Material-fixing device for fabricating custom abutment

Abstract

A material-fixing device for fabricating a custom abutment, according to the present invention, comprises: a clamping block having at least one support hole formed therein; a fixing support member comprising a fixing unit inserted into and supported by the support hole, and a material-supporting unit extending from the fixing unit to support one side of an abutment material to be processed; and a fastening unit for fixing, to the clamping block, the fixing unit inserted into the support hole of the clamping block, wherein the fixing unit inserted into the support hole comprises a collet having collet pieces, and the fastening unit includes a fastening member which is screw-coupled to a coupling screw unit via the support hole so as to expand the collet pieces outward, the coupling screw unit being formed on the inner circumferential surface of a hollow formed by collet pieces or formed around the center of the fixing support member.

Description

Material fixing device for custom abutment processing.

[0001] The present invention relates to a customized abutment, and more specifically, to a material fixing device for processing a customized abutment with improved fixing force to prevent the material from shaking due to processing force during the processing of the material for manufacturing the abutment.

[0002] Generally, an implant is an artificial tooth grafted into the alveolar bone when a tooth is lost. Implants have the advantage of being able to be placed only on the missing area without damaging adjacent teeth, and they offer the benefits of rapidly restoring tooth functionality, aesthetic form, accurate pronunciation, and overall oral health.

[0003] Such implants are equipped with a fixture that is implanted into the gum, an abutment that is fixed to the fixture by a screw, and a crown that is fixed on the abutment and forms the shape of an artificial tooth.

[0004] The abutment described above transmits the load from the crown to the fixture, thereby serving to transfer the load to the jawbone. To this end, the abutment, which is the workpiece, must be manufactured considering the size, shape, and contour of the artificial tooth; furthermore, it must be manufactured to reflect the occlusion with surrounding teeth and opposing teeth (upper or lower), individual characteristics, tooth properties, gum condition, and gum line.

[0005] For this reason, custom-made abutments for implants, which are manufactured according to each patient's teeth, are preferred over products supplied in standard sizes.

[0006] Custom abutments are fabricated using a CAD / CAM milling attachment to fit the patient, and for precision fabrication, the material held by the jig must not change position or shake due to the processing force.

[0007] Korean Patent No. 10-1334524 discloses a multi-jig for processing customized abutments, and Korean Patent No. 10-1933577 discloses a jig for processing customized abutments.

[0008] The disclosed jig comprises a clamping block for fixing an abutment material, a plurality of clamping bolts for fixing the clamping block to an auxiliary support block, and a material fixing means for fixing the abutment material by tightening the clamping bolts into the fixing screw holes of the abutment material through the fixing holes.

[0009] Conventional jigs as described above have a structure in which the abutment material is directly fixed to the clamping block, making it difficult to secure machining space when machining the abutment.

[0010] Korean Patent No. 10-67710 discloses a jig for processing a customized abutment, Korean Patent No. 10-1487133 discloses a customized abutment and a method thereof, Korean Patent No. 10-1870418 discloses a jig for producing multiple abutments, and Korean Patent No. 10-2573987 discloses a means for fixing a round bar for an abutment.

[0011] The above-mentioned round bar fixing means for the abutment comprises a connector fixed to a block and a round bar installed on the connector, and precision machining is difficult because play occurs at the joint between the block and the connector due to processing vibration and external force applied by a tool.

[0012] The present invention aims to solve the problems described above by providing a customized material fixing device for abutment processing that can improve the processing precision of the abutment by firmly fixing the abutment material and further enhance the reliability of the processed abutment.

[0013] The material fixing device for customized abutment processing according to the present invention for achieving the above objective comprises a clamping block having at least one support hole formed therein, and

[0014] A fixed support member comprising a fixed part inserted into the above-mentioned support hole and pressed to ensure close contact with the inner surface of the support hole so as to prevent the occurrence of play, and a material support part extending from the fixed part and supporting one side of an abutment material for processing, and

[0015] It is provided with a fastening part for fixing the fixing part inserted into the support hole of the clamping block to the clamping block, and

[0016] The above-described fastening portion comprises a fixed portion inserted into a support hole, which is formed as a collet having collet pieces, and includes a fastening member for expanding the collet pieces outwardly by screw-coupled through a connecting screw portion formed on the inner circumference of the hollow formed by the collet pieces and the support hole.

[0017] In the present invention, the connection between the material support member and the abutment material is achieved by a connecting bolt that is connected to the material support member through a stepped hollow portion formed in the direction of the central axis of the abutment material.

[0018] The connection between the above-mentioned material support and the abutment material is achieved by combining a connecting bolt inserted through a stepped hollow formed along the central axis of the abutment material and a fastening nut supported in the stepped hollow of the material support.

