Direct drive type double-swing-head structure

Abstract

The utility model discloses a direct-drive type double-swing-head structure which comprises a three-shaft connection direct-drive swing head assembly, a three-shaft rotation C shaft, a C shaft fixing seat, a direct-drive motor fixedly connected with the C shaft fixing seat and a motor base fixedly connected with the direct-drive motor, and the three-shaft connection direct-drive swing head assembly comprises a three-shaft rotation C shaft and a C shaft fixing seat which are fixedly connected. The fork-shaped piece is fixed with the motor base through a screw; the motor-driven head swinging mechanism comprises an A-axis torque motor fixedly connected with the fork-shaped piece, a main shaft motor driving seat which is mounted in the fork-shaped piece and is connected with a driving shaft of the A-axis torque motor, and an electric main shaft fixedly connected with the main shaft motor driving seat; the reinforcing assembly comprises a connecting rotating shaft which penetrates through the fork-shaped piece and is fixedly connected with the spindle motor driving seat; through the designed three-axis connection direct-drive swing head assembly, the fork-shaped piece and the motor-driven swing head mechanism, under the synergistic effect of a direct-drive motor and an A-axis torque motor, swing of a tool in the a direction and the b direction is achieved, the double-swing effect is achieved, and machining of the complex curved surface of the surface of an impeller workpiece is facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of tool swing device, specifically relating to a direct-drive double swing head structure. Background Technology

[0002] When a machine tool processes a workpiece, the spindle is fixedly connected to the tool holder, and the tool is mounted on the tool holder. By driving the spindle, the tool holder and the tool are rotated to achieve the purpose of processing the workpiece. Traditional machine tools are three-axis, that is, the spindle of the machine tool can move along the X-axis, Y-axis and Z-axis to achieve the effect of processing three orthogonal surfaces of the workpiece.

[0003] However, when machining complex curved surfaces such as impellers, existing three-axis machine tools, although the spindle, tool holder, and tool can move in the X, Y, and Z axes, cannot adjust the tool's posture to be at the optimal cutting angle, thus preventing the tool from approaching the workpiece from any angle to complete the cutting process. Therefore, they cannot be used to machine complex curved surfaces such as impellers, which is a shortcoming.

[0004] When machining impeller workpieces with existing three-axis machine tools, there is a problem with the lack of a swivel head design that allows the tool angle to be adjusted and oscillated within a certain range. To address this issue, this application proposes a direct-drive double swivel head structure. Utility Model Content

[0005] The purpose of this invention is to provide a direct-drive double-swivel head structure to solve the problem mentioned in the background art of swivel head design that does not adjust the tool angle to allow it to swing within a certain range.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a direct-drive double-swivel head structure, comprising...

[0007] The three-axis direct-drive oscillating head assembly includes a fixedly connected three-axis rotary C-axis and a C-axis mounting base, a direct-drive motor fixedly connected to the C-axis mounting base, and a motor base fixedly connected to the direct-drive motor.

[0008] A fork-shaped component that is fixed to the motor base with screws;

[0009] The motor-driven oscillating head mechanism includes an A-axis torque motor fixedly connected to the fork-shaped component, a main spindle motor drive seat installed inside the fork-shaped component and connected to the drive shaft of the A-axis torque motor, and an electric main spindle fixedly connected to the main spindle motor drive seat.

[0010] The reinforcing assembly includes a connecting shaft that passes through the fork-shaped component and is fixedly connected to the main spindle motor drive seat, an outer rotating circular plate that is fixed to one end of the connecting shaft by screws, a connecting column that is perpendicular to the surface of the fork-shaped component, an inner fixing circular plate that is fixed to the connecting column by screws, and an electromagnet that is fixed to the inner fixing circular plate by screws.

[0011] Preferably, the centers of the three-axis rotary C-axis, the C-axis mounting base, and the direct drive motor are on the same axis. The drive shaft of the direct drive motor, which passes through the motor base, is fixed to the fork-shaped component by screws. The fork-shaped component rotates 360 degrees circumferentially along the axis of the drive shaft of the direct drive motor.

[0012] Preferably, the spindle motor drive seat and the fork-shaped component are rotatably connected by bearings, and the spindle motor drive seat rotates 180 degrees circumferentially along the axis of the A-axis torque motor drive shaft.

[0013] Preferably, the inner fixed circular plate has a circular hole at its center for the connecting shaft to pass through.

