Trimming actuator, trimming device and trimming method

Abstract

This invention belongs to the field of composite material processing technology and discloses a trimming actuator, a trimming processing device, and a trimming processing method. The trimming actuator includes a side U-shaped housing, a milling assembly, and a transmission assembly. The main body of the side U-shaped housing extends vertically, and both ends are bent and extended horizontally to form an upper extension and a lower extension, which together form a receiving cavity. In the milling assembly, a first connecting shaft passes through the upper extension and is rotatably connected to it, with its upper end connected to a power spindle and its lower end connected to a first milling cutter. The lower end of a second connecting shaft is rotatably connected to the lower extension, and its upper end is connected to a second milling cutter. The first and second connecting shafts are coaxially arranged, and the first milling cutter is located above the second milling cutter, with their axes collinear. The rotation of the power spindle drives the first connecting shaft and the first milling cutter to rotate synchronously. The transmission assembly transmits the power of the first connecting shaft to the second connecting shaft, realizing the synchronous rotation of the first and second milling cutters and suppressing delamination and burr defects on the trimmed edges of the composite material.

Description

Technical Field

[0001] This invention relates to the field of composite material processing technology, and in particular to a trimming actuator, trimming device, and trimming method. Background Technology

[0002] In recent years, composite materials such as carbon fiber, aramid fiber, and glass fiber have been increasingly widely used due to their lightweight, high specific strength, and corrosion resistance. However, composite materials are heterogeneous materials, and their inherent physical properties make them highly susceptible to defects such as burrs and delamination during edge milling. These defects not only severely affect the machining quality of the workpiece but also significantly weaken its structural mechanical properties, even leading to workpiece scrap and causing substantial economic losses.

[0003] Currently, the common machining method uses a single milling cutter for vertical cutting. The axial cutting force generated by this method creates vertical stress within the composite material. This stress, when transmitted to the interlayer interfaces, can cause the fiber layers to detach from the resin matrix and deform if it exceeds the interlayer bonding strength. While the fiber deformation can recover after the cutter is removed, it loses the adhesive support of the resin matrix, ultimately leading to permanent delamination. Furthermore, single-milling-cutting easily causes burrs on the workpiece edges, making it difficult to meet the precision edge-sealing requirements of high-end composite materials.

[0004] Therefore, there is an urgent need for edge-cutting actuators, edge-cutting processing devices, and edge-cutting processing methods to solve the above problems. Summary of the Invention

[0005] The first objective of this invention is to provide a cutting mechanism that avoids vertical stress between composite material layers, suppresses delamination and burr defects, ensures processing quality and structural mechanical properties, and meets the precision cutting requirements of high-end fields.

[0006] To achieve this objective, the present invention adopts the following technical solution: A trimming actuator, connected to the power spindle of a CNC machining mechanism, is used for trimming the edges of composite materials. The trimming actuator includes: The side U-shaped housing includes a main body, an upper extension and a lower extension. The main body extends in the vertical direction, and both ends of the main body are bent and extended in the horizontal direction to form the upper extension and the lower extension. The main body, the upper extension and the lower extension together form an accommodating cavity. A milling assembly includes a first connecting shaft, a second connecting shaft, a first milling cutter, and a second milling cutter. The first connecting shaft passes through the upper extension and is rotatably connected to the upper extension. The upper end of the first connecting shaft is drive-connected to the power spindle, and the lower end of the first connecting shaft is connected to the tool holder of the first milling cutter. The CNC machining mechanism drives the power spindle to rotate, which can drive the first connecting shaft and the first milling cutter to rotate synchronously. The lower end of the second connecting shaft is rotatably connected to the lower extension, and the upper end of the second connecting shaft is connected to the tool holder of the second milling cutter. The first milling cutter is located above the second milling cutter. The first connecting shaft and the second connecting shaft are coaxially arranged, and the axes of the first milling cutter and the second milling cutter are collinear. A transmission assembly, disposed within the accommodating cavity, is configured to transmit power from the first connecting shaft to the second connecting shaft, causing the first milling cutter and the second milling cutter to rotate synchronously.

[0007] As an alternative to the shearing actuator, the transmission assembly includes: The first gear is fixed to the first connecting shaft; The second gear is rotatably disposed within the main body and meshes with the first gear for transmission. The transmission shaft, the third gear, and the fourth gear are rotatably disposed within the main body, and the third gear and the fourth gear are respectively fixed at both ends of the transmission shaft. The third gear meshes with the second gear for transmission. The fifth gear is fixed to the second connecting shaft and meshes with the fourth gear for transmission.

