CN212592538U

CN212592538U - Open dental model scanner

Info

Publication number: CN212592538U
Application number: CN202020513702.0U
Authority: CN
Inventors: 程勋; 徐华风; 张乐健; 边瑞光; 丁旭; 蔡志鹏
Original assignee: Inbert Shanghai Medical Technology Co ltd
Current assignee: Inbert Shanghai Medical Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-02-26
Anticipated expiration: 2030-04-09

Abstract

The utility model relates to an open dental model scanner, including the frame, frame upper portion is equipped with the scanning host computer, and the frame is equipped with carousel and drive the first actuating mechanism that the carousel rotated, and the terminal surface off-centre of carousel is equipped with the base, is equipped with the objective table that is used for the suction type model on the base, the base with the carousel along the setting of sliding of carousel radial direction, be equipped with between carousel and the base and be used for driving the second actuating mechanism that the base slided, the lateral wall of objective table is equipped with along the dwang that the carousel radial direction set up, the dwang with the base is connected around self axis rotation, the base is equipped with the third actuating mechanism that is used for driving the dwang rotation; the utility model discloses the effect of the position adjustment precision of improvement model has.

Description

Open dental model scanner

Technical Field

The utility model belongs to the technical field of the technique of dentistry apparatus and specifically relates to an open dentistry model scanner is related to.

Background

The tooth scanner is a special device for scanning a tooth mold, is convenient for three-dimensional tooth modeling and false tooth processing, rapidly acquires three-dimensional model data of a tooth model in a photographing mode, manufactures a three-dimensional model of a defective tooth through a set of digital processing software, and then manufactures a false tooth. When scanning the tooth model, the tooth model needs to be clamped on a tooth scanner.

As shown in fig. 4, the conventional dental scanner includes a base 10, a scanning main machine 1 having a plurality of cameras is disposed on an upper portion of the base 10, the base 10 is provided with a vertically disposed rotary table 2 located below the scanning main machine 1 and a driving mechanism (not shown) for driving the rotary table 2 to rotate, a base 3 is eccentrically fixed on an end surface of the rotary table 2, and an objective table 4 for sucking a model is disposed on the base 3; the driving mechanism drives the turntable 2 to rotate, so that the model is driven to rotate by 360 degrees in the vertical direction, and the scanning host 1 can scan the model at multiple angles.

However, there may be an area that cannot be scanned once in the scanning process of the model, and at this time, an operator needs to move the position of the model so that the scanning host can scan the area, but the adjustment accuracy of the model is poor, so that the scanning accuracy is easily reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an open dental model scanner, its effect that has the position adjustment precision that improves the model.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an open dental model scanner, includes the frame, and frame upper portion is equipped with the scanning host computer, and the frame is equipped with carousel and drive carousel pivoted first actuating mechanism, the terminal surface off-centre of carousel is equipped with the base, is equipped with the objective table that is used for the suction-type model on the base, the base with the carousel is followed the setting is slided to the radial direction of carousel, be equipped with between carousel and the base and be used for the drive the second actuating mechanism that the base slided, the lateral wall of objective table is equipped with the edge the dwang that the radial direction of carousel set up, the dwang with the base rotates around self axis to be connected, the base is equipped with and is used for the drive dwang pivoted third actuating mechanism.

Adopt above-mentioned technical scheme, during the use, install the model on the objective table, then use the scanning host computer to begin to scan, scan the in-process, drive the model 360 rotations in vertical direction through first actuating mechanism, as the main scanning route, if meet the condition that the scanning can not arrive, start second actuating mechanism, the objective table that drives on the base moves the adjustment along carousel radial direction, or start third actuating mechanism, it revolves the rotation adjustment of rotating rod axis to drive the objective table, the effect of two kinds of adjustment modes superposes mutually, make the model have the position change of diversified multi-angle relatively to the scanning host computer, thereby ensure that the scanning host computer can carry out the all-round scanning to the model, and the position of objective table finely tunes through mechanical system, the adjustment precision is higher, thereby improve the scanning precision.

The present invention may be further configured in a preferred embodiment as: the base is fixed with the slider, the terminal surface of carousel is followed the radial direction of carousel has seted up the spout, the slider with the spout slides and is connected, second actuating mechanism is including being fixed in the second servo motor in the spout, the output shaft of second servo motor is fixed with the second lead screw, the second lead screw pass the slider and with slider threaded connection.