[0014] Preferably, the outer rotating circular plate and the inner fixed circular plate have the same diameter and thickness, and the outer rotating circular plate and the inner fixed circular plate are fitted together.

[0015] Preferably, the connecting column is a "T"-shaped column structure, the inner fixed circular plate and the electromagnet are flush on the same side, and the electromagnet and the outer rotating circular plate are connected by magnetic adsorption.

[0016] Preferably, the distance between the inner fixing circular plate and the side of the fork-shaped component is 1 cm, the electromagnets and connecting columns are circumferentially distributed on the inner fixing circular plate, and the electromagnets and connecting columns are alternately distributed.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, by designing a three-axis connection direct drive oscillating head assembly, a fork-shaped part, and a motor-driven oscillating head mechanism, the tool can swing along the a and b directions under the synergistic action of the direct drive motor and the A-axis torque motor, achieving a double oscillation effect, which facilitates the processing of complex curved surfaces on the impeller workpiece.

[0019] 2. In this utility model, through the designed reinforcing components, the electromagnet is magnetically attracted to the outer rotating circular plate, thereby achieving the effect of firmly securing the spindle motor drive seat and avoiding instability of the tool under reaction force when machining the workpiece. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the fork-shaped component of this utility model;

[0022] Figure 3 This is a side view of the internal fixing circular plate of this utility model.

[0023] In the diagram: 2. Fork-shaped component; 4. Outer rotating circular plate; 5. Inner fixed circular plate; 6. Connecting shaft; 7. Connecting column; 8. Electromagnet; 11. Three-axis rotating C-axis; 12. C-axis fixed seat; 13. Direct drive motor; 14. Motor base; 31. A-axis torque motor; 32. Spindle motor drive seat; 33. Electric spindle; 51. Circular hole. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 3 This utility model provides a technical solution: a direct-drive double-swivel head structure, including a three-axis connected direct-drive swivel head assembly, comprising a fixedly connected three-axis rotating C-axis 11 and C-axis fixed seat 12, a direct-drive motor 13 fixedly connected to the C-axis fixed seat 12, and a motor base 14 fixedly connected to the direct-drive motor 13. The three-axis rotating C-axis 11 is fixedly connected to the drive spindle of the machine tool. The drive spindle of the machine tool can move in the X-axis, Y-axis, and Z-axis spatial directions, thereby changing the position of the tool. The structure and principle of the three-axis machine tool are existing technologies, and this application will not elaborate further. The direct-drive motor 13 is a motor structure with a built-in torque motor. When the direct-drive motor 13 is working, it can control the fork-shaped part 2 to rotate within a 360-degree range, that is, along... Figure 1 The A-axis torque motor 31 and the spindle motor drive seat 32 rotate in the 'a' direction, thereby changing the position of the tool. The fork-shaped component 2, fixed to the motor base 14 by screws, supports and fixes the A-axis torque motor 31 and the spindle motor drive seat 32. The motor-driven tilting head mechanism includes the A-axis torque motor 31 fixedly connected to the fork-shaped component 2, the spindle motor drive seat 32 installed inside the fork-shaped component 2 and connected to the drive shaft of the A-axis torque motor 31, and the electric spindle 33 fixedly connected to the spindle motor drive seat 32. The spindle motor drive seat 32 houses the motor, and the tool is mounted on the electric spindle 33. When the spindle motor drive seat 32 is working, it can drive the electric spindle 33 and the tool to rotate, achieving the function of machining the workpiece. Figure 2In this designation, D represents the impeller workpiece. The tool on the electric spindle 33 processes the impeller workpiece D. When the A-axis torque motor 31 operates, it drives the spindle motor drive seat 32 to swing, thereby changing the position of the tool and facilitating the machining of the complex curved surface of the impeller workpiece D. Under the synergistic action of the direct drive motor 13 and the A-axis torque motor 31, the tool swings along the a and b directions, achieving a double-swing effect. Based on the three-axis movement of the machine tool (X, Y, and Z axes), this application adds rotational motion along the A and C axes, i.e., swinging along the a and b directions, forming a 5-axis linkage. This allows for the machining of the complex curved surface of the impeller workpiece D, while the workpiece is fixed to the worktable. The reinforcing assembly includes a through-fork 2 and... The spindle motor drive base 32 is fixedly connected to a connecting shaft 6, an outer rotating circular plate 4 fixed to one end of the connecting shaft 6 by screws, a connecting post 7 perpendicular to the surface of the fork-shaped part 2, an inner fixed circular plate 5 fixed to the connecting post 7 by screws, and an electromagnet 8 fixed to the inner fixed circular plate 5 by screws. When the spindle motor drive base 32 swings, the connecting shaft 6 and the outer rotating circular plate 4 rotate in the same direction. When the spindle motor drive base 32 is in a stationary state, the electromagnet 8 works, making the electromagnet 8 magnetically attracted to the outer rotating circular plate 4, thereby achieving the effect of firmly securing the spindle motor drive base 32 and avoiding instability of the spindle motor drive base 32 under the action of the reaction force generated by cutting the workpiece when the tool is processing the workpiece.

