Non-ultrasonic processing technology of glass cloth honeycomb material

Abstract

The invention discloses a non-ultrasonic machining process for a glass cloth honeycomb material. The non-ultrasonic machining process comprises the following steps: S1, roughing a part blank; s2, carrying out cutting groove design on the part blank after rough machining; s3, the cutting groove is machined according to different profile features; s4, redundant materials are roughly removed according to the second molded surface, the cutting groove face A depth is cut off through the tool route, and machining is conducted in the L direction; and S5, the step S3 is repeated until the allowance larger than or equal to 9 mm is removed, 1 mm is reserved, finish machining is conducted through a piece milling cutter, and non-ultrasonic machining of the glass cloth honeycomb material is completed. According to the method, the problem of node cracking caused by overlarge cutting force generated in the traditional processing of the glass cloth honeycomb material part is solved, and the high-quality qualification rate of the glass cloth honeycomb material part can still be ensured when ultrasonic equipment and a cutter are not adopted by the glass cloth honeycomb material part by adopting the process; and the production efficiency and the high-quality percent of pass of products are greatly improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing of honeycomb core materials, and in particular to a non-ultrasonic processing technology of a glass cloth honeycomb material. Background Art

[0002] With the development of contemporary electronic information technology, electromagnetic pollution, electromagnetic interference, and leakage caused by electromagnetic wave radiation have attracted widespread attention, especially in the fields of aerospace and military. Shielding and absorption of electromagnetic waves have become an important consideration for material selection. Honeycomb absorbing materials are increasingly widely used in the fields of communication and radar system clutter suppression, anti-electromagnetic interference, and RCS reduction (referring to reducing the radar scattering cross section of the target by technical means, thereby reducing the possibility of being detected by radar) due to their light weight, high strength, structural strength and good absorption performance. Honeycomb absorbing materials are made through a series of complex processes such as impregnation, curing, and pressing. As a sandwich structure, they are widely used in aircraft flaps, ailerons, wall panels, rotors, tails and other components. At present, the most widely used honeycomb absorbing materials are aramid paper honeycombs (Nomex honeycombs) and glass cloth honeycombs. Compared with aramid paper honeycombs, glass cloth honeycombs have good strength and stiffness, excellent dielectric properties, corrosion resistance, and high temperature resistance, but factors such as high brittleness, poor toughness, and poor node connectivity have led to limitations in the use of glass cloth honeycombs.

[0003] Due to the characteristics of the glass cloth honeycomb material blank itself, it is easy to cause quality problems such as node connection joint disconnection due to the cutting force generated by the tool during conventional processing, resulting in a low yield rate of parts, and at the same time, the processing efficiency and applicability are also relatively low. In the processing of glass cloth honeycomb material parts, research has found that new processing techniques play a very important role. Traditional processing techniques are difficult to meet the efficient processing of glass cloth honeycomb material parts. Therefore, in view of the low yield rate and poor applicability of existing glass cloth honeycomb material parts, the present invention provides a non-ultrasonic processing process for glass cloth honeycomb materials, which is used in the processing process of glass cloth honeycomb material parts. Summary of the invention

[0004] The purpose of the present invention is to provide a non-ultrasonic machining process for glass cloth honeycomb materials to solve the technical problem in the prior art that glass cloth honeycomb material blanks are easily disconnected due to the cutting force generated by the tool during conventional machining, resulting in a low part yield.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a non-ultrasonic processing technology for a glass cloth honeycomb material, comprising the following steps: S1. Roughing the part blank using a honeycomb combined tool, roughing the theoretical profile of the part blank to be greater than or equal to 10 mm; S2, using a milling cutter to design a cutting groove on the roughened part blank; S3, processing the cutting groove of the part blank according to different profile features; S4. Use a milling cutter or honeycomb combination tool with a 1°~5° forward inclination angle and remove excess material according to the allowance of the second roughing of the profile. The tool path is the depth of the A surface of the broken cutting groove, and the part blank is processed along the L direction; S5. Repeat step S3 until the excess of the mold surface is greater than or equal to 9 mm, and use a milling cutter to fine-process the remaining 1 mm excess of the mold surface to complete the non-ultrasonic processing of the glass cloth honeycomb material.

