Post-treatment cutting tool for high-strength carbon fiber composite automobile stiffening beams

Abstract

The utility model relates to a post-processing cutting tool for automobile stiffening beams made of high-strength carbon fiber composite materials, belongs to the technical field of parts of new energy automobiles, and overcomes the defects of layering, burrs, scratches and the like during post-processing cutting of existing products made of the high-strength carbon fiber composite materials. A post-processing cutting tool for high-strength carbon fiber composite automobile stiffening beams comprises a tool body and a vacuum air guide system. The vacuum gas guide system comprises a gas guide groove located in the surface of the tool body, a vacuum gas guide pipe distributed in the tool body and communicated with the gas guide groove and a gas guide pipe connector. The vacuum air guide pipe comprises more than one vacuum air guide branch pipe and one vacuum air guide main pipe, and the vacuum air guide branch pipes are connected with the vacuum air guide main pipe through reducing tees; an outlet of the vacuum air guide main pipe is located in the side wall of the tool body and connected with an air guide pipe connector through threads, and the air guide pipe connector is connected with external vacuum equipment. And rapid and firm clamping of the high-strength carbon fiber composite product is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy automobile parts, in particular to a post-processing cutting tool for high-strength carbon fiber composite material automobile reinforcement beams. Background Art

[0002] In order to reduce automobile energy consumption, it is unstoppable to change vehicle components from metal materials to lighter carbon fiber composite materials. Lighter carbon fiber composite materials will directly affect the overall power performance and fuel economy of the car, and lighter carbon fiber composite materials can also reduce production costs.

[0003] However, in the production process of high-strength carbon fiber composite materials, due to the limitations of the production process, the finished product will have excess or burrs. In order to obtain qualified products, the high-strength carbon fiber composite materials need to be post-processed and cut. However, in the process of using a five-axis machining center to cut high-strength carbon fiber composite products, there will be defects such as delamination, burrs, and thread caused by improper product fixation, which affects product quality. In addition, during the cutting process, the general fixture needs to be clamped multiple times to complete the product processing, which affects production efficiency. Utility Model Content

[0004] In view of the above analysis, the utility model aims to provide a post-processing cutting tool for high-strength carbon fiber composite automotive reinforcement beams, so as to solve at least one of the defects such as delamination, burrs, and thread defects during post-processing cutting of existing high-strength carbon fiber composite products and uneven force during the clamping process.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] A post-processing cutting tool for high-strength carbon fiber composite material automobile reinforcement beam, comprising a tool body and a vacuum air guide system;

[0007] The vacuum gas guide system includes a gas guide groove located on the surface of the tool body, a vacuum gas guide pipe distributed inside the tool body and connected to the gas guide groove, and a gas guide pipe joint;

[0008] The vacuum gas pipe includes more than one vacuum gas branch pipe and one vacuum gas main pipe, and the vacuum gas branch pipe is connected to the vacuum gas main pipe through a reducing tee;

[0009] The vacuum air guide pipe outlet is located on the side wall of the tooling body and is connected to the air guide pipe joint through a thread, and the air guide pipe joint is connected to an external vacuum device.

[0010] Further, the vacuum air guide branch pipe is arranged vertically, and the vacuum air guide main pipe is arranged horizontally; one end of the vacuum air guide branch pipe is communicated with the gas diversion groove, and the other end is communicated with the vacuum air guide main pipe.

[0011] It should be noted that the diameters of the multiple vacuum air guide branch pipes increase along the gas flow direction during vacuum pumping.

[0012] Further, the gas diversion groove includes an outer diversion groove and an inner diversion groove that are communicated with each other.

[0013] Preferably, a plastic strip is embedded in the outer diversion groove, and the arrangement of the plastic strip matches the shape of the automotive reinforcing beam product to be processed.

[0014] Specifically, the inner diversion grooves are arranged in a cross shape, and the inner diversion grooves and the outer diversion groove are arranged in an overall shape of a Chinese character 'Ri' (日), and adjacent sides of the 'Ri' shape are shared.

[0015] Further, the outlet of the vacuum air guide branch pipe is arranged at the cross intersection point.