[0019] Alternatively, a material fixing device for customized abutment processing to achieve the above purpose comprises a clamping block having at least one support hole formed therein, a fixing part inserted into the support hole and pressed to be in close contact with the inner surface of the support hole to prevent the occurrence of play, and a material support part extending from the fixing part to support one side of an abutment material for processing.

[0020] The above-mentioned fixing member is inserted into a support hole and comprises a collet formed by collet pieces, a hollow formed by the collet pieces extending to the material support member, a coupling screw portion formed on the inner circumference of the hollow formed in the material support member, and a fastening member that is coupled to the coupling screw portion through a stepped support hole.

[0021] The material fixing device for processing a custom abutment according to the present invention can fundamentally prevent a decrease in processing precision caused by play in the fixing part supported by the clamping block when processing a custom abutment using an abutment material.

[0022] In addition, it is possible to fundamentally prevent the center of the support member from being misaligned when the clamping block and the fixing part are combined.

[0023] FIG. 1 is an exploded perspective view of a material fixing device for customized abutment processing according to the present invention.

[0024] FIG. 2 is a cross-sectional view of a material fixing device for customized abutment processing according to the present invention.

[0025] FIG. 3 is a cross-sectional view showing another embodiment of a material fixing device for processing a custom abutment,

[0026] FIG. 4 is an exploded perspective view showing another embodiment of a material fixing device for customized abutment processing according to the present invention.

[0027] FIG. 5 is a cross-sectional view showing the state in which the customized abutment material illustrated in FIG. 4 is fixed to the support member.

[0028] FIG. 6 is an exploded perspective view showing another embodiment of a material fixing device for customized abutment processing according to the present invention.

[0029] FIG. 7 is a cross-sectional view of a material fixing device for processing a custom abutment shown in FIG. 6.

[0030] The present invention relates to a material fixing device for processing customized abutments, and embodiments are shown in FIGS. 1 to 3.

[0031] Referring to the drawings, the material fixing device (10) for customized abutment processing according to the present invention comprises a clamping block (20) having at least one support hole (21) formed therein, a fixing support member (30) coupled to the support hole (21) to support an abutment processing material (100), and a fastening part (40) for fixing the fixing support member (30) to the clamping block (20).

[0032] The support holes (21) installed at predetermined intervals in the clamping block (20) are formed in a stepped structure by creating a difference in diameter between the part into which the fixing part (31) of the fixing support member (30) described later is inserted and the part into which the head part of the fastening member (41) for fastening is inserted.

[0033] In the clamping block (20), a screw is formed on the inner surface perpendicular to the portion into which the fixing part (31) is inserted, and a screw is formed therein to form a screw-fastening member coupling hole (26) into which a screw-fastening member (25) is fastened.

[0034] The above fixed support member (30) is supported by a clamping block (20) to fix an abutment processing material (100), and includes a fixing part (31) that is inserted into the support hole (21) and pressed so that its outer surface is in close contact with the inner surface of the support hole (21), thereby preventing the occurrence of play due to external force, and a material support part (37) that extends from the fixing part (31) and supports one side of the abutment processing material (100) for processing. It is preferable that the material support part (37) be formed in a truncated cone shape so that interference does not occur during the machining of the abutment processing material (100).

[0035] As shown in FIGS. 2 and 3, the fixing part (31) of the fixed support member (30) that is coupled with the support hole (21) of the clamping block (20) is made of a collet (33) having at least two collet pieces (32) that have a diameter substantially similar to the outer diameter of the support hole (21) and form a hollow on the inner surface.

[0036] A connecting screw portion (34) is formed on the inner surface of the hollow formed by the above collet pieces (32). Additionally, an annular groove (35) may be formed on the outer surface of the collet pieces (33) to prevent detachment from the support hole (21). The groove (35) is in close contact with the end of the anti-detachment member (25) screw-coupled to the clamping block (20), thereby preventing the fixing portion (31) from being separated from the support hole (21).

[0037] And the fastening part (40) for preventing the fixing part (31) inserted into the support hole (21) of the clamping block (20) from detaching from the clamping block (20) includes a fastening member (41) that is inserted from the side corresponding to the side where the fixing part (31) is inserted and screw-coupled with the coupling screw part (34) formed by the collet pieces (32). At this time, the head part of the fastening member (41) catches on the stepped portion of the inner surface of the support hole (21).

[0038] The above fastening member (41) expands the collet pieces (32) forming the fixing part (31) when screw-coupled to the coupling screw part (34) and presses them against the inner surface of the support hole (21), thereby firmly fixing the fixing part (31) to the clamping block (20).

[0039] To this end, the screw portion (42) of the fastening member (41) may have a tapered structure that gradually increases in diameter than the screw portion (34) so ​​that the collet pieces (32) can be expanded outwardly when coupled with the screw portion (34).

