C shaft direct drive mechanism for machining center

Abstract

The utility model discloses a C axle direct drive mechanism for machining center relates to carbon fiber filament winding machine technical field, including the direct drive mechanism for driving the rotation of filament winding head body, its characterized in that still includes: connecting seat, it is fixedly installed on the filament winding head body, the direct drive mechanism includes base, locating disc, pad, inner mounting seat and drive motor, the base and locating disc are installed in the upper portion of base, the shell is fixedly installed on pad, the inner mounting seat is fixedly installed on the upper portion of pad, wherein, the external fixed mounting of connecting seat has the bearing, and the bearing is embedded in the base, and drive motor is fixed on the inner mounting seat, and the output shaft of drive motor is connected on connecting seat. The utility model has reduced the intermediate transmission link in traditional transmission structure, has reduced the position misalignment problem caused by transmission gap, component wear etc, has improved the positioning accuracy of filament winding head body rotation significantly, has guaranteed the movement consistency in layer processing process.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber layup machine technology, specifically a C-axis direct drive mechanism for machining centers. Background Technology

[0002] In modern industry, carbon fiber composites are widely used in key fields such as aerospace, automobile manufacturing, and wind turbine blades due to their significant advantages, including light weight, high strength, good corrosion resistance, and excellent high-temperature resistance. As these fields increasingly demand complex curved integral composite material components, higher requirements are being placed on their processing and manufacturing technologies.

[0003] Currently, the industry mostly uses automated fiber placement head equipment for the layering and manufacturing of complex curved integral composite material components. Such equipment typically includes rotating axes such as the A-axis body rotation axis, the C-axis body rotation axis, and the fiber placement head body rotation axis C1. These rotating axes need to move in coordination with the three linear axes (X, Y, and Z axes) of the machine tool under the control of the CNC system to complete the layering and manufacturing of the components.

[0004] In existing technologies, automated fiber placement equipment commonly suffers from problems such as position inaccuracy, speed inconsistency, and tension instability during operation. These issues directly affect the processing accuracy and quality stability of composite material components, making it difficult to meet the demands of high-precision manufacturing and hindering the further promotion and application of carbon fiber composite materials in high-end fields. Therefore, it is urgent to improve the relevant structures of automated fiber placement equipment to solve the aforementioned technical challenges. Utility Model Content

[0005] The purpose of this invention is to provide a C-axis direct drive mechanism for machining centers to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a C-axis direct drive mechanism for a machining center, comprising a direct drive mechanism for driving the rotation of the filament placement head body, characterized in that it further comprises:

[0007] The connecting seat is fixedly installed on the wire laying head body;

[0008] The direct drive mechanism includes a base, a positioning plate, a pad, an inner mounting base, and a drive motor. The pad and the positioning plate are stacked on the upper part of the base, and the inner mounting base is fixedly installed on the upper part of the pad.

[0009] The connecting seat has a bearing fixedly installed on its exterior, which is embedded in the base. The drive motor is fixed on the inner mounting seat, and the output shaft of the drive motor is connected to the connecting seat. A rotating disk is fixedly installed on the upper part of the connecting seat. The connecting seat and the drive motor are connected by a coupling.

[0010] Preferably, it also includes a recessed hole, which is formed on the upper part of the wire laying head body, and the connecting seat is embedded in the recessed hole.

[0011] Preferably, the base, positioning plate, and pad are installed concentrically, and the inner diameters of the positioning plate and pad are the same.

[0012] Preferably, the rotating disk and the positioning disk are rotatably connected, and a planar bearing is provided between the lower part of the rotating disk and the bearing.

[0013] Preferably, the upper part of the pad is provided with a groove that matches the inner mounting seat, and the lower part of the inner mounting seat is embedded in the groove.

[0014] Preferably, it includes a housing that is fixedly mounted on the upper part of the pad, the housing being used to connect to the CNC machine tool.

[0015] Preferably, a heat dissipation gap is provided between the outer surface of the drive motor and the inner wall of the housing.

