Rotary table structure of five-axis numerical control machine tool

Abstract

The utility model belongs to the field of rotary table structures, and particularly relates to a rotary table structure of a five-axis numerical control machine tool, which comprises an equipment box, a lifting plate is slidably connected inside the equipment box, a driving shaft is mounted at the center inside the lifting plate through a bearing, and the upper end of the driving shaft is fixedly connected with a rotary table. A clamping disc is fixedly connected to the upper end of the rotary disc, a stabilizing mechanism is arranged on the lifting plate, a frame is fixedly connected to the lower end of the lifting plate, a hinge seat is fixedly connected to the lower end of the frame, and two symmetrically-distributed screw rods are installed on the lower portion of the inner wall of the equipment box through bearings. The lifting plate is additionally provided with the balls, the supporting frame, the driving shaft and other structures, in the using process, the driving shaft and the balls can support the rotating disc in a dual mode, and therefore the rotating disc can be prevented from deflecting after being stressed, and the rotating precision of the rotating disc can be further improved through cooperation between the small gear and the gear disc.

Description

Technical Field

[0001] This utility model relates to the field of rotary table structure technology, specifically a rotary table structure for a five-axis CNC machine tool. Background Technology

[0002] Five-axis CNC machine tools are core equipment in high-end manufacturing. They enable simultaneous and coordinated movement of the tool along five degrees of freedom (X, Y, and Z axes for linear motion and any two rotational axes A, B, and C) via computer program control, allowing for the machining of complex surfaces and high-precision parts. During operation, the workpiece needs to be rotated via a turntable structure. However, existing turntable structures suffer from instability, which can affect machining accuracy, especially since the cutting tool needs to machine the workpiece. Furthermore, adjusting the turntable's support height according to the workpiece's specific height is inconvenient, thus limiting the machine tool's degrees of freedom. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a rotary table structure for a five-axis CNC machine tool, which solves the problems of unstable rotation of the rotary table and inconvenience in adjusting the height of the rotary table.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rotary table structure for a five-axis CNC machine tool, comprising an equipment box, a lifting plate slidably connected inside the equipment box, a drive shaft mounted on the center of the lifting plate via a bearing, a turntable fixedly connected to the upper end of the drive shaft, a clamping plate fixedly connected to the upper end of the turntable, a stabilizing mechanism provided on the lifting plate, a frame fixedly connected to the lower end of the lifting plate, a hinge seat fixedly connected to the lower end of the frame, two symmetrically distributed screws mounted on the lower part of the inner wall of the equipment box via bearings, a threaded bracket connected to the outer side of the screws via threads, a bracket hinged to the upper end of the threaded bracket, and a dual-axis motor fixedly connected to the bottom inner side of the equipment box.

[0005] Preferably, the inner wall of the equipment box is fixedly connected with two symmetrically distributed guide bars, which are slidably connected to the lifting plate and can guide the movement of the lifting plate.

[0006] Preferably, the bracket is hinged to the hinge seat, and the output shaft of the dual-axis motor is fixedly connected to the screw, so that the dual-axis motor can drive the screw to rotate.

[0007] Preferably, a guide bar is fixedly connected to the bottom inner side of the equipment box, and the guide bar is slidably connected to the threaded frame, so that the guide bar can guide the movement of the threaded frame.

[0008] Preferably, a support frame is fixedly connected to the bottom inner side of the equipment box. The support frame is connected to the screw through a bearing. The support frame can be supported by the screw to reduce the force on the motor output shaft.

[0009] Preferably, the stabilizing mechanism includes a gear disk, the gear disk is fixedly connected to the lower outer side of the drive shaft, a pinion is mounted on the lower end of the lifting plate via a bearing, a drive motor is fixedly mounted on the inner side of the frame, a plurality of evenly distributed balls are arranged inside the groove of the lifting plate, a support frame is provided on the outer side of the plurality of balls, the balls are in contact with the turntable, and the support frame can limit the spacing between the balls.