[0040] However, it is not limited to this, and the diameter of the connecting screw portion (34) may be formed to be smaller than the diameter of the male screw of the fastening member (41) within the coupling tolerance range so that the collet piece (32) expands when coupled with the fastening member (41).

[0041] Meanwhile, the support hole (21) and the collet (33) are further provided with a rotation prevention part (45) that prevents rotation of the fixed support member (30). In this rotation prevention part (45), a first smooth surface (45a) is formed on one side of the inner circumference of the support hole (21), and a second smooth surface (45b) is formed on the outer circumference of the fixed part (31), so that rotation can be prevented by these surfaces being in close contact.

[0042] In order to prevent the center of the fixed support member (30) from shifting when the support hole (21) and the fixed part (31) are combined, the first smooth surface (45a) is preferably formed in pairs to correspond to the upper and lower surfaces of the inner circumference of the support hole (21), and the second smooth surface (45b), which is formed on the outer circumference of the fixed part (31) and in close contact with the first smooth surface (45a), is preferably formed in pairs to correspond to each other.

[0043] The above-mentioned anti-rotation part (45) is not limited to the first and second smooth surfaces (45a) (45b), but may be formed by forming an inlet groove on the inner surface of the support hole (21) so that they can be joined together, and forming a protrusion on the outer surface of the fixing part (31) that joins with the inlet groove so that they are joined together in close contact.

[0044] And the connection between the material support member (37) and the abutment processing material (100) can be achieved by screwing the material support member (37) and the connecting bolt (60) through a stepped hollow formed in the direction of the central axis of the abutment processing material (100), or by screwing the connecting bolt (60) through a step formed in the direction of the central axis of the abutment processing material (100) and a support nut (61) that is supported inside the material support member (37) coaxially with the central axis of the material support member (37), as shown in FIG. 3.

[0045] Here, a tapered first coupling hole (38) with the same center as the central axis is formed at the end of the fixed support member (30), and a tapered first coupling projection (101) that is coupled to the first coupling hole (38) is formed at the end of the abutment processing material (100) coupled thereto to prevent misalignment when they are coupled.

[0046] FIGS. 4 and 5 show another embodiment of a material fixing device for customized abutment processing according to the present invention. The same reference numerals as in the above embodiment indicate the same components.

[0047] Referring to the drawing, the fixing part (50) of the support member (30) is formed such that a hollow formed on the inner circumference of a collet piece (51) inserted into the support hole (21) of the clamping block (20) extends toward the collet piece (51) and the material support part (37). Additionally, a coupling screw part (53) for coupling is formed on the inner circumference of the hollow formed toward the material support part (37). The coupling screw part (53) is not formed on the inner circumference of the collet piece (51).

[0048] The fastening member (55) of the fastening part (40) for fixing the fixed part (50) to the support hole (21) of the clamping block (20) has a structure that is screw-coupled to the screw coupling part (53) through the stepped support hole (21) of the clamping block (20).

[0049] Here, a tapered shape with a gradually increasing diameter may be formed on the outer surface of the fastening member (55) to expand the collet piece (51) outward, or the outer diameter of the collet (52) formed by the collet pieces (51) may be formed to have a positive tolerance with respect to the support hole (21) so that it can be forcibly fitted into the support hole (21), or an expansion projection (56) may be formed to expand the collet pieces (51) toward the inner surface of the support hole (21).

[0050] Meanwhile, the customized abutment processing material fixing device according to the present invention may be structured such that the abutment processing material (100) is directly coupled to the support hole of the clamping block (20), as shown in FIGS. 6 and 7. In this embodiment, a fixing part (70) coupled to the support hole (21) of the clamping block (20) is formed at one end of the abutment processing material (100), and this fixing part (70) has a structure coupled with a fastening member (41) inserted into the support hole (21) of the clamping block (20).

[0051] The structure of the above fixing part (70) can be substantially the same as that of the above embodiment. That is, the fixing part (70) formed integrally with the abutment processing material (100) is composed of collet pieces (71) that are inserted into the support hole (21) of the clamping block (20), and since a coupling screw part (72) is formed on the inner circumference, it is formed by screw coupling with the fastening member (73) that forms the fastening part (40).

[0052] The screw connection portion of the above-mentioned fastening member (73) may have a tapered structure that gradually increases from the diameter of the connection screw portion so that when connected with the connection screw portion (72) of the above-mentioned fixing portion (70), the collet pieces (71) can be expanded to come into close contact with the inner surface of the support hole (21).

