Universal conversion tool for aircraft skin processing
By designing a universal conversion tooling for aircraft skin processing, the problems of multiple tooling specifications, high cost, and inconvenient management in the existing technology are solved, achieving cost savings and improved processing efficiency.
Patent Information
- Application Number
- CN202423126544.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-18
AI Technical Summary
In the current process of manufacturing aircraft skin parts, there are too many tooling specifications, high costs, inconvenient management, and frequent tooling changes that take a long time, making it impossible to achieve standardized clamping.
Design a universal conversion tooling, including a base plate, main support column, precision height-increasing nut and skin tooling, which are connected by threaded fasteners to realize the modular design and height adjustment of the tooling, and adapt to the fixing of skins of different specifications.
It has achieved cost savings in tooling, standardized clamping, improved processing efficiency and tooling management convenience, and reduced the defect rate of tooling manufacturing and processing.
Smart Images
Figure CN223630219U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of aircraft parts processing, and particularly relates to a general conversion tool for aircraft skin processing. BACKGROUND
[0002] In the machining and production process of the existing aircraft skin parts, most of the parts are thin-walled composite materials formed integrally, and due to the differences in size and shape of the parts, special skin tooling is required for machining. The parts are subject to design changes at any time, resulting in excessive tooling specifications, high cost, and a large number of toolings that are difficult to manage. The frequent replacement of toolings requires a large number of times, and the tooling adjustment time is longer than the cutting processing time. In addition, the sizes of the parts and the heights of the fixing surfaces are inconsistent, which cannot realize the standardization of process personnel clamping. SUMMARY
[0003] The utility model aims to provide a general conversion tool for aircraft skin processing, which can save the design cost and tooling cost of skin processing steps, is convenient to use, facilitates clamping standardization, and improves work efficiency.
[0004] The embodiment of the utility model is implemented as follows:
[0005] A general conversion tool for aircraft skin processing, the general conversion tool comprising: a base plate, a plurality of main support columns, a precision height-increasing nut, and a skin tooling, the main support column is in the shape of a circular truncated cone as a whole, the lower bottom of the main support column is in contact with the surface of the base plate, a first assembly groove for assembling a first threaded fixing member is formed in the side wall of the main support column, a first pressing hole is arranged at the bottom of the first assembly groove, and the main support column is fixed on the base plate through the first threaded fixing member; a second pressing hole is arranged at the top of the main support column; a second assembly groove for assembling a second threaded fixing member is arranged at the middle of the precision height-increasing nut, a third pressing hole is arranged at the bottom of the second assembly groove, and the precision height-increasing nut is fixed in the second pressing hole of the main support column through the second threaded fixing member; a fourth pressing hole is arranged at the top of the precision height-increasing nut; the skin tooling is an arc-shaped pipe segment with horizontal fixing surfaces at both ends, a plurality of connecting holes are arranged on the horizontal fixing surfaces, and the skin tooling is fixedly connected with the top of the main support column or the top of the precision height-increasing nut through a third threaded fixing member connected with the second pressing hole or the fourth pressing hole.
[0006] In the preferable embodiment of the utility model, the first assembly groove comprises: a first tangent plane, a first rectangular groove and an expansion groove, the first tangent plane is a trapezoidal tangent plane formed by cutting part of the vertical side of the main support column, the first rectangular groove is a first rectangular groove body with smooth corners formed by slotting along the first tangent plane towards the central axis of the main support column, the bottom of the first rectangular groove body is provided with a first pressing hole, and the expansion groove is arranged at the upper part of the first rectangular groove and forms a second rectangular groove body with smooth corners and greater width than the first rectangular groove body by expanding upwards at the middle part of the first rectangular groove.
[0007] In the preferable embodiment of the utility model, the horizontal section of the first pressing hole is a playground shape, and the first pressing hole center inside coincides with the central axis of the main support column.
[0008] In the preferable embodiment of the utility model, the main support column comprises a first cylinder, a first circular truncated cone and a second cylinder connected in sequence from top to bottom, the diameter of the first cylinder is the same as the upper base diameter of the first circular truncated cone, the diameter of the second cylinder is the same as the lower base diameter of the first circular truncated cone, the first assembly groove is located on the first circular truncated cone, the first pressing hole is located on the second cylinder, and the second pressing hole is located on the first cylinder.
[0009] In the preferable embodiment of the utility model, the second assembly groove comprises: a second tangent plane and a third rectangular groove, the second tangent plane is a rectangular tangent plane formed by cutting part of the vertical side of the precision height nut to form a rectangular tangent plane in the middle part of the precision height nut, the third rectangular groove is a third rectangular groove body with smooth corners formed by slotting along the second tangent plane towards the central axis of the precision height nut, and the bottom of the third rectangular groove body is provided with a third pressing hole.