[0010] Preferably, the output shaft of the drive motor is fixedly connected to the pinion, and the pinion meshes with the gear disk. The pinion can rotate multiple times to drive the gear disk to rotate one revolution, which can improve the rotation accuracy of the turntable.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model adds a structure such as ball bearings, support frame and drive shaft to the lifting plate. During use, the turntable can be doubly supported by the drive shaft and ball bearings, which can prevent the turntable from deflecting after being subjected to force. Furthermore, the rotation accuracy of the turntable can be further improved by the cooperation between the pinion and the gear plate.

[0013] 2. This utility model adds a screw, threaded frame and bracket structure inside the equipment box. During use, the screw and threaded frame can drive the bracket to deflect. During the deflection, the bracket can drive the lifting plate to move, so the height of the clamping plate can be adjusted by the movement of the lifting plate. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 A partial three-dimensional structural diagram;

[0016] Figure 3 For the present utility model Figure 1 A front sectional view;

[0017] Figure 4 For the present utility model Figure 2 Enlarged view of the structure of part A.

[0018] In the diagram: 1. Equipment box; 2. Lifting plate; 3. Drive shaft; 4. Turntable; 5. Clamping plate; 6. Stabilizing mechanism; 7. Frame; 8. Guide bar; 9. Hinge seat; 10. Screw; 11. Threaded bracket; 12. Bracket; 13. Dual-axis motor; 14. Guide bar; 15. Support frame; 61. Gear disk; 62. Pinion; 63. Drive motor; 64. Ball bearing; 65. Support frame. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 2 , Figure 3 A rotary table structure for a five-axis CNC machine tool includes an equipment box 1. A lifting plate 2 is slidably connected inside the equipment box 1. A drive shaft 3 is mounted on the center of the lifting plate 2 via a bearing. A turntable 4 is fixedly connected to the upper end of the drive shaft 3. A clamping plate 5 is fixedly connected to the upper end of the turntable 4. A stabilizing mechanism 6 is provided on the lifting plate 2. A frame 7 is fixedly connected to the lower end of the lifting plate 2. A hinge seat 9 is fixedly connected to the lower end of the frame 7. Two symmetrically distributed screws 10 are mounted on the lower part of the inner wall of the equipment box 1 via bearings. A threaded bracket 11 is threadedly connected to the outer side of the screws 10. A bracket 12 is hinged to the upper end of the threaded bracket 11. A dual-axis motor 13 is fixedly connected to the bottom inner side of the equipment box 1.

[0021] Please see Figure 1 , Figure 2 , Figure 3 Two symmetrically distributed guide bars 8 are fixedly connected to the inner wall of the equipment box 1. The guide bars 8 are slidably connected to the lifting plate 2. The guide bars 8 can guide the movement of the lifting plate 2. The bracket 12 is hinged to the hinge seat 9. The output shaft of the dual-axis motor 13 is fixedly connected to the screw 10. The dual-axis motor 13 can drive the screw 10 to rotate. A guide bar 14 is fixedly connected to the inner bottom of the equipment box 1. The guide bar 14 is slidably connected to the threaded frame 11. The guide bar 14 can guide the movement of the threaded frame 11. A support frame 15 is fixedly connected to the inner bottom of the equipment box 1. The support frame 15 is connected to the screw 10 through a bearing. The support frame 15 can support the screw 10 and reduce the force on the motor output shaft.

[0022] Please see Figure 1 , Figure 2 , Figure 4The stabilizing mechanism 6 includes a gear disk 61. The gear disk 61 is fixedly connected to the lower outer side of the drive shaft 3. A pinion 62 is mounted on the lower end of the lifting plate 2 via a bearing. A drive motor 63 is fixedly mounted on the inner side of the frame 7. Multiple evenly distributed balls 64 are arranged inside the groove of the lifting plate 2. A support frame 65 is provided on the outer side of the multiple balls 64. The balls 64 contact the turntable 4. The support frame 65 can limit the spacing of the balls 64. The output shaft of the drive motor 63 is fixedly connected to the pinion 62. The pinion 62 meshes with the gear disk 61. The pinion 62 can drive the gear disk 61 to rotate once by rotating multiple times, which can improve the rotation accuracy of the turntable 4.

