阅读说明：本技术 一种3d打印义齿金属件的打印成型装置和补偿方法 (Printing forming device and compensation method for 3D printing of denture metal part ) 是由 胡啸笛 于 2021-08-16 设计创作，主要内容包括：本发明涉及义齿加工技术领域,具体为一种3D打印义齿金属件的打印成型装置,包括成型装置,所述成型装置的内部焊接固定有成型台,所述成型台的上端即成型装置的上顶面上活动安装有打印喷头,所述成型台的两端固定安装有两个电动伸缩杆,且与电动伸缩杆向垂直的方向上焊接固定有两个导轨杆,所述导轨杆上开设有安装槽,本发明还涉及一种3D打印义齿金属件的打印成型装置的义齿金属件尺寸补偿方法：步骤一选取试验水平值,步骤二计算平均值,步骤三计算相对误差值,步骤四构建尺寸收缩误差补偿模型,步骤五进行3D打印成型。(The invention relates to the technical field of artificial tooth processing, in particular to a 3D printing forming device for printing artificial tooth metal parts, which comprises a forming device, wherein a forming table is fixedly welded inside the forming device, a printing spray head is movably arranged at the upper end of the forming table, namely the upper top surface of the forming device, two electric telescopic rods are fixedly arranged at two ends of the forming table, two guide rail rods are fixedly welded in the direction vertical to the electric telescopic rods, and installation grooves are formed in the guide rail rods, and the invention also relates to a dimension compensation method for the artificial tooth metal parts of the 3D printing forming device for printing the artificial tooth metal parts, which comprises the following steps: selecting a test horizontal value, calculating an average value in the step two, calculating a relative error value in the step three, constructing a size shrinkage error compensation model in the step four, and performing 3D printing and forming in the step five.)

1. The utility model provides a 3D prints printing forming device of artificial tooth metalwork, includes forming device (1), its characterized in that: the inner welding of the forming device (1) is fixed with a forming table (11), the upper end of the forming table (11), namely the upper top surface of the forming device (1), is movably provided with a printing nozzle (12), two ends of the forming table (11) are fixedly provided with two electric telescopic rods (13), and are welded and fixed with the electric telescopic rods (13) in the vertical direction to form two guide rail rods (14), a mounting groove (141) is formed in each guide rail rod (14), a plurality of rotating wheels (142) are mounted in the mounting groove (141), the upper end of each electric telescopic rod (13) is fixedly connected with a support ring frame (2), the number of the support ring frames (2) is two, the end surfaces of the two support ring frames (2) are welded and fixed together to form a support ring, an annular moving groove (21) is formed in the inner side of each support ring frame (2), and a rotating device is inserted in the annular moving groove (21), the rotating device is provided with a heat dissipation device, two guide holes (22) are symmetrically formed in the position, close to the edge, of the support ring frame (2), and guide rail rods (14) are inserted in the guide holes (22).

2. The printing and forming device for 3D printing of the denture metal piece according to claim 1, wherein: the rotating device comprises a gear ring (3), an annular blocking strip (4) and steel balls (9), a support (31) is fixedly arranged inside the gear ring (3), a bearing hole (311) is formed in the support (31), and annular teeth (32) are fixedly arranged at the upper end of the gear ring (3).

3. The printing and forming device for 3D printing of the denture metal piece according to claim 2, wherein: the gear ring is characterized in that a movable boss (33) is fixedly welded on the side face of the gear ring (3), an insertion groove (331) is formed in the movable boss (33), and a plurality of spherical holes (332) are uniformly formed in the insertion groove (331).

4. The printing and forming device for 3D printing of the denture metal piece according to claim 3, wherein: the ball-shaped hole (332) is inserted with a steel ball (9), the diameter of the steel ball (9) is slightly smaller than that of the ball-shaped hole (332), an annular blocking strip (4) is fixedly arranged at the notch of the insertion groove (331), a plurality of conical holes (41) are formed in the annular blocking strip (4), and the steel ball (9) is inserted in the conical holes (41).

5. The printing and forming device for 3D printing of the denture metal piece according to claim 1, wherein: the heat dissipation device comprises a motor shaft (5), a bearing (6), a heat dissipation fan (7) and a fan cover (8), wherein the motor shaft (5) is installed in a bearing hole (311) in a support (31) through the bearing (6), a gear column (51) is fixedly arranged on the motor shaft (5), and the gear column (51) is meshed with annular teeth (32).

6. The printing and forming device for 3D printing of the denture metal piece according to claim 5, wherein: the heat dissipation fan (7) is fixedly arranged at the front end of the motor shaft (5), and the heat dissipation fan (7) is arranged at the front end of the support (31).