[0010] In the preferable embodiment of the utility model, the horizontal section of the third pressing hole is a playground shape, and the third pressing hole center inside coincides with the central axis of the precision height nut.
[0011] In the preferable embodiment of the utility model, the universal conversion tool further comprises a precision height washer, and the precision height washer is arranged on the upper base surface of the main support column.
[0012] In the preferable embodiment of the utility model, a plurality of positioning threaded holes arranged in an array are arranged on the base plate.
[0013] In the preferable embodiment of the utility model, the first threaded fixing member and the second threaded fixing member comprise an internal hexagonal screw.
[0014] In the preferable embodiment of the utility model, the inner wall of the arc-shaped pipe section of the skin tool is provided with a plurality of reinforcing ribs.
[0015] The embodiment of the utility model has the advantages that the general conversion frock in the utility model is specially designed according to the aircraft skin process, and the main support column can be freely arranged on the base plate according to the different skin frock, for fixing the skin frock of different specifications, when the height is not enough, the precise height increasing nut and / or precise height increasing washer can be selected to adjust the height, ensuring the fixing precision of each part, and the whole conversion frock adopts standardized design, facilitating frock management and application, and saving a large amount of frock design cost. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can be obtained without the creative labor on the premise.
[0017] Fig. 1 It is general conversion frock split diagram for aircraft skin processing of the embodiment of the utility model;
[0018] Fig. 2 It is the structural schematic diagram of main support column of the embodiment of the utility model;
[0019] Fig. 3 It is the structural schematic diagram of precise height increasing nut of the embodiment of the utility model;
[0020] Icon: base plate 110;Positioning threaded hole 111;Main support column 120;First assembly groove 121;First section 1211;First rectangular groove 1212;Expansion tank 1213;First pressing hole 122;First cylinder 123;First circular truncated cone 124;Second cylinder 125;Second pressing hole 126;Skin frock 130;Connecting hole 131;Stiffening rib 132;Precise height increasing washer 140;Precise height increasing nut 150;Second assembly groove 151;Second section 1511;Third rectangular groove 1512;Third pressing hole 152;Fourth pressing hole 153;First threaded fixing piece 160;Second threaded fixing piece 170. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the following will combine the drawings in the embodiment of the utility model, and the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based upon the embodiments of the application, all other embodiments that would be obtained by one of ordinary skill in the art without having inventive effort are within the scope of the application.
[0023] It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings.
[0024] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are merely for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0026] In the description of the application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0027] First embodiment
[0028] Please refer to Figs. 1-3The embodiment provides a universal conversion tool for aircraft skin processing, which is used for efficient and accurate processing of aircraft skin composite parts, and mainly aims at improving the mutual property of the skin tool, and the unique support device design makes the rapid switching of the tool more convenient and fast; the clamping is quick and reliable, and the cost of each link can be reduced. The universal conversion tool comprises a base plate 110, a plurality of main support columns 120, a skin tool 130, and / or a precision heightening washer 140 and a precision heightening nut 150. According to the specific structure and specification of the skin tool 130, the skin tool 130 is fixed on the base plate 110 through the plurality of main support columns 120, the main support columns 120 can be freely arranged on the standardized matrix base plate 110; when the height of the main support column 120 is not enough, one or more precision heightening washers 140 and / or precision heightening nuts 150 can be adaptively selected to pad the main support column 120, so as to ensure the stability of the skin tool 130.
[0029] Specifically, the base plate 110 is a plate body with a plurality of rectangular array distributed positioning threaded holes 111, the main support column 120 can be freely selected and fixed according to the structure of the skin tool 130, and is arranged on the standardized matrix base plate 110 through threads.
[0030] The threaded matrix base plate 110 is provided with threaded holes and positioning holes, and the matrix spacing can be designed according to the size of the processed part. Before designing the tool, the tool designer can first import the threaded matrix base plate 110 and the main support column 120; the tool is designed on the reference of the threaded matrix base plate 110, so that the designed tool can be applied to the modularization of the threaded matrix base plate 110.
[0031] Please refer to Fig. 2 The main support column 120 is in the shape of a circular truncated cone, and the main support column 120 can be independently used for parts and matched with other tools. The standardized design is convenient for management and application, and can save a large amount of tool design cost. After the main support column 120 is assembled, the lower bottom thereof is in contact with the upper surface of the base plate 110. The sidewall of the main support column 120 is provided with a first assembly groove 121 for assembling the first threaded fixing part 160, and the bottom of the first assembly groove 121 is provided with a first pressing hole 122. After the first threaded fixing part 160 enters the first assembly groove 121, the first threaded fixing part 160 is pressed into the first pressing hole 122, so that the bottom thread of the first threaded fixing part 160 can be threadedly connected with the positioning threaded hole 111, and the main support column 120 is fixed on the base plate 110.
