Five-axis device based on three-axis CNC

Abstract

The utility model relates to a five-axis device based on three-axis CNC (computer numerical control), which comprises a base mounted on a three-axis CNC machine, a first support plate and a second support plate which are oppositely arranged are arranged on the base, a rotating mechanism is arranged between the first support plate and the second support plate, and a clamp is mounted on the rotating mechanism. The two opposite sides of the rotating mechanism are fixedly connected with a first rotating shaft and a second rotating shaft which are rotationally connected with the first supporting plate and the second supporting plate correspondingly, the end, away from the rotating mechanism, of the first rotating shaft penetrates through the first supporting plate and is fixedly connected with a rotating plate, and a connecting shaft is fixedly connected to the rotating plate. A driving mechanism for driving the connecting shaft to do arc-shaped motion is mounted on the first supporting plate; according to the five-axis device, the function of a five-axis CNC machine is achieved, machining tasks of space curves and curved surfaces can be completed, the expensive five-axis CNC machine does not need to be purchased, the five-axis device is novel in structure and low in manufacturing cost and maintenance cost, and the production cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a five-axis device based on a three-axis CNC. Background Art

[0002] CNC machine is a machine tool that uses a computer to realize digital program control. It is widely used in the field of precision machining. CNC machines include three-axis, four-axis, and five-axis CNC machines. The three-axis CNC machine can move linearly in the three axes of X, Y, and Z. The four-axis CNC machine adds a rotating axis on the basis of the three-axis CNC machine, which can complete more complex processing tasks. The five-axis CNC machine adds a tilting axis on the basis of the four-axis CNC machine, which can complete the processing tasks of space curves and surfaces. The five-axis CNC machine has stronger processing capabilities than the three-axis CNC machine, but the price of purchasing a five-axis CNC machine is relatively expensive, and the maintenance cost of the five-axis CNC machine is high in the later stage, which greatly increases the production cost. Utility Model Content

[0003] The purpose of the utility model is to design a five-axis device based on a three-axis CNC so as to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A five-axis device based on a three-axis CNC comprises a base installed on a three-axis CNC machine, the base is provided with a first support plate and a second support plate arranged opposite to each other, a rotating mechanism is provided between the first support plate and the second support plate, a clamp is installed on the rotating mechanism, opposite sides of the rotating mechanism are respectively fixedly connected with a first rotating shaft and a second rotating shaft rotatably connected to the first support plate and the second support plate, one end of the first rotating shaft away from the rotating mechanism passes through the first support plate and is fixedly connected with a rotating plate, a connecting shaft is fixedly connected to the rotating plate, and a driving mechanism for driving the connecting shaft to make an arc motion is installed on the first support plate.

[0006] Furthermore, the rotating mechanism includes a reducer and a servo motor, the output end of the servo motor is connected to the input end of the reducer, and the clamp is installed on the output end of the reducer.

[0007] Furthermore, a three-jaw chuck is installed at the output end of the reducer, and the clamp is installed on the three-jaw chuck.

[0008] Furthermore, a first bearing and a second bearing are respectively mounted on the first support plate and the second support plate, the first rotating shaft is fixedly connected to the inner ring of the first bearing, and the second rotating shaft is fixedly connected to the inner ring of the second bearing.

[0009] Furthermore, the driving mechanism includes a cylinder and a push plate installed at the output end of the cylinder, the connecting shaft is a cylindrical structure, and the push plate is provided with a long groove that slides with the connecting shaft.

[0010] Furthermore, the workbench of the three-axis CNC machine is installed with a linear motor, and the base is installed on the mover of the linear motor.

[0011] The beneficial effects of the utility model are:

[0012] The fixture is driven to rotate by the rotating mechanism, and the driving mechanism drives the connecting shaft to move in an arc, so that the connecting shaft drives the first rotating shaft to rotate through the rotating plate, and then drives the rotating mechanism to tilt. The above is combined with the three-axis CNC machine to make linear movements in the three axes of X, Y, and Z, and the function of the five-axis CNC machine is realized. It can complete the processing tasks of spatial curves and surfaces without purchasing an expensive five-axis CNC machine. The structure of this five-axis device is novel, and the manufacturing cost and maintenance cost are low, which greatly reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of another perspective of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the utility model in which the rotating mechanism is respectively connected with the first bearing and the second bearing.

[0017] The names of the components marked in the figure are as follows:

[0018] 1. Base; 2. First support plate; 3. Second support plate; 4. Clamp; 5. First rotating shaft; 6. Second rotating shaft; 7. Rotating plate; 8. Connecting shaft; 9. Reducer; 10. Servo motor; 11. Three-jaw chuck; 12. First bearing; 13. Second bearing; 14. Cylinder; 15. Push plate; 16. Long slot; 17. Linear motor. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] like Figure 1-3 As shown, a five-axis device based on a three-axis CNC comprises a base 1 installed on a three-axis CNC machine, a first support plate 2 and a second support plate 3 are arranged opposite to each other on the base 1, a reducer 9 is arranged between the first support plate 2 and the second support plate 3, a first rotating shaft 5 and a second rotating shaft 6 are fixedly connected to opposite sides of the reducer 9, a first bearing 12 and a second bearing 13 are respectively installed on the first support plate 2 and the second support plate 3, the first rotating shaft 5 is fixedly connected to the inner ring of the first bearing 12, and the second rotating shaft 6 is fixedly connected to the inner ring of the second bearing 13, and the reducer 9 can realize the function of self-rotation through the rotational cooperation between the first rotating shaft 5 and the first bearing 12 and the rotational cooperation between the second rotating shaft 6 and the second bearing 13;

