Skin fast automatic marking device based on large arc skin bonding tooling

Abstract

The present invention discloses a skin fast automatic marking device based on a large arc-shaped skin gluing tool, comprising a tool body, a marking positioning assembly and an automatic marking assembly; the marking positioning assembly is arranged on the tool body, and is used to press the skin and provide a standard marking reference for skin fine-tuning; the automatic marking assembly is used to cooperate with the marking positioning assembly to automatically mark the skin. The present invention realizes automatic marking of the skin by arranging the automatic marking assembly, and the marking process can ensure uniform marking by keeping the vertical position of the marking knife fixed, and uneven marking will not occur, and the marked line can be guaranteed to be a straight line, avoiding marking errors.

Description

Technical Field

[0001] The invention relates to the technical field of aerospace processing equipment, and in particular to a skin fast automatic marking device based on a large-scale arc-shaped skin bonding tool. Background Art

[0002] At present, composite materials have been widely used in aviation, aerospace, automobile and other fields due to their excellent high specific strength, high specific modulus, designability and fatigue resistance. Composite materials generally include inner skin, outer skin and honeycomb panel. The molding method is that the honeycomb panel is sandwiched between the inner skin and the outer skin, and the three are fixed by colloid bonding. The bonding process needs to be carried out on the bonding tool.

[0003] Before gluing, the inner and outer skins are too large due to molding errors, so the inner and outer skins need to be fine-tuned. The fine-tuning process is: the skin is set on the gluing tooling, and the standard size line is drawn on the skin. Then, the excess part is cut based on the standard size line. In the current production, marking is done manually, and the marking process is easy to cause the marking line to be not straight, resulting in subsequent processing errors; the force is uneven during marking, and the marking line is not clear, and it needs to be re-marked, otherwise it will affect the cutting. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a skin rapid automatic marking device based on a large-scale arc-shaped skin bonding tool. Automatic marking of the skin is achieved by setting an automatic marking component. The marking process can ensure uniform marking by keeping the vertical position of the marking knife fixed, and uneven marking will not occur. It can also ensure that the marked lines are straight lines, avoiding marking errors.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A skin fast automatic marking device based on a large arc-shaped skin bonding tool, comprising a tool body, a marking positioning component and an automatic marking component;

[0007] The marking and positioning assembly is arranged on the tooling body, and is used to press the skin and provide a standard marking reference for fine-tuning the skin;

[0008] The automatic marking assembly is used to cooperate with the marking and positioning assembly to automatically mark the skin.

[0009] Further, the scribing and positioning assembly comprises a first side scribing block, a second side scribing block, a first bottom scribing block and a second bottom scribing block, wherein the first side scribing block, the second side scribing block, the first bottom scribing block and the second bottom scribing block form a scribing frame connected end to end, and the inner side edge of the scribing frame is adapted to the four sides of the standard skin; the inner side surface of the first bottom scribing block is provided with a first mounting groove, the first mounting groove is provided with a first rack, the inner side surface of the second side scribing block is provided with a second mounting groove, the second mounting groove is provided with a second rack, the inner side surface of the second bottom scribing block is provided with a third mounting groove, the third mounting groove is provided with a third rack, and the two ends of the second mounting groove are respectively connected with the first mounting groove and the third mounting groove to form a concave structure;

[0010] The automatic marking assembly includes an assembly box body, a marking needle, a telescopic connecting piece and a planetary gear. The marking needle is connected to the assembly box body through the telescopic connecting piece, and the two ends of the telescopic connecting piece are rotatably connected to the marking needle and the assembly box body respectively; the planetary gear is arranged in the assembly box body, the sun gear of the planetary gear is driven by a motor, there are three planetary pinions of the planetary gear and they are arranged in an equilateral triangle, the connecting shaft of the planetary pinions is rotatably connected to the assembly box body, and the three connecting shafts are sequentially provided with a first driving gear, a second driving gear and a third driving gear, the first driving gear is meshed with the first rack, when the first driving gear leaves the first rack, the second driving gear is meshed with the second rack, when the second driving gear leaves the second rack, the third driving gear is meshed with the third rack.

[0011] Furthermore, it also includes an assembly positioning block, wherein two ends of the assembly positioning block are provided with sliding grooves, and the two ends of the assembly positioning block are slidably matched with the first side marking block and the second side marking block through the sliding grooves.

[0012] Furthermore, a connecting circular sleeve is provided on the outside of the marking needle, and the telescopic connecting piece and the connecting circular sleeve are rotatably connected.

[0013] Furthermore, a cylindrical sleeve is provided between the connecting circular sleeve and the marking needle, the cylindrical sleeve is fixedly connected to the marking needle, and the connecting circular sleeve is threadedly connected to the cylindrical sleeve.

