Precise line drawing tool and method for repairing gap between folding mechanism hatch cover and skin part

Abstract

The invention provides a folding mechanism hatch cover and skin part gap repairing and matching accurate line drawing tool and method, and belongs to the field of modern aircraft manufacturing and assembly.The folding mechanism hatch cover and skin part gap repairing and matching accurate line drawing tool comprises a grip, a ruler pen cap, a fixed stop block and a limiting stop block, and the fixed stop block and the limiting stop block are fixed to the side face of the lower portion of the grip; the limiting check block is attached to the edge of a folding mechanism hatch cover or a skin part to serve as a line drawing reference, the ruler pen sleeve transversely penetrates into the grip, the end of the ruler pen sleeve clamps the line drawing pen, the ruler part is provided with scales and used for adjusting the line drawing position to the theoretical position, and line drawing operation of allowance lines and fastener edge distance lines is completed. According to the method, different positioning references are selected, different line drawing operations are completed, the requirement for gaps between parts can be met, the requirement for the edge distance of a fastener can also be met, and therefore on the premise that the requirement for aircraft assembly specifications is met, the assembly efficiency of an operator is greatly improved, and the production period is shortened.

Description

Technical Field

[0001] The present invention belongs to the field of modern aircraft manufacturing and assembly, and provides a tool and method for accurately drawing lines for gap repair between a folding mechanism cabin cover and skin parts, which are used to solve the problem of drawing lines for gap repair between a folding mechanism cabin cover and skin parts and to ensure the margin of fasteners on the edge of the skin during aircraft assembly. Background Art

[0002] In the modern aircraft assembly and manufacturing process, due to the closed-loop dimensional errors accumulated due to part manufacturing errors and assembly positioning errors, margins are usually reserved on the parts to be installed to compensate for the accumulated errors. In the actual aircraft assembly process, the operator needs to repair the margins according to the actual situation and specification requirements to achieve the gaps between parts that meet the technical specifications. At present, in the actual operation process, the operator often uses a marker pen to mark the parts by hand-held steel rulers to determine the size of the margin to be removed and the size of the hole margin. However, due to the irregular shape and large curvature of the parts used in aircraft positioning assembly, it is impossible to draw an accurate margin reference line or hole margin size line on the parts. Therefore, the entire repair process requires the operator to repeatedly disassemble and assemble the parts to meet the gap value or margin value required in the technical specifications. The disadvantage of the above operation process is that the gap value of the seam and the margin of the fastener are uneven after repair, and it needs to be disassembled and re-confirmed many times, which seriously affects the production cycle. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a precise marking tool and method for gap repair between a folding mechanism hatch cover and skin parts. The tool of the present invention selects different parts as references, and completes the drawing operation of the allowance line and the fastener margin line by adjusting different scale positions on the handle. When the folding mechanism hatch cover is used as a reference, the parts on one side of the skin can be marked, and the allowance line can be accurately and quickly drawn on the compensating skin with an allowance; when the skin allowance removal operation is completed, the skin edge is used as the positioning reference, and the fastener margin line is drawn on the skin with a marking pen.

[0004] The specific technical solutions of the present invention are as follows:

[0005] A precise marking tool for gap repair between a folding mechanism hatch and skin parts, the marking tool comprising a grip 1, a ruler pen cover 2, a line pen fastening bolt 3, a ruler fastening bolt 4, a fixed stop screw 5, a fixed stop 6, a limit stop screw 7, a limit stop 8, and a bottom nylon block 9.

[0006] The handle 1 is a columnar structure, with a transversely arranged strip through hole in the middle for the ruler pen cover 2 to pass through and move in the strip through hole. A threaded through hole is provided in the middle of the side of the strip through hole for the ruler fastening bolt 4 to be screwed into and fix the ruler pen cover 2. A fixed stopper 6 is fixed below the opening on one side of the strip through hole by a fixed stopper screw 5, and the bottom surface of the fixed stopper 6 is not lower than the bottom surface of the handle 1. When in use, the bottom surface of the handle 1 is attached to the folding mechanism hatch, and a bottom nylon block 9 is fixed to the bottom surface of the handle 1 to avoid scratches.