7. The printing and forming device for 3D printing of the denture metal piece according to claim 5, wherein: fan housing (8) fixed mounting is on the preceding terminal surface of support (31), and fan housing (8) cover the front end at radiator fan (7), the fixed a plurality of play tuber pipes (81) that are provided with on the preceding terminal surface of fan housing (8), the front end integrated into one piece of play tuber pipe (81) is provided with toper air-out head (82).

8. A denture metal part size compensation method for a 3D printing and forming device of a denture metal part according to any one of claims 1 to 7, comprising the following steps:

the method comprises the following steps: respectively selecting n test horizontal values for the height, width and length of the structural parameters of the false tooth to perform full factor test design, and performing a 3D printing forming test on the false tooth obtained by each full factor test design;

step two: labeling the samples obtained in the step of the 3D printing forming test, measuring the height, the width and the length of each group of samples for multiple times by using a digital display vernier caliper, and respectively calculating the average value of the height, the width and the length of each group of samples;

step three: respectively calculating the height, width and length size shrinkage relative error values of each group of samples according to the average values of the height, width and length of the samples calculated in the step two;

step four: according to the height, width and length size shrinkage relative error values of each group of samples calculated in the step three, applying data processing software to respectively carry out multivariate fitting and inspection on the height, width and length size shrinkage relative error values to obtain a size shrinkage error compensation model;

step five: inputting the height, width and length of the designed size of the denture metal part to be printed into the size error compensation model obtained in the fourth step, predicting the shrinkage relative error values of the height, width and length sizes, then compensating the height, width and length of the designed size of the denture metal part to be printed according to the predicted shrinkage relative error values of the height, width and length sizes to obtain the size of the compensated denture metal part, and then performing 3D printing molding by using the size of the compensated denture metal part.

Technical Field

The invention relates to the technical field of denture processing, in particular to a 3D printing forming device and a compensation method for a denture metal part.

Background

With the maturity of 3D printing technology, in order to improve the production efficiency of the false teeth, the 3D printing forming device is also applied to the false teeth processing field, the 3D printing and forming device under the prior art can not actively dissipate heat of the product when in use, so that the heat dissipation efficiency of the product is low, the device has certain limitation when in use, the rapid forming of the product is also influenced to a certain extent, in addition, when the 3D printing and forming device is used for printing products, due to the influence of the forming principle, the forming process and the like, even if the workpiece is subjected to 3D printing forming under more appropriate technological parameters, errors exist between the final forming size and the design size more or less, so that the size error compensation is performed on the 3D printing false tooth metal part under different structural parameters, and the method has important significance for improving the size precision of the false tooth metal part.

Therefore, a printing forming device and a compensation method for 3D printing of the denture metal part are provided to solve the defects.

Disclosure of Invention

The invention aims to provide a printing forming device and a compensation method for 3D printing of a denture metal part, and the device and the compensation method are used for solving the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a printing forming device for 3D printing of an artificial tooth metal part comprises a forming device, wherein a forming table is fixedly welded inside the forming device, a printing nozzle is movably mounted at the upper end of the forming table, namely the upper top surface of the forming device, two electric telescopic rods are fixedly mounted at two ends of the forming table, two guide rail rods are fixedly welded in the direction perpendicular to the electric telescopic rods, a mounting groove is formed in each guide rail rod, a plurality of rotating wheels are mounted in the mounting groove, a supporting ring frame is fixedly connected to the upper end of each electric telescopic rod, the two supporting ring frames are welded and fixed together to form a supporting ring, an annular moving groove is formed in the inner side of each supporting ring frame, a rotating device is inserted in each annular moving groove, a heat dissipation device is mounted on each rotating device, two guide holes are symmetrically formed in positions, close to the edges, on each supporting ring frame, and a guide rail rod is inserted in the guide hole.

Preferably, the rotating device comprises a gear ring, an annular barrier strip and steel balls, a support is fixedly arranged inside the gear ring, a bearing hole is formed in the support, and annular teeth are fixedly arranged at the upper end of the gear ring.

Preferably, a movable boss is welded and fixed on the side face of the gear ring, an insertion groove is formed in the movable boss, and a plurality of spherical holes are uniformly formed in the insertion groove.

Preferably, the ball-shaped hole is inserted with a steel ball, the diameter of the steel ball is slightly smaller than that of the ball-shaped hole, an annular blocking strip is fixedly arranged at the notch of the insertion groove, a plurality of conical holes are formed in the annular blocking strip, and the steel ball is inserted in the conical holes.

Preferably, the heat dissipation device comprises a motor shaft, a bearing, a heat dissipation fan and a fan cover, the motor shaft is mounted in a bearing hole in the support through the bearing, a gear column is fixedly arranged on the motor shaft, and the gear column is meshed with the annular teeth.

