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CN-117484355-B - Device for controlling step difference chamfering of aircraft external accessory and use method

CN117484355BCN 117484355 BCN117484355 BCN 117484355BCN-117484355-B

Abstract

The invention relates to the technical field of aircraft assembly, in particular to a device for controlling step difference chamfering of an aircraft exterior part and a use method thereof. The utility model provides a device of control aircraft outer accessory step chamfer, contains first ring cover, the shell, a pedestal, first ring cover is used for the cover to establish the sander, the base top surface has the rack that inclines and are parallel to each other and the sliding surface of slope, the bottom surface sliding connection of shell is in the sliding surface, the shell has the through-hole, first ring cover rotates to be connected in the through-hole, the outer wall of first ring cover has the gear, the gear corresponds with the rack, first ring cover can rotate and drive the shell and slide along the sliding surface and make the sander be close to the aircraft outer accessory of polishing, still be equipped with scale and brake piece on the shell, the scale is used for the rotation angle of sign first ring cover for the shell, the brake piece is used for restricting the sliding distance of shell and base. By using the device, the chamfer is formed, and the chamfer width is ensured to be within a specified range, so that the high-precision and high-efficiency requirements of aircraft assembly are ensured.

Inventors

  • DING DONGDONG
  • Xiang Guikun
  • GUO WEI
  • DONG KAI
  • HUANG CHENDONG
  • WANG WEI
  • TIAN CHANGLE
  • YUAN HAOTIAN
  • YI CHENG
  • FAN XIAOBO
  • MENG LELE
  • LIU QIAO

Assignees

  • 成都飞机工业（集团）有限责任公司

Dates

Publication Date
20260512
Application Date
20231110

Claims (10)

  1. 1. The utility model provides a device for controlling aircraft exterior parts step chamfer, characterized by contains first ring cover (1), shell (3), base (5) and brake (13), first ring cover (1) are used for the cover to locate the neck of sander (54), base (5) top surface has inclined rack (51) and inclined sliding surface (52), sliding surface (52) with rack (51) are parallel to each other, the bottom surface sliding connection of shell (3) in sliding surface (52), shell (3) have the through-hole, first ring cover (1) rotate connect in the through-hole, the outer wall of first ring cover (1) has gear (11), gear (11) with rack (51) can mesh, first ring cover (1) can rotate and drive shell (3) along sliding surface (52) slide and then drive sander (54) keep away from or aircraft exterior parts (53), shell (3) are along sliding surface (52) first ring cover (1) rotate and are used for the scale mark (13) is still equipped with in the rotation of first ring cover (1) in the scale mark (13), the braking member (13) is used for limiting the sliding distance between the housing (3) and the base (5) or the rotation angle of the first ring sleeve (1).
  2. 2. A device for controlling the step-difference chamfering of an aircraft attachment according to claim 1, characterized in that the housing (3) has a strip-shaped hole (32), the extension direction of the strip-shaped hole (32) being parallel to the movement direction of the first collar (1), the graduation comprising a positioning hole (31), a number of the positioning holes (31) being arranged along the strip-shaped hole (32).
  3. 3. A device for controlling the step-difference chamfer of an aircraft attachment according to claim 2, characterized in that said housing (3) further comprises locking means (2), said locking means (2) being adapted to fix said first collar (1).
  4. 4. A device for controlling the step-difference chamfer of an aircraft attachment according to claim 3, characterized in that said housing (3) is provided with a hinge (33), said hinge (33) being adapted to adjust the opening and closing of said locking means (2).
  5. 5. The device for controlling the step difference chamfering of the aircraft exterior parts according to claim 2, further comprising a second annular sleeve (4), wherein a guide rod (12) is arranged on the first annular sleeve (1), the guide rod (12) is positioned in the strip-shaped hole (32), a limiting piece (41) corresponding to the positioning hole (31) is arranged on the second annular sleeve (4), threads are arranged inside the second annular sleeve (4), and threads corresponding to the threads inside the second annular sleeve (4) are arranged outside the guide rod (12).
  6. 6. A device for controlling the step-difference chamfer of an aircraft attachment according to claim 5, characterized in that the location of the positioning hole (31) of the housing (3) is an arc, the centre of which is the same as the centre of the first collar (1).
  7. 7. A device for controlling the step-difference chamfer of an aircraft attachment according to claim 6, characterized in that it further comprises hydraulic means ensuring that said stop (41) is located in said positioning hole (31).
  8. 8. A device for controlling the step-difference chamfer of an aircraft attachment according to claim 1, characterized in that said base (5) has a projection on top for mounting said rack (51).
  9. 9. A device for controlling the step-difference chamfer of an aircraft exterior according to claim 1, characterized in that the braking element (13) is a stop block and is located on top of the rack (51).
  10. 10. A method for processing a step chamfer of an aircraft exterior accessory, using a device for controlling a step chamfer of an aircraft exterior accessory according to any one of claims 5-7, comprising the steps of: s1, measuring the step difference of an aircraft external accessory (53); S2, fixing the guide rod (12) to a corresponding position, namely, rotating the guide rod (12) to a corresponding position, adjusting the second ring sleeve (4) to a corresponding height and fixing the second ring sleeve, and placing the limiting piece (41) in the positioning hole (31); S3, machining the step chamfer of the aircraft outer accessory (53), namely installing a first annular sleeve (1) of the step chamfer device on the neck of the sander (54), installing the step chamfer device for controlling the aircraft outer accessory (53), placing the part of the aircraft outer accessory (53) to be sanded on corresponding scales, releasing the first annular sleeve (1), and braking a braking part (13), namely finishing machining of the step chamfer of the aircraft outer accessory (53).