[0007] The limit stop block 8 is a sheet-like structure, which is fixed to the side of the fixed stop block 6 away from the handle 1 by the limit stop block screw 7. The lower end of the limit stop block 8 protrudes from the bottom surface of the handle 1, and both side surfaces of the limit stop block 8 are reference planes, among which the side close to the handle 1 is the reference plane C, and the other side is the reference plane D, which are used to fit with the edge of the folding hatch cover mechanism and the edge of the repaired skin respectively as a reference for drawing lines.

[0008] The main body of the ruler pen cover 2 is a ruler with scales, one end of which is set as an annular pen cover. The axis of the annular pen cover is in the vertical direction for inserting a marking pen. A threaded hole is formed on the side of the annular pen cover for screwing in a pen fastening bolt 3 to fix the marking pen. The length of the ruler pen cover 2 extending out of the bar through hole on the handle 1 is adjusted according to the theoretical gap value, and the extended length is determined by reading the scale value on the ruler. The thickness of the fixed block 6 has been subtracted from the scale on the ruler during design, that is, the scale where the ruler is exposed from the handle 1 is the theoretical gap value.

[0009] Furthermore, the fixed stopper 6 and the limit stopper 8 are detachably connected and can be combined as needed according to different part structures and clearance requirements.

[0010] A precise line drawing method for gap repair between a folding mechanism hatch cover and a skin part is implemented based on the above-mentioned line drawing tool, and the method comprises the following steps:

[0011] The first step is to place the tool: place the drawing tool in the joint edge area between the folding mechanism hatch cover 10 and the skin part 11, the bottom nylon stopper 9 is in contact with the upper surface of the folding mechanism hatch cover 10, and the limit stopper 8 is placed in the joint, and the reference surface C of the limit stopper 8 is in contact with the edge of the folding mechanism hatch cover 10.

[0012] The second step is to adjust the ruler: rotate and loosen the ruler fastening bolt 4, adjust the length of the ruler fastening bolt 4 extending out of the grip 1, and when the scale value displayed on the ruler pen cover 2 is consistent with the theoretical gap value, tighten the ruler fastening bolt 4 to complete the ruler adjustment operation.

[0013] The third step is to install the marking pen: rotate and loosen the pen fastening bolt 3, put the marking pen into the annular pen cover of the ruler pen cover 2 until the tip of the marking pen contacts the upper surface of the skin part 11, tighten the pen fastening bolt 3, and complete the installation of the marking pen.

[0014] The fourth step is to draw the excess trajectory line: hold the upper part of the handle 1, move the drawing tool along the edge of the folding mechanism hatch 10 in the seam area, and use the marking pen to draw a precise excess trajectory line on the skin part 11, that is, determine the excess part to be removed on the skin part 11, complete the precise drawing operation, and carry out subsequent repair work.

[0015] Step 5. Draw the fastener margin line: Install the drawing tool according to steps 1 to 3, move the handle 1 so that the reference surface D of the limit stop 8 is aligned with the edge of the repaired skin part 11, adjust the position of the ruler pen cap 2 until the ruler scale is equal to the theoretical margin of the fastener plus the thickness of the limit stop 8, tighten the ruler fastening bolts 4 to fix the position of the ruler pen cap 2; hold the upper part of the handle 1, move the drawing tool along the edge of the skin part 11, draw the fastener margin line, and arrange the points according to this margin line to meet the design requirements.

[0016] The beneficial effects of the present invention are as follows: the present invention can complete different line drawing operations by selecting different positioning references under different circumstances, which can achieve both the gap requirements between parts and the margin requirements of fasteners, thereby greatly improving the assembly efficiency of operators and shortening the production cycle under the premise of meeting the requirements of aircraft assembly specifications, and providing a precise line drawing tool and method for the repair and drawing of gap areas between the edges of modern aircraft assembly parts and the drawing of part margins. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention, wherein (a) is a front view and (b) is an AA cross-sectional view.

[0018] Figure 2 This is an axonometric drawing of the present invention.

[0019] Figure 3 It is a schematic diagram of the principle of the present invention.

[0020] In the figure: 1 handle; 2 ruler pen cover; 3 pen fastening bolt; 4 ruler fastening bolt; 5 fixed stopper screw; 6 fixed stopper; 7 limit stopper screw; 8 limit stopper; 9 bottom nylon block; 10 folding mechanism cabin cover; 11 skin parts. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments improved or adjusted by ordinary technicians in this field based on the embodiments of the present invention belong to the protection scope of the present invention.

