Self-centering supporting device for edging of dental bur

Abstract

The utility model relates to the technical field of machining, in particular to a self-centering supporting device for edging of a dental bur. An arc-shaped groove (102) is formed in the supporting block (1) and can support a dental bur (9); the universal head (101) can rotate in the hinge groove (201) in a matched mode. The base (2) is of a block-shaped structure, the block-shaped structure can ascend and descend in the cavity of the support (3), a hole is formed in the side wall of the block-shaped structure, a fastening screw (5) can be inserted into the hole, and the fastening screw (5) can rotate to extrude the base (2) to be fixed. The supporting angle of the supporting inclined face can be automatically adjusted, and the supporting requirements during machining of the neck conical faces of the machine needles of different specifications are met. And friction traces of the supporting block on the conical surface of the neck can be reduced, machining is convenient, response is rapid in the machining process, and machining can be convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a self-centering support device for the edge-opening machining of dental burs. Background Art

[0002] In the edge-opening (machining cutting teeth on the edge part of the bur) machining process of dental burs, due to the reasons of the machining process, the rod part is prone to bending deformation after edge-opening, resulting in out-of-tolerance runout of the processed product. Therefore, it is necessary to support the workpiece during the edge-opening process to avoid the above phenomena. The most ideal position for supporting the workpiece is at the neck conical surface. In order to reduce the friction marks of the support block on the neck conical surface, it is necessary to increase the support contact area, so an inclined-plane support block adapted to the neck conical surface should be selected. Since the neck cone angles of different specifications of burs are different, it is necessary to propose a self-centering support device that can automatically adjust the support inclined-plane angle to adapt to all neck cone angles. Summary of the Utility Model

[0003] Purpose of the utility model: To provide a better self-centering support device for the edge-opening machining of dental burs. The specific purpose can be seen in the multiple substantial technical effects in the specific implementation part.

[0004] A self-centering support device for the edge-opening machining of dental burs, characterized in that the support device comprises a support block 1, on which an arc-shaped groove 102 is arranged, and the arc-shaped groove 102 can hold the dental bur 9; a universal joint 101 is integrally made below the support block 1, and the universal joint 101 can fit in the hinge groove 201 for rotation.

[0005] A further technical solution of the utility model is that the basic structure where the hinge groove 201 is located, i.e., the base 2, is a block structure, and this block structure can be lifted and lowered in the cavity of the support 3. A hole is arranged on the side wall of the block structure, and a fastening screw 5 can be inserted into this hole, and the fastening screw 5 can rotate to squeeze the base 2 to fix it.

[0006] A further technical solution of the utility model is that the support 3 is placed on the telescopic shaft of the telescopic cylinder 4.

[0007] A further technical solution of the utility model is that the arc-shaped groove 102 fits the variable-diameter part of the dental bur 9.

[0008] A further technical solution of the utility model is that the dental bur 9 is located on the spindle chuck 8.

[0009] A further technical solution of the utility model is that the clamping handle part of the dental bur 9 has patterns.

[0010] A further technical solution of the present utility model is that a baffle 6 is provided at each end of the support block 1, and the baffle 6 is fixed to both sides of the support 3 by screws 7, and its function is to prevent the universal joint 101 from moving axially along the hinge axis in the hinge groove 201.

[0011] A further technical solution of the present utility model is that the universal joint 101 is a ball head or a cylinder.

[0012] A further technical solution of the present utility model is that when the universal joint 101 is a cylinder, the center line of the arc-shaped groove is perpendicular to the projection of the center line of the cylindrical universal joint on the horizontal plane; a cylindrical hinge groove adapted to the cylindrical universal joint is provided on the upper part of the base, and the arc of the cross section of the hinge groove is a non-integral circular arc with an arc angle greater than 180º, and the spherical universal joint is hinged in the hinge groove.

