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CN-117245012-B - Automatic boss punching die and method for producing shell for aerospace

CN117245012BCN 117245012 BCN117245012 BCN 117245012BCN-117245012-B

Abstract

The invention discloses an automatic boss punching die and method for producing a shell for spaceflight, wherein the die comprises a bracket, a die assembly and a limiting assembly, wherein the die assembly and the limiting assembly are arranged in the bracket, the die assembly comprises a female die arranged at the inner bottom of the bracket, a pushing plate clamped in the bracket and positioned at the upper end of the female die, and a male die arranged at the lower bottom surface of the pushing plate, an extrusion column is arranged on the pushing plate, the limiting assembly comprises a movable frame clamped in the bracket and positioned between the female die and the male die, limiting clamping plates clamped on two sides in the movable frame in a sliding manner, and a miniature motor arranged on the upper end surface of the movable frame and used for providing power for the limiting clamping plates.

Inventors

  • QIN HAO
  • XU YIFENG

Assignees

  • 江苏优格曼航空科技有限公司

Dates

Publication Date
20260505
Application Date
20231026

Claims (7)

  1. 1. An automatic boss punching die for producing a shell for spaceflight is characterized by comprising a bracket (1), a die assembly (2) and a limiting assembly (3), wherein the die assembly (2) and the limiting assembly (3) are movably arranged in the bracket (1); The die assembly (2) comprises a female die (20) arranged at the inner bottom of the support (1), a pushing plate (21) which is in sliding clamping connection with the inner part of the support (1) and is positioned at the upper end of the female die (20) and a male die (22) arranged on the lower bottom surface of the pushing plate (21), a forming cavity (200) which is suitable for the male die (22) is arranged on the upper end surface of the female die (20), the pushing plate (21) is in sliding clamping connection with the support (1) through a first sliding sleeve (210), a reset spring (211) which is in abutting connection with the first sliding sleeve (210) is sleeved on the support (1), and an extrusion column (23) which penetrates through the support (1) and is in sliding clamping connection with the support (1) is arranged on the upper end surface of the pushing plate (21); The limiting assembly (3) comprises a moving frame (30) which is slidably clamped inside the bracket (1) and is positioned between the female die (20) and the male die (22), limiting clamping plates (31) which are slidably clamped at two sides inside the moving frame (30), and a miniature motor (32) which is arranged on the upper end face of the moving frame (30) and is used for providing power for the limiting clamping plates (31), wherein the moving frame (30) is slidably clamped with the bracket (1) through a second sliding sleeve (300), a compression spring (301) which is abutted with the second sliding sleeve (300) is sleeved on the bracket (1), threaded seats (310) are arranged at the end parts of the two limiting clamping plates (31), the internal threads of the threaded seats (310) on the two limiting clamping plates (31) are opposite in rotation direction, and a driving screw rod (320) which is in threaded connection with the threaded seats (310) on the same side as the two limiting clamping plates (31) is arranged on an output shaft of the miniature motor (32); The forming device comprises a forming cavity (200), a female die (20), guide assemblies (4) arranged on the female die and positioned on two sides of the forming cavity (200), a sinking groove (201) for accommodating the guide assemblies (4) is formed in the upper end face of the female die (20), the guide assemblies (4) comprise mounting frames (40) rotatably clamped in the sinking groove (201), a plurality of guide rollers (41) distributed at the top ends of the mounting frames (40) at equal intervals and first electric push rods (42) arranged in the sinking groove (201) and used for providing power for the mounting frames (40), connecting gears (400) are arranged at the connecting positions of the mounting frames (40) and the sinking groove (201), and toothed plates (43) meshed with the connecting gears (400) and connected with the first electric push rods (42) are slidably clamped at the inner bottoms of the sinking groove (201); The die comprises a die body (20), wherein a cutting groove (202) is formed in the upper end face of the die body, an annular cutting knife (5) corresponding to the upper and lower positions of the cutting groove (202) is slidably clamped on the lower bottom face of the pushing plate (21) through a plug rod (50), a pressing plate (51) connected with the plug rod (50) and sleeved outside a pressing column (23) through a pressing sleeve (510) is arranged on the upper end face of the pushing plate (21), an arc groove (5100) is formed in the pressing sleeve (510), a driving sleeve (52) is rotatably clamped on the pressing column (23) and located above the pressing sleeve (510), an arc-shaped protrusion (520) capable of being clamped with the arc groove (5100) is arranged on the driving sleeve (52), and a second electric push rod (53) movably connected with the driving sleeve (52) is movably hinged to the upper end face of the pushing plate (21).
  2. 2. An automatic boss punching die for producing a casing for aerospace according to claim 1, wherein the outer part of each guide roller (41) is sleeved with a rubber ring.
  3. 3. The automatic boss punching die for producing the shell for the aerospace according to claim 1, wherein the inserting rod (50) is sleeved with a recovery spring (500) which is respectively abutted with the pressing plate (51) and the pushing plate (21).
  4. 4. The automatic boss punching die for producing a shell for aerospace according to claim 1, wherein the arc-shaped protrusion (520) is rotationally clamped with a ball (5200).
  5. 5. The automatic boss punching die for producing the shell for the aerospace according to claim 1, wherein a replacement die (24) is movably clamped in the female die (20), the forming cavity (200) is arranged on the replacement die (24), and the male die (22) is movably clamped with the pushing plate (21).
  6. 6. An automatic boss punching die for aerospace chassis production according to claim 1, wherein the inner wall of the forming cavity (200) and the outer surface of the male die (22) are polished.
  7. 7. A method for producing a casing for aerospace by using the automatic boss punching die as claimed in any one of claims 1 to 6, comprising the steps of: s1, connecting a micro motor (32) with an external power supply; S2, placing the shell plate on a movable frame (30), starting a micro motor (32), and driving a driving screw (320) to rotate by utilizing the micro motor (32), so that the two limiting clamping plates (31) are mutually close to each other and then limit and fix the shell plate; S3, fixing the support (1) on a press, enabling the extrusion column (23) to be abutted to the output end of the press, starting the press, enabling the pushing plate (21) to slide inside the support (1) through the extrusion column (23), enabling the shell plate to be extruded and molded through the molding cavity (200) on the male die (22) and the female die (20), enabling the movable frame (30) to move along with the pushing plate (21) when the pushing plate (21) moves inside the support (1), and enabling the two limiting clamping plates (31) to be continuously close in the extrusion process of the shell plate.