[0016] In the above technical solution, the present invention provides a C-axis direct drive mechanism for machining centers, which directly connects the drive motor to the connecting seat via a coupling, reducing the intermediate transmission links in the traditional transmission structure, reducing the positional inaccuracy caused by transmission gaps, component wear, etc., and significantly improving the positioning accuracy of the filament placement head body rotation; at the same time, the direct drive method shortens the power transmission path, making the speed adjustment of the filament placement head body more rapid, effectively improving the speed inconsistency phenomenon, and ensuring the consistency of motion during the layer laying process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of a C-axis direct drive mechanism for a machining center according to the present invention;

[0019] Figure 2 This is a schematic diagram of a C-axis direct drive mechanism for a machining center according to the present invention;

[0020] Figure 3 This is a schematic diagram of a C-axis direct drive mechanism for a machining center according to the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Wire laying head body; 2. Direct drive mechanism; 21. Base; 22. Positioning plate; 23. Pad; 24. Inner mounting base; 25. Outer shell; 26. Drive motor; 27. Coupling; 28. Bearing; 29. ​​Rotary disk; 101. Countersunk hole; 102. Connecting seat. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Please see Figure 1-3 The present invention provides a C-axis direct drive mechanism for a machining center, comprising a direct drive mechanism 2 for driving the filament placement head body 1 to rotate, characterized in that it further comprises:

[0024] The connecting seat 102 is fixedly installed on the filament laying head body 1;

[0025] The direct drive mechanism includes a base 21, a positioning plate 22, a pad 23, an inner mounting base 24, and a drive motor 26. The pad 23 and the positioning plate 22 are stacked on the upper part of the base 21, and the inner mounting base 24 is fixedly installed on the upper part of the pad 23.

[0026] The connecting seat 102 has a bearing 28 fixedly mounted externally, which is embedded in the base 21. The drive motor 26 is fixed on the inner mounting seat 24, and the output shaft of the drive motor 26 is connected to the connecting seat 102. A rotating disk 29 is fixedly mounted on the upper part of the connecting seat 102. The connecting seat 102 and the drive motor 26 are connected by a coupling 27. The bearing 28 is installed with an interference fit on the outside of the connecting seat 102, and the outer ring of the bearing 28 is embedded in the groove on the inner wall of the base 21 to achieve rotational support between the connecting seat 102 and the base 21. The output shaft of the drive motor 26 is connected to the connecting seat 102 by the coupling 27, which can compensate for installation errors and ensure the stability of power transmission. The rotating disk 29 is fixedly mounted on the upper part of the connecting seat 102, so that the rotating disk 29 and the positioning disk 22 form a rotational connection. A flat bearing is added between the lower part of the rotating disk 29 and the bearing 28 to enhance the axial load-bearing capacity and reduce rotational friction.

[0027] In this embodiment, when the drive motor 26 starts, its output shaft directly drives the connecting seat 102 to rotate via the coupling 27, thereby driving the filament-laying head body 1 to rotate synchronously. Because a direct drive transmission method is adopted, intermediate transmission components such as gears and belts are eliminated, effectively eliminating transmission backlash. At the same time, the concentric design of the base 21, positioning plate 22, and pad 23, along with the supporting function of the bearing 28, ensures the stability of the rotation process.

[0028] It also includes a countersunk hole 101, which is formed on the upper part of the filament placement head body 1, and the connecting seat 102 is embedded in the countersunk hole 101. The countersunk hole 101 is formed on the upper part of the filament placement head body 1, and the connecting seat 102 is embedded in the countersunk hole 101 and fixed with bolts, so that the connecting seat 102 and the filament placement head body 1 form a stable connection. This embedded design can reduce the axial space occupied by the overall structure and improve the connection strength.

[0029] The base 21, positioning disk 22, and pad 23 are concentrically installed, with the inner diameters of the positioning disk 22 and pad 23 being identical. The base 21 and positioning disk 22 are stacked sequentially and fixed to the upper part of the base 21, ensuring a tight fit. Then, the pad 23 is installed on top of the positioning disk 22, and the base 21, positioning disk 22, and pad 23 must be strictly concentric, with the inner diameters of the positioning disk 22 and pad 23 being identical. This ensures the coaxiality of the subsequent rotating components and reduces eccentricity errors.