[0022] The present embodiment provides a precise marking tool for gap repair between a folding mechanism hatch and a skin part, the marking tool comprising a grip 1, a ruler pen cover 2, a pen fastening bolt 3, a ruler fastening bolt 4, a fixed stopper screw 5, a fixed stopper 6, a limit stopper screw 7, a limit stopper 8, and a bottom nylon block 9, such as Figure 1 and Figure 2 shown.

[0023] The handle 1 is a columnar structure, with a transversely arranged strip through hole in the middle for the ruler pen cover 2 to pass through and move in the strip through hole. A threaded through hole is provided in the middle of the side of the strip through hole for the ruler fastening bolt 4 to be screwed into and fix the ruler pen cover 2. A fixed stopper 6 is fixed below the opening on one side of the strip through hole by a fixed stopper screw 5, and the bottom surface of the fixed stopper 6 is not lower than the bottom surface of the handle 1. When in use, the bottom surface of the handle 1 is attached to the folding mechanism hatch, and a bottom nylon block 9 is fixed to the bottom surface of the handle 1 to avoid scratches.

[0024] The limit stop block 8 is a sheet-like structure, which is fixed to the side of the fixed stop block 6 away from the handle 1 by the limit stop block screw 7. The lower end of the limit stop block 8 protrudes from the bottom surface of the handle 1, and both side surfaces of the limit stop block 8 are reference planes, among which the side close to the handle 1 is the reference plane C, and the other side is the reference plane D, which are used to move the handle 1 to draw lines based on the edge of the folding hatch cover mechanism (reference plane A) and the edge of the repaired skin (reference plane B).

[0025] The main body of the ruler pen cover 2 is a ruler with scales, one end of which is set as an annular pen cover. The axis of the annular pen cover is in the vertical direction for inserting a marking pen. A threaded hole is formed on the side of the annular pen cover for screwing in a pen fastening bolt 3 to fix the marking pen. The length of the ruler pen cover 2 extending out of the bar through hole on the handle 1 is adjusted according to the theoretical gap value, and the extended length is determined by reading the scale value on the ruler. The thickness of the fixed block 6 has been subtracted from the scale on the ruler during design, that is, the scale where the ruler is exposed from the handle 1 is the theoretical gap value.

[0026] This embodiment also provides a method for accurately drawing lines for gap repair between a folding mechanism hatch cover and a skin part, which is implemented based on the above-mentioned drawing tool, and the method comprises the following steps:

[0027] The first step is to place the tool: place the drawing tool on the joint edge area between the folding mechanism hatch cover 10 and the skin part 11, the bottom nylon stopper 9 is in contact with the upper surface of the folding mechanism hatch cover 10, and the limit stopper 8 is placed in the joint, and the reference plane C of the limit stopper 8 is in contact with the edge of the folding mechanism hatch cover 10, that is, the reference plane A.

[0028] The second step is to adjust the ruler: rotate and loosen the ruler fastening bolt 4, adjust the length of the ruler fastening bolt 4 extending out of the grip 1, and when the scale value displayed on the ruler pen cover 2 is consistent with the theoretical gap value, tighten the ruler fastening bolt 4 to complete the ruler adjustment operation.

[0029] The third step is to install the marking pen: rotate and loosen the pen fastening bolt 3, put the marking pen into the annular pen cover of the ruler pen cover 2 until the pen tip contacts the upper surface of the skin part 11, tighten the pen fastening bolt 3, and complete the installation of the marking pen. Figure 3 shown.

[0030] The fourth step is to draw the excess trajectory line: hold the upper part of the handle 1, move the drawing tool along the edge of the folding mechanism hatch 10 in the seam area, and use the marking pen to draw a precise excess trajectory line on the skin part 11, that is, determine the excess part to be removed on the skin part 11, complete the precise drawing operation, and carry out subsequent repair work.

[0031] Step 5. Draw the fastener margin line: Install the drawing tool according to steps 1 to 3, move the handle 1 so that the reference plane D of the limit block 8 is aligned with the edge of the repaired skin part 11 (i.e., reference plane B), adjust the position of the ruler pen cap 2 until the ruler scale is equal to the theoretical margin of the fastener plus the thickness of the limit block 8, tighten the ruler fastening bolts 4 to fix the position of the ruler pen cap 2; hold the upper part of the handle 1, move the drawing tool along the edge of the skin part 11, draw the fastener margin line, and arrange the points according to this margin line to meet the design requirements.