[0016] Further, a sealed cavity is formed between the automotive reinforcing beam product to be processed and the tooling body through the plastic strip, and the sealed cavity is evacuated by the vacuum air guide system and an external vacuum device.

[0017] Preferably, the automotive reinforcing beam product includes a bottom plate and a front bending portion, a rear bending portion, a left groove, and a right groove connected to the bottom plate. The outer shape of the tooling body includes left and right protrusions that fit the product, and the plastic strip is arranged on the upper surface between the two protrusions on both sides of the tooling body.

[0018] Exemplarily, the material of the cutting post-treatment tooling is 6082 aluminum alloy.

[0019] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:

[0020] 1. By optimizing the diameter and arrangement of the vacuum air guide pipe, the present utility model maintains a high vacuum pumping efficiency, and at the same time makes the gas flow uniform during the vacuum pumping process, thereby ensuring uniform suction force at different positions in the tooling adsorption area.

[0021] 2. By optimizing the structural layout of the gas diversion groove and adopting the 'Ri' shape layout, the present utility model reduces the ineffective circulation of gas, improves the vacuum pumping efficiency, and the 'Ri' shape layout makes the gas flow uniformly during the vacuum pumping process, the pressure distribution in the cavity is uniform, and prevents the product to be processed from being locally deformed or collapsed under negative pressure.

[0022] 3. The utility model adjusts the vacuum adsorption area by controlling the size and number of the gas guide grooves, and regulates the adsorption strength between the product and the tooling to adapt to different cutting stresses and cutting processes, with high flexibility.

[0023] 4. The utility model combines the product to be processed with the post-processing cutting tool into a closed cavity through a plastic strip, and fixes the product through vacuum adsorption. The connection is stable, the adhesion is strong, and it is not easy to slide, which improves the cutting stability and avoids cutting defects such as delamination, burrs, and thread defects caused by improper product fixation.

[0024] 5. The utility model fixes the product to be processed and the cutting tool by vacuum adsorption, which can reduce the number of clamping times, make the installed force of the product to be processed more uniform, and prevent deformation due to force; and the structure is simple, easy to disassemble and assemble, and improve the post-processing efficiency.

[0025] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0027] Figure 1 This is a schematic diagram of the cutting tool structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the reinforced beam product to be processed according to the utility model;

[0029] Figure 3 This is a schematic diagram of the cutting tool of the utility model from the left side;

[0030] Figure 4 This is a schematic diagram of the assembly relationship between the cutting tool and the product to be processed of the utility model.

[0031] Reference numerals:

[0032] 1. Products of the reinforced beam type to be processed; 101. Bottom plate; 102. Left groove; 103. Right groove; 104. Front bending part; 105. Rear bending part; 2. Tooling body; 201. Left protrusion; 202. Right protrusion; 3. Gas diversion groove; 301. Peripheral diversion groove; 302. Internal diversion groove; 4. Vacuum duct; 401. Vacuum air diversion branch pipe; 402. Vacuum air diversion main pipe; 5. Duct joint; 6. Plastic strip; 7. Sealed cavity. Detailed implementation mode

[0033] The following combines the attached drawings to specifically describe the preferred embodiments of the present invention. Among them, the attached drawings form a part of this application and are used together with the embodiments of the present invention to explain the principle of the present invention, and are not used to limit the scope of the present invention.

[0034] A specific embodiment of the present invention discloses a post-treatment cutting tooling for high-strength carbon fiber composite automotive reinforced beam products, including a tooling body and a vacuum air diversion system;

[0035] The vacuum air diversion system includes a gas diversion groove located on the surface of the tooling body, a vacuum duct distributed inside the tooling body and communicating with the gas diversion groove, and a duct joint;

[0036] The vacuum duct includes more than 1 vacuum air diversion branch pipe and 1 vacuum air diversion main pipe. The vacuum air diversion branch pipe is connected to the vacuum air diversion main pipe through a reducing tee;

[0037] The outlet of the vacuum air diversion main pipe is located on the side wall of the tooling body and is connected to the duct joint through a thread. The duct joint is connected to an external vacuum device.

[0038] Further, the gas diversion groove includes a mutually connected peripheral diversion groove and an internal diversion groove. The internal diversion groove is arranged in a cross shape. The internal diversion groove and the peripheral diversion groove are arranged in an overall shape of a Chinese character 'Ri' (日), and adjacent sides of the 'Ri' shape share a common side.