[0013] The present utility model adopting the above technical solution has the following beneficial effects compared with the prior art: the support inclined plane can automatically adjust the support angle to meet the support requirements during the processing of the neck conical surfaces of dental burs of different specifications. It can reduce the friction marks of the support block on the neck conical surface, facilitate processing, respond quickly during the processing, and is convenient for processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to further illustrate the present utility model, the following is further described with reference to the drawings:

[0015] Figure 1 is a schematic plan view of an embodiment of the present utility model for supporting the neck conical surface of a dental bur during processing;

[0016] Figure 2 is a schematic plan view of an embodiment of the present utility model;

[0017] Figure 3 is Figure 2 the left view of;

[0018] Figure 4 is Figure 2 the schematic structural view of the support block in;

[0019] Figure 5 is Figure 2 the schematic structural view of the base in

[0020] Wherein: 1. support block, 101 universal joint, 102 arc-shaped groove, 2. base, 201 hinge groove, 3. support, 4. telescopic cylinder, 5. fastening screw, 6. baffle, 7. screw, 8. spindle chuck, 9. dental bur, θ is the cone angle of the neck conical surface of the dental bur, and F is the downward pressure of the grinding wheel on the cutting edge of the dental bur during edge opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further illustrated in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0023] This patent provides multiple parallel solutions. The different expressions belong to improved solutions or parallel solutions based on the basic solution. Each solution has its own unique features. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. The fixing method not described in the text can be any one of screw fixing, bolt fixing or glue bonding, etc.

[0024] Embodiment 1: In combination with all the attached drawings; a self - centering support device for the edge - opening processing of dental burs. It is characterized in that the support device includes a support block 1, on which there is an arc - shaped groove 102 that can hold the dental bur 9; integrally formed below the support block 1 is a universal joint 101 that can fit into the hinge groove 201 and rotate. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: The support slope can automatically adjust the support angle to meet the support requirements during the processing of the neck conical surfaces of burs of different specifications. It can reduce the friction marks on the neck conical surface by the support block, facilitate processing, respond quickly during the processing, and is convenient for processing.

[0025] Embodiment 2: As a further improvable solution or a parallel solution or an alternative independent solution, the basic structure where the hinge groove 201 is located, that is, the base 2, is a block - shaped structure that can be lifted and lowered in the cavity of the support 3. There are holes arranged on the side wall of the block - shaped structure, and a fastening screw 5 can be inserted into the holes. The fastening screw 5 can rotate to squeeze the base 2 and then fix it. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: It can adjust the height of the overall structure to adapt to different installation positions and processing environments.

[0026] Embodiment 3: As a further improvable solution or a parallel solution or an alternative independent solution, the support 3 is placed on the telescopic shaft of the telescopic cylinder 4. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: It further provides a lifting structure and can make way when processing other equipment.

[0027] Embodiment 4: As a further improvable solution or a parallel solution or an alternative independent solution, the arc - shaped groove 102 fits the variable - diameter part of the dental bur 9. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: It can facilitate the support to achieve fitting.

[0028] Embodiment 5: As a further improvable solution or a parallel solution or an alternative independent solution, the dental bur 9 is located on the spindle chuck 8.

[0029] Embodiment 6: As a further improvable solution or a parallel solution or an alternative independent solution, the clamping handle part of the dental bur 9 includes patterns. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: To avoid slipping.

[0030] Innovatively, the above - mentioned effects exist independently, and a set of structures can also be used to complete the combination of the above results.

[0031] The following focuses on the cylindrical design. The design of the ball head is similar to the universal joint structure and will not be elaborated here. The articulation described in this article is only to prove that it can rotate and can also be replaced by the word "docking".

[0032] The support block 1 is articulated above the base 2. The base 2 is fixed to the upper part of the support 3. A telescopic cylinder 4 is provided at the lower part of the support 3, and the telescopic cylinder 4 is fixedly arranged on the machine tool workbench. An arc-shaped groove 102 is provided at the upper part of the support block 1 for supporting the neck cone surface of the dental bur. A non-circular cylindrical universal joint head 101 is provided at the lower part. The center line of the arc-shaped groove 102 and the center line of the cylindrical universal joint head 101 are perpendicular to each other in the horizontal plane projection; a cylindrical articulation groove 201 adapted to the cylindrical universal joint head 101 is provided at the upper part of the base 2. The cross-section arc of the articulation groove 201 is a non-circular arc with an arc angle greater than 180º; the universal joint head 101 is articulated in the articulation groove 201.

