Electric depth-keeping cutting knife commonly used for surface film pasting of multiple series of airplanes

Abstract

An electric depth-keeping cutting knife commonly used for film pasting on the surfaces of multiple series of airplanes relates to the technical field of aircraft maintenance, a sliding seat driving mechanism I drives a knife holder to move in the left-right direction, a sliding seat driving mechanism II drives the knife holder to move in the front-back direction, and finally a blade coincides with the outer edge of a to-be-cut anti-wind-erosion film. The extending length of the cutting edge of the blade relative to the bottom of the tool apron is adjusted through the cutting depth adjusting mechanism, so that the cutting depth is determined, and then the tool apron is driven to slide left and right along the sliding rail to cut the wind erosion prevention film. The depth-keeping cutting knife can be generally used for composite material wind erosion prevention films of Boeing 737 whole series, airbus 320 whole series, C919 series, ERJ, ARJ and the like, the working efficiency and the working safety are improved, and the depth-keeping cutting knife is convenient to manufacture and use.

Description

Technical Field

[0001] This invention relates to the field of aircraft maintenance technology, and specifically to an electric constant depth cutting tool applicable to surface film application on multiple aircraft series. Background Technology

[0002] In aircraft maintenance, to prevent wind erosion of composite material surfaces, maintenance personnel almost always replace or reapply the anti-erosion protective film on composite material surfaces such as radomes, fuselage antennas, and vertical tail leading edges during every scheduled maintenance. Furthermore, the thickness of the anti-erosion protective film varies between different aircraft models and even between different areas of the same aircraft model. In most cases, without a dedicated template, the area covered by the film will be larger than the area to be covered, requiring the excess film to be cut. Traditional tools (such as utility knives and ordinary cutting machines) have the following drawbacks: 1. Uncontrollable cutting depth: Manual operation can easily cut into underlying components, damaging the aircraft structure and affecting safety; 2. Low efficiency: Requires repeated tool adjustments, resulting in long maintenance cycles; 3. Poor safety: Exposed blades can easily cut operators, and flying composite material debris poses a health risk. Summary of the Invention

[0003] In order to overcome the shortcomings of the above technologies, this invention provides a cutting blade that can be used for applying a film to the windward surface of composite materials of all Boeing 737 series, all Airbus 320 series, C919 series, ERJ, ARJ and other aircraft, thereby improving cutting accuracy and reducing material damage.

[0004] The technical solution adopted by this invention to overcome its technical problems is: An electric depth-controlled cutting tool applicable to surface film application on multiple aircraft series includes: The base has guide rail I installed horizontally in the left-right direction inside it; Slide I is slidably mounted on guide rail I, and a horizontal groove is provided on the upper end of slide I along the front-to-back direction; Slide drive mechanism I is used to drive slide I to move left and right along guide rail I; The slide block II has a guide rail II horizontally arranged at its lower end along the front-back direction. The guide rail II is slidably installed in the slide groove. The front end of the slide block II has a slide rail horizontally arranged along the left-right direction. Slide drive mechanism II is used to drive slide II to move back and forth along guide rail II; The tool holder has a groove on its rear side that matches the slide rail. The tool holder is slidably mounted on the slide rail via the groove, and a cutting blade is mounted on the tool holder; and The cutting depth adjustment mechanism, located in the tool holder, is used to adjust the height of the blade's edge extending relative to the bottom of the tool holder.

[0005] Furthermore, the aforementioned slide drive mechanism I includes a lead screw I rotatably mounted in the base, the axis of the lead screw I being horizontally arranged in the left-right direction, and the lead screw I being threadedly connected to the slide I.

[0006] To improve ease of operation, a handwheel I is also included, which is installed at the head end of lead screw I.

[0007] Furthermore, the aforementioned slide drive mechanism II includes a lead screw II rotatably mounted in the slide II, the axis of the lead screw II being horizontally arranged in the front-back direction, and the lead screw II being threadedly connected to the slide II.

