arbitrary position. Can be held at an angle. That is, the blades can be held by the various scalers 9 such that the upper surface of the blade is parallel to the board surface 5a. At this time, it is preferable that the checking means 10 is mounted on the upper surface of the blade of the scaler 9, the direction of the upper surface of the blade is checked, and the upper surface of the blade is held parallel to the board surface 5a.

Thus, the scaler 9 held by the holding means 8 so that the upper surface of the blade is parallel to the board surface 5a.
Is brought into contact with the polishing means 4 and the polishing means 4 is slid along the bar 21 so that the cutting edge of the scaler can be polished at an arbitrary angle. Here, since the holding means 8 is movable on the substrate 6, a curved blade can be easily polished by moving the holding means 8.

In the above description of the polishing apparatus, only the embodiment having the surface plate 5 and the substrate 6 has been described. However, the present invention is not limited to this embodiment, and is not limited to this embodiment. The angle defining means 3 having the bar 21 through which the polishing means 4 is movably inserted without using the substrate 5 and the substrate 6, and the holding means 7 and 8 of the scaler may be directly installed on a desk. Absent. At this time, the holding means 7, 8
It can be moved even on a desk.

In the above description, only the configuration in which the guide means 2 (the bar 21) is composed of a single member (a single bar) has been described. However, in the present invention, the present invention is not limited to this embodiment, and the guide means 2 includes a second member in which the polishing means 4 is movably attached to a first member having an attachment portion to the angle defining means 3. It is also possible to adopt a configuration composed of a plurality of members such that the members (bar-shaped members) are connected.

Further, in the above description, only the configuration in which the first grinding stone and the second grinding stone have the concave grooves has been described. However, the present invention is not limited to this embodiment, and the stepped portion is not limited to this embodiment. A first grindstone and a second grindstone which have a through-hole by being combined with each other may be used.

[0054]

According to the polishing apparatus of the present invention, the angle defining means can define the rod as the guide means at a desired inclination angle, and the polishing means moves along the rod.
The cutting edge of the scaler can be easily polished to a prescribed desired angle. As described above, the polishing apparatus of the present invention can arbitrarily define the inclination angle of the polishing means by the angle specifying means, so that the degree of freedom in selecting the polishing angle is high, and it is possible to cope with the polishing of the cutting edge of various scalers. In addition, the blade of the scaler can be polished at a fixed angle only by sliding the polishing means along the bar defined at the desired angle, so that no skill is required for the polishing operation, and individual differences in the finish of the polishing are required. Appearance can be eliminated as much as possible. For this reason, it is also useful for joint use of small dental instruments such as a scaler.

Further, since the polishing apparatus of the present invention can move the polishing means at a constant angle along the guide means, it can be used as a training apparatus for manual polishing which performs the same operation. In addition, the polishing apparatus of the present invention can easily perform the operation of defining the angle of the polishing means and the setting of the scaler, so that the polishing operation of the scaler can be easily performed even during the operation.

Further, in the polishing apparatus of the present invention, since the operator moves the grindstone, which is the polishing means, by hand, the polishing can be performed while checking the state of the blade edge of the scaler. For this reason, excessive polishing of the blade of the scaler can be prevented. Also,
The polishing apparatus of the present invention does not incorporate complicated parts such as electric parts and has a simple configuration, so that it can be assembled at a low cost. Sterilization such as sterilization and gas sterilization can be performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a distal end portion of a scaler.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view showing a configuration of a polishing apparatus of the present invention.

FIG. 4 is a perspective view showing another mode of the guide means.

FIG. 5 is a view taken in the direction of arrow A in FIG. 3;

FIG. 6 is a perspective view of a portion surrounded by a circle B in FIG.

FIG. 7 is an exploded perspective view of the polishing means.

FIG. 8 is a perspective view showing a configuration of a handrest.

FIG. 9 is a perspective view illustrating a configuration of a checking unit.

FIG. 10 is a perspective view showing the configuration of another embodiment of the checking means.

FIG. 11 is a perspective view showing another aspect of the handrest.

FIG. 12 is a perspective view showing a configuration of a fixed base.

FIG. 13 is a perspective view showing another embodiment of the polishing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Polishing apparatus 2 Guide means 3 Angle defining means 4 Polishing means 5 Surface plate 6 Substrate 7 Holding means 8 Holding means 9 Scaler 10 Checking means 11 Checking means 21 Bar material 31 Protractor 32 Fastener 35 Stopper 41 First grinding wheel 42 Second grinding wheel 43 Connecting Cap 62 Long Hole 63 Leg 71 Hand Rest 72 Guide Member 76 Instrument Receiver 81 Holder 82 Fixing Member 85 Pedestal

Claims (9)

[Claims] 1. A guiding means extending in one direction, an angle defining means capable of fixing the guiding means at a desired inclination angle, a polishing means attached to the guiding means and movable in the one direction, and an object to be polished. And a holding means for holding the wafer at a desired angle. 2. The grinding means is fitted to first and second grinding wheels, which are combined to form a prismatic whetstone having a through hole, and both ends of the first and second grinding wheels, and the guide means is provided. The polishing apparatus according to claim 1, further comprising: a connecting member having an insertion hole to be inserted. 3. The polishing apparatus according to claim 2, wherein the insertion hole is set to be smaller than a through hole of a prismatic grindstone obtained by combining the first and second grindstones. 4. The polishing apparatus according to claim 1, wherein said guide member is a rod having a polygonal cross section. 5. The polishing apparatus according to claim 2, wherein said first and second whetstones are whetstones having different roughnesses. 6. The polishing apparatus according to claim 1, further comprising a substrate on which said holding means is movably mounted along a plate surface. 7. The polishing apparatus according to claim 6, wherein said holding means is a handrest including a guide member for holding an upper surface of a blade to be polished at the desired angle with respect to a plate surface of said substrate. 8. The holding means grips an object to be polished,
7. The polishing apparatus according to claim 6, wherein the holder is a holder for holding an upper surface of a blade to be polished at the desired angle with respect to a plate surface of the substrate. 9. The polishing apparatus according to claim 7, further comprising checking means for checking the orientation of the upper surface of the blade to be polished when setting the object to be polished on the holding means.