Combined processing equipment and method for carbon fiber composite material

Abstract

The invention discloses combined machining equipment and method for a carbon fiber composite material, the combined machining equipment comprises a rack, a clamp, an abrasive water jet machining device and a machining device, the clamp, the abrasive water jet machining device and the machining device are arranged on the rack, and the clamp is used for fixing a carbon fiber composite material workpiece to be machined; the abrasive water jet machining device is used for conducting rough machining on a carbon fiber composite workpiece, materials are integrally removed in a grinding and impacting mode in the cutting process, lateral force on the materials is small, the quality of the sections of the cut materials is high, meanwhile, damage caused by heat accumulation is avoided, and the cutting speed is high. The machining device is used for conducting finish machining on the carbon fiber composite material workpiece subjected to rough machining through the water jet machining device. By means of the machining mode that machining and abrasive water jet machining are combined, on one hand, the machining cost can be reduced, and on the other hand, the machining precision and the machining quality can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber composite materials, and particularly relates to a combined processing device and method for carbon fiber composite materials. Background Art

[0002] Carbon fiber composite material is a material with carbon fiber as the reinforcement and epoxy resin as the matrix. It has a series of advantages such as high strength, low specific gravity, high temperature resistance, corrosion resistance, and fatigue resistance. Carbon fiber composite materials are widely used in the fields of aerospace, defense aircraft, etc. For example, carbon fiber composite materials are applied to structures such as aircraft skins to undertake functions such as support, connection, and assembly.

[0003] Carbon fiber composite materials are relatively difficult to process. Traditional mechanical processing is prone to processing damages such as delamination, tearing, and burrs. At the same time, due to the high strength and high hardness of the material itself, combined with factors such as the accumulation of cutting heat generated during the cutting process, it will exacerbate the tool wear, not only affecting the processing efficiency and quality, but also increasing the cost. Moreover, structures such as aircraft skins mostly have characteristics such as large size and complex shape. Coupled with the performance of carbon fiber composite materials themselves, traditional numerical control milling and cutting equipment are prone to defects such as cross-section delamination, plate deformation, and splitting of carbon fiber composite materials during the processing process, and a large amount of dust will be generated. A large number of repetitive contact processing will also exacerbate the tool wear and increase the cost.

[0004] Therefore, how to improve the processing quality of carbon fiber composite materials is a technical problem that those skilled in the art need to solve urgently. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined processing device and method for carbon fiber composite materials, which can effectively improve the processing quality of carbon fiber composite materials.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A combined processing device for carbon fiber composite materials includes: a frame and a fixture, an abrasive water jet processing device, and a mechanical processing device provided on the frame. The fixture is used to fix the carbon fiber composite material workpiece to be processed; the abrasive water jet processing device is used to rough-process the carbon fiber composite material workpiece; the mechanical processing device is used to finish-process the carbon fiber composite material workpiece that has been rough-processed by the water jet processing device.

[0008] In some embodiments, the combined processing device further includes a first moving device and a second moving device provided on the frame. The abrasive water jet processing device includes an abrasive water jet spindle. The first moving device is used to adjust the position of the abrasive water jet spindle; the machining device includes a machining spindle, and the second moving device is used to adjust the position of the machining spindle.

[0009] In some embodiments, the combined processing device further includes a controller. The controller is connected to the first moving device and the second moving device, and the controller is used to control the first moving device and the second moving device to move according to a preset processing trajectory.

[0010] In some embodiments, a water collecting tank is provided inside the frame. The water collecting tank is used to collect the waste generated when the abrasive water jet processing device processes the carbon fiber composite workpiece.

[0011] In some embodiments, the frame includes a support table. A plurality of support beams are provided on the support table at intervals. The fixture is installed on the support beam, and the water collecting tank is provided below the support table.

[0012] In some embodiments, a waterproof cover is further provided on the frame.

[0013] In some embodiments, the combined processing device further includes a dust removal device. The dust removal device is used to absorb the dust generated when the machining device processes the carbon fiber composite workpiece.