[0008] To improve ease of operation, a handwheel II is also included, which is installed at the head end of the lead screw II.

[0009] To reduce cutting resistance, the blade is tilted at the front end of the blade holder with the right end higher and the left end lower. Its upper end is rotatably connected to the blade holder by a pin, and its lower end is fixed to the blade holder by a screw.

[0010] Furthermore, the aforementioned cutting depth adjustment mechanism includes a spring plate disposed at the bottom of the tool holder, a worm gear reducer installed in the tool holder, and a screw I screwed into the tool holder. The right end of the spring plate is fixed to the bottom of the tool holder, and a C-shaped opening groove is formed between the spring plate and the bottom of the tool holder. The axis of the screw I is arranged vertically, and the lower end of the screw I contacts the upper end face of the left side of the spring plate. The upper end of the screw I is provided with a keyway along the axial direction. The screw I is coaxially keyed to the output shaft of the worm gear reducer through the keyway. The input shaft of the worm gear reducer is connected to the motor drive. When the spring plate is in its natural state, it is horizontally arranged in the left-right direction.

[0011] To reduce resistance, a roller mounted on the tool holder is also included, the axis of which is horizontally arranged in the front-to-back direction.

[0012] To facilitate off-position cutting, clamps are also provided on the left and right sides of the base. Pin holes are provided at both ends of the base. A positioning pin matching the pin hole is horizontally provided on the inner end of the clamp. The clamp is inserted into the corresponding pin hole on the same side through the positioning pin. Screw II is screwed into the clamp. The axis of screw II is set in the vertical direction. A pressure plate is provided at the head end of screw II. When the pressure plate is at the uppermost position, it presses the anti-corrosion film onto the clamp.

[0013] To improve ease of operation, a handle rod is also included, which is horizontally inserted into the bottom of the screw.

[0014] The beneficial effects of this invention are as follows: The slide drive mechanism I drives the cutter holder to move left and right, and the slide drive mechanism II drives the cutter holder to move forward and backward, ultimately aligning the blade with the outer edge of the anti-erosion film to be cut. The cutting depth is determined by adjusting the length of the blade's edge extending relative to the bottom of the cutter holder through the cutting depth adjustment mechanism. Then, the cutter holder is driven to slide left and right along the slide rail to cut the anti-erosion film. This invention is applicable to the fixed-depth cutting of anti-erosion films on composite materials for aircraft such as the Boeing 737 series, Airbus A320 series, C919 series, ERJ, and ARJ. It solves the problem of using only utility knives or complex and cumbersome cutting tools during the maintenance of various aircraft, which can cause scratches to aircraft parts and personnel, or waste costs. It improves work efficiency and safety, and is easy to manufacture and use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the tool holder portion of the present invention; Figure 4 This is a three-dimensional structural diagram of the motor component of the present invention; Figure 5 This is a three-dimensional structural diagram of the clamping part of the present invention; Figure 6 This is a diagram showing the usage state of the present invention; In the diagram, 1. Base; 2. Slide I; 3. Lead screw I; 4. Handwheel I; 5. Slide II; 6. Lead screw II; 7. Slide rail; 8. Tool holder; 9. Clamp; 10. Spring; 11. Blade; 12. Pin; 13. Screw; 14. Worm gear reducer; 15. Handwheel II; 16. Slide groove; 17. Roller; 18. Open slot; 19. Motor; 20. Screw I; 21. Positioning pin; 22. Handle lever; 23. Pressure plate; 24. Guide rail I; 25. Anti-corrosion film; 26. Guide rail II; 27. Screw II. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 To be continued Figure 6 The present invention will be further described below.