[0008] As an alternative to the edge-cutting actuator, the milling assembly further includes a first bearing and a second bearing, the inner ring of the first bearing being connected to the first connecting shaft and the outer ring of the first bearing being connected to the upper extension; the inner ring of the second bearing being connected to the lower end of the second connecting shaft and the outer ring of the second bearing being connected to the lower extension.

[0009] As an alternative solution for the edge-cutting actuator, the side U-shaped housing includes a first housing and a second housing arranged symmetrically in a side U-shape. The first housing and the second housing are detachably fixedly connected and enclose the cavity.

[0010] As an alternative to the edge-cutting actuator, the first and second milling cutters have the same model and size.

[0011] The second objective of this invention is to provide an edge trimming device that, by employing the aforementioned edge trimming actuator, can suppress delamination and burr defects in composite materials, improve the quality and precision of edge trimming, and simultaneously achieve automated processing, thereby increasing the efficiency of composite material edge trimming operations.

[0012] To achieve this objective, the present invention adopts the following technical solution: The edge trimming device includes a CNC machining mechanism, a control mechanism, and the aforementioned edge trimming execution mechanism. The power spindle of the CNC machining mechanism is drively connected to the first connecting shaft of the edge trimming execution mechanism. The control mechanism is electrically connected to the CNC machining mechanism. The control mechanism is configured to control the CNC machining mechanism to drive the power spindle to rotate, thereby causing the first milling cutter and the second milling cutter to rotate synchronously, so as to perform bidirectional synchronous edge trimming on the composite material.

[0013] As an optional solution for the edge trimming device, the control mechanism is also configured to control the CNC machining mechanism to drive the power spindle to rotate around a horizontal axis other than the Z-axis direction, thereby driving the edge trimming actuator to rotate synchronously, so that the axes of the first milling cutter and the second milling cutter form a preset angle α with the Z-axis direction, and the lowest point A of the first milling cutter is lower than the highest point B of the second milling cutter, so that the cutting areas of the first milling cutter and the second milling cutter overlap in the Z-axis direction and cover the area to be processed.

[0014] As an optional solution for the edge trimming device, the edge trimming device further includes a processing platform on which the composite material can be placed; the control mechanism is also configured to control the CNC machining mechanism to drive the power spindle to move along the X-axis, Y-axis and Z-axis, thereby driving the edge trimming actuator to move synchronously, and driving the first milling cutter and the second milling cutter to move synchronously, so that the edge trimming width along the X-axis, the edge trimming length along the Y-axis and the edge trimming height along the Z-axis of the composite material can be adjusted.

[0015] As an alternative to the edge trimming device, the edge trimming device further includes a position detector electrically connected to the control mechanism. The position detector is configured to detect the spatial position coordinates of the composite material, the first milling cutter, and the second milling cutter, and is able to transmit the three spatial position coordinates to the control mechanism. The control mechanism is able to control the CNC machining mechanism to drive the power spindle to move along the X-axis, Y-axis, and Z-axis directions based on the three spatial position coordinates.

[0016] The third objective of this invention is to provide a trimming method that can be applied to the aforementioned trimming device to effectively disperse cutting forces, reduce delamination and burr defects in composite materials, improve trimming accuracy and quality, and simultaneously achieve automated processing, thereby significantly improving work efficiency.

[0017] To achieve this objective, the present invention adopts the following technical solution: An edge trimming method, applied to the aforementioned edge trimming apparatus, comprises the following steps: Step S100: Place the composite material to be processed on the processing platform and fix it in place; Step S200: The control mechanism controls the CNC machining mechanism to drive the power spindle to rotate around a horizontal axis other than the Z-axis direction, thereby driving the trimming execution mechanism to rotate synchronously, so that the axes of the first milling cutter and the second milling cutter form a preset angle with the Z-axis direction, and the lowest point A of the first milling cutter is lower than the highest point B of the second milling cutter; Step S300: The control mechanism controls the CNC machining mechanism to drive the power spindle to move along the X-axis, Y-axis and Z-axis, thereby driving the trimming execution mechanism to move synchronously, driving the first milling cutter and the second milling cutter to feed synchronously, adjusting the trimming width of the composite material along the X-axis, adjusting the trimming length of the composite material along the Y-axis, and adjusting the trimming height of the composite material along the Z-axis, and completing the trimming of the composite material according to the set parameters and route.