[0014] A combined processing method for carbon fiber composites, which applies the combined processing device described in any one of the above, the combined processing method includes the following steps:

[0015] Fix the carbon fiber composite workpiece to be processed on the fixture;

[0016] Start the abrasive water jet processing device to rough process the carbon fiber composite workpiece;

[0017] Start the machining device to finish process the carbon fiber composite workpiece that has been rough processed by the water jet processing device.

[0018] In some embodiments, the rough machining allowance is 4 mm, the water cutting pressure of the abrasive water jet processing device is any value within the range of 400 - 500 Mpa, the flow rate is 5.0 L / min, and the cutting speed is 1000 mm / min.

[0019] In some embodiments, the tool of the machining device is a multi-edge flat-bottom end mill with a diameter of 8.0 mm, the spindle speed of the machining device is 6000 r / min, and the cutting speed is 100 mm / min.

[0020] Compared with the prior art, the above technical solution has the following advantages:

[0021] A combined processing equipment and method for carbon fiber composite materials provided by the present invention, the combined processing equipment includes: a frame and a fixture, an abrasive water jet machining device and a machining device arranged on the frame, wherein the fixture is used to fix the carbon fiber composite material workpiece to be processed; the abrasive water jet machining device is used for rough machining of the carbon fiber composite material workpiece, and its cutting process integrally removes materials in the form of grinding and impact, with less lateral force on the materials, higher cross-section quality of the cut materials, and no heat accumulation causing damage, and the cutting speed is relatively fast; the machining device is used for finishing the carbon fiber composite material workpiece after rough machining by the water jet machining device. Among them, by combining the machining and abrasive water jet machining methods, on the one hand, the processing cost can be reduced, and on the other hand, the processing accuracy and processing quality can be improved. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0023] Figure 1 It is a schematic structural diagram of a combined processing equipment for carbon fiber composite materials provided by a specific embodiment of the present invention.

[0024] The reference numerals are as follows:

[0025] 1 - waterproof cover, 2 - machining spindle, 3 - carbon fiber composite material workpiece, 4 - controller, 5 - frame, 6 - dust removal device, 7 - water collecting tank, 8 - fixture, 9 - abrasive nozzle, 10 - abrasive water jet spindle. Specific Embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0027] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a combined processing device for carbon fiber composite materials provided by a specific embodiment of the present invention.

[0028] A combined processing device for carbon fiber composite materials provided by an embodiment of the present invention includes: a frame 5 and a fixture 8, an abrasive water jet processing device, and a machining device provided on the frame 5. The fixture 8 is used to fix the carbon fiber composite material workpiece 3 to be processed to ensure the stability of the carbon fiber composite material workpiece 3 during processing; the abrasive water jet processing device is used to perform rough machining on the carbon fiber composite material workpiece 3. Its cutting process removes materials integrally in the form of grinding and impact, with less lateral force on the material, higher cross-section quality of the cut material, no heat accumulation resulting in damage, and a relatively fast cutting speed; the machining device is used to perform finish machining on the carbon fiber composite material workpiece 3 that has been rough machined by the water jet processing device, for example, finish machining can be performed by milling. By combining the machining and abrasive water jet machining methods, on the one hand, the processing cost can be reduced, and on the other hand, the processing accuracy and quality can be improved, effectively meeting the requirements for large-size carbon fiber composite material workpieces 3.

[0029] In some embodiments, the combined processing device further includes a first moving device and a second moving device provided on the frame 5. The first moving device includes a first longitudinal driving unit, a first transverse driving unit, and a first lifting driving unit. The first transverse driving unit can control the first lifting driving unit to move transversely, and the first longitudinal driving unit can control the first transverse driving unit to move longitudinally; the second moving device includes a second longitudinal driving unit, a second transverse driving unit, and a second lifting driving unit. The second transverse driving unit can control the second lifting driving unit to move transversely, and the second longitudinal driving unit can control the second transverse driving unit to move longitudinally. A longitudinal slide rail can be provided on both sides of the frame 5, and the two ends of the first transverse driving unit and the second transverse driving unit are slidably connected to the longitudinal slide rail, and the first transverse driving unit and the second transverse driving unit are arranged in parallel. The abrasive water jet processing device includes an abrasive water jet spindle 10, and also includes a high-pressure water generating device and an abrasive supply device. The first moving device is used to adjust the position of the abrasive water jet spindle 10, and the abrasive water jet spindle 10 can be installed on the first lifting driving unit; the machining device includes a machining spindle 2, and the second moving device is used to adjust the position of the machining spindle 2, and the machining spindle 2 can be installed on the second lifting driving unit. By the first moving device, the position of the abrasive water jet spindle 10 in three-dimensional space can be adjusted, and by the second moving device, the position of the machining spindle 2 in three-dimensional space can be adjusted, which can adapt to the processing of carbon fiber composite material workpieces 3 of different sizes.