[0006] Furthermore, the slice milling cutter or honeycomb combined cutter used is the cutter in publication number CN216858350U.

[0007] Furthermore, when the chipping groove is designed in step S2, the depth of the chipping groove A surface is 0.5-1 mm less than the depth of the chipping groove B surface.

[0008] Furthermore, in step S2, the rough machining of the blank is followed by the second rough machining, and the remaining amount must be greater than or equal to 10 mm. The cracking of the conventional process nodes within 10 mm is very serious.

[0009] Furthermore, in the step S3, the profile features are divided into planes and curved surfaces. When the profile is close to a plane, the chipping groove is designed to be unidirectionally distributed. The chipping groove is parallel to the W direction. When processing the chipping groove, the tool path is perpendicular to the chipping groove.

[0010] Furthermore, when the profile in step S3 is a curved surface, the chipping grooves are designed to be cross-distributed and evenly distributed over the entire profile, and when the chipping grooves are processed, the tool path is parallel to the L direction.

[0011] Based on the above technical solution, the embodiments of the present invention can at least produce the following technical effects: (1) Due to the raw material characteristics of glass cloth honeycomb (the connectivity between nodes of glass cloth honeycomb is weaker than that of aramid paper honeycomb), compared with the traditional honeycomb processing technology, a chipping groove is added during the second roughing (to reduce the cutting force of the tool during material processing). When ultrasonic tools are not used, the node cracking caused by excessive cutting force during processing is guaranteed to the maximum extent. In addition, the addition of the chipping groove greatly reduces the dust generated during processing (the chips produced by traditional processing are flaky or broken, while the chips produced by this process are blocky).

[0012] (2) The problem of excessive cutting force in traditional processing of glass cloth honeycomb material parts leading to node cracking has been solved. This process can ensure the high quality pass rate of glass cloth honeycomb material parts without the use of ultrasonic equipment and cutting tools, greatly improving the production efficiency and high quality pass rate of the products, and has significant economic and social value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0014] Figure 1 Schematic diagram of the dimensions of the milling cutter according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the dimensions of the honeycomb combined cutter according to an embodiment of the present invention; Figure 3 Schematic diagram of the single distribution of the chipping grooves according to an embodiment of the present invention; Figure 4 Schematic diagram of the cross distribution of the chipping grooves according to an embodiment of the present invention; Figure 5 2. It is a schematic diagram of the size of the chipping groove according to an embodiment of the present invention; Figure 6 Schematic diagram of the A surface of the cutting groove size according to an embodiment of the present invention; Figure 7 Schematic diagram of the B surface of the cutting groove size of the embodiment of the present invention; Figure 8 This is a schematic diagram of a rough route of Embodiment 2 of the present invention; Fig. 9 It is a process flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0016] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0017] like Figure 1-2 As shown, the slice milling cutter and honeycomb combined cutter used in the present invention are both cutters with publication number CN216858350U.

[0018] Example 1 like Fig. 9 As shown, the present invention provides a non-ultrasonic processing process for glass cloth honeycomb material, comprising the following steps: S1. Roughing the part blank using a honeycomb combined tool, roughing the theoretical profile of the part blank to be greater than or equal to 10 mm; S2. After the rough machining of the part blank, the remaining amount must be greater than or equal to 10 mm during the second rough machining, and a milling cutter is used to design a cutting groove for the rough machined part blank; S3. When the profile is close to the plane, the chipping groove is designed as a single distribution (such as Figure 3 , 5 As shown), the chipping groove is parallel to the W direction, and the tool path is perpendicular to the chipping groove when processing the chipping groove; S4. Use a milling cutter or honeycomb combination tool with a 1°~5° forward tilt angle and remove excess material according to the allowance of the second roughing of the profile. The tool path is to the depth of the A surface of the broken cutting groove, and the part blank is processed along the L direction (such as Figure 8 shown); S5. Repeat step S3 until the excess of the mold surface is greater than or equal to 9 mm, and use a milling cutter to fine-process the remaining 1 mm excess of the mold surface to complete the non-ultrasonic processing of the glass cloth honeycomb material.