[0014] Furthermore, the connecting surfaces between the first bottom scribing block and the second side scribing block and between the second side scribing block and the second bottom scribing block are 45-degree inclined surfaces.

[0015] Furthermore, the first installation groove, the second installation groove and the third installation groove are provided with limiting grooves, and the assembly box body is slidably connected to the limiting grooves via a cubic or cylindrical limiting block.

[0016] Furthermore, the telescopic connecting piece includes a sleeve and a telescopic rod, the telescopic rod is slidably arranged in the sleeve, and a spring is arranged between the telescopic rod and the sleeve.

[0017] The beneficial effects of the present invention are:

[0018] The present invention realizes automatic marking of the skin by arranging an automatic marking assembly. During the marking process, the marking can be ensured to be uniform by keeping the vertical position of the marking knife fixed, and uneven marking will not occur. The marked line can be ensured to be a straight line, avoiding marking errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a skin rapid automatic marking device based on a large-scale arc-shaped skin bonding tool in an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a second side scribing block, a first bottom scribing block, and a second bottom scribing block;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of the local A in the middle;

[0022] Figure 4 It is a top view of the automation line components;

[0023] Figure 5 is a cross-sectional view of an automation line assembly;

[0024] Figure 6 is a structural schematic diagram of a telescopic connector;

[0025] Figure 7 is a schematic diagram of the structure when the first rack is meshing with the first driving gear;

[0026] Figure 8 is a schematic diagram of the structure when the second rack is meshing with the second driving gear;

[0027] Fig. 9 is a schematic diagram of the structure when the third rack is meshing with the third driving gear;

[0028] In the figure, 1, tool body; 2, marking and positioning assembly; 3, automatic marking assembly; 4, first side marking block; 5, second side marking block; 6, first bottom marking block; 7, second bottom marking block; 8, first rack; 9, second rack; 10, third rack; 11, assembly box; 12, marking needle; 13, telescopic connecting piece; 14, planetary gear; 15, connecting shaft; 16, first driving gear; 17, second driving gear; 18, third driving gear; 19, assembly positioning block; 20, connecting circular sleeve; 21, cylindrical sleeve; 22, first mounting groove; 23, second mounting groove; 24, third mounting groove; 25, sleeve; 26, telescopic rod; 27, spring. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 9 , the present invention provides a technical solution:

[0031] Example:

[0032] like Figure 1-Figure 9 As shown, a skin fast automatic marking device based on a large-scale arc-shaped skin gluing tool comprises a tool body 1, a marking positioning component 2 and an automatic marking component 3;

[0033] The marking and positioning assembly 2 is arranged on the tooling body 1, and is used to press the skin and provide a standard marking reference for fine-tuning the skin;

[0034] The automatic marking assembly 3 is used to cooperate with the marking and positioning assembly 2 to automatically mark the skin.

[0035] The tool body 1 includes a base, an arc-shaped support plate and an arc-shaped panel. The arc-shaped support plate is arranged on the base, and the panel is fixedly arranged on the arc-shaped support plate. The panel is adapted to the shape of the part, as shown in the figure.

[0036] like Figure 1-Figure 3As shown, the scribing and positioning assembly 2 includes a first side scribing block 4, a second side scribing block 5, a first bottom scribing block 6, and a second bottom scribing block 7. The first side scribing block 4, the second side scribing block 5, the first bottom scribing block 6, and the second bottom scribing block 7 form a scribing frame connected end to end, and the inner side edge of the scribing frame is adapted to the four sides of the standard skin; the inner side of the first bottom scribing block is provided with a first mounting groove 22, and the first mounting groove 22 is provided with a first rack 8, the inner side of the second side scribing block 5 is provided with a second mounting groove 23, and the second mounting groove 23 is provided with a second rack 9, the inner side of the second bottom scribing block 7 is provided with a third mounting groove 24, and the third mounting groove 24 is provided with a third rack 10, and the two ends of the second mounting groove 23 are respectively connected with the first mounting groove 22 and the third mounting groove 24 to form a concave structure;

[0037] like Figure 1-Figure 9 As shown, the automatic marking assembly 3 includes an assembly box body 11, a marking needle 12, a telescopic connection member 13 and a planetary gear 14, wherein the marking needle 12 is connected to the assembly box body 11 through the telescopic connection member 13, and the two ends of the telescopic connection member 13 are respectively rotatably connected to the marking needle 12 and the assembly box body 11; the planetary gear 14 is arranged in the assembly box body 11, the sun gear of the planetary gear 14 is driven by a motor, the planetary gear 14 has three planetary pinions and is arranged in an equilateral triangle, the connecting shaft 15 of the planetary pinions is rotatably connected to the assembly box body 11, and the three connecting shafts 15 are sequentially provided with a first drive gear 16, a second drive gear 17, and a third drive gear 18, the first drive gear 16 is meshed with the first rack 8, when the first drive gear 16 leaves the first rack 8, the second drive gear 17 is meshed with the second rack 9, when the second drive gear 17 leaves the second rack 9, the third drive gear 18 is meshed with the third rack 10.