[0053] In the custom abutment processing material fixing device according to the present invention configured as described above, the fixing part (31) of the fixing support member (30) inserted into the support hole (21) of the clamping block (20) is composed of collet pieces (32), and since a coupling screw part (34) is formed on the inner circumference thereof, when screw-coupled with the fastening member (61) forming the fastening part (60), the collet pieces (32) expand and come into close contact with the inner circumference of the support hole (21) of the clamping block (20), thereby increasing the coupling force.

[0054] In particular, if the fastening member (41) that is combined with the fixed part (31) is tapered, the above-described effect can be further maximized.

[0055] In addition, in the embodiment illustrated in FIGS. 4 and 5, the fastening member (55) penetrates the collet (52) and is screw-coupled with the coupling screw portion (53) formed on the material support portion (37) side, thereby increasing the coupling force between the fixing portion (52) and the support hole (21), and the load acting on the material support portion (37) acts on the fastening member (55) which is extended and coupled to the material support portion (37) side, so the material support force by the material support portion (37) can be increased.

[0056] This can reduce machining defects caused by weakening the supporting force of the material during machining of the abutment material. In particular, the abutment fixing device of the present invention has a rotation prevention part (45) formed on the outer surface of the fixing part (31) and the outer surface of the support hole (21), so that the fixing part (31) can be prevented from rotating relative to the clamping block (20). The rotation prevention part (45) has a first smooth surface (45a) formed on the inner surface of the support hole (21) and a second smooth surface (45b) that is coupled with the first smooth surface formed in pairs on the outer surface of the fixing part (31), so that the center of the support hole (21) and the center of the fixing part (31) can be prevented from being misaligned when the collet pieces (32) are expanded relative to the clamping block (20).

[0057] Also, since the outer surface of the material support part (37) of the fixed support member (30) is formed in the shape of a truncated cone, interference with the processing tool for processing the abutment can be minimized.

[0058] As shown in FIG. 6, when a fixing part (70) is formed on the abutment processing material (100), the abutment processing material (100) can be directly fixed to the support hole (21) of the clamping block (20), thereby reducing the amount of work required for fixing and increasing the support force for the clamping block.

[0059] As described above, the material fixing device for customized abutment processing according to the present invention can firmly support the material during abutment processing, thereby improving processing stability and product precision.

[0060] The present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. A clamping block having at least one support hole formed therein, and A fixed support member comprising a fixed part inserted into and supported in the above-mentioned support hole, and a material support part extending from the fixed part and supporting one side of an abutment material for processing, and It is provided with a fastening part for fixing a fixing part inserted into a support hole of the clamping block to the clamping block, and A material fixing device for customized abutment processing, characterized in that the above-mentioned fastening part comprises a fixed part inserted into a support hole, which is formed as a collet having collet pieces, and is screw-coupled through a connecting screw part formed on the inner circumference of a hollow formed in the central direction of a fixed support member formed by the collet pieces and a support hole to expand the collet pieces in an outward direction.

2. In Paragraph 1, A customized abutment processing material fixing device characterized by the connection of the above material support part and the abutment processing material being formed by screwing a connecting bolt inserted through a stepped hollow part formed in the direction of the central axis of the above abutment processing material and the material support part.

3. In Paragraph 1, A customized abutment processing material fixing device characterized by the connection of the above-mentioned material support part and the abutment processing material being formed by combining a connecting bolt inserted through a stepped hollow part formed in the central axis direction of the abutment material and a fastening nut supported in the stepped hollow part of the material support part.

4. In Paragraph 1, A material fixing device for customized abutment processing, characterized in that a rotation prevention part is formed in the support hole of the clamping block and the collet forming the fixed part to prevent the fixed part from rotating.

5. In Paragraph 4, A material fixing device for customized abutment processing, characterized in that the above-mentioned anti-rotation part comprises at least one first smooth surface formed on the inner surface of a support hole and at least one second smooth surface formed on the outer circumference of the above-mentioned fixing part and coupled with the first smooth surface.

6. In Paragraph 1, A material fixing device for customized abutment processing, characterized in that a hollow formed by collet pieces forming the fixed part is extended to the material support part, a coupling screw part is formed on the inner circumference of the hollow formed in the material support part, and a fastening member is provided such that the coupling member is coupled to the coupling screw part through a stepped support hole.

7. A clamping block having at least one through support hole formed therein, and A fixed part inserted into and supported in the above-mentioned support hole, an abutment processing material extending from the fixed part for processing, and The above-mentioned fixing part is provided with a fastening part for fixing it to a support hole, A material fixing device for customized abutment processing, characterized in that the above-mentioned fastening part comprises a fixed part inserted into a support hole, which is formed as a collet having collet pieces, and is screw-coupled through a connecting screw part formed on the inner circumference of a hollow formed in the central direction of a fixed support member formed by the collet pieces and a support hole to expand the collet pieces in an outward direction.

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