[0019] In this embodiment, Figure 6-7 As shown, when the chipping groove is designed in step S2, the depth of the chipping groove A surface is 0.5-1 mm less than the depth of the chipping groove B surface.

[0020] Example 2 like Fig. 9 As shown, the present invention provides a non-ultrasonic processing process for glass cloth honeycomb material, comprising the following steps: S1. Roughing the part blank using a honeycomb combined tool, roughing the theoretical profile of the part blank to be greater than or equal to 10 mm; S2. After the rough machining of the part blank, the remaining amount must be greater than or equal to 10 mm during the second rough machining, and a milling cutter is used to design a cutting groove for the rough machined part blank; S3, when the profile is a curved surface, the chipping groove is designed to be cross-distributed (such as Figure 4 , 5 As shown), the entire profile is evenly distributed, and the tool path is parallel to the L direction when processing the cutting groove; S4. Use a milling cutter or honeycomb combination tool with a 1°~5° forward tilt angle to remove excess material according to the second roughing of the profile. The tool path is to cut the depth of the A surface of the groove and process along the L direction (such as Figure 8 shown); S5. Repeat step S3 until the excess of the mold surface is greater than or equal to 9 mm, and use a milling cutter to fine-process the remaining 1 mm excess of the mold surface to complete the non-ultrasonic processing of the glass cloth honeycomb material.

[0021] In this embodiment, Figure 6-7 As shown, when the chipping groove is designed in step S2, the depth of the chipping groove A surface is 0.5-1 mm less than the depth of the chipping groove B surface.

[0022] The structures, functions and connection forms disclosed in this article can be implemented in other ways. For example, the embodiments described above are only exemplary, for example, multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A non-ultrasonic processing technology for glass cloth honeycomb material, characterized in that: The following steps are involved: S1. Roughing the part blank using a honeycomb combined tool, roughing the theoretical profile of the part blank to be greater than or equal to 10 mm; S2, using a milling cutter to design a cutting groove on the roughened part blank; S3, processing the cutting groove of the part blank according to different profile features; S4. Use a milling cutter or honeycomb combination tool with a 1°~5° forward inclination angle and remove excess material according to the allowance of the second roughing of the profile. The tool path is the depth of the A surface of the broken cutting groove, and the part blank is processed along the L direction; S5. Repeat step S3 until the excess of the mold surface is greater than or equal to 9 mm, and use a milling cutter to fine-process the remaining 1 mm excess of the mold surface to complete the non-ultrasonic processing of the glass cloth honeycomb material.

2. The non-ultrasonic machining process of glass cloth honeycomb material according to claim 1, characterized in that: When the chipping groove is designed in step S2, the depth of the chipping groove A surface is 0.5-1 mm less than the depth of the chipping groove B surface.

3. The non-ultrasonic machining process of glass cloth honeycomb material according to claim 1, characterized in that: In step S2, the rough machining of the part blank is followed by secondary rough machining, and the profile allowance must be greater than or equal to 10 mm.

4. The non-ultrasonic machining process of glass cloth honeycomb material according to claim 1, characterized in that: In the step S3, the profile features are divided into planes and curved surfaces. When the profile is close to a plane, the chipping groove is designed to be unidirectionally distributed. The chipping groove is parallel to the W direction. When the chipping groove is processed, the tool path is perpendicular to the chipping groove.

5. The non-ultrasonic machining process of glass cloth honeycomb material according to claim 4, characterized in that: When the profile in step S3 is a curved surface, the chipping grooves are designed to be cross-distributed and evenly distributed over the entire profile, and when the chipping grooves are processed, the tool path is parallel to the L direction.

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