[0038] Among them, only one driving gear is arranged on one connecting shaft 15 .

[0039] The connection surfaces between the first bottom marking block 6 and the second side marking block 5 and between the second side marking block 5 and the second bottom marking block 7 are 45-degree inclined surfaces. The telescopic connector 13 includes a sleeve 25 and a telescopic rod 26, wherein the telescopic rod 26 is slidably disposed in the sleeve 25, and a spring 27 is disposed between the telescopic rod 26 and the sleeve 25.

[0040] Working principle: (1) Fix the first side marking block 4 to the tooling body 1.

[0041] (2) One of the long sides of the skin to be trimmed is pressed against the first side marking block 4 and supported by the tooling body 1.

[0042] (3) Assemble the second side marking block 5, the first bottom marking block 6, and the second bottom marking block 7 into place, and press the remaining three sides of the skin by the second side marking block 5, the first bottom marking block 6, and the second bottom marking block 7 respectively.

[0043] (4) Automatically mark the skin using the automatic marking component 3. Specifically:

[0044] (4.1) Marking of the first bottom surface marking block 6: Start the motor, the motor drives the planetary gear 14 to rotate, when the planetary gear 14 rotates, its image pinion moves synchronously, the planetary pinion drives the connecting shaft 15 to rotate, the first drive gear 16, the second drive gear 17 and the third drive gear 18 on the connecting shaft 15. At this time, the first drive gear 16 is meshed with the first rack 8, the second drive gear 17 and the third drive gear 18 are idling, when the first drive gear 16 rotates, it drives the automatic marking assembly 3 as a whole to make a linear motion along the first bottom surface marking block 6, and then completes the marking of the standard line corresponding to the first bottom surface marking block 6. When the first drive gear 16 disengages from the first rack 8, the first bottom surface marking is almost finished, at this time the telescopic connecting member 13 is stretched to times of its original length, and the telescopic connecting member 13 rotates 45 degrees during this process.

[0045] (4.2) Marking by the second side marking block 5: The second drive gear 17 is meshed with the second rack 9. When the second drive gear 17 moves, the telescopic connection member 13 rotates 90 degrees when the second drive gear 17 moves to the original length, and the telescopic connection member 13 is reset. When the second drive gear 17 continues to move, it drives the automatic marking assembly 3 as a whole to make a linear movement along the second side marking block 5, thereby completing the marking of the standard line corresponding to the second side marking block 5. When the second drive gear 17 is disengaged from the second rack 9, the second side marking is almost finished, and the telescopic connection member 13 is stretched to times of its original length. In this process, the telescopic connection member 13 rotates 45 degrees (relative to the initial rotation of 135 degrees).

[0046] (4.3) Marking by the second bottom marking block 7: The third drive gear 18 is meshed with the third rack 10, and the first drive gear 16 and the second drive gear 17 are idle. When the third drive gear 18 moves, the telescopic connection member 13 rotates 90 degrees (relative to the initial rotation of 180 degrees), and the telescopic connection member 13 is reset. When the third drive gear 18 continues to move, it drives the automatic marking assembly 3 to move linearly along the second bottom marking block 7 as a whole, thereby completing the marking of the standard line corresponding to the second bottom marking block 7.

[0047] (5) Cutting off the excess part: After the marking is completed, remove the second side marking block 5 and the first and second bottom marking blocks 7, remove the skin, and manually or by a milling machine, cut off the excess part based on the marked line as the reference line to complete the skin adjustment.

[0048] In the above process, the automated line is divided into three stages of straight line marking. After the previous stage of marking is completed, it automatically turns and the turning is at a right angle to avoid the rounded corner turning that causes the four corners to be unable to mark. And each stage is driven by the same drive source, without the need to set up an additional drive mechanism, simplifying the structure of the automated line components.

[0049] The present invention realizes automatic marking of the skin by setting up an automatic marking component 3. During the marking process, the marking can be ensured to be uniform by keeping the vertical position of the marking knife fixed, and uneven marking will not occur. The marked line can be ensured to be a straight line, avoiding marking errors.

[0050] Furthermore, if Figure 1 As shown, it also includes an assembly positioning block 19, and two ends of the assembly positioning block 19 are provided with slide grooves, and the two ends of the assembly positioning block 19 are slidably matched with the first side marking block 4 and the second side marking block 5 through the slide grooves. The spacing between the two slide grooves on the assembly positioning block 19 is the width of the standard skin.

