Lathe spring chuck for 3D printing implant processing

Abstract

The invention discloses a lathe spring chuck for 3D printing implant machining, and mainly relates to the technical field of numerical control lathe chucks. Comprising an adjusting cover body and a chuck body, a center insertion hole matched with the chuck body is formed in the front end of a machine tool spindle, an implant receiving groove is formed in the middle of the front end face of the chuck body, an elastic piece is arranged on the front portion of the chuck body, and a plurality of openings are evenly formed in the outer wall of the elastic piece in the circumferential direction of the chuck body. A conical block is arranged in the middle of the outer wall of the elastic piece, the outer diameter of the conical block is sequentially reduced from front to back, a center hole matched with the front end of the elastic piece is formed in the middle of the chuck body, and the front end face of the conical block abuts against an adjusting cover body. The invention aims to provide a spring chuck for an implant processing lathe manufactured by a 3D printer, and irregular-shaped implants manufactured by the 3D printer can be easily clamped through forming.

Description

Technical Field

[0001] The invention relates to the technical field of CNC lathe chucks, in particular to a lathe spring chuck for 3D printing implant processing. Background Art

[0002] A CNC lathe is a machine tool that is equipped with a controller on a general-purpose lathe (manual lathe). The difference between a CNC lathe and a general-purpose lathe is that it can automatically process various workpieces using a computer program. These CNC lathes are generally composed of a mechanical device and a controller that controls the mechanical device. Although the configuration of the mechanical device varies, it generally includes a spindle box, a chuck device, a turret, a tailstock, a hydraulic device, a transfer device, etc., which can all be used as one component.

[0003] Generally speaking, in the processing method of CNC lathes, in order to manufacture the final workpiece, the raw material in the form of a round bar is inserted into the CNC lathe from the beginning, and then pulled out to the same length as the workpiece. The workpiece is finally processed, and then fixed on a clamping device, and cut with a cutting tool (a drill or a tool with a blade) to manufacture. At this time, the raw material is in the shape of a round bar, or it can be in the shape of a cylinder with a constant diameter and a long length.

[0004] The chuck device of a traditional CNC lathe clamps a round bar with a constant diameter, so the surface of the contact part between the chuck device and the round bar-shaped raw material is parallel, but the 3D printed workpiece is already in the final product, such as a dental implant. Depending on the shape, the clamping contact surface may not be parallel. Therefore, when using the chuck device of a traditional CNC lathe, there is a problem that the center of the chuck device and the 3D printed workpiece is distorted during chuck (concentricity error occurs), and the processed products are inconsistent. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and provide a lathe spring chuck for 3D printed implant processing, when the implant manufactured by the 3D printer is processed on the CNC lathe, the implant contact part of the chuck body stirs the inclined chuck surface of the chuck. The purpose is to provide a spring chuck for the implant processing lathe manufactured by the 3D printer, which can easily clamp the irregularly shaped implant manufactured by the 3D printer through molding.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A lathe spring chuck for 3D printed implant processing, comprising an adjusting cover body threadedly connected to a machine tool spindle and a chuck body, the front end of the machine tool spindle is provided with a center insertion hole adapted to the chuck body, the middle part of the front end surface of the chuck body is provided with an implant receiving groove, the front part of the chuck body is an elastic member, a plurality of openings are evenly arranged on the outer wall of the elastic member along the circumference of the chuck body, a tapered block is provided in the middle part of the outer wall of the elastic member, the outer diameter of the tapered block decreases from front to back, the minimum outer diameter of the tapered block is not less than the outer diameter of the elastic member, a center hole adapted to the front end of the elastic member is provided in the middle part of the chuck body, the front end surface of the tapered block abuts against the adjusting cover body, the chuck body is locked on the machine tool spindle by adjusting the cover body, the adjusting cover body is rotated to press the tapered block on the elastic member into the center insertion hole, and then the 3D printed implant is locked in the implant receiving groove.

[0008] Preferably, the inner diameter of the entrance opening of the implant receiving groove gradually decreases from the outside to the inside.

[0009] Preferably, a second inclined surface and a first inclined surface are sequentially provided in the entrance opening of the implant receiving groove from outside to inside.

[0010] Preferably, the angles between the second inclined surface, the first inclined surface and the axis of the chuck body are 0.1-5°.

[0011] Preferably, the first inclined surface is a rough surface.

[0012] Preferably, the surface roughness of the rough surface is 8-15.

[0013] Preferably, a thread avoidance groove adapted to the 3D printed implant is provided in the implant receiving groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The chuck body of the present invention is locked on the machine tool spindle by adjusting the cover body. When the implant manufactured by the 3D printer is processed on the CNC lathe, the implant can easily clamp the irregularly shaped implant manufactured by the 3D printer by forming the implant contact part of the chuck body that tilts the main surface. Therefore, when the 3D printed dental implant is clamped in the chuck body, the implant contact part that is tilted to the same as the clamping surface is used to clamp the inclined clamping surface of the implant, thereby improving the concentricity error. In addition, stable clamping is also achieved, and stable processing can be achieved when processing 3D printed dental implants, and the implant will not shake. The 3D printed dental implant is clamped by the contact between the inclined surfaces, and there is no risk of deformation when the worker inserts the 3D printed dental implant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the use state of the present invention;

[0017] Figure 2 is an exploded view of the present invention;

[0018] Figure 3 It is a schematic diagram of the planar structure of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the chuck body.