[0018] The beneficial effects of this invention are: This invention provides a trimming actuator connected to the power spindle of a CNC machining mechanism. The CNC machining mechanism drives the power spindle to rotate, which in turn drives a first connecting shaft to rotate synchronously. The first connecting shaft drives a first milling cutter to rotate and, through a transmission assembly, transmits power to a second connecting shaft, causing the second connecting shaft to drive a second milling cutter to rotate synchronously. Because the first and second connecting shafts are coaxial, and the axes of the first and second milling cutters are collinear, with the first milling cutter positioned above the second, the synchronous rotation of the first and second milling cutters allows for bidirectional synchronous milling of the composite material. Furthermore, the upper and lower extensions of the side U-shaped housing provide stable support for the first and second connecting shafts, respectively, and the accommodating cavity of the side U-shaped housing provides installation protection for the milling assembly and the transmission assembly. This edge-cutting actuator can counteract the axial cutting force generated by the vertical cutting of a single milling cutter, avoiding vertical stress between composite material layers. By controlling the rotation direction, feed direction, and rotation direction of the two milling cutters, it ensures that the cutting force F1 on the upper end and the cutting force F2 on the lower end of the composite material are both directed towards the interior of the composite material, effectively suppressing delamination and burr defects, ensuring processing quality and structural mechanical properties, and meeting the precision edge-cutting requirements of high-end fields.

[0019] This invention also provides a trimming processing device, which includes a CNC machining mechanism, a control mechanism, and the aforementioned trimming execution mechanism. The control mechanism issues commands to control the operation of the CNC machining mechanism, which drives the power spindle to rotate. The power spindle drives the first connecting shaft to rotate synchronously, which in turn drives the first and second milling cutters to rotate synchronously, achieving bidirectional synchronous milling and trimming of the composite material. Through the linkage control between the control mechanism and the CNC machining mechanism, the trimming processing device ensures the synchronicity and accuracy of the two milling cutters. The bidirectional milling ensures that the cutting force F1 on the upper end and the cutting force F2 on the lower end of the composite material are both directed towards the interior of the composite material, effectively suppressing delamination and burr defects, improving the quality and accuracy of trimming, and simultaneously achieving automated processing, thus improving the efficiency of composite material trimming operations.

[0020] This invention also provides a trimming method. The composite material is fixed to a processing platform. A control mechanism regulates the rotation of the power spindle around a horizontal axis other than the Z-axis, causing the axes of the first and second milling cutters to form a preset angle with the Z-axis, and the cutting areas of the first and second milling cutters to overlap. The power spindle is then driven to move along the X-axis, causing the first and second milling cutters to feed synchronously along the X-axis, adjusting the trimming width. The power spindle is then driven to move along the Y-axis and Z-axis, adjusting the trimming length and height as needed, and completing the processing according to set parameters and a predetermined path. This trimming method offers smooth operation and precise control. Overlapping cutting eliminates blind spots, and the three-directional movement adapts to various size processing requirements. It effectively disperses cutting forces, reduces composite material delamination and burr defects, improves trimming accuracy and quality, and simultaneously achieves automated processing, significantly increasing work efficiency. Attached Figure Description

[0021] Figure 1 This is a first schematic diagram of the edge-cutting actuator described in an embodiment of the present invention; Figure 2 This is a second schematic diagram of the edge-cutting actuator described in an embodiment of the present invention; Figure 3 This is a third schematic diagram of the edge-cutting actuator described in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the cutting mechanism described in an embodiment of the present invention; Figure 5 This is a schematic diagram showing that the axes of the first and second milling cutters described in the embodiments of the present invention form a preset angle α with the Z-axis direction.

[0022] In the picture: 100. Power spindle; 200. Composite materials; 1. Side U-shaped housing; 10. Receiving cavity; 11. First housing; 12. Second housing; 2. Milling assembly; 21. First connecting shaft; 22. Second connecting shaft; 23. First milling cutter; 24. Second milling cutter; 25. First bearing; 26. Second bearing; 3. Transmission assembly; 31. First gear; 32. Second gear; 33. Drive shaft; 34. Third gear; 35. Fourth gear; 36. Fifth gear; 37. Third bearing. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-5As shown, this embodiment provides a trimming actuator, a trimming processing device, and a trimming processing method. The trimming actuator is connected to the power spindle 100 of a CNC machining mechanism and is used to trim the edges of the composite material 200. The trimming actuator includes a side U-shaped housing 1, a milling assembly 2, and a transmission assembly 3. The side U-shaped housing 1 includes a main body, an upper extension, and a lower extension. The main body extends vertically, and both ends are bent and extended horizontally to form the upper and lower extensions. The main body, the upper extension, and the lower extension enclose a receiving cavity 10. The milling assembly 2 includes a first connecting shaft 21, a second connecting shaft 22, a first milling cutter 23, and a second milling cutter 24. The first connecting shaft 21 passes through the upper extension and is rotatably connected to it. The upper end of the first connecting shaft 21 is connected to the power spindle 100, and the lower end of the first connecting shaft 21 is connected to the tool holder of the first milling cutter 23. The CNC machining mechanism drives the power spindle 100 to rotate, which can drive the first connecting shaft 21 and the first milling cutter 23 to rotate synchronously. The lower end of the second connecting shaft 22 is rotatably connected to the lower extension, and the upper end of the second connecting shaft 22 is connected to the tool holder of the second milling cutter 24. The first milling cutter 23 is located above the second milling cutter 24. The first connecting shaft 21 and the second connecting shaft 22 are coaxially arranged, and the axes of the first milling cutter 23 and the second milling cutter 24 are collinear. The transmission assembly 3 is disposed in the accommodating cavity 10 and is used to transmit the power of the first connecting shaft 21 to the second connecting shaft 22, so that the first milling cutter 23 and the second milling cutter 24 rotate synchronously.