[0017] An electric constant-depth cutting blade applicable to surface coating of multiple aircraft series includes: a base 1, in which a guide rail I 24 is horizontally mounted in the left-right direction; a slide I 2, slidably mounted on the guide rail I 24, with a groove horizontally provided on the upper end of the slide I 2 in the front-back direction; a slide drive mechanism I for driving the slide I 2 to move left and right along the guide rail I 24; a slide II 5, in which a guide rail II 26 is horizontally provided on the lower end in the front-back direction, the guide rail II 26 is slidably mounted in the groove, and a slide rail 7 is horizontally provided on the front end of the slide II 5 in the left-right direction; a slide drive mechanism II for driving the slide II 5 to move back and forth along the guide rail II 26; a blade holder 8, in which a groove 16 matching the slide rail 7 is provided on the rear side, the blade holder 8 is slidably mounted on the slide rail 7 through the groove 16, and a blade 11 is mounted on the blade holder 8; and a cutting depth adjustment mechanism, disposed in the blade holder 8, for adjusting the extension height of the blade 11 relative to the bottom of the blade holder 8. When cutting the anti-corrosion film 25, the base 1 is placed on the anti-corrosion film 25. The slide drive mechanism I drives the cutter holder 8 to move in the left-right direction, and the slide drive mechanism II drives the cutter holder 8 to move in the front-back direction, so that the blade 11 coincides with the outer edge of the anti-corrosion film 25 to be cut. The cutting depth is determined by adjusting the length of the blade 11 protruding from the bottom of the cutter holder 8 through the cutting depth adjustment mechanism. Then, the cutter holder 8 is driven to slide left and right along the slide rail 7 to cut the anti-corrosion film 25. This tool is applicable to the fixed-depth cutting of anti-corrosion films of composite materials for Boeing 737 series, Airbus 320 series, C919 series, ERJ, ARJ and other aircraft. It solves the problem of scratching aircraft parts and personnel or wasting costs by using only utility knives or complicated and cumbersome cutting tools during the maintenance of various aircraft, improving work efficiency and safety, and is easy to manufacture and use.

[0018] In one embodiment of the present invention, the slide drive mechanism I includes a lead screw I 3 rotatably mounted in the base 1. The axis of the lead screw I 3 is horizontally arranged in the left-right direction, and the lead screw I 3 is threadedly connected to the slide I 2. Rotation of the lead screw I 3 causes the slide I 2 to slide left and right along the guide rail I 24. Preferably, in this embodiment, a handwheel I 4 is also included, mounted on the head end of the lead screw I 3. The handwheel I 4 facilitates the rotation of the lead screw I 3, thereby further improving the convenience of operation.

[0019] In one embodiment of the present invention, the slide drive mechanism II includes a lead screw II 6 rotatably mounted in the slide II 5. The axis of the lead screw II 6 is horizontally arranged in the front-to-back direction, and the lead screw II 6 is threadedly connected to the slide II 5. Rotation of the lead screw II 6 causes the slide II 5 to slide back and forth relative to the slide I 2. Preferably, in this embodiment, a handwheel II 15 is also included, mounted on the head end of the lead screw II 6. The handwheel II 15 facilitates the rotation of the lead screw II 6, thereby further improving the convenience of operation.

[0020] In one embodiment of the present invention, the blade 11 is inclinedly disposed at the front end of the blade holder 8 with its right end higher and its left end lower. Its upper end is rotatably connected to the blade holder 8 via a pin 12, and its lower end is fixed to the blade holder 8 via a screw 13. The blade 11 is inclined, with only the blade tip exposed relative to the blade holder 8 on its left side end. Thus, when cutting the anti-corrosion film 25, only the blade tip is used for cutting, which effectively reduces cutting resistance and further improves cutting efficiency.