[0020] Numbers in the accompanying drawings: 1. Adjustment cover; 2. Chuck body; 21. Implant receiving groove; 22. Conical block; 23. Second inclined surface; 24. First inclined surface; 3. Machine tool spindle; 4. 3D printed implant. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0022] Embodiment: The 3D printed implant 4 targeted by this embodiment is a fixture implanted in or on the jawbone (implanted in the gums and gingival bone) to support a prosthesis for repairing missing teeth. There are many types of 3D printed implants 4 (implants), such as screw-type endosteal implants (screw-type endosteal implants). The implant is usually formed in a screw shape and has a generally complex shape, such as must be formed inside a shape that can support the prosthesis. Recently, 3D printers have been used to easily process complex shapes. The use of this method to manufacture implants is increasing. However, implants manufactured with 3D printers are manufactured by stacking one layer at a time to create a three-dimensional shape, so the surface may be somewhat uneven, and a CNC lathe is required to smoothly process the contact surface (FS) that contacts the prosthesis so that it can be in close contact with the prosthesis without creating a gap in the contact surface (FS).

[0023] As attached Figure 1-4 The present invention discloses a lathe spring chuck for 3D printed implant processing, which can effectively clamp the 3D printed implant 4 when the 3D printed implant 4 is processed by a CNC lathe. This structure can effectively clamp the 3D printed implant 4 using the spring chuck of the 3D printer type implant processing lathe.

[0024] First, the lathe spring chuck for 3D printed implant processing described in the present invention is mainly composed of a chuck body 2 and an adjustment cover body 1, one end of the chuck body 2 is inserted into the machine tool spindle 3, and the other end is attached to the adjustment cover body 1 screwed onto the machine tool spindle 3. An implant receiving groove 21 can be formed, and a part of the 3D printed implant 4 can be inserted into the implant receiving groove 21, so that the 3D printed implant 4 manufactured by the 3D printer can be pressed and fixed. More specifically, the implant receiving groove 21 of the chuck body 2 is formed to have an inner diameter smaller than the entrance diameter, so that the diameter gradually narrows toward the inside, and when the 3D printed implant 4 is fixed, the 3D printed implant 4 has a thread avoidance groove that can be formed in the implant receiving groove 21 in a shape corresponding to the thread, so that the thread formed on the outer peripheral surface of the implant is not damaged.

[0025] In addition, the front part of the chuck body 2 is an elastic member, and a plurality of openings are evenly arranged on the outer wall of the elastic member along the circumference of the chuck body 2. A conical block 22 is arranged in the middle of the outer wall of the elastic member, and the outer diameter of the conical block 22 decreases from front to back, and the minimum outer diameter of the conical block 22 is not less than the outer diameter of the elastic member. A center hole adapted to the front end of the elastic member is arranged in the middle of the chuck body 2, and the front end surface of the conical block 22 abuts against the adjustment cover 1, and the chuck body 2 is locked on the machine tool spindle 3 by adjusting the cover 1, and the conical block 22 on the elastic member is pressed into the center insertion hole by rotating the adjustment cover 1, thereby locking the 3D printed implant in the implant receiving groove 21. Among them, the elastic member can be formed by a plurality of chuck claws, and the other ends of the plurality of chuck claws fix the 3D printed implant 4 separated by a gap. Therefore, when the chuck body 2 is pressed by the adjustment cover 1 screwed onto the machine tool spindle 3, the plurality of chuck claws retract inward to fix the 3D printed implant 4. For example, the chuck body 2 inserted into the receiving groove of the chuck body 2 of the machine tool spindle 3 is squeezed by the adjustment cover body 1 screwed to the machine tool spindle 3 to form the chuck body receiving groove. When retracted inwardly, the inclined portion formed on the outer diameter surface of the chuck claw of the chuck body 2 contacts the inner diameter surface of the chuck body receiving groove, and the chuck jaws move inwardly, which can be fixed by contraction.

[0026] At this time, although not shown in the figure, an elastic member such as a spring is inserted into the chuck body receiving groove, and inserted into the chuck body 2 along the direction in which the chuck body 2 is pressed by the cover to apply elastic force in the opposite direction. Therefore, when the adjustment cover 1 is unscrewed from the machine tool spindle 3, the elastic member pushes the chuck body 2 so that the chuck body 2 can move toward the outside of the chuck body receiving groove. At this time, the claws also move forward so that the inclined portion of the claws is outward from the chuck body receiving groove, and a plurality of claws are opened outward to form an implant that can be removed. In addition, the implant contact portion is formed in the implant receiving groove of the chuck body, and the first inclined surface 24 is formed to contact at least a portion of the chuck body 2, and the first inclined surface 24 is formed to be inclined at a first angle A1 relative to the main axis of the chuck body 3. For example, the first inclined surface 24 can be formed so that the first angle A1 is inclined by 0.1 to 5 degrees relative to the main axis of the chuck body 3.