[0039] Preferably, the peripheral diversion groove is embedded with a plastic strip. The arrangement of the plastic strip matches the shape of the automotive reinforced beam product to be processed; a sealed cavity 7 is formed between the automotive reinforced beam product to be processed and the tooling body through the plastic strip, and the sealed cavity is evacuated through the vacuum air diversion system and an external vacuum device;

[0040] The automotive reinforced beam product includes a bottom plate and a front bending part, a rear bending part, a left groove, and a right groove connected to the bottom plate. The shape of the tooling body includes a left protrusion and a right protrusion that fit the product. The plastic strip is arranged on the upper surface between the two protrusions on both sides of the tooling body;

[0041] When evacuating, screw the gas pipe connector into the outlet of the main vacuum gas pipe, and ensure that the airtightness is achieved before evacuating to the required vacuum degree for processing the product; after processing, unscrew the gas pipe connector from the vacuum gas pipe, and the product can be removed.

[0042] In a possible design, the internal flow guide groove is an arc with a diameter of 10 mm and a height of 7 mm, and the interval between each row is 110 mm. The distribution area is designed into ten groups according to the cutting stress of the high-strength carbon fiber composite automotive reinforcement beam; the peripheral flow guide groove is an arc with a diameter of 10 mm and a height of 7 mm. The diameter of the plastic strip is 10 mm, which is completely clamped into the peripheral flow guide groove, and the height is 3 mm higher than the peripheral flow guide groove. The protruding part fits with the corresponding part of the product to be processed such as the top cover; the dimensional cooperation relationship between the plastic strip and the air guide groove ensures that the position of the plastic strip is fixed and not easily disengaged, further ensuring high airtightness.

[0043] The external dimensions, the number and the position of the gas flow guide grooves are designed according to the shape of the product to be processed; the overall arrangement structure of the gas flow guide grooves adopts a "day" - shaped layout, which reduces the ineffective circulation of gas, improves the vacuum evacuation efficiency, and makes the gas flow evenly during the vacuum evacuation process, so that the pressure distribution in the cavity is uniform, preventing the product to be processed from being locally deformed or collapsed under negative pressure; the arc - shaped gas flow guide grooves make the air flow path smoother, effectively reducing turbulence and pressure loss, and further avoiding the product to be processed from being locally deformed or collapsed under negative pressure.

[0044] Further, the vacuum gas branch pipes are arranged vertically, and the main vacuum gas pipe is arranged horizontally; one end of the vacuum gas branch pipe is communicated with the gas flow guide groove, and the other end is communicated with the main vacuum gas pipe; the outlet of the vacuum gas branch pipe is arranged at the cross - point.

[0045] It should be noted that the diameters of the multiple vacuum gas branch pipes increase along the gas flow direction during vacuum evacuation, as Figure 1 shown;

[0046] In a possible design, the diameters of the vacuum gas branch pipes are 12 mm and 14 mm in sequence along the vacuum gas flow direction, the hole depth is 60 mm perpendicular to the gas flow guide groove, and there are two in total. The diameter of the main vacuum gas pipe is 16 mm.

[0047] During the vacuum evacuation process, along the gas flow direction, the air pressure decreases. The diameters of the vacuum gas branch pipes are set to gradually increase along the gas flow direction in the main vacuum gas pipe, so that the gas flow distribution in each area of the sealed cavity is more uniform, maintaining a high vacuum evacuation efficiency and ensuring uniform suction at different positions in the工装吸附区域 (the specific name of this area needs to be further determined according to the context).

[0048] Exemplarily, the material of the cutting post - processing tooling is 6082 aluminum alloy, and the material of the plastic strip is rubber.