By adopting the technical scheme, the second servo motor is started, the rotating motion is changed into linear motion through the threaded connection of the second screw rod and the sliding block, so that the object stage on the base is driven to move along the radial direction of the turntable, and the position of the model is adjusted.

The present invention may be further configured in a preferred embodiment as: third actuating mechanism is including being fixed in the third servo motor of base, third servo motor's output shaft is fixed with the worm, the dwang cover is established and is fixed with the worm wheel, the worm wheel with the worm meshing.

Adopt above-mentioned technical scheme, start third servo motor, through worm gear transmission, drive the dwang and rotate around self axis to drive the rotation of objective table, thereby carry out angle adjustment to the model on the objective table.

The present invention may be further configured in a preferred embodiment as: the objective table orientation the side of base is fixed with the internal thread cover, the tip of dwang be equipped with the external screw thread of the internal thread looks adaptation of internal thread cover.

Adopt above-mentioned technical scheme, through the threaded connection of dwang and internal thread cover to realize the demountable installation between objective table and the base, thereby the not unidimensional change of objective table of being convenient for improves the suitability of whole device.

The present invention may be further configured in a preferred embodiment as: the internal thread of the internal thread sleeve is a rubber thread tooth sleeve.

Adopt above-mentioned technical scheme, because there is certain vibration among the servo motor operation process, can cause certain influence to the position precision of model promptly, consequently set up rubber thread facing, have the shock attenuation effect to the reduction is transmitted the vibration on the objective table by the dwang, has further improved the scanning precision.

The present invention may be further configured in a preferred embodiment as: the rubber thread tooth socket is of a hollow structure, and a steel wire is embedded in the hollow part of the rubber thread tooth socket.

Adopt above-mentioned technical scheme, the structural strength of rubber thread facing can be ensured to the steel wire to ensure the connection steadiness between objective table and the dwang.

The present invention may be further configured in a preferred embodiment as: the lateral wall of dwang is fixed with the fixed block, the slide opening has been seted up in the fixed block, follow in the slide opening length direction slides and is connected with the bolt, the global parcel of the tip of bolt has the rubber sleeve, the lateral wall of internal thread cover seted up with the keyway of the tip grafting of bolt.

By adopting the technical scheme, the positioning of the objective table is realized through the connection between the plug pin and the slot, so that the initial position of the objective table is positioned when the objective table is in threaded connection with the rotating rod, and the scanning precision is ensured; and through setting up the rubber sleeve, realize the elasticity scarf joint between bolt and the slot to avoid the condition that the bolt breaks away from the slot in the objective table position adjustment process.

The present invention may be further configured in a preferred embodiment as: the dwang with the base passes through the bearing and rotates and be connected, the precision of bearing is P2 level or P4 level.

By adopting the technical scheme, the rotation precision of the rotating rod can be ensured through the high-precision bearing, so that the rotation precision of the objective table is ensured, and the scanning precision is ensured; and the high precision of the microminiature bearing is easy to achieve (the size is small, namely the deformation amount of heat treatment is small, and the roundness is easy to control), the production cost is lower, and the cost of the whole device is better balanced.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the second driving mechanism and the third driving mechanism are arranged to realize position adjustment of two dimensions of the model on the objective table, and the effects of the two adjustment modes are overlapped, so that the model has multi-direction and multi-angle position change relative to the scanning host, the scanning host can carry out all-dimensional scanning on the model, the position of the objective table is finely adjusted in a mechanical mode, the adjustment precision is high, and the scanning precision is improved;

2. set up rubber thread facing, have the shock attenuation effect to reduce and transmitted the vibration on the objective table by the dwang, further improved the scanning precision.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment;

fig. 2 is a schematic diagram of the structure of the first drive mechanism of the present embodiment;

fig. 3 is an exploded view of the present embodiment for showing the connection relationship between the object stage and the rotating lever;

fig. 4 is a schematic diagram of a prior art structure.