[0028] Specifically, the trimming actuator is connected to the power spindle 100 of the CNC machining mechanism. The CNC machining mechanism drives the power spindle 100 to rotate, which in turn drives the first connecting shaft 21 to rotate synchronously. The first connecting shaft 21 drives the first milling cutter 23 to rotate on one hand, and transmits power to the second connecting shaft 22 through the transmission assembly 3 on the other hand, causing the second connecting shaft 22 to drive the second milling cutter 24 to rotate synchronously. Since the first connecting shaft 21 and the second connecting shaft 22 are coaxial, and the axes of the first milling cutter 23 and the second milling cutter 24 are collinear, and the first milling cutter 23 is located above the second milling cutter 24, the composite material 200 can be milled synchronously in both directions when the first milling cutter 23 and the second milling cutter 24 rotate synchronously. In addition, the upper extension and the lower extension of the side U-shaped housing 1 provide stable support for the first connecting shaft 21 and the second connecting shaft 22, respectively. The accommodating cavity 10 of the side U-shaped housing 1 provides installation protection for the milling assembly 2 and the transmission assembly 3. This edge-cutting actuator can counteract the axial cutting force generated by the vertical cutting of a single milling cutter, avoiding vertical stress between the layers of the composite material 200. By controlling the rotation direction, feed direction, and rotation direction of the two milling cutters, it ensures that the cutting force F1 at the upper end and the cutting force F2 at the lower end of the composite material 200 are both directed towards the interior of the composite material 200, effectively suppressing delamination and burr defects, ensuring processing quality and structural mechanical properties, and meeting the precision edge-cutting requirements of high-end fields.

[0029] like Figures 2-4 As shown, the transmission assembly 3 includes a first gear 31, a second gear 32, a transmission shaft 33, a third gear 34, a fourth gear 35, and a fifth gear 36. The first gear 31 is fixed to the first connecting shaft 21. The second gear 32 is rotatably disposed within the main body and meshes with the first gear 31 for transmission. The transmission shaft 33 is rotatably disposed within the main body, and the third gear 34 and the fourth gear 35 are fixed at both ends of the transmission shaft 33, respectively. The third gear 34 meshes with the second gear 32 for transmission. The fifth gear 36 is fixed to the second connecting shaft 22 and meshes with the fourth gear 35 for transmission. The transmission assembly 3, through the meshing of the first gear 31, the second gear 32, the third gear 34, the fourth gear 35, and the fifth gear 36, and the cooperation of the transmission shaft 33, stably transmits the power of the first connecting shaft 21 to the second connecting shaft 22, ensuring that the first milling cutter 23 and the second milling cutter 24 rotate synchronously and are adapted to each other, resulting in smooth transmission and low power loss. At the same time, the compact structure adapts to the accommodating cavity 10 of the side U-shaped housing 1, ensuring the stability of bidirectional milling and helping to suppress machining defects of the composite material 200.

[0030] It is worth noting that the first gear 31 and the second gear 32 meshing with it rotate in opposite directions, the second gear 32 and the third gear 34 meshing with it rotate in opposite directions, the fourth gear 35 and the third gear 34 are both connected to the transmission shaft 33 and rotate in the same direction, and the fifth gear 36 and the fourth gear 35 meshing with it rotate in opposite directions. Due to the characteristics of gear transmission, the first gear 31 and the fifth gear 36 rotate in opposite directions, that is, the first milling cutter 23 and the second milling cutter 24 rotate in opposite directions. Therefore, in the edge cutting actuator of this embodiment, the first milling cutter 23 and the second milling cutter 24 can use ordinary milling cutters of the same type to make the upper cutting force F1 and the lower cutting force F2 both face the interior of the composite material 200 to be processed, thus avoiding delamination defects.