[0021] In one embodiment of the present invention, the cutting depth adjustment mechanism includes a spring plate 10 disposed at the bottom of the tool holder 8, a worm gear reducer 14 installed in the tool holder 8, and a screw I 20 screwed into the tool holder 8. The right end of the spring plate 10 is fixed to the bottom of the tool holder 8, and a C-shaped opening groove 18 is formed between the spring plate 10 and the bottom of the tool holder 8. The axis of the screw I 20 is arranged in the vertical direction, and the lower end of the screw I 20 contacts the upper end face of the left side of the spring plate 10. The upper end of the screw I 20 is provided with a keyway along the axial direction. The screw I 20 is coaxially keyed to the output shaft of the worm gear reducer 14 through the keyway. The input shaft of the worm gear reducer 14 is connected to the motor 19 for transmission. When the spring plate 10 is in its natural state, it is horizontally arranged in the left-right direction. The motor's rotation, through the worm gear reducer 14, amplifies the torque and drives the screw I 20 to rotate. Since the screw I 20 is keyed to the output shaft of the worm gear reducer 14 and screwed into the tool holder 8, it moves axially up and down as it rotates. When the screw I 20 moves downwards, it pushes the spring 10 downwards, causing it to bend, thus increasing the spacing of the slots 18 and reducing the exposed length of the blade tip relative to the spring 10, thereby decreasing the cutting depth. When the screw I 20 moves downwards, the spring 10 springs back upwards, increasing the exposed length of the blade tip relative to the spring 10, thus increasing the cutting depth. This operation is convenient and simple. Because the worm gear drive has a self-locking characteristic, the screw I 20 will not rotate after the motor stops, ensuring that the position of the spring 10 remains unchanged after adjustment, accurately determining the cutting depth of the anti-corrosion film 25.

[0022] In one embodiment of the present invention, a roller 17 rotatably mounted on the tool holder 8 is further included, the axis of the roller 17 being horizontally arranged in the front-to-back direction. By providing the roller 17, the tool holder 8 can roll on the surface of the anti-corrosion film 25 when moving left and right, thereby reducing friction.

[0023] In one embodiment of the present invention, a clamping seat 9 is further provided on the left and right sides of the base 1 respectively. The left and right ends of the base 1 are respectively provided with pin holes. The inner end of the clamping seat 9 is provided with a positioning pin 21 that matches the pin hole. The clamping seat 9 is inserted into the corresponding pin hole on the same side through the positioning pin 21. The screw II 27 is screwed into the clamping seat 9. The axis of the screw II 27 is arranged in the vertical direction. The head end of the screw II 27 is provided with a pressure plate 23. When the pressure plate 23 is at the uppermost end, it presses the wind erosion protection film 25 onto the clamping seat 9. The clamping base 9 is inserted into the left and right ends of the base 1 via positioning pins 21. Therefore, the position of the clamping base 9 can be adjusted by sliding the positioning pins 21 in the pin holes. When the anti-erosion film 25 is cut off, the two ends of the anti-erosion film 25 are placed in the corresponding clamping base 9 on the same side. By rotating the screw II 27, the pressure plate 23 is moved upward to clamp and fix the anti-erosion film 25 on the same side. Then, the blade 11 can be used to cut the off-position anti-erosion film 25 by sliding the blade holder 8, thus increasing the application scenarios. In this embodiment, preferably, a handle 22 is also included, which is horizontally inserted into the bottom of the screw 20. The handle 22 allows for convenient adjustment of the screw II 27, further improving the convenience of operation.

[0024] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A universal electric depth-controlled cutting tool for surface film application on multiple aircraft series, characterized in that, include: The base (1) has a guide rail I (24) installed horizontally in the left and right direction inside it; Slide I (2) is slidably mounted on guide rail I (24). A sliding groove is provided horizontally at the upper end of slide I (2) along the front-back direction. Slide drive mechanism I is used to drive slide I (2) to move left and right along guide rail I (24); The slide block II (5) has a guide rail II (26) horizontally arranged at its lower end along the front-back direction. The guide rail II (26) is slidably installed in the slide groove. The front end of the slide block II (5) has a slide rail (7) horizontally arranged along the left-right direction. Slide drive mechanism II is used to drive slide II (5) to move back and forth along guide rail II (26); The tool holder (8) has a groove (16) on its rear side that matches the slide rail (7). The tool holder (8) is slidably mounted on the slide rail (7) via the groove (16). A cutting blade (11) is mounted on the tool holder (8). A cutting depth adjustment mechanism is provided in the tool holder (8) to adjust the extension height of the cutting edge of the blade (11) relative to the bottom of the tool holder (8).