Description

Automatic boss punching die and method for producing shell for aerospace Technical Field The invention relates to the technical field of aerospace, in particular to an automatic boss punching die and method for producing an aerospace shell. Background At present, the aircraft is manufactured in a segmented mode and then integrally spliced, so that the outer skin is required to be manufactured in a segmented mode along the longitudinal direction of the aircraft, the outer skin is difficult to be completely attached to an aircraft frame if single-piece bending forming is adopted in the circumferential direction, meanwhile, if the bending degree of the single-piece skin is too large, residual stress in the processing deformation process is too large, stress corrosion and fatigue strength reduction are easy to cause, the bending degree of the single-piece skin is generally not more than 120 degrees, the single-piece skin of a modern civil aircraft is generally not more than 10 meters along the longitudinal direction and not more than 100 degrees along the circumferential direction, and the stamping processing is a main means for producing the aircraft shell at present, so that the method has a better stamping forming effect, low power consumption and simple operation. However, the existing processing mould for the aircraft chassis generally does not have the function of fixing materials, and because the aircraft chassis is large in size, swing is very easy to generate in the material stamping process, the processing precision of the chassis is affected, and the existing processing mould is mostly of fixed size and is difficult to be suitable for processing chassis with different sizes and shapes. Disclosure of Invention Aiming at the technical problems, the invention provides an automatic boss punching die and method for producing a shell for spaceflight. The technical scheme of the invention is that the automatic boss punching die for producing the shell for spaceflight comprises a bracket, a die assembly and a limiting assembly, wherein the die assembly and the limiting assembly are movably arranged in the bracket; The die assembly comprises a female die arranged at the inner bottom of the bracket, a pushing plate which is in sliding clamping connection with the inner part of the bracket and is positioned at the upper end of the female die, and a male die arranged at the lower bottom surface of the pushing plate, wherein the upper end surface of the female die is provided with a forming cavity which is matched with the male die; The limiting assembly comprises a movable frame, limiting clamping plates and a miniature motor, wherein the movable frame is in sliding clamping connection with the inside of the support and is positioned between the female die and the male die, the limiting clamping plates are in sliding clamping connection with the two sides of the inside of the movable frame, the miniature motor is arranged on the upper end face of the movable frame and provides power for the limiting clamping plates, the movable frame is in sliding clamping connection with the support through a second sliding sleeve, compression springs which are in butt joint with the second sliding sleeve are sleeved on the support, threaded seats are arranged at the end parts of the two limiting clamping plates, the internal threads of the threaded seats on the two limiting clamping plates are opposite in rotation direction, and a driving screw rod in threaded connection with the threaded seats on the same side of the two limiting clamping plates is arranged on an output shaft of the miniature motor. The die comprises a die body, a forming cavity, a guide assembly, a sinking groove, a toothed plate, a plurality of guide rollers, a first electric push rod, a connecting gear and a connecting plate, wherein the die body is arranged on the die body and is positioned on two sides of the forming cavity; When the male die is gradually close to the female die, the toothed plate is pushed to move in the sinking groove by the first electric push rod, and the connecting gear is meshed with the toothed plate, so that the mounting frame is gradually rotated and stored in the sinking groove in the rotating process of the connecting gear. Further, rubber rings are sleeved outside the guide rollers; The guide roller is provided with the rubber ring, so that the surface of the shell plate is protected. The upper end face of the pushing plate is provided with a pressing plate which is connected with the plug rod and sleeved outside the extrusion column through an extrusion sleeve, the extrusion column is provided with an arc-shaped groove, a driving sleeve is rotatably clamped above the extrusion sleeve, an arc-shaped protrusion which can be clamped with the arc-shaped groove is arranged on the driving sleeve, and the upper end face of the pushing plate is movably hinged with a second electric push rod which is movably connected with the drivin