[0032] The first assembly groove 121 comprises a first tangent surface 1211, a first rectangular groove 1212 and an expansion groove 1213. The first tangent surface 1211 is a trapezoidal tangent surface formed by cutting part of the structure vertically downward along the side surface of the main supporting column 120. The first rectangular groove 1212 is formed by slotting along the first tangent surface 1211 to the central axis direction of the main supporting column 120 to form a first rectangular groove body with rounded corners. The bottom of the first rectangular groove body is provided with a first pressing hole 122. The expansion groove 1213 is arranged at the upper part of the first rectangular groove 1212 and expands upward at the middle part of the first rectangular groove 1212 to form a second rectangular groove body with rounded corners and a width greater than that of the first rectangular groove body, which facilitates the placement of the first threaded fixing member 160 into the first pressing hole 122 position during assembly.
[0033] The horizontal cross section of the first pressing hole 122 is a playground shape, wherein the center of the first pressing hole 122 inside coincides with the central axis of the main supporting column 120, so as to facilitate the rapid adjustment of the position of the first threaded fixing member 160 after being placed in the first pressing hole 122 position, thereby being able to quickly adjust according to different positions to be fixed of the skin tool 130.
[0034] The main supporting column 120 is not a standard circular truncated cone body, but comprises a first cylinder 123, a first circular truncated cone 124 and a second cylinder 125 connected in sequence from top to bottom. The diameter of the first cylinder 123 is the same as the upper base diameter of the first circular truncated cone 124, the diameter of the second cylinder 125 is the same as the lower base diameter of the first circular truncated cone 124, the first assembly groove 121 is located on the first circular truncated cone 124, the first pressing hole 122 is located on the second cylinder 125, and the second pressing hole is located on the first cylinder 123.
[0035] The top of the main supporting column 120 is provided with a second pressing hole 126 for assembling the skin tool 130, or, when the height is not enough, assembling the precision height washer 140 and / or the precision height nut 150. In the application stage, different heights of the main supporting column 120 can be replaced according to the application situation, and standard parts can also be used in combination according to the use height.
[0036] Please refer to Fig. 3 The middle part of the precision height nut 150 is provided with a second assembly groove 151 for assembling the second threaded fixing member 170, the bottom of the second assembly groove 151 is provided with a third pressing hole 152, the precision height nut 150 is fixed in the second pressing hole 126 of the main supporting column 120 through the second threaded fixing member 170, and the top of the precision height nut 150 is provided with a fourth pressing hole 153.
[0037] The skin tool 130 is an arc-shaped pipe segment with horizontal fixing surfaces at both ends. A plurality of connecting holes 131 are arranged on the horizontal fixing surfaces. The second pressing hole 126 or the fourth pressing hole 153 is connected through the third threaded fixing member, so that the skin tool 130 is fixedly connected with the top of the main support column 120 or the top of the precision heightening nut 150.
[0038] The second assembly groove 151 includes a second cut surface 1511 and a third rectangular groove 1512. The second cut surface 1511 is a vertical downward cut part of the side surface of the precision heightening nut 150, so as to form a rectangular cut surface in the middle of the precision heightening nut 150. The third rectangular groove 1512 is a third rectangular groove 1512 body formed by grooving along the second cut surface 1511 in the direction of the central axis of the precision heightening nut 150. The third rectangular groove 1512 body is provided with a third pressing hole 152 at the bottom. The horizontal section of the third pressing hole 152 is a playground shape, and the center of the third pressing hole 152 inside coincides with the central axis of the precision heightening nut 150.
[0039] The precision heightening nut 150 and the main support column 120 are designed similarly. Compared with the fixing mode of only arranging a threaded hole at the central axis, the precision heightening nut 150 and the main support column 120 can better adapt to the use requirements of different skin tools 130. Threaded holes are arranged on the support column and the base plate, so as to facilitate the connection and application between the components.
[0040] The precision heightening washer 140 is used to reduce the direct contact between the skin and the tool. The precision heightening washer 140 is arranged on the upper bottom surface of the main support column 120 or the upper surface of the precision heightening nut 150.
[0041] In the application link, different heights of the main support column 120 can be replaced according to the application situation. The main support column 120, the precision heightening nut 150 and the precision heightening washer 140 can also be combined for use according to the height. Threaded holes are arranged on the main support column 120 and the base plate, so as to facilitate the connection and application between the components. Other tools can be designed according to the threaded matrix base plate.
[0042] In the embodiment, the first threaded fixing member 160 and the second threaded fixing member 170 are selected as internal hexagonal screws. In other embodiments, other types of screw fixing members can also be selected.