[0049] When the post-cutting processing tool is used, first fix the post-processing tool body 2 on the work surface of the machining center, and then embed the plastic strip into the peripheral guide groove 301;

[0050] Place the reinforced beam product 1 to be processed in the corresponding position of the tooling after the shape of the tooling body 2 is completely matched;

[0051] The air guide pipe joint 5 is connected to the outlet of the vacuum air guide main pipe 402 by means of a threaded connection, and the air in the closed cavity 7 formed by the product to be processed and the tooling body is absorbed by the vacuum air guide branch pipe 401 and the gas guide groove 3 through an external vacuum device to make it reach a negative pressure state with a vacuum degree of 1MPa, thereby fixing the reinforced beam-like product to be processed 1; after the product to be processed 1 and the cutting tooling body 2 are fixed, the whole is placed in a CNC machine tool for post-cutting processing; after the processing is completed, the air guide pipe joint 5 is unscrewed to remove the product 1.

[0052] To sum up, the utility model combines the product to be processed and the post-processing cutting tool into a closed cavity, fixes the product by vacuum adsorption, has a stable connection, strong adhesion, is not easy to slide, improves the cutting stability, and avoids cutting defects such as delamination, burrs, and thread cutting caused by improper product fixation; optimizes the structural layout of the gas guide groove, adopts a sun-shaped layout, reduces the ineffective circulation of gas, improves the vacuuming efficiency, makes the gas flow evenly during the vacuuming process, and evenly distributes the pressure in the cavity, thereby preventing the product to be processed from being locally deformed or collapsed under negative pressure; optimizes the diameter and arrangement of the vacuum air pipe, maintains a high vacuuming efficiency, and makes the gas flow evenly during the vacuuming process, thereby ensuring uniform suction at different positions of the tooling adsorption area; fixes the product to be processed and the cutting tool by vacuum adsorption, which can reduce the number of clamping times, make the installed force of the product to be processed more uniform, and prevent deformation due to force.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A post-processing cutting tool for high-strength carbon fiber composite material automobile reinforcement beams, characterized in that: Including tooling body and vacuum gas guide system; The vacuum gas guide system includes a gas guide groove located on the surface of the tool body, a vacuum gas guide pipe distributed inside the tool body and connected to the gas guide groove, and a gas guide pipe joint; The vacuum gas pipe includes more than one vacuum gas branch pipe and one vacuum gas main pipe, and the vacuum gas branch pipe is connected to the vacuum gas main pipe through a reducing tee; The vacuum air guide pipe outlet is located on the side wall of the tooling body and is connected to the air guide pipe joint through a thread, and the air guide pipe joint is connected to an external vacuum device.

2. The post-processing cutting tool according to claim 1, characterized in that: The vacuum gas guiding branch pipe is arranged in the vertical direction, and the vacuum gas guiding main pipe is arranged in the horizontal direction; one end of the vacuum gas guiding branch pipe is connected to the gas guiding groove, and the other end is connected to the vacuum gas guiding main pipe.

3. The post-processing cutting tool according to claim 2, characterized in that: The diameters of the plurality of vacuum gas guiding branch pipes increase gradually along the gas flow direction during vacuuming.

4. The post-processing cutting tool according to claim 1, characterized in that: The gas guide groove comprises an outer guide groove and an inner guide groove which are connected to each other.

5. The post-processing cutting tool according to claim 4, characterized in that: The outer guide groove is embedded with plastic strips, and the arrangement of the plastic strips matches the shape of the automobile reinforcement beam product to be processed.

6. The post-processing cutting tool according to claim 4, characterized in that: The internal guide grooves are arranged in a cross shape, and the internal guide grooves and the peripheral guide grooves are arranged in a sun shape as a whole, and adjacent sun-shaped adjacent edges are shared.

7. The post-processing cutting tool according to claim 2, characterized in that: The outlet of the vacuum gas guide pipe is arranged at the cross point of the internal guide groove.

8. The post-processing cutting tool according to claim 5, characterized in that: The automobile reinforcement beam product to be processed forms a closed cavity between the plastic strip and the tooling body, and the closed cavity is evacuated through a vacuum air guide system and external vacuum equipment.

9. The post-processing cutting tool according to claim 8, characterized in that: The automobile reinforcement beam product includes a base plate and a front bending portion, a rear bending portion, a left groove, and a right groove connected to the base plate. The shape of the tooling body includes a left protrusion and a right protrusion that fit the product. The plastic strip is arranged on the upper surface between the protrusions on both sides of the tooling body.

10. The post-processing cutting tool according to claim 1, characterized in that: The material of the post-processing cutting tool is 6082 aluminum alloy.

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