[0026] In this embodiment, the centers of the three-axis rotary C-axis 11, the C-axis mounting base 12, and the direct drive motor 13 are on the same axis. The drive shaft of the direct drive motor 13, which passes through the motor base 14, is fixed to the fork-shaped component 2 with screws. The fork-shaped component 2 rotates 360 degrees circumferentially along the axis of the drive shaft of the direct drive motor 13. When the direct drive motor 13 is working, it can control the fork-shaped component 2 to rotate within a 360-degree range, that is, along... Figure 1 The tool rotates in the 'a' direction, thereby changing its position.

[0027] In this embodiment, the spindle motor drive seat 32 and the fork-shaped part 2 are rotatably connected by bearings. The spindle motor drive seat 32 rotates 180 degrees circumferentially along the axis of the drive shaft of the A-axis torque motor 31. When the A-axis torque motor 31 is working, it drives the spindle motor drive seat 32 to swing, thereby changing the position of the tool and facilitating the machining of the complex curved surface of the impeller workpiece D.

[0028] In this embodiment, the inner fixing circular plate 5 has a circular hole 51 at its center for the connecting rotating shaft 6 to pass through. The connecting rotating shaft 6 is rotatably connected to the inner fixing circular plate 5, and the inner fixing circular plate 5 restricts the connecting rotating shaft 6 to prevent the connecting rotating shaft 6 from tilting.

[0029] In this embodiment, the outer rotating circular plate 4 and the inner fixed circular plate 5 have the same diameter and thickness. The outer rotating circular plate 4 and the inner fixed circular plate 5 are fitted together and their surfaces are in contact to prevent the outer rotating circular plate 4 from tilting.

[0030] In this embodiment, the connecting column 7 is a "T"-shaped column structure. The inner fixed circular plate 5 and the electromagnet 8 are flush on the same side. The electromagnet 8 and the outer rotating circular plate 4 are connected by magnetic adsorption. When the electromagnet 8 is working, the electromagnet 8 and the outer rotating circular plate 4 are magnetically attracted firmly, thereby achieving the effect of firmly securing the spindle motor drive seat 32. This avoids the spindle motor drive seat 32 from becoming unstable under the reaction force generated by cutting the workpiece when the tool is processing the workpiece.

[0031] In this embodiment, the distance between the inner fixed circular plate 5 and the side of the fork-shaped part 2 is 1 cm, which is conducive to the installation of the electromagnet 8. The electromagnet 8 and the connecting column 7 are circumferentially distributed on the inner fixed circular plate 5. The electromagnet 8 and the connecting column 7 are alternately distributed. There are two electromagnets 8 and they are symmetrically distributed, so that the magnetic attraction force on the outer rotating circular plate 4 is balanced.

[0032] Working principle and usage process of this utility model:

[0033] When machining the impeller workpiece D fixed on the worktable, the three-axis rotation C-axis 11 is fixedly connected to the machine tool's drive spindle. The machine tool's drive spindle can move in the X, Y, and Z axis directions, thereby changing the position of the tool.

[0034] When the direct drive motor 13 is working, it can control the fork-shaped part 2 to rotate within a 360-degree range, that is, along... Figure 1 Rotate in direction a to change the position of the tool;

[0035] When the A-axis torque motor 31 is working, it drives the spindle motor drive seat 32 to swing, thereby changing the position of the tool and making it easier to process the complex curved surface of the impeller workpiece D.

