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CN-117583675-B - Rolling device for processing thin shaft threads with large length-diameter ratio

CN117583675BCN 117583675 BCN117583675 BCN 117583675BCN-117583675-B

Abstract

The application discloses a rolling device for processing thin shaft threads with large length-diameter ratio, which belongs to the technical field of workpiece surface treatment and comprises a mounting main body, wherein one end of the mounting main body is connected with a driving piece, a first mounting counter bore is formed at the other end of the mounting main body, a first buffer piece, a sliding piece and a fixing piece are sequentially arranged in the first mounting counter bore along a first direction, a buffer gap is formed in the first buffer piece in the first mounting counter bore, the sliding piece is arranged in the first mounting counter bore in a sliding mode, a sliding gap is reserved between the fixing piece and the sliding piece along the first direction, balls are arranged in the sliding gap, a through hole is formed in the fixing piece along the first direction, and at least part of the balls extend out of the through hole. The first buffer piece can apply elastic force to the ball to realize flexible rolling of the ball on the surface of the workpiece, and meanwhile, the telescopic arrangement of the first buffer piece and the sliding piece enables the ball to move along a first direction so as to adapt to the wave crest and the wave trough of the surface of the curved workpiece and realize processing of different positions of the curved workpiece.

Inventors

  • XU LONGWEN
  • ZHENG CHENG
  • QIN XIAOHONG
  • GONG YAJUAN
  • XU SHUQIN

Assignees

  • 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所)

Dates

Publication Date
20260508
Application Date
20231115

Claims (7)

  1. 1.A rolling device for processing a thin shaft thread with a large length-diameter ratio, which is characterized by comprising: One end of the mounting main body is connected with the driving piece, and a first mounting counter bore is formed at the other end of the mounting main body; A first buffer part, a sliding part and a fixing part are sequentially arranged in the first mounting counter bore along a first direction; The first buffer piece is provided with a buffer gap in the first mounting counter bore, so that the first buffer piece can buffer and compress and apply force to the sliding piece; The sliding piece is arranged in the first mounting counter bore in a sliding way, the fixing piece is connected with the mounting main body, a sliding gap is reserved between the fixing piece and the sliding piece along a first direction, and a ball is arranged in the sliding gap; the fixing piece is provided with a through hole along a first direction, and the ball at least partially extends out of the through hole; a second installation counter bore is arranged in the first installation counter bore along a first direction, and the first installation counter bore and the second installation counter bore form a step surface; The first buffer piece is arranged in the second mounting counter bore, and the sliding piece is arranged in the first mounting counter bore; the first buffer piece comprises a telescopic spring, a transmission ball and a ball seat which are sequentially arranged along a first direction; One end of the telescopic spring is abutted against the bottom wall of the second mounting counter bore, the other end of the telescopic spring is abutted against the transmission ball, a placing hole is formed in one side, facing the transmission ball, of the ball seat, and the transmission ball is arranged in the placing hole; the ball seat is arranged in the second mounting counter bore in a sliding manner, and one side, away from the transmission ball, of the ball seat abuts against the sliding piece; and a second buffer piece is further arranged between the first buffer piece and the sliding piece, and the second buffer piece is arranged in the first installation counter bore in a sliding manner.
  2. 2. The rolling device for processing the fine shaft with the large length-diameter ratio according to claim 1, wherein the outer wall of the second buffer member is attached to the inner wall surface of the first mounting counter bore, the second buffer member can deform in a telescopic manner along a first direction, and the elastic modulus of the second buffer member along the first direction is greater than that of the first buffer member along the first direction.
  3. 3. The rolling device for machining of the fine shaft threads with the large length-diameter ratio according to claim 1, wherein the sliding piece is arranged in the first installation counter bore in a sliding mode, a limiting hole is formed in the sliding piece in the second direction, an installation hole is formed in the side wall of the installation main body, a limiting pin is arranged at the installation hole, the limiting pin is inserted into the limiting hole, and a gap is reserved between the limiting hole and the limiting pin in the first direction.
  4. 4. The rolling device for processing the fine shaft with the large length-diameter ratio according to claim 3, wherein at least two mounting grooves are formed in one side, away from the second buffer piece, of the sliding piece, driven balls are rotatably arranged in the two mounting grooves, and the driven balls protrude out of the mounting grooves and are in abutting connection with the balls.
  5. 5. The rolling device for processing the fine shaft threads with the large length-diameter ratio according to claim 1, wherein the fixing piece is covered on the installation main body, the fixing piece is sleeved on the periphery of the installation main body, and a positioning pin is arranged between the fixing piece and the installation main body.
  6. 6. The rolling device for processing high-length-diameter ratio fine shaft threads according to any one of claims 1 to 5, wherein the fixing piece is of a magnetic structure, and magnetic attraction is formed between the balls and the fixing piece.
  7. 7. The rolling device for processing the fine shaft with the large length-diameter ratio according to any one of claims 1 to 5, wherein the through hole has an inner wide and outer narrow structure, and the diameter of the ball is not smaller than the diameter of the opening of the through hole.