[0032] The above-described embodiments merely express the implementation methods of the present invention, but they should not be understood as limiting the scope of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A precise marking tool for gap repair between folding mechanism hatch cover and skin parts, characterized in that: The line drawing tool comprises a handle (1), a ruler pen cover (2), a fixed stopper (6), and a limit stopper (8); The handle (1) is a columnar structure, wherein a horizontally arranged strip through hole is provided in the middle thereof, for the ruler pen cover (2) to pass through and move in the strip through hole; a fixed stopper (6) is fixed below the opening of one side of the strip through hole, and the bottom surface of the fixed stopper (6) is not lower than the bottom surface of the handle (1); when in use, the bottom surface of the handle (1) is attached to the hatch cover of the folding mechanism. The limit stopper (8) is a sheet-like structure, which is fixed to the side of the fixed stopper (6) away from the handle (1), the lower end of the limit stopper (8) protrudes from the bottom surface of the handle (1), and both side surfaces of the limit stopper (8) are reference surfaces, wherein the side close to the handle (1) is the reference surface C, and the other side is the reference surface D, which are respectively used to fit with the edge of the folding hatch cover mechanism and the edge of the repaired skin as a reference for drawing lines; The main body of the ruler pen cover (2) is a ruler with scales, one end of which is arranged as an annular pen cover, the axis of which is in a vertical direction, for inserting a marking pen; the length of the ruler pen cover (2) extending out of the bar-shaped through hole on the grip (1) is adjusted according to the theoretical gap value, and the extended length is determined by reading the scale value on the ruler.

2. According to claim 1, a precise marking tool for gap repair between folding mechanism hatch cover and skin parts, characterized in that: A threaded through hole is provided in the middle of the side of the strip-shaped through hole on the handle (1), which is used for screwing the ruler fastening bolt (4) into the fixed position of the ruler pen cover (2).

3. According to claim 1, a precise marking tool for gap repair between folding mechanism hatch cover and skin parts, characterized in that: A bottom nylon block (9) is fixed to the bottom surface of the handle (1) to avoid scratches.

4. According to claim 1, a precise marking tool for gap repair between folding mechanism hatch cover and skin parts, characterized in that: A threaded hole is formed on the side of the annular pen cover at the end of the ruler pen cover (2) for screwing in a marker pen fastening bolt (3) to fix the marker pen.

5. According to claim 1, a precise marking tool for gap repair between folding mechanism hatch cover and skin parts, characterized in that: The scale marks on the ruler of the ruler pen cover (2) have been designed by subtracting the thickness of the fixed stopper (6), that is, the scale marks where the ruler is exposed from the handle (1) are the theoretical gap values.

6. A precise marking method for gap repair between a folding mechanism hatch cover and a skin part, based on the marking tool described in any one of claims 1 to 5, characterized in that: The method comprises the following steps: In the first step, a line drawing tool is placed on the butt edge area between the folding mechanism hatch cover 10 and the skin part 11, the bottom surface of the handle (1) is fitted with the upper surface of the folding mechanism hatch cover 10, and the limit stopper (8) is placed in the butt seam, and the reference surface C of the limit stopper (8) is fitted with the edge of the folding mechanism hatch cover 10; The second step is to adjust the ruler: rotate and loosen the ruler fastening bolt 4, and adjust the length of the ruler fastening bolt 4 extending from the grip (1) until the scale value displayed on the ruler pen cover (2) is consistent with the theoretical gap value; The third step is to install the marking pen: insert the marking pen into the annular pen cover of the ruler pen cover (2) until the tip of the marking pen contacts the upper surface of the skin part 11; Step 4: Draw the margin track line: Hold the upper part of the handle (1), move the line drawing tool along the edge of the folding mechanism hatch cover 10 in the seam area, and use the marking pen to draw the margin track line on the skin part 11 for subsequent repair work; Step 5: Draw the fastener margin line: Install the marking tool according to the first to third steps, move the handle (1) so that the reference surface D of the limit stop (8) is aligned with the edge of the repaired skin part 11, and adjust the position of the ruler pen cover (2) until the ruler scale is equal to the theoretical margin of the fastener plus the thickness of the limit stop (8); hold the upper part of the handle (1), move the marking tool along the edge of the skin part 11, and draw the fastener margin line.

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