Description

Device for controlling step difference chamfering of aircraft external accessory and use method Technical Field The invention relates to the technical field of aircraft assembly, in particular to a device for controlling step difference chamfering of an aircraft exterior part and a use method thereof. Background The aircraft exterior accessory is generally referred to as an aircraft skin or flap. In the assembly process of the aircraft, no step difference or low step difference between the outer accessories of the aircraft is required to be ensured, namely, the height difference caused by the assembly error and the accumulation of manufacturing errors between the outer accessories of the aircraft is avoided, and the aerodynamic performance and stealth performance of the aircraft are influenced. However, in the actual assembly process, the assembly step of the external accessory is unavoidable due to assembly errors, tool errors, worker operations, and the like. The above therefore requires polishing the external accessory step. The existing method is that the outer accessory is installed on an airplane, the step difference of the outer accessory is measured, and then a worker holds a sander to polish according to the corresponding chamfering width. The chamfer width is required to be converted according to the corresponding conversion proportion according to the step height, and the conversion proportion corresponding to different airplanes is different, and the chamfer width is equal to the step height multiplied by the corresponding coefficient. Moreover, the manual hand sander is difficult to control the chamfer width within a specified range. Disclosure of Invention The invention aims to solve the problem that the manual hand-held sander in the prior art is difficult to control the chamfering width within a specified range, and provides a device for controlling the step difference chamfering of an aircraft external accessory and a use method thereof. In order to achieve the above object, the present invention provides the following technical solutions: The utility model provides a device of control aircraft exterior spare step chamfer, including first ring cover, a housing, base and brake piece, first ring cover is used for the cover to locate the neck of sander, the base top surface has the smooth face of slope rack and slope, smooth face and rack are parallel to each other, the bottom surface sliding connection of shell is in the smooth face, the shell has the through-hole, first ring cover rotates to be connected in the through-hole, the outer wall of first ring cover has the gear, the gear can mesh with the rack, first ring cover can rotate and drive the shell and slide along the smooth face and then drive sander and keep away from or be close to aircraft exterior spare, the shell slides along the smooth face and can drive first ring cover and rotate and make sander be close to the aircraft exterior spare of polishing, still be equipped with scale and brake piece on the shell, the scale is used for the rotation angle of sign first ring cover for the shell, brake piece is used for limiting the sliding distance of shell and base or the rotation angle of first ring cover. The first ring sleeve is in a ring shape and is sleeved on the neck of the sander. Before polishing the step of the external accessory of the airplane, the first ring sleeve is arranged at a proper position on the rack, and the gear on the first ring sleeve is meshed with the rack. After the first annular sleeve is sleeved on the top of the sander and the device is installed, the first annular sleeve moves along the direction of the rack towards the aircraft outer accessory along with the action of gravity acceleration, and the sander is driven to move by the first annular sleeve, so that the aircraft outer accessory is sanded by the sander until the braking piece contacts and brakes the first annular sleeve, and then the aircraft outer accessory step difference chamfer is machined. Through the gear arranged on the first loop and the rack arranged on the base, the first loop can move along the rack in the rotating process of the first loop. The through holes in the housing allow the sander to pass through the device. And the gear and rack device is meshed, so that slipping of the sander and the assembly step to be machined can be avoided, the tool setting point of the sander and the point to be machined of the aircraft external accessory in the extrusion process are guaranteed to be at the same height, displacement of the gear on the rack is guaranteed to be corresponding to the chamfer of the assembly step as much as possible, and accuracy and high efficiency of step chamfer machining are guaranteed. The sliding surface setting angle can enable the first loop to move towards the lower side of the sliding surface along with the acceleration of gravity, so that labor is saved as much as possible. The scale is used for indicating the ro