[0023] The specific implementation process of this utility model is as follows: When in use, the dual-axis motor 13 is started, and the dual-axis motor 13 drives the screw 10 to rotate. During the rotation of the screw 10, the screw 10 drives the bracket 12 to deflect through the threaded engagement with the threaded frame 11. During the deflection of the bracket 12, the lifting plate 2 above the frame 7 can be moved through the hinge with the hinge seat 9. During the movement of the lifting plate 2, the clamping height of the clamping plate 5 can be adjusted, thereby making the turntable structure more suitable.

[0024] When it is necessary to rotate the workpiece above the clamping plate 5, the drive motor 63 is started. The drive motor 63 drives the pinion 62 to rotate. The pinion 62 drives the turntable 4 above the drive shaft 3 and the clamping plate 5 to rotate through the meshing between the pinion 62 and the gear plate 61. The workpiece above the clamping plate 5 can be adjusted. During the adjustment process, the turntable 4 can be supported by the rolling of the ball bearing 64, so that the rotation of the turntable 4 can be more stable.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary table structure for a five-axis CNC machine tool, comprising an equipment housing (1), characterized in that: The equipment box (1) is slidably connected to a lifting plate (2). A drive shaft (3) is installed at the center of the lifting plate (2) via a bearing. A turntable (4) is fixedly connected to the upper end of the drive shaft (3). A clamping plate (5) is fixedly connected to the upper end of the turntable (4). A stabilizing mechanism (6) is provided on the lifting plate (2). A frame (7) is fixedly connected to the lower end of the lifting plate (2). A hinge seat (9) is fixedly connected to the lower end of the frame (7). Two symmetrically distributed screws (10) are installed on the lower part of the inner wall of the equipment box (1) via a bearing. A threaded bracket (11) is threadedly connected to the outer side of the screws (10). A bracket (12) is hinged to the upper end of the threaded bracket (11). A dual-axis motor (13) is fixedly connected to the bottom of the inner side of the equipment box (1).

2. The rotary table structure of a five-axis CNC machine tool according to claim 1, characterized in that: The inner wall of the equipment box (1) is fixedly connected to two symmetrically distributed guide bars (8), and the guide bars (8) are slidably connected to the lifting plate (2).

3. The rotary table structure of a five-axis CNC machine tool according to claim 1, characterized in that: The bracket (12) is hinged to the hinge seat (9), and the output shaft of the dual-axis motor (13) is fixedly connected to the screw (10).

4. The rotary table structure of a five-axis CNC machine tool according to claim 1, characterized in that: A guide bar (14) is fixedly connected to the bottom inner side of the equipment box (1), and the guide bar (14) is slidably connected to the threaded frame (11).

5. The rotary table structure of a five-axis CNC machine tool according to claim 1, characterized in that: A support frame (15) is fixedly connected to the bottom inner side of the equipment box (1), and the support frame (15) is connected to the screw (10) through a bearing.

6. The rotary table structure of a five-axis CNC machine tool according to claim 1, characterized in that: The stabilizing mechanism (6) includes a gear disk (61), the gear disk (61) is fixedly connected to the lower outer side of the drive shaft (3), a small gear (62) is installed at the lower end of the lifting plate (2) through a bearing, a drive motor (63) is fixedly installed on the inner side of the frame (7), a plurality of evenly distributed balls (64) are arranged inside the groove of the lifting plate (2), a support frame (65) is arranged on the outer side of the plurality of balls (64), and the balls (64) are in contact with the turntable (4).

7. The rotary table structure of a five-axis CNC machine tool according to claim 6, characterized in that: The output shaft of the drive motor (63) is fixedly connected to the pinion (62), and the pinion (62) meshes with the gear disk (61).

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