[0036] With the coordinated action of the direct drive motor 13 and the A-axis torque motor 31, the tool can swing along the a and b directions, achieving a double swing effect. Based on the three-axis movement of the machine tool's X, Y and Z axes, this application adds the rotational motion of the A and C axes, i.e. the swinging in the a and b directions, forming a 5-axis linkage, which can process the complex curved surface of the impeller workpiece D, while the workpiece is fixed on the worktable.

[0037] When the spindle motor drive seat 32 is in a stationary state, the electromagnet 8 starts to work, making the electromagnet 8 magnetically attracted to the outer rotating circular plate 4, thereby achieving the effect of firmly securing the spindle motor drive seat 32. This prevents the spindle motor drive seat 32 from becoming unstable under the reaction force generated by the cutting workpiece when the tool is machining the workpiece. When the spindle motor drive seat 32 is moving, the electromagnet 8 is in a de-energized state, which does not affect the swing of the spindle motor drive seat 32.

[0038] In summary, this application provides a swivel head design that can adjust the tool angle and make it swing within a certain range. The direct drive motor 13 controls the fork-shaped part 2 to rotate within a 360-degree range, and the A-axis torque motor 31 drives the spindle motor drive seat 32 to swing, thereby changing the position of the tool. Under the synergistic action of the direct drive motor 13 and the A-axis torque motor 31, the tool can swing along the a and b directions, achieving a double swing effect, which is convenient for machining the complex curved surface of the impeller workpiece D.

[0039] Although embodiments of the present invention have been shown and described (see the detailed description above), 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 direct-drive double-swivel head structure, characterized in that: include The three-axis direct drive oscillating head assembly includes a fixedly connected three-axis rotating C-axis (11) and C-axis mounting base (12), a direct drive motor (13) fixedly connected to the C-axis mounting base (12), and a motor base (14) fixedly connected to the direct drive motor (13). Fork-shaped piece (2) fixed to the motor base (14) by screws; The motor-driven oscillating head mechanism includes an A-axis torque motor (31) fixedly connected to the fork-shaped member (2), a spindle motor drive seat (32) installed inside the fork-shaped member (2) and connected to the drive shaft of the A-axis torque motor (31), and an electric spindle (33) fixedly connected to the spindle motor drive seat (32). The reinforcing assembly includes a connecting shaft (6) that passes through the fork-shaped part (2) and is fixedly connected to the spindle motor drive seat (32), an outer rotating circular plate (4) that is fixed to one end of the connecting shaft (6) by screws, a connecting post (7) that is perpendicular to the surface of the fork-shaped part (2), an inner fixing circular plate (5) that is fixed to the connecting post (7) by screws, and an electromagnet (8) that is fixed to the inner fixing circular plate (5) by screws.

2. The direct-drive double-swivel head structure according to claim 1, characterized in that: The centers of the three-axis rotating C-axis (11), C-axis fixing seat (12), and direct drive motor (13) are on the same axis. The drive shaft of the direct drive motor (13) passes through the motor base (14) and is fixed to the fork-shaped part (2) by screws. The fork-shaped part (2) rotates 360 degrees circumferentially along the axis of the drive shaft of the direct drive motor (13).

3. The direct-drive double-swivel head structure according to claim 1, characterized in that: The spindle motor drive seat (32) and the fork-shaped part (2) are rotatably connected by bearings. The spindle motor drive seat (32) rotates 180 degrees circumferentially along the axis of the drive shaft of the A-axis torque motor (31).

4. The direct-drive double-swivel head structure according to claim 1, characterized in that: The inner fixed circular plate (5) has a circular hole (51) at its center for the connecting shaft (6) to pass through.

5. The direct-drive double-swivel head structure according to claim 1, characterized in that: The outer rotating circular plate (4) and the inner fixed circular plate (5) have the same diameter and thickness, and the outer rotating circular plate (4) and the inner fixed circular plate (5) are fitted together.

6. The direct-drive double-swivel head structure according to claim 1, characterized in that: The connecting column (7) is a "T" shaped column structure. The inner fixed circular plate (5) and the electromagnet (8) are flush on the same side. The electromagnet (8) and the outer rotating circular plate (4) are connected by magnetic adsorption.

7. The direct-drive double-swivel head structure according to claim 1, characterized in that: The distance between the inner fixed circular plate (5) and the side of the fork-shaped piece (2) is 1 cm. The electromagnet (8) and the connecting column (7) are circumferentially distributed on the inner fixed circular plate (5). The electromagnet (8) and the connecting column (7) are alternately distributed.

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