In the figure, 1, a scanning host; 2. a turntable; 3. a base; 4. an object stage; 5. rotating the rod; 6. a second drive mechanism; 7. a third drive mechanism; 8. a first drive mechanism; 10. a machine base; 21. a rotating shaft; 41. an internal thread sleeve; 42. a rubber thread socket; 43. a steel wire; 44. a pin slot; 51. a fixed block; 52. a slide hole; 53. a bolt; 54. a rubber sleeve; 61. a second servo motor; 62. a second lead screw; 63. a chute; 64. a slider; 71. a third servo motor; 72. a worm; 73. a worm gear; 81. a first servo motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the open dental model scanner disclosed by the present invention comprises a base 10, a main scanning unit 1 is disposed on the upper portion of the base 10, the base 10 is provided with a turntable 2 and a first driving mechanism 8 (see fig. 2) for driving the turntable 2 to rotate, a base 3 is eccentrically disposed on the end surface of the turntable 2, and an objective table 4 for sucking and loading a model is disposed on the base 3; the base 3 is connected with the object stage 4 through a rotating rod 5, the rotating rod 5 is arranged along the radial direction of the turntable 2, one end of the rotating rod 5 is detachably fixed with the object stage 4, and the other end of the rotating rod 5 is rotatably connected with the base 3 around the axis of the base; a second driving mechanism 6 for driving the base 3 to slide along the radial direction of the rotary table 2 is arranged between the rotary table 2 and the base 3, and the base 3 is provided with a third driving mechanism 7 for driving the rotating rod 5 to rotate.

When the model scanning device is used, a model is installed on the object stage 4, then the scanning host machine 1 is used for starting scanning, and in the scanning process, the position of the model on the object stage 4 relative to the scanning host machine 1 is changed through the first driving mechanism 8, the second driving mechanism 6 and the third driving mechanism 7, so that the scanning host machine 1 can carry out all-dimensional scanning on the model.

As shown in fig. 2, the first driving mechanism 8 includes a first servo motor 81 fixed on the base 10, a rotating shaft 21 is fixed at the axis of the turntable 2, the rotating shaft 21 is rotatably connected with the base 10, and the first servo motor 81 drives the rotating shaft 21 to rotate through gear transmission.

As shown in fig. 1, a sliding block 64 is fixed on the base 3, a sliding groove 63 is formed in the end surface of the turntable 2 along the radial direction of the turntable 2, and the sliding block 64 is connected with the sliding groove 63 in a sliding manner; the second driving mechanism 6 comprises a second servo motor 61 fixed in the sliding chute 63, a second screw rod 62 is fixed on an output shaft of the second servo motor 61, the second screw rod 62 penetrates through a sliding block 64, and the second screw rod 62 is in threaded connection with the sliding block 64; and starting the second servo motor 61, and changing the rotation motion into linear motion through the threaded connection of the second screw rod 62 and the sliding block 64 so as to drive the object stage 4 on the base 3 to move along the radial direction of the turntable 2, thereby adjusting the position of the model.

As shown in fig. 1, the third driving mechanism 7 includes a third servo motor 71 fixed on the base 3, a worm 72 is fixed on an output shaft of the third servo motor 71, a worm wheel 73 is fixed on the rotating rod 5, and the worm wheel 73 is meshed with the worm 72; the third servo motor 71 is driven by a worm wheel 73 and a worm 72 to drive the rotating rod 5 to rotate around the axis of the third servo motor, so that the position of the model on the object stage 4 is adjusted; and the rotating rod 5 is rotatably connected with the base 3 through a bearing, the precision of the bearing is preferably P2 grade, so as to ensure the rotating precision of the rotating rod 5 and further ensure the scanning precision.

Since there is inevitable minute vibration during the operation of the second servomotor 61 and the third servomotor 71, that is, there is a certain influence on the positional accuracy of the model, it is provided that, as shown in fig. 3, the side of the stage 4 facing the base 3 is fixed with the female thread bush 41, the female thread of the female thread bush 41 is a rubber thread bush 42, and the end of the rotating lever 5 is provided with a male thread adapted to the female thread of the female thread bush 41; the rubber thread tooth socket 42 made of rubber has a damping effect, and can reduce the vibration transmitted to the object stage 4 by the rotating rod 5 so as to ensure the scanning precision; and the rubber thread tooth socket 42 is a hollow structure, and a steel wire 43 is embedded in the hollow part of the hollow structure to ensure the structural strength of the rubber thread tooth socket 42, so that the connection stability between the object stage 4 and the rotating rod 5 is ensured.