[0031] like Figure 4 As shown, the milling assembly 2 also includes a first bearing 25 and a second bearing 26. The inner ring of the first bearing 25 is connected to the first connecting shaft 21, and the outer ring of the first bearing 25 is connected to the upper extension. The inner ring of the second bearing 26 is connected to the lower end of the second connecting shaft 22, and the outer ring of the second bearing 26 is connected to the lower extension. The first bearing 25, in conjunction with the upper extension, provides radial support to the first connecting shaft 21, and the second bearing 26, in conjunction with the lower extension, provides radial support to the second connecting shaft 22. The two bearings precisely limit the movement of the two connecting shafts, preventing radial movement and friction during rotation, ensuring smooth rotation of the first connecting shaft 21 and the second connecting shaft 22, ensuring the synchronous operation accuracy of the first milling cutter 23 and the second milling cutter 24, and improving the stability and processing quality of the composite material 200 edge trimming.

[0032] like Figure 4As shown, the transmission assembly 3 also includes two third bearings 37. The outer rings of the two third bearings 37 are connected to the main body, and the inner rings of the two third bearings 37 are connected to both ends of the transmission shaft 33. The two third bearings 37, together with the main body, provide radial support to both ends of the transmission shaft 33, achieving stable assembly and precise positioning of the transmission shaft 33. This effectively reduces the frictional resistance and radial movement of the transmission shaft 33 during rotation, ensuring the smooth transmission of the transmission shaft 33, ensuring efficient power transmission between gears, maintaining the synchronous operation accuracy of the first milling cutter 23 and the second milling cutter 24, and improving the stability of the edge cutting of the composite material 200.

[0033] like Figure 1 As shown, the side-U-shaped housing 1 includes a first housing 11 and a second housing 12 that are side-U shaped and symmetrically arranged. The first housing 11 and the second housing 12 are detachably and fixedly connected, and enclose a cavity 10. Both the first housing 11 and the second housing 12 are side-U shaped and symmetrically arranged, and they are detachably and fixedly connected. The cavity 10 formed by them can stably accommodate the milling assembly 2 and the transmission assembly 3. The detachable design facilitates the installation, debugging and subsequent maintenance of the internal components, while the symmetrical structure enhances the overall structural strength of the side-U-shaped housing 1.

[0034] In this embodiment, the first housing 11 is provided with a slot, and the second housing 12 is provided with a pin; or, the second housing 12 is provided with a slot, and the first housing 11 is provided with a pin. The first housing 11 and the second housing 12 are detachably and fixedly connected through the insertion and engagement of the slot and the pin. The insertion and engagement of the slot and the pin provides precise positioning guidance for the first housing 11 and the second housing 12, ensuring a good fit between them and improving the assembly accuracy and stability of the overall structure. At the same time, the plug-in detachable connection method is simple to operate, requires no complex tools, greatly simplifies the disassembly and assembly process of the side U-shaped housing 1, and facilitates the installation, debugging, and subsequent maintenance of internal components.

[0035] In this embodiment, the first milling cutter 23 and the second milling cutter 24 are identical in model and size. The cutting parameters for bidirectional milling are kept consistent. The cutting force F1 at the upper end and the cutting force F2 at the lower end are both directed towards the interior of the composite material 200, which significantly reduces the axial stress during the machining of the composite material 200, effectively avoids interlayer delamination and edge burr defects, ensures the consistency and accuracy of edge cutting, and is suitable for the precision edge cutting requirements of high-end fields for composite materials 200.

[0036] In this embodiment, the edge trimming device includes a CNC machining mechanism, a control mechanism, and an edge trimming execution mechanism. The power spindle 100 of the CNC machining mechanism is connected to the first connecting shaft 21 of the edge trimming execution mechanism. The control mechanism is electrically connected to the CNC machining mechanism. The control mechanism is used to control the CNC machining mechanism to drive the power spindle 100 to rotate, thereby driving the first milling cutter 23 and the second milling cutter 24 to rotate synchronously, so as to trim the composite material 200 in both directions synchronously.

[0037] The control mechanism issues commands to control the operation of the CNC machining mechanism, which drives the power spindle 100 to rotate. The power spindle 100 drives the first connecting shaft 21 to rotate synchronously, which in turn drives the first milling cutter 23 and the second milling cutter 24 to rotate synchronously, realizing bidirectional synchronous milling and trimming of the composite material 200. The trimming device ensures the synchronicity and accuracy of the two milling cutters through the linkage control between the control mechanism and the CNC machining mechanism. The bidirectional milling ensures that the cutting force F1 on the upper end and the cutting force F2 on the lower end of the composite material 200 are both directed towards the interior of the composite material 200, effectively suppressing delamination and burr defects, improving the quality and accuracy of trimming, and realizing automated processing, thereby improving the efficiency of trimming operations on the composite material 200.