[0030] In some embodiments, the combined processing device further includes a controller 4, which can be arranged on one side of the frame 5. The controller 4 includes an operation display panel for the convenience of user operation. The controller 4 is connected to the first moving device and the second moving device, and can control the movement of the first moving device and the second moving device according to a preset processing trajectory, thereby improving the level of automated processing. For example, the length, width and height dimensions of the carbon fiber composite workpiece 3 to be processed are 1000mm×1000mm×8mm. When processing, first fix the carbon fiber composite workpiece 3 on the fixture 8, then start the controller 4, first adjust the abrasive water jet spindle 10 to align the abrasive nozzle 9 connected to the abrasive water jet spindle 10 with the processing starting position, then call the processing code according to the geometric characteristics of the composite material workpiece. The processing code is preset in the controller 4. Subsequently, set the working route and feed speed of the abrasive water jet spindle 10, and set the working route and processing process parameters of the mechanical processing spindle 2 according to the rough machining allowance. Then start the high-pressure water generating device and the abrasive supply device, start the abrasive water jet processing program, and complete the rough machining of the carbon fiber composite workpiece 3 at one time according to the preset processing trajectory. After the rough machining is completed, start the mechanical finishing program to remove the rough machining allowance and damaged areas of the abrasive water jet by the mechanical processing device once or multiple times to complete the processing of the required geometric features.

[0031] In some embodiments, a water collecting tank 7 is provided in the frame 5. The water collecting tank 7 is located below the fixture 8. The waste generated when the abrasive water jet processing device processes the carbon fiber composite workpiece 3 can flow into the water collecting tank 7 for collection. Further, in order to improve the utilization rate of the waste water, a filter can be provided at the water outlet of the water collecting tank 7, and the filtered water can also be used by the abrasive water jet processing device.

[0032] In some embodiments, the frame 5 includes a support table, and a plurality of spaced support beams are provided on the support table. The fixture 8 is installed on the support beams. The fixture 8 can be installed in a detachable manner and can be selectively installed at different positions on the support beams. The water collecting tank 7 is arranged below the support table. The waste generated when the abrasive water jet processing device processes the carbon fiber composite workpiece 3 can flow downward into the water collecting tank 7 through the gaps between the support beams.

[0033] In some embodiments, a waterproof cover 1 is further provided on the frame 5. The waterproof cover 1 can prevent the abrasive and high-pressure water from splashing and affecting the electrical equipment on the combined processing device and the processing environment. One side of the waterproof cover 1 can be connected to the frame 5 by a hinge. When rough machining is required, cover the waterproof cover 1 on the frame 5. After the processing is completed, open the waterproof cover 1 to take out the processed workpiece.

[0034] In some embodiments, the combined processing device further includes a dust removal device 6, which can be arranged on the second moving device. The dust removal device 6 is used to absorb the dust generated when the carbon fiber composite workpiece 3 is machined by the machining device, so as to avoid the influence of the cutting generated by the machining on the processing environment.

[0035] The embodiment of the present invention also provides a combined processing method for carbon fiber composites. Using the combined processing device provided in any of the above embodiments, the carbon fiber composite workpiece 3 is processed. The combined processing method includes the following steps:

[0036] Fix the carbon fiber composite workpiece 3 to be processed on the fixture 8 to ensure the position stability of the carbon fiber composite workpiece 3 during processing.