2. The electric depth-controlled cutting tool for surface film application on multiple aircraft as described in claim 1, characterized in that: The slide drive mechanism I includes a lead screw I (3) rotatably mounted in the base (1). The axis of the lead screw I (3) is horizontally arranged in the left-right direction, and the lead screw I (3) is threadedly connected to the slide I (2).

3. The electric depth-controlled cutting tool for surface coating of multiple aircraft as described in claim 2, characterized in that: It also includes the handwheel I (4) installed at the head end of the lead screw I (3).

4. The electric depth-controlled cutting tool for surface film application on multiple aircraft as described in claim 1, characterized in that: The slide drive mechanism II includes a lead screw II (6) rotatably mounted in the slide II (5). The axis of the lead screw II (6) is horizontally arranged in the front-back direction, and the lead screw II (6) is threadedly connected to the slide II (5).

5. The electric constant depth cutting tool for surface film application on multiple aircraft as described in claim 4, characterized in that: It also includes handwheel II (15) installed at the head end of lead screw II (6).

6. The electric depth-controlled cutting tool for surface coating of multiple aircraft as described in claim 1, characterized in that: The blade (11) is inclined at the front end of the blade holder (8) with the right end higher and the left end lower. Its upper end is rotatably connected to the blade holder (8) through a pin (12), and its lower end is fixed to the blade holder (8) by a screw (13).

7. The electric depth-controlled cutting tool for surface coating of multiple aircraft as described in claim 6, characterized in that: The cutting depth adjustment mechanism includes a spring plate (10) set at the bottom of the cutter holder (8), a worm gear reducer (14) installed in the cutter holder (8), and a screw I (20) screwed into the cutter holder (8). The right end of the spring plate (10) is fixed to the bottom of the cutter holder (8), and a C-shaped opening groove (18) is formed between the spring plate (10) and the bottom of the cutter holder (8). The axis of the screw I (20) is set in the vertical direction. The lower end of the screw I (20) is in contact with the upper end face of the left side of the spring plate (10). The upper end of the screw I (20) is provided with a keyway along the axial direction. The screw I (20) is coaxially keyed to the output shaft of the worm gear reducer (14) through the keyway. The input shaft of the worm gear reducer (14) is connected to the motor (19) for transmission. When the spring plate (10) is in its natural state, it is set horizontally in the left and right directions.

8. The electric depth-controlled cutting tool for surface coating of multiple aircraft as described in claim 1, characterized in that: It also includes a roller (17) rotatably mounted on the tool holder (8), the axis of which is set horizontally in the front-back direction.

9. The electric depth-controlled cutting tool for surface coating of multiple aircraft as described in claim 1, characterized in that: It also includes clamps (9) respectively set on the left and right sides of the base (1). The left and right ends of the base (1) are respectively provided with pin holes. The inner end of the clamp (9) is horizontally provided with a positioning pin (21) that matches the pin hole. The clamp (9) is inserted into the corresponding pin hole on the same side through the positioning pin (21). The screw II (27) is screwed into the clamp (9). The axis of the screw II (27) is set in the vertical direction. The head end of the screw II (27) is provided with a pressure plate (23). When the pressure plate (23) is at the uppermost position, it presses the wind erosion film (25) onto the clamp (9).

10. The electric constant depth cutting tool for surface film application on multiple aircraft as described in claim 1, characterized in that: It also includes a handle (22) that is horizontally inserted into the bottom of the screw (20).

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