[0038] In this embodiment, the composite material 200 to be processed is a cuboid. The extension direction of the height of the composite material 200 is defined as the Z-axis direction, the extension direction of the width of the composite material 200 is defined as the X-axis direction, the extension direction of the length of the composite material 200 is defined as the Y-axis direction, and the feed direction of the first milling cutter 23 and the second milling cutter 24 is the X-axis direction.

[0039] It is worth noting that if the axes of the first milling cutter 23 and the second milling cutter 24 are set parallel to the Z-axis direction, the gap between the first milling cutter 23 and the second milling cutter 24 will cause some of the composite material 200 to be unable to be completely cut and machined, requiring subsequent secondary processing.

[0040] like Figure 5As shown, the control mechanism is also used to control the CNC machining mechanism to drive the power spindle 100 to rotate around a horizontal axis other than the Z-axis, thereby driving the cutting execution mechanism to rotate synchronously, so that the axes of the first milling cutter 23 and the second milling cutter 24 form a preset angle α with the Z-axis direction, and the lowest point A of the first milling cutter 23 is lower than the highest point B of the second milling cutter 24, so that the cutting areas of the first milling cutter 23 and the second milling cutter 24 overlap in the Z-axis direction and cover the area to be processed. The axes of the first milling cutter 23 and the second milling cutter 24 are made at a preset angle α with the Z-axis, and the lowest point A of the first milling cutter 23 is lower than the highest point B of the second milling cutter 24. This allows the cutting areas of the first milling cutter 23 and the second milling cutter 24 to overlap in the Z-axis direction and fully cover the area to be processed, eliminating blind spots in the machining process and achieving continuous oblique milling. This enables the trimming of the composite material 200 to be completed in one feed, without the need for secondary processing, thus improving machining efficiency and ensuring the stability of the trimming quality. Furthermore, it disperses the axial cutting force, alleviates interlayer stress concentration, and enhances the suppression effect of delamination and burr defects. At the same time, it adapts to the trimming requirements of different angles, improving the machining adaptability and trimming accuracy of the trimming device.

[0041] In this embodiment, the control mechanism stores the model and size information of the first milling cutter 23 and the second milling cutter 24. The built-in algorithm can calculate the rotation angle of the power spindle 100 and control the CNC machining mechanism to drive the power spindle 100 to rotate around the horizontal axis in the non-Z-axis direction by that angle. This causes the edge-cutting execution mechanism to rotate synchronously by that angle. Subsequent operations can complete the edge-cutting of the composite material 200 with only one feed, without the need for secondary processing, thus improving processing efficiency and ensuring the stability of the edge-cutting quality.

[0042] In this embodiment, the trimming device also includes a processing platform on which the composite material 200 can be placed. The control mechanism further controls the CNC machining mechanism to drive the power spindle 100 to move along the X-axis, Y-axis, and Z-axis, causing the trimming execution mechanism to move synchronously, and also causing the first milling cutter 23 and the second milling cutter 24 to move synchronously. This allows the trimming width along the X-axis, the trimming length along the Y-axis, and the trimming height along the Z-axis of the composite material 200 to be adjustable. The processing platform provides stable processing support for the composite material 200. The control mechanism can control the power spindle 100 to move along the X-axis, Y-axis, and Z-axis, causing the first milling cutter 23 and the second milling cutter 24 to move synchronously, achieving flexible adjustment of the trimming width, length, and height. This adapts to the trimming requirements of composite materials 200 of different specifications, significantly improving the processing adaptability and versatility of the trimming device. Multi-size processing can be completed without changing the milling cutters, improving trimming efficiency.

[0043] It is worth noting that the control mechanism also stores the processing program and parameter data of the composite material 200 to be processed. It can directly and automatically control the operation of the CNC machining mechanism according to the preset instructions without the need for real-time manual intervention, thereby realizing the automated processing of the cutting edge of the composite material 200 and greatly improving the work efficiency. At the same time, the accurate parameter data provides data support for the movement and angle adjustment of the first milling cutter 23 and the second milling cutter 24, ensuring the consistency and accuracy of the processing parameters, and further improving the cutting edge accuracy and processing quality stability.

[0044] In this embodiment, the edge trimming device further includes a positioning fixture, which is used to position and fix the composite material 200 on the processing platform. The positioning fixture can stably fix the composite material 200 on the processing platform, effectively limiting the displacement and shaking of the composite material 200 during processing, avoiding problems such as edge trimming dimension deviation and decreased processing accuracy caused by the offset of the composite material 200, ensuring the accuracy and consistency of the edge trimming position, further improving the edge trimming accuracy and surface quality, and reducing the processing defect rate.