Meanwhile, as shown in fig. 3, a fixed block 51 is fixed on the side wall of the rotating rod 5, a sliding hole 52 is formed in the fixed block 51, a bolt 53 is connected in the sliding hole 52 in a sliding manner along the length direction of the rotating rod 5, the circumferential surface of the end part of the bolt 53 is wrapped with a rubber sleeve 54, and a pin groove 44 is formed in the side wall of the internal thread sleeve 41; when with objective table 4 spiro union on dwang 5, treat that objective table 4 rotates to initial scanning position, the bolt 53 that slides makes its tip elasticity scarf joint in keyway 44 to the completion is to the location of objective table 4, thereby ensures that new objective table 4 homoenergetic is located initial position when changing objective table 4 at every turn, thereby ensures the precision of scanning.

The implementation principle of the embodiment is as follows: in the scanning process, the first servo motor 81 is started, the rotating shaft 21 is driven to rotate through gear transmission, and the model is driven to intermittently rotate in the vertical direction by 360 degrees through the turntable 2 to serve as a main scanning path;

if the model cannot be scanned and the position of the model needs to be adjusted, the position adjustment mode of the first dimension is as follows, a second servo motor 61 is started, and the base 3 is driven to move along the radial direction of the turntable 2 through the threaded connection of a second screw rod 62 and a sliding block 64, so that the distance position of the model on the objective table 4 is adjusted; the position adjustment mode of the second dimension is as follows, a third servo motor 71 is started, the worm wheel 73 and the worm 72 are used for transmission, the rotating rod 5 is driven to rotate around the axis of the rotating rod 5, and therefore the angle position of the model on the objective table 4 is adjusted;

the effect of two kinds of adjustment methods superposes mutually for model relatively scans the position change that host computer 1 has diversified multi-angle, thereby ensures that scanning host computer 1 can carry out all-round scanning to the model, and the position of objective table 4 finely tunes through mechanical system, and the adjustment precision is higher, thereby improves the scanning precision.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an open dental model scanner, includes frame (10), and frame (10) upper portion is equipped with scanning host computer (1), and frame (10) are equipped with carousel (2) and drive carousel (2) pivoted actuating mechanism (8), the terminal surface off-centre of carousel (2) is equipped with base (3), is equipped with objective table (4) that are used for the suction type model on base (3), its characterized in that: base (3) with carousel (2) are followed carousel (2) radial direction slides and sets up, be equipped with between carousel (2) and base (3) and be used for the drive second actuating mechanism (6) that base (3) slided, the lateral wall of objective table (4) is equipped with the edge dwang (5) that carousel (2) radial direction set up, dwang (5) with base (3) rotate around self axis and are connected, base (3) are equipped with and are used for the drive dwang (5) pivoted third actuating mechanism (7).

2. The open dental model scanner of claim 1, wherein: the base (3) is fixed with slider (64), spout (63) have been seted up along the radial direction of carousel (2) to the terminal surface of carousel (2), slider (64) with spout (63) slide and are connected, second actuating mechanism (6) are including being fixed in second servo motor (61) in spout (63), the output shaft of second servo motor (61) is fixed with second lead screw (62), second lead screw (62) pass slider (64) and with slider (64) threaded connection.

3. The open dental model scanner of claim 1, wherein: third actuating mechanism (7) are including being fixed in third servo motor (71) of base (3), the output shaft of third servo motor (71) is fixed with worm (72), dwang (5) cover is established and is fixed with worm wheel (73), worm wheel (73) with worm (72) meshing.

4. The open dental model scanner of claim 3, wherein: objective table (4) orientation the side of base (3) is fixed with internal thread cover (41), the tip of dwang (5) be equipped with the external screw thread of the internal thread looks adaptation of internal thread cover (41).

5. The open dental model scanner of claim 4, wherein: the internal thread of the internal thread sleeve (41) is a rubber thread tooth sleeve (42).

6. The open dental model scanner of claim 5, wherein: the rubber thread tooth socket (42) is of a hollow structure, and a steel wire (43) is embedded in the hollow part of the rubber thread tooth socket (42).

7. The open dental model scanner of claim 4, wherein: the lateral wall of dwang (5) is fixed with fixed block (51), seted up slide opening (52) in fixed block (51), follow in slide opening (52) dwang (5) length direction slides and is connected with bolt (53), the global parcel of tip of bolt (53) has rubber sleeve (54), the lateral wall of internal thread cover (41) seted up with keyway (44) that the tip of bolt (53) was pegged graft.

8. The open dental model scanner of claim 3, wherein: the rotating rod (5) is rotatably connected with the base (3) through a bearing, and the precision of the bearing is P2 level or P4 level.