[0033] As Figure 1 As shown, during edge grinding, the dental bur 9 is clamped in the spindle chuck 8, and the spindle chuck 8 drives the dental bur 9 to rotate. The edge grinding wheel generates a downward pressure F on the edge of the dental bur 9. The downward pressure F is likely to cause the rod part of the dental bur 9 to bend and deform, resulting in an out-of-tolerance runout of the edge of the final product. To avoid this phenomenon, it is necessary to support the lower part of the neck of the dental bur 9 during the edge grinding process. Before edge grinding the dental burs 9 of the same specification, first loosen the fastening screw 5 to allow the base 2 to sink fully in the support 3. Since the arc angle of the articulation groove 201 of the base 2 is greater than 180º, the articulation groove 201 can drive the universal joint head 101 to sink accordingly. Then, in sequence, extend the telescopic cylinder 4 upward to the limit position, manually move the base 2 upward and make the bottom of the arc-shaped groove 102 of the support block 1 be in full contact with the neck of the dental bur, that is, the variable diameter part, and lock the fastening screw 5. Since the universal joint head 101 can swing freely in the articulation groove 201, no matter how the neck cone angle θ of the dental bur 9 changes due to different specifications, the bottom of the arc-shaped groove 102 of the support block 1 can be in full contact with the neck of the dental bur through the automatic centering of the universal joint head 101. When processing different dental burs, only the height of the base 2 in the support 3 needs to be adjusted.

[0034] During normal processing, the telescopic cylinder is controlled to move up and down through an automatic control program. When edge grinding, moving upward serves as a support operation, and when replacing the product, moving downward facilitates taking out the dental bur 9 from the spindle chuck 8.

[0035] As Figure 2 As shown, a baffle 6 is provided at each end of the support block 1. The baffle 6 is fixed to both sides of the support 3 by screws 7, and its function is to prevent the universal joint head 101 from moving axially along the articulation axis in the articulation groove 201.

[0036] It should be noted that the multiple solutions provided by this patent include their own basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve multiple effects simultaneously.

[0037] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed protection.

Claims

1. Self-centering support device for edge-opening machining of dental burs, characterized in that The support device includes a support block (1) with an arc-shaped groove (102) arranged thereon, and the arc-shaped groove (102) can hold the dental bur (9); a universal joint head (101) is integrally formed below the support block (1), and the universal joint head (101) can fit into the hinge groove (201) for rotation.

2. The self-centering support device for the edge-opening machining of dental burs according to claim 1, characterized in that, The basic structure where the hinge groove (201) is located, i.e., the base (2), is a block structure, and this block structure can move up and down in the cavity of the support (3). There are holes arranged on the side wall of the block structure, and fastening screws (5) can be inserted into these holes. The fastening screws (5) can rotate to squeeze the base (2) for fixation.

3. The self - centering support device for the edge - opening processing of dental burs according to claim 1, wherein, The support (3) is placed on the telescopic shaft of the telescopic cylinder (4).

4. The self - centering support device for dental bur edge - opening machining according to claim 1, characterized in that, The arc-shaped groove (102) fits the variable-diameter part of the dental bur (9).

5. The self-centering support device for dental bur edge grinding according to claim 1, wherein, The dental bur (9) is located on the spindle chuck (8).

6. The self-centering support device for dental bur edge machining according to claim 1, characterized in that The clamping handle part of the dental bur (9) includes patterns.

7. The self - centering support device for dental bur edge - opening processing according to claim 1, characterized in that, A baffle (6) is provided at each end of the support block (1), and the baffle (6) is fixed to both sides of the support (3) by screws (7). Its function is to prevent the universal joint head (101) from moving axially along the hinge axis in the hinge groove (201).

8. The self-centering support device for dental bur edge grinding according to claim 2, wherein The universal joint head (101) is a ball head or a cylinder.

9. The self - centering support device for dental bur edge - opening processing according to claim 8, characterized in that, When the universal joint head (101) is a cylinder, the center line of the arc-shaped groove and the projection of the center line of the cylindrical universal joint head on the horizontal plane are perpendicular to each other; a cylindrical hinge groove adapted to the cylindrical universal joint head is provided on the upper part of the base. The cross-section arc of the hinge groove is a non-integral circular arc with an arc angle greater than 180º, and the spherical universal joint head is hinged in the hinge groove.

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