[0045] In this embodiment, the edge trimming device further includes a position detector, which is electrically connected to the control mechanism. The position detector is used to detect the spatial position coordinates of the composite material 200, the first milling cutter 23, and the second milling cutter 24, and can transmit the three spatial position coordinates to the control mechanism. The control mechanism can control the displacement of the CNC machining mechanism driving the power spindle 100 along the X-axis, Y-axis, and Z-axis directions based on the three spatial position coordinates. The position detector can accurately detect and transmit the three spatial position coordinates to the control mechanism, enabling the control mechanism to accurately control the displacement of the power spindle 100 along the X-axis, Y-axis, and Z-axis directions, achieving precise alignment of the first milling cutter 23, the second milling cutter 24, and the composite material 200, avoiding machining deviations, significantly improving the positioning accuracy and dimensional accuracy of the edge trimming, and realizing precise and intelligent control of the machining process.

[0046] Optionally, the position detector can be a photoelectric sensor. The photoelectric sensor can quickly and accurately capture the spatial position coordinates of the composite material 200, the first milling cutter 23, and the second milling cutter 24. It has fast signal transmission response and strong anti-interference ability, and can provide real-time and accurate position data for the control mechanism.

[0047] In this embodiment, the edge trimming method is applied to the edge trimming device of this embodiment, and the edge trimming method includes the following steps: Step S100: Place the composite material 200 to be processed on the processing platform and fix it; Step S200: The control mechanism controls the CNC machining mechanism to drive the power spindle 100 to rotate around the horizontal axis in the non-Z-axis direction, which drives the cutting execution mechanism to rotate synchronously, so that the axes of the first milling cutter 23 and the second milling cutter 24 form a preset angle with the Z-axis direction, and the lowest point A of the first milling cutter 23 is lower than the highest point B of the second milling cutter 24. Step S300: The control mechanism controls the CNC machining mechanism to drive the power spindle 100 to move along the X-axis, Y-axis and Z-axis, which drives the trimming execution mechanism to move synchronously, and drives the first milling cutter 23 and the second milling cutter 24 to feed synchronously. The trimming width of the composite material 200 is adjusted along the X-axis, the trimming length of the composite material 200 is adjusted along the Y-axis, and the trimming height of the composite material 200 is adjusted along the Z-axis. The trimming of the composite material 200 is completed according to the set parameters and route.

[0048] This edge trimming method first fixes the composite material 200 onto the processing platform. A control mechanism regulates the rotation of the power spindle 100 around a horizontal axis other than the Z-axis, causing the axes of the first and second milling cutters 23 and 24 to form a preset angle with the Z-axis, with their cutting areas overlapping. Then, the power spindle 100 is driven to move along the X-axis, allowing the first and second milling cutters 23 and 24 to feed synchronously along the X-axis, adjusting the edge width. The power spindle 100 is then driven to move along the Y-axis and Z-axis, adjusting the edge length and height as needed, and completing the machining according to the set parameters and path. This edge trimming method offers smooth operation and precise control. Overlapping cutting eliminates blind spots, and three-way movement adapts to various size processing requirements. It effectively disperses cutting forces, reduces delamination and burr defects in the composite material 200, improves edge trimming accuracy and quality, and achieves automated processing, significantly increasing work efficiency.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A trimming actuator, connected to the power spindle (100) of a CNC machining mechanism, for trimming the edges of a composite material (200), characterized in that, The cutting mechanism includes: The side U-shaped housing (1) includes a main body, an upper extension and a lower extension. The main body extends in the vertical direction, and both ends are bent and extended in the horizontal direction to form the upper extension and the lower extension. The main body, the upper extension and the lower extension together form an accommodating cavity (10). The milling assembly (2) includes a first connecting shaft (21), a second connecting shaft (22), a first milling cutter (23), and a second milling cutter (24). The first connecting shaft (21) passes through the upper extension and is rotatably connected to the upper extension. The upper end of the first connecting shaft (21) is connected to the power spindle (100) for transmission. The lower end of the first connecting shaft (21) is connected to the shank of the first milling cutter (23). The CNC machining mechanism drives the power spindle (100) to rotate, which can drive the first connecting shaft (21) and the first milling cutter (23) to rotate synchronously. The lower end of the second connecting shaft (22) is rotatably connected to the lower extension. The upper end of the second connecting shaft (22) is connected to the shank of the second milling cutter (24). The first milling cutter (23) is located above the second milling cutter (24). The first connecting shaft (21) and the second connecting shaft (22) are coaxially arranged. The axes of the first milling cutter (23) and the second milling cutter (24) are collinear. The transmission assembly (3), disposed within the accommodating cavity (10), is configured to transmit power from the first connecting shaft (21) to the second connecting shaft (22), thereby causing the first milling cutter (23) and the second milling cutter (24) to rotate synchronously.