[0027] In addition, the first inclined surface of the implant contact portion can be formed with a rough surface to improve the fixing force of the implant. For example, an implant manufactured using a 3D printer is manufactured by stacking one layer at a time to create a three-dimensional shape, so that the surface roughness (Ra) of the outer surface including the clamping surface can be formed from 8 to 15. Therefore, in order to effectively improve the fixing force of the implant, the surface roughness Ra of the rough surface R is preferably 8 to 15. Therefore, the implant contact portion is formed by a first inclined surface 24 having a first angle A1, thereby effectively clamping the clamping surface of the inclined implant. In addition, the implant contact portion has a second inclined surface 24, which contacts another part of the clamping surface of the obliquely formed implant. It can be formed to be inclined at a second angle A2 different from the first angle A1 relative to the main axis of the chuck body. More specifically, the second inclined surface is formed so that the second angle A2 is inclined by 0.1 to 5 degrees relative to the main axis of the chuck body, and the second angle A2 can be formed as the first angle (A1). For example, the clamping surface of the implant is formed by two inclined surfaces with different inclination angles, and the implant contact portion is formed by the inclined clamping surface of the implant. When the second inclined surface contacts one inclined surface of the clamping surface and the second inclined surface contacts the other inclined surface of the clamping surface, the implant can be fixed more firmly by making the two inclined surfaces contact. Therefore, the spring chuck of the implant processing lathe manufactured by the 3D printer according to the embodiment of the present invention is used to reduce the diameter of the implant when processing the implant manufactured by the 3D printer on the CNC lathe. Since the implant contact portion of the suction cup body stirs the photo adsorption surface at a certain angle, the irregularly shaped implant manufactured by the 3D printer can be easily clamped.

[0028] When the 3D printed dental implant is set in the spring chuck of the 3D printer manufacturing implant processing lathe, the clamping setting of the implant is tilted. By making the contact part and the clamping surface tilt the same, the concentricity error deviation can be improved.

[0029] When processing 3D printed dental implants, the stable clamping of the implant enables stable processing without shaking, and when the staff inserts the 3D printed dental implant into the spring chuck, the 3D printed dental implant is clamped by contact between the inclined surfaces. The 3D printer manufacturing implant processing lathe can prevent the problem of skewed or reverse insertion of 3D printed dental implants.

Claims

1. A lathe spring chuck for 3D printing implant processing, characterized in that: The invention comprises an adjusting cover body (1) threadedly connected to a machine tool spindle and a chuck body (2), wherein the front end of the machine tool spindle is provided with a central insertion hole adapted to the chuck body (2), the middle part of the front end surface of the chuck body (2) is provided with an implant receiving groove (21), the front part of the chuck body (2) is an elastic member, a plurality of openings are evenly arranged on the outer wall of the elastic member along the circumference of the chuck body (2), a conical block (22) is arranged in the middle part of the outer wall of the elastic member, and the outer diameter of the conical block (22) is 1.1mm. The outer diameter of the conical block (22) decreases from front to back, and the minimum outer diameter of the conical block (22) is not less than the outer diameter of the elastic member. A center hole adapted to the front end of the elastic member is provided in the middle of the chuck body (2). The front end surface of the conical block (22) abuts against the adjusting cover body (1). The chuck body (2) is locked on the main shaft of the machine tool by adjusting the cover body (1). The adjusting cover body (1) is rotated to press the conical block (22) on the elastic member into the center insertion hole, thereby locking the 3D printed implant in the implant receiving groove (21).

2. A lathe spring chuck for 3D printing implant processing according to claim 1, characterized in that: The inner diameter of the entrance opening of the implant receiving groove (21) gradually decreases from the outside to the inside.

3. The lathe spring chuck for 3D printing implant processing according to claim 1, characterized in that: A second inclined surface (23) and a first inclined surface (24) are sequentially arranged from outside to inside in the entrance of the implant receiving groove (21).

4. A lathe spring chuck for 3D printing implant processing according to claim 3, characterized in that: The included angles between the second inclined surface (23), the first inclined surface (24) and the axis of the chuck body (2) are 0.1-5°.

5. A lathe spring chuck for 3D printing implant processing according to claim 4, characterized in that: The first inclined surface (24) is a rough surface.

6. A lathe spring chuck for 3D printing implant processing according to claim 5, characterized in that: The surface roughness of the rough surface is 8-15.

7. A lathe spring chuck for 3D printing implant processing according to claim 1, characterized in that: The implant receiving groove (21) is provided with a thread avoidance groove adapted to the 3D printed implant.

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