[0043] The inner wall of the arc-shaped pipe segment of the skin tool 130 is provided with a plurality of reinforcing ribs 132, so as to ensure the stability of the skin tool 130.
[0044] In summary, the universal conversion tool in the embodiment has the advantages of strong interchangeability of modular design, design of multiple standard support pieces, free assembly of multiple schemes, provision of effective strength and assembly precision of the tool, safety and reliability, simplification of processing schemes for small batches of multiple specifications of thin-wall skin composite materials, reduction of tooling manufacturing and processing costs, reduction of part processing failure rate, and improvement of production efficiency.
[0045] The specification describes examples of embodiments of the present application and does not mean that all possible forms of the present application are described and explained. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings need not be drawn to scale; some features can be enlarged or reduced to show details of specific components. The specific structure and function details disclosed should not be interpreted as a limiting explanation, but only as a representative basis for teaching those skilled in the art to implement the present application in various forms. Those skilled in the art should understand that the features described with reference to any one drawing and description can be combined with the features described in one or more other drawings to form embodiments that are not explicitly described or explained. The combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present application can be used as needed for specific applications or implementations.
[0046] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A universal conversion tooling for aircraft skin processing, characterized in that, The universal conversion tooling includes: a substrate; a plurality of main support columns, which are overall frustoconical, the lower bottom of the main support column is in contact with the surface of the substrate, the sidewall of the main support column is provided with a first assembly groove for assembling a first threaded fixing member, the bottom of the first assembly groove is provided with a first pressing hole, and the main support column is fixed on the substrate through the first threaded fixing member; the top of the main support column is provided with a second pressing hole; a precision heightening nut, the middle part of the precision heightening nut is provided with a second assembly groove for assembling a second threaded fixing member, the bottom of the second assembly groove is provided with a third pressing hole, and the precision heightening nut is fixed in the second pressing hole of the main support column through the second threaded fixing member; the top of the precision heightening nut is provided with a fourth pressing hole; a skin tooling, which is an arc-shaped pipe segment with horizontal fixing surfaces at both ends, the horizontal fixing surfaces are provided with a plurality of connecting holes, and the skin tooling is fixedly connected with the top of the main support column or the top of the precision heightening nut through a third threaded fixing member.
2. The universal conversion tooling for aircraft skin machining of claim 1, wherein, The first assembly groove includes: a first tangent plane, which is a trapezoidal tangent plane formed by vertically cutting part of the sidewall of the main support column downward; a first rectangular groove, which is a first rectangular groove body with smooth corners formed by grooving along the first tangent plane toward the central axis of the main support column; the bottom of the first rectangular groove body is provided with the first pressing hole; an expansion groove, which is arranged at the upper part of the first rectangular groove and expands upward at the middle part of the first rectangular groove to form a second rectangular groove body with smooth corners and a width greater than that of the first rectangular groove body.
3. The universal conversion tooling for aircraft skin machining of claim 2, wherein, The horizontal cross section of the first pressing hole is a playground shape, wherein the first pressing hole center inside is coincident with the central axis of the main support column.
4. The universal conversion tooling for aircraft skin machining of claim 3, wherein, The main support column includes a first cylinder, a first frustum and a second cylinder connected in sequence from top to bottom, wherein the diameter of the first cylinder is the same as the upper bottom diameter of the first frustum, the diameter of the second cylinder is the same as the lower bottom diameter of the first frustum, the first assembly groove is located on the first frustum, the first pressing hole is located on the second cylinder, and the second pressing hole is located on the first cylinder.
5. The universal conversion tooling for aircraft skin machining of claim 1, wherein, The second assembly groove includes: a second tangent plane, which is a rectangular tangent plane formed by vertically cutting part of the sidewall of the precision heightening nut downward; a third rectangular groove, which is a third rectangular groove body with smooth corners formed by grooving along the second tangent plane toward the central axis of the precision heightening nut, and the bottom of the third rectangular groove body is provided with the third pressing hole.
6. The universal conversion tooling for aircraft skin machining of claim 5, wherein, The horizontal cross section of the third pressing hole is a playground shape, wherein the third pressing hole center inside is coincident with the central axis of the precision heightening nut.
7. The universal conversion tooling for aircraft skin machining of claim 1, wherein, The universal conversion tooling further includes a precision heightening washer, which is arranged on the upper bottom surface of the main support column.
8. The universal conversion tooling for aircraft skin machining of claim 1, wherein, The substrate is provided with a plurality of positioning threaded holes arranged in an array.
9. The universal conversion tooling for aircraft skin machining of claim 1, wherein, The first threaded fixing member and the second threaded fixing member include an internal hexagonal screw.
10. The universal conversion tooling for aircraft skin machining of claim 1, wherein, The inner wall of the arc-shaped pipe section of the skin tool is provided with a plurality of reinforcing ribs.