[0037] Start the abrasive water jet machining device to rough machine the carbon fiber composite workpiece 3. Among them, the rough machining of the carbon fiber composite workpiece 3 can be completed at one time according to the preset machining path. After the rough machining is completed, start the subsequent processes.

[0038] Start the machining device to finish machine the carbon fiber composite workpiece 3 that has been rough machined by the water jet machining device. Among them, the removal of the rough machining allowance and the damaged area can be completed once or multiple times to complete the machining of the required geometric features.

[0039] Since the machining accuracy of the abrasive water jet machining device is relatively low, it can be used for rough machining. After rough machining, the machining device can be used for finish machining, which can ensure the machining accuracy. Combining the two can effectively reduce the machining cost and improve the machining quality.

[0040] In some embodiments, the rough machining allowance of the carbon fiber composite workpiece 3 is 4 mm, the water cutting pressure of the abrasive water jet machining device is any value within the range of 400 - 500 Mpa, the flow rate is 5.0 L / min, and the cutting speed is 1000 mm / min. The above values are only preferred and can be adjusted according to actual needs.

[0041] In some embodiments, the tool of the machining device is a multi-edge flat-end end mill with a diameter of 8.0 mm, the spindle speed of the machining device is 6000 r / min, and the cutting speed is 100 mm / min. The above values are only preferred and can be adjusted according to actual needs.

[0042] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0043] In the embodiments described in this specification, a progressive approach is adopted. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0044] The above has introduced in detail a combined processing device and method for carbon fiber composite materials provided by the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A combined processing device for carbon fiber composite materials, characterized in that, Including: A frame, a fixture, an abrasive water jet machining device and a machining device arranged on the frame. The fixture is used to fix the carbon fiber composite workpiece to be machined; the abrasive water jet machining device is used to rough machine the carbon fiber composite workpiece; the machining device is used to finish machine the carbon fiber composite workpiece after being rough machined by the water jet machining device.

2. The combined processing equipment according to claim 1, characterized in that, The combined machining equipment further includes a first moving device and a second moving device arranged on the frame. The abrasive water jet machining device includes an abrasive water jet spindle. The first moving device is used to adjust the position of the abrasive water jet spindle; the machining device includes a machining spindle. The second moving device is used to adjust the position of the machining spindle.

3. The combined processing equipment according to claim 2, characterized in that, The combined machining equipment further includes a controller. The controller is connected to the first moving device and the second moving device. The controller is used to control the first moving device and the second moving device to move according to a preset machining trajectory.

4. The combined processing equipment according to claim 1, characterized in that A water collecting tank is arranged inside the frame. The water collecting tank is used to collect the waste generated when the abrasive water jet machining device machines the carbon fiber composite workpiece.

5. The combined processing equipment according to claim 4, wherein The frame includes a support table. A plurality of support beams arranged at intervals are provided on the support table. The fixture is installed on the support beams. The water collecting tank is arranged below the support table.

6. The combined processing equipment according to claim 4, characterized in that, A waterproof cover is further arranged on the frame.

7. The combined processing equipment according to claim 1, characterized in that, The combined machining equipment further includes a dust removal device. The dust removal device is used to absorb the dust generated when the machining device machines the carbon fiber composite workpiece.

8. A combined processing method for carbon fiber composite materials, applying the combined processing equipment according to any one of claims 1 to 7, characterized in that, The combined machining method includes the following steps: Fix the carbon fiber composite workpiece to be machined on the fixture; Start the abrasive water jet machining device to rough machine the carbon fiber composite workpiece; Start the machining device to finish machine the carbon fiber composite workpiece after being rough machined by the water jet machining device.

9. The combined machining method according to claim 8, characterized in that, The rough machining allowance is 4 mm. The water cutting pressure of the abrasive water jet machining device is any value within the range of 400 - 500 Mpa, the flow rate is 5.0 L / min, and the cutting speed is 1000 mm / min.

10. The combined processing equipment according to claim 9, characterized in that, The tool of the machining device is a multi-edge flat-end end mill with a diameter of 8.0 mm. The spindle speed of the machining device is 6000 r / min, and the cutting speed is 100 mm / min.

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