Description

Rolling device for processing thin shaft threads with large length-diameter ratio Technical Field The invention belongs to the technical field of workpiece surface treatment, and particularly relates to a rolling device for machining a thin shaft thread with a large length-diameter ratio. Background Rolling is a non-cutting process that applies pressure to the surface of a workpiece, typically at normal temperature, with hard balls or rollers to smooth out microscopic irregularities in the surface of the workpiece, thereby altering the surface structure, mechanical properties, shape and dimensions of the surface, and the rolling process can smooth the surface of the workpiece and increase the strength of the workpiece. At present, the traditional rolling technology and the modern ultrasonic rolling technology are commonly adopted in the modes of inner hole rolling, shaft excircle rolling, plane rolling and the like. The inner hole rolling cutter can only improve the surface quality of hole parts, the cutter head of shaft excircle rolling is fixed, a flexible rolling assembly is not arranged, the cutter head is in rigid contact, the cutter head is easy to damage when in impact, the cutter head is suitable for processing aluminum copper material metal with the hardness of HRC 18-HRC 68, and the plane rolling cutter is only limited to the improvement of the surface quality of a plane workpiece, and cannot improve the surface quality of a curved surface. With the continuous development of industrial technology, curved-surface products, especially curved-surface workpieces made of nonmetallic materials, have the requirements of external surface hardness enhancement, surface roughness and residual stress elimination, and the existing rolling device and process cannot meet the processing requirements of curved-surface nonmetallic materials. Disclosure of Invention In view of one or more of the above drawbacks or improvements of the prior art, the present invention provides a rolling device for processing fine threads with a large length-diameter ratio, which is used for solving the problem that the existing rolling device cannot meet the requirements of surface strengthening hardness, surface roughness and residual stress elimination of nonmetallic materials. In order to achieve the above object, the present invention provides a rolling device for processing a fine shaft thread with a large length-diameter ratio, comprising: One end of the mounting main body is connected with the driving piece, and a first mounting counter bore is formed at the other end of the mounting main body; A first buffer part, a sliding part and a fixing part are sequentially arranged in the first mounting counter bore along a first direction; The first buffer piece is provided with a buffer gap in the first mounting counter bore, so that the first buffer piece can buffer and compress and apply force to the sliding piece; The sliding piece is arranged in the first mounting counter bore in a sliding way, the fixing piece is connected with the mounting main body, a sliding gap is reserved between the fixing piece and the sliding piece along a first direction, and a ball is arranged in the sliding gap; the fixing piece is provided with a through hole along a first direction, and the ball at least partially extends out of the through hole. As a further improvement of the invention, a second installation counter bore is arranged in the first installation counter bore along a first direction, and the first installation counter bore and the second installation counter bore form a step surface; The first buffer piece is arranged in the second mounting counter bore, and the sliding piece is arranged in the first mounting counter bore; the first buffer piece comprises a telescopic spring, a transmission ball and a ball seat which are sequentially arranged along a first direction; one end of the telescopic spring is abutted against the bottom wall of the second mounting counter bore, the other end of the telescopic spring is abutted against the transmission ball, a placing hole is formed in one side, facing the transmission ball, of the ball seat, and the transmission ball is arranged in the placing hole; The ball seat is arranged in the second installation counter bore in a sliding mode, and one side, away from the transmission ball, of the ball seat abuts against the sliding piece. As a further improvement of the invention, a second buffer piece is arranged between the first buffer piece and the sliding piece, and the second buffer piece is arranged in the first mounting counter bore in a sliding way. As a further improvement of the invention, the outer wall of the second buffer member is attached to the inner wall surface of the first mounting counter bore, the second buffer member can deform in a telescopic manner along the first direction, and the elastic modulus of the second buffer member along the first direction is greater than that of the f