[0051] The assembly positioning block 19 is used to position the two side marking blocks. The assembly positioning block 19 slides along the length direction of the first side marking block 4 and the second side marking block 5. If the movement is smooth from beginning to end, it proves that the side marking blocks are assembled in place. Otherwise, the side marking blocks need to be adjusted.

[0052] Furthermore, if Figure 3 and Figure 5 As shown, a connecting circular sleeve 20 is disposed outside the marking needle 12 , and the telescopic connecting member 13 is rotatably connected to the connecting circular sleeve 20 .

[0053] A cylindrical sleeve 21 is provided between the connecting circular sleeve 20 and the marking needle 12 . The cylindrical sleeve 21 is fixedly connected to the marking needle 12 . The connecting circular sleeve 20 is threadedly connected to the cylindrical sleeve 21 .

[0054] Such an arrangement can adjust the tightness between the marking needle 12 and the skin by twisting the marking needle 12, thereby adjusting the lightness of the marking (marking depth).

[0055] Furthermore, if Figure 2 and Figure 3 As shown, the first mounting groove 22, the second mounting groove 23, and the third mounting groove 24 are provided with limit grooves, and the assembly box body 11 is slidably connected to the limit grooves through a cubic or cylindrical limit block. This arrangement is to ensure that the driving gear is meshed with the rack.

[0056] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. Rapid automatic marking device for skin based on large arc-shaped skin bonding tooling, Features: It includes a tool body, a marking and positioning component and an automatic marking component; The marking and positioning assembly is arranged on the tooling body, and is used to press the skin and provide a standard marking reference for fine-tuning the skin; The automatic marking assembly is used to cooperate with the marking and positioning assembly to automatically mark the skin; The scribing and positioning assembly comprises a first side scribing block, a second side scribing block, a first bottom scribing block and a second bottom scribing block, wherein the first side scribing block, the second side scribing block, the first bottom scribing block and the second bottom scribing block form a scribing frame connected end to end, and the inner side edge of the scribing frame is adapted to the four sides of the standard skin; the inner side of the first bottom scribing block is provided with a first mounting groove, the first mounting groove is provided with a first rack, the inner side of the second side scribing block is provided with a second mounting groove, the second mounting groove is provided with a second rack, the inner side of the second bottom scribing block is provided with a third mounting groove, the third mounting groove is provided with a third rack, and the two ends of the second mounting groove are respectively connected with the first mounting groove and the third mounting groove to form a concave structure; The automatic marking assembly includes an assembly box body, a marking needle, a telescopic connecting piece and a planetary gear. The marking needle is connected to the assembly box body through the telescopic connecting piece, and the two ends of the telescopic connecting piece are rotatably connected to the marking needle and the assembly box body respectively; the planetary gear is arranged in the assembly box body, the sun gear of the planetary gear is driven by a motor, there are three planetary pinions of the planetary gear and they are arranged in an equilateral triangle, the connecting shaft of the planetary pinions is rotatably connected to the assembly box body, and the three connecting shafts are sequentially provided with a first driving gear, a second driving gear and a third driving gear, the first driving gear is meshed with the first rack, when the first driving gear leaves the first rack, the second driving gear is meshed with the second rack, when the second driving gear leaves the second rack, the third driving gear is meshed with the third rack.

2. According to the skin fast automatic marking device based on the large-scale arc-shaped skin bonding tooling according to claim 1, Features: It also includes an assembly positioning block, wherein two ends of the assembly positioning block are provided with sliding grooves, and the two ends of the assembly positioning block are slidably matched with the first side marking block and the second side marking block through the sliding grooves.

3. According to the skin fast automatic marking device based on the large-scale arc skin bonding tooling according to claim 1, Features: A connecting circular sleeve is arranged outside the marking needle, and the telescopic connecting piece is rotatably connected to the connecting circular sleeve.

4. According to claim 3, the skin fast automatic marking device based on the large arc skin bonding tooling, Features: A cylindrical sleeve is arranged between the connecting circular sleeve and the marking needle, the cylindrical sleeve is fixedly connected to the marking needle, and the connecting circular sleeve is threadedly connected to the cylindrical sleeve.

5. According to claim 1, the skin fast automatic marking device based on the large arc skin bonding tooling, Features: The connecting surfaces between the first bottom scribing block and the second side scribing block and between the second side scribing block and the second bottom scribing block are 45-degree inclined surfaces.

6. According to claim 1, the skin fast automatic marking device based on the large arc skin bonding tooling, Features: The first installation groove, the second installation groove and the third installation groove are provided with limiting grooves, and the assembly box body is slidably connected to the limiting grooves through a cubic or cylindrical limiting block.

7. According to claim 1, the skin fast automatic marking device based on the large arc skin bonding tooling, Features: The telescopic connecting piece comprises a sleeve and a telescopic rod. The telescopic rod is slidably arranged in the sleeve. A spring is arranged between the telescopic rod and the sleeve.

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