Preferably, the heat dissipation fan is fixedly installed at the front end of the motor shaft, and the heat dissipation fan is located at the front end of the bracket.

Preferably, the fan housing is fixedly mounted on the front end face of the support, the fan housing covers the front end of the heat dissipation fan, a plurality of air outlet pipes are fixedly arranged on the front end face of the fan housing, and a conical air outlet head is integrally formed at the front ends of the air outlet pipes.

A denture metal part size compensation method of a printing and forming device for 3D printing of the denture metal part comprises the following operation steps:

the method comprises the following steps: respectively selecting n test horizontal values for the height, width and length of the structural parameters of the false tooth to perform full factor test design, and performing a 3D printing forming test on the false tooth obtained by each full factor test design;

step two: labeling the samples obtained in the step of the 3D printing forming test, measuring the height, the width and the length of each group of samples for multiple times by using a digital display vernier caliper, and respectively calculating the average value of the height, the width and the length of each group of samples;

step three: respectively calculating the height, width and length size shrinkage relative error values of each group of samples according to the average values of the height, width and length of the samples calculated in the step two;

step four: according to the height, width and length size shrinkage relative error values of each group of samples calculated in the step three, applying data processing software to respectively carry out multivariate fitting and inspection on the height, width and length size shrinkage relative error values to obtain a size shrinkage error compensation model;

step five: inputting the height, width and length of the designed size of the denture metal part to be printed into the size error compensation model obtained in the fourth step, predicting the shrinkage relative error values of the height, width and length sizes, then compensating the height, width and length of the designed size of the denture metal part to be printed according to the predicted shrinkage relative error values of the height, width and length sizes to obtain the size of the compensated denture metal part, and then performing 3D printing molding by using the size of the compensated denture metal part.

Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:

1. the heat dissipation device is arranged in the 3D forming device, and can uniformly and effectively dissipate heat of the false tooth under the driving of the motor, so that the false tooth is helped to be quickly cooled, the heat dissipation efficiency of the false tooth is improved, the false tooth is helped to be quickly formed, and the working efficiency of the forming device is further improved;

2. the compensation method can greatly improve the size precision of false tooth processing, improve the yield of false teeth, and enable the 3D printing forming device to have better working effect and enhance the practicability of the device.

Drawings

FIG. 1 is an exploded view of a molding apparatus;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is an enlarged schematic view at B of FIG. 1;

FIG. 4 is a schematic view of a ring gear configuration;

fig. 5 is a schematic structural view of the fan cover.

In the figure: 1. a molding device; 11. a forming table; 12. printing a spray head; 13. an electric telescopic rod; 14. a guide rail rod; 141. mounting grooves; 142. a rotating wheel; 2. a support ring frame; 21. an annular moving groove; 22. a guide hole; 3. a ring gear; 31. a support; 311. a bearing bore; 32. an annular tooth; 33. moving the boss; 331. inserting grooves; 332. a spherical hole; 4. an annular barrier strip; 41. a tapered hole; 5. a motor shaft; 51. a gear post; 6. a bearing; 7. a heat radiation fan; 8. a fan housing; 81. an air outlet pipe; 82. a conical air outlet head; 9. and (5) steel balls.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution:

a printing and forming device for 3D printing of an artificial tooth metal part comprises a forming device 1, a forming table 11 is fixedly welded inside the forming device 1, a printing spray head 12 is movably mounted at the upper end of the forming table 11, namely, on the upper top surface of the forming device 1, two electric telescopic rods 13 are fixedly mounted at two ends of the forming table 11, two guide rail rods 14 are fixedly welded in a direction perpendicular to the electric telescopic rods 13, a mounting groove 141 is formed in each guide rail rod 14, a plurality of rotating wheels 142 are mounted in each mounting groove 141, a support ring frame 2 is fixedly connected at the upper end of each electric telescopic rod 13, the two support ring frames 2 are welded and fixed together to form a support ring, an annular moving groove 21 is formed in the inner side of each support ring frame 2, a rotating device is inserted in each annular moving groove 21 and comprises a gear ring 3, an annular stop strip 4 and steel balls 9, a support 31 is fixedly arranged inside each gear ring 3, bearing holes 311 are formed in the support 31, the upper end of the gear ring 3 is fixedly provided with annular teeth 32, the support 31 is connected with the gear ring 3 in a welding mode, and the height of the bearing holes 311 in the support 31 is higher than that of the gear ring 3.

A movable boss 33 is welded and fixed on the side surface of the gear ring 3, an insertion groove 331 is formed in the movable boss 33, a plurality of ball-shaped holes 332 are uniformly formed in the insertion groove 331, and the height of the insertion groove 331 is slightly larger than the diameter of the ball-shaped hole 332.