[0021] A three-jaw chuck 11 is installed at the output end of the reducer 9, and a fixture 4 is installed on the three-jaw chuck 11. A servo motor 10 is connected to the input end of the reducer 9. The servo motor 10 drives the three-jaw chuck 11 to rotate through the reducer 9, thereby driving the fixture 4 to rotate; the end of the first rotating shaft 5 away from the reducer 9 passes through the first supporting plate 2 and is fixedly connected to the rotating plate 7, and the rotating plate 7 is fixedly connected to the connecting shaft 8. A cylinder 14 is installed on the first supporting plate 2, and a push plate 15 is installed at the output end of the cylinder 14. The connecting shaft 8 is a cylindrical structure. The push plate 15 is provided with a long groove 16 that slides with the connecting shaft 8. The push plate 15 is pushed by the cylinder 14. When the push plate 15 performs linear motion, the long slot 16 will push the connecting shaft 8 to rotate in the long slot 16 and move along the length direction of the long slot 16, so that the connecting shaft 8 can realize arc motion. The connecting shaft 8 drives the first rotating shaft 5 to rotate through the rotating plate 7, and then drives the reducer 9 to perform tilting motion; the workbench of the three-axis CNC machine is equipped with a linear motor 17, and the base 1 is installed on the mover of the linear motor 17. Before processing, the position of the base 1 is adjusted by the linear motor 17 according to the shape and size of the product clamped by the clamp 4 to avoid the product from colliding with the protective cover of the three-axis CNC machine during the production and processing process.

[0022] Working principle:

[0023] like Figure 1-3As shown, before the five-axis device is used, the product to be processed is first clamped and fixed by the fixture 4, and then the position of the base 1 is adjusted by the linear motor 17 according to the shape and size of the product clamped by the fixture 4. After the position adjustment is completed, the five-axis device is started, and the servo motor 10 drives the three-jaw chuck 11 to rotate through the reducer 9, thereby driving the fixture 4 to rotate, and pushes the push plate 15 to perform linear motion through the cylinder 14. The long groove 16 will push the connecting shaft 8 to rotate in the long groove 16 and move along the length direction of the long groove 16, so that the connecting shaft 8 can realize arc motion. The connecting shaft 8 drives the first rotating shaft 5 to rotate through the rotating plate 7, and then drives the reducer 9 to tilt. The above is combined with the three-axis CNC machine to make linear movements in the three axes of X, Y, and Z, and realizes the function of the five-axis CNC machine, which can complete the processing tasks of spatial curves and curved surfaces without the need to purchase an expensive five-axis CNC machine. The structure of this five-axis device is novel, and the manufacturing cost and maintenance cost are low, which greatly reduces the production cost.

[0024] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A five-axis device based on three-axis CNC, characterized in that: The invention comprises a base (1) mounted on a three-axis CNC machine, wherein a first support plate (2) and a second support plate (3) are arranged opposite to each other on the base (1), a rotating mechanism is arranged between the first support plate (2) and the second support plate (3), a clamp (4) is installed on the rotating mechanism, a first rotating shaft (5) and a second rotating shaft (6) which are rotatably connected to the first support plate (2) and the second support plate (3) are respectively fixedly connected on opposite sides of the rotating mechanism, an end of the first rotating shaft (5) away from the rotating mechanism passes through the first support plate (2) and is fixedly connected to a rotating plate (7), a connecting shaft (8) is fixedly connected to the rotating plate (7), and a driving mechanism for driving the connecting shaft (8) to make an arc motion is installed on the first support plate (2).

2. The five-axis device based on three-axis CNC according to claim 1 is characterized in that: The rotating mechanism comprises a reducer (9) and a servo motor (10), the output end of the servo motor (10) is connected to the input end of the reducer (9), and the clamp (4) is installed on the output end of the reducer (9).

3. The five-axis device based on three-axis CNC according to claim 2 is characterized in that: A three-jaw chuck (11) is installed at the output end of the reducer (9), and the clamp (4) is installed on the three-jaw chuck (11).

4. The five-axis device based on three-axis CNC according to claim 1 is characterized in that: A first bearing (12) and a second bearing (13) are respectively mounted on the first support plate (2) and the second support plate (3); the first rotating shaft (5) is fixedly connected to the inner ring of the first bearing (12); and the second rotating shaft (6) is fixedly connected to the inner ring of the second bearing (13).

5. The five-axis device based on three-axis CNC according to claim 1 is characterized in that: The driving mechanism comprises a cylinder (14) and a push plate (15) installed at the output end of the cylinder (14); the connecting shaft (8) is a cylindrical structure; and the push plate (15) is provided with a long groove (16) which is slidably matched with the connecting shaft (8).

6. The five-axis device based on three-axis CNC according to claim 1, characterized in that: The workbench of the three-axis CNC machine is installed with a linear motor (17), and the base (1) is installed on the mover of the linear motor (17).

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