[0030] The rotating disk 29 and the positioning disk 22 are rotatably connected, and a planar bearing is provided between the lower part of the rotating disk 29 and the bearing 28.

[0031] The upper part of the pad 23 is provided with a groove that matches the inner mounting seat 24, and the lower part of the inner mounting seat 24 is embedded in the groove. The inner mounting seat is fixed to the drive motor: a groove matching the inner mounting seat 24 is machined on the upper part of the pad 23; the lower part of the inner mounting seat 24 is embedded in the groove and tightened, ensuring precise positioning of the inner mounting seat 24; the drive motor 26 is fixed to the inner mounting seat 24 with bolts, ensuring that the axis of the motor output shaft coincides with the overall rotation center.

[0032] It includes a housing 25, which is fixedly mounted on the upper part of the pad 23, and the housing 25 is used to connect to the CNC machine tool.

[0033] A heat dissipation gap is provided between the outside of the drive motor 26 and the inner wall of the housing 25.

[0034] The outer casing 25 is fixedly installed on the upper part of the pad 23. The outer side of the outer casing 25 is reserved with a connection interface for CNC machine tools, which facilitates the integration of the overall mechanism with the machine tool. A heat dissipation gap of 5-8mm is reserved between the outer side of the drive motor 26 and the inner wall of the outer casing 25. This gap can form a natural air convection channel to accelerate the heat dissipation of the drive motor 26 during operation and avoid overheating of the motor.

[0035] A cooling channel is provided at the outer casing 25, which is connected to an external coolant circulation device to reduce the temperature by cooling water, thereby achieving the purpose of cooling the drive motor 26.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A C-axis direct drive mechanism for a machining center, comprising a direct drive mechanism (2) for driving the rotation of the filament placement head body (1), characterized in that, Also includes: Connector (102), which is fixedly installed on the yarn laying head body (1); The direct drive mechanism includes a base (21), a positioning plate (22), a pad (23), an inner mounting seat (24), and a drive motor (26). The pad (23) and the positioning plate (22) are stacked on the upper part of the base (21), and the inner mounting seat (24) is fixedly installed on the upper part of the pad (23). Among them, the connecting seat (102) is fixedly mounted with a bearing (28), the bearing (28) is embedded in the base (21), the drive motor (26) is fixed on the inner mounting seat (24), the output shaft of the drive motor (26) is connected to the connecting seat (102), the upper part of the connecting seat (102) is fixedly mounted with a rotating disk (29), and the connecting seat (102) and the drive motor (26) are connected by a coupling (27).

2. The C-axis direct drive mechanism for a machining center according to claim 1, characterized in that, It also includes a recessed hole (101), which is opened on the upper part of the wire laying head body (1), and the connecting seat (102) is embedded in the recessed hole (101).

3. The C-axis direct drive mechanism for a machining center according to claim 1, characterized in that, The base (21), positioning plate (22), and pad (23) are installed concentrically, and the inner diameters of the positioning plate (22) and pad (23) are the same.

4. The C-axis direct drive mechanism for a machining center according to claim 1, characterized in that, The rotating disk (29) and the positioning disk (22) are rotatably connected, and a planar bearing is provided between the lower part of the rotating disk (29) and the bearing (28).

5. A C-axis direct drive mechanism for a machining center according to claim 1, characterized in that, The upper part of the pad (23) is provided with a groove that matches the inner mounting base (24), and the lower part of the inner mounting base (24) is embedded in the groove.

6. The C-axis direct drive mechanism for a machining center according to claim 1, characterized in that, Includes a housing (25) which is fixedly mounted on the upper part of the pad (23), the housing (25) being used to connect to the CNC machine tool.

7. A C-axis direct drive mechanism for a machining center according to claim 6, characterized in that, A heat dissipation gap is provided between the outside of the drive motor (26) and the inner wall of the housing (25).

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