The steel ball 9 is inserted in the spherical hole 332, the diameter of the steel ball 9 is slightly smaller than that of the spherical hole 332, the annular barrier strip 4 is fixedly arranged at the notch of the insertion groove 331, a plurality of tapered holes 41 are formed in the annular barrier strip 4, the steel ball 9 is inserted in the tapered holes 41, the annular barrier strip 4 is fixedly welded on the notch of the insertion groove 331, the end, with the small diameter, of the tapered hole 41 faces the inside of the insertion groove 331, the steel ball 9 protrudes out of one part of the annular barrier strip 4, and the steel ball 9 can freely rotate in the tapered hole 41.

The rotating device is provided with a heat dissipation device which comprises a motor shaft 5, a bearing 6, a heat dissipation fan 7 and a fan cover 8, the motor shaft 5 is installed in a bearing hole 311 on the support 31 through the bearing 6, a gear column 51 is fixedly arranged on the motor shaft 5, the gear column 51 is meshed with the annular teeth 32, the gear column 51 and the motor shaft 5 are connected in a welding mode, the heat dissipation fan 7 is fixedly installed at the front end of the motor shaft 5, and the heat dissipation fan 7 is located at the front end of the support 31.

The fan housing 8 is fixedly mounted on the front end face of the support 31, the fan housing 8 covers the front end of the heat dissipation fan 7, the front end face of the fan housing 8 is fixedly provided with a plurality of air outlet pipes 81, the front ends of the air outlet pipes 81 are integrally formed to be provided with conical air outlet heads 82, and the fan housing 8 and the support 31 are in welded connection and can ensure the sealing performance of a welding position.

Two guide holes 22 are symmetrically formed in the position, close to the edge, of the support ring frame 2, and the guide rail rods 14 are inserted into the guide holes 22.

A denture metal part size compensation method of a printing and forming device for 3D printing of the denture metal part comprises the following operation steps:

the method comprises the following steps: respectively selecting n test horizontal values for the height, width and length of the structural parameters of the false tooth to perform full factor test design, and performing a 3D printing forming test on the false tooth obtained by each full factor test design;

step two: labeling the samples obtained in the step of the 3D printing forming test, measuring the height, the width and the length of each group of samples for multiple times by using a digital display vernier caliper, and respectively calculating the average value of the height, the width and the length of each group of samples;

step three: respectively calculating the height, width and length size shrinkage relative error values of each group of samples according to the average values of the height, width and length of the samples calculated in the step two;

step four: according to the height, width and length size shrinkage relative error values of each group of samples calculated in the step three, applying data processing software to respectively carry out multivariate fitting and inspection on the height, width and length size shrinkage relative error values to obtain a size shrinkage error compensation model;

step five: inputting the height, width and length of the designed size of the denture metal part to be printed into the size error compensation model obtained in the fourth step, predicting the shrinkage relative error values of the height, width and length sizes, then compensating the height, width and length of the designed size of the denture metal part to be printed according to the predicted shrinkage relative error values of the height, width and length sizes to obtain the size of the compensated denture metal part, and then performing 3D printing molding by using the size of the compensated denture metal part.

The working principle is as follows: when the heat dissipation needs to be performed on the denture, the electric telescopic rod 13 is started to enable the support ring frame 2 to move upwards so that the gear ring 3 is sleeved on the outer side of the denture, the guide rail rod 14 can play a role in guiding the support ring frame 2, the rotating wheel 142 arranged on the guide rail rod 14 enables the support ring frame 2 to move more smoothly, when the support ring frame 2 moves to a working position, the motor in the prior art can be started to drive the motor shaft 5 to rotate, and further the heat dissipation fan 7 can be driven to rotate to perform the heat dissipation work on the denture, and when the motor shaft 5 rotates, as the gear post 51 is meshed with the annular tooth 32, the gear ring 3 is driven to rotate under the action of the gear post 51, and as the heat dissipation fan 7 is arranged on the gear ring 3, the heat dissipation fan 7 can also rotate along with the gear ring 3, and the gear ring 3 is positioned on the outer side of the denture, and then can all-round even every position to the artificial tooth carry out the work of dispelling the heat for the radiating efficiency of artificial tooth improves, and the produced wind-force of radiator fan 7 blows to the artificial tooth through a plurality of play tuber pipes 81 on the fan housing 8, and the cross sectional area who goes out tuber pipe 81 diminishes under the effect of toper play wind-out head 82 makes wind-force blow out from toper play wind-out head 82 in the wind speed obtain further promotion, and then makes the radiating effect better.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.