Polishing device for inner surface of tubular workpiece

Abstract

The invention discloses a polishing device for the inner surface of a tubular workpiece. The polishing device is provided with a cuboid rack box composed of a box body and a box cover. A backflow hole for leaking grinding liquid is formed in the bottom of the box body. An inlet pipe and an outlet pipe which are coaxial are arranged at the two ends of the box body respectively. The tail end, located in the box body, of the inlet pipe is tightly sleeved with a static ring. The tail end, located in the box body, of the outlet pipe is sleeved with a movable ring. A vortex generation column with the two ends extending to the inner wall of the static ring is arranged in the static ring and the static ring is sleeved with a gear ring. A transmission gear engaged with the gear ring is arranged at the portion, corresponding to the gear ring, of the box cover and arranged on an output shaft of a power device supported to the box cover. The gear ring and the inner wall of the movable ring are in close fit with the outer walls of the two ends of the tubular workpiece respectively so that the tubular workpiece, the gear ring and the movable ring can rotate synchronously. The polishing device has the advantages of being even in polishing effect and high in efficiency.

Description

technical field [0001] The invention relates to a device for grinding or polishing, in particular to a special device for special grinding. The device utilizes the Karman vortex street principle to enhance fluidity abrasives to grind workpieces. Background technique [0002] Grinding and polishing the workpiece surface with flowing abrasives is a new finishing method. There are two common methods, jet polishing and abrasive flow machining. [0003] Injection polishing is to use the polishing liquid mixed with fine abrasive particles sprayed out at high speed from the small hole of the nozzle to act on the surface of the workpiece. The microscopic uneven materials are removed through the high-speed collision and shearing of the abrasive particles. By controlling the pressure and angle of the polishing liquid when spraying The polishing process that quantitatively corrects the surface roughness of the workpiece through process parameters such as injection time and injection ti...

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Problems solved by technology

[0006] 1. Jet polishing needs to use a high-pressure liquid pump to form a high-speed jet, which is costly; the high-speed jet is formed directly in the nozzle, causing the nozzle to be easily worn; the high-speed jet sputters heavily and the abrasive waste is serious; in addition, the nozzle used in this processing method It is usually difficult to reach the inside of the tubular workpiece, and it is difficult to polish the inner surface of the tubular workpiece

[0007] 2. Abrasive flow processing usually requires a more complex hydraulic system to realize the clamping of the workpiece and the action of the pushing cylinder, which is complex and costly; at the same time, the pressure of the abrasive flow on the workpiece is extremely high during the processing, which has certain safety Hidden danger

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