2. The cutting actuator according to claim 1, characterized in that, The transmission assembly (3) includes: The first gear (31) is fixed to the first connecting shaft (21); The second gear (32) is rotatably disposed within the main body and meshes with the first gear (31) for transmission; The transmission shaft (33), the third gear (34), and the fourth gear (35) are rotatably disposed within the main body, and the third gear (34) and the fourth gear (35) are respectively fixed at both ends of the transmission shaft (33). The third gear (34) meshes with the second gear (32) for transmission. The fifth gear (36) is fixed to the second connecting shaft (22) and meshes with the fourth gear (35) for transmission.

3. The cutting actuator according to claim 1, characterized in that, The milling assembly (2) further includes a first bearing (25) and a second bearing (26). The inner ring of the first bearing (25) is connected to the first connecting shaft (21), and the outer ring of the first bearing (25) is connected to the upper extension. The inner ring of the second bearing (26) is connected to the lower end of the second connecting shaft (22), and the outer ring of the second bearing (26) is connected to the lower extension.

4. The cutting actuator according to claim 1, characterized in that, The side U-shaped housing (1) includes a first housing (11) and a second housing (12) arranged in a side U-shape and symmetrically. The first housing (11) and the second housing (12) are detachably fixedly connected and enclose the cavity (10).

5. The cutting mechanism according to claim 1, characterized in that, The first milling cutter (23) and the second milling cutter (24) are identical in model and size.

6. An edge trimming device, characterized in that, The invention includes a CNC machining mechanism, a control mechanism, and a trimming actuator as described in any one of claims 1-5. The power spindle (100) of the CNC machining mechanism is connected to the first connecting shaft (21) of the trimming actuator. The control mechanism is electrically connected to the CNC machining mechanism. The control mechanism is configured to control the CNC machining mechanism to drive the power spindle (100) to rotate, thereby driving the first milling cutter (23) and the second milling cutter (24) to rotate synchronously, so as to trim the composite material (200) synchronously in both directions.

7. The edge trimming device according to claim 6, characterized in that, The control mechanism is also configured to control the CNC machining mechanism to drive the power spindle (100) to rotate around a horizontal axis other than the Z-axis direction, thereby driving the cutting execution mechanism to rotate synchronously, so that the axes of the first milling cutter (23) and the second milling cutter (24) form a preset angle α with the Z-axis direction, and the lowest point A of the first milling cutter (23) is lower than the highest point B of the second milling cutter (24), so that the cutting areas of the first milling cutter (23) and the second milling cutter (24) overlap in the Z-axis direction and cover the area to be processed.

8. The edge trimming device according to claim 7, characterized in that, The trimming device further includes a processing platform on which the composite material (200) can be placed; the control mechanism is also configured to control the CNC machining mechanism to drive the power spindle (100) to move along the X-axis, Y-axis and Z-axis, thereby driving the trimming actuator to move synchronously, and driving the first milling cutter (23) and the second milling cutter (24) to move synchronously, so that the trimming width of the composite material (200) along the X-axis, the trimming length along the Y-axis and the trimming height along the Z-axis are all adjustable.

9. The edge trimming device according to claim 8, characterized in that, The edge trimming device further includes a position detector, which is electrically connected to the control mechanism. The position detector is configured to detect the spatial position coordinates of the composite material (200), the first milling cutter (23), and the second milling cutter (24), and can transmit the three spatial position coordinates to the control mechanism. The control mechanism can control the CNC machining mechanism to drive the power spindle (100) to move along the X-axis, Y-axis, and Z-axis directions according to the three spatial position coordinates.

10. A method for edge trimming, characterized in that, The edge-cutting apparatus according to claim 8 or 9, wherein the edge-cutting method comprises the following steps: Step S100: Place the composite material (200) to be processed on the processing platform and fix it; Step S200: The control mechanism controls the CNC machining mechanism to drive the power spindle (100) to rotate around a horizontal axis other than the Z-axis direction, thereby driving the edge cutting execution mechanism to rotate synchronously, so that the axes of the first milling cutter (23) and the second milling cutter (24) form a preset angle with the Z-axis direction, and the lowest point A of the first milling cutter (23) is lower than the highest point B of the second milling cutter (24); Step S300: The control mechanism controls the CNC machining mechanism to drive the power spindle (100) to move along the X-axis, Y-axis and Z-axis directions, thereby driving the edge cutting execution mechanism to move synchronously, driving the first milling cutter (23) and the second milling cutter (24) to feed synchronously, adjusting the edge width of the composite material (200) along the X-axis direction, adjusting the edge length of the composite material (200) along the Y-axis direction, and adjusting the edge height of the composite material (200) along the Z-axis direction, and completing the edge cutting of the composite material (200) according to the set parameters and route.

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