Spiral constrained abrasive flow processing device

Abstract

The invention discloses a spiral constrained abrasive flow processing device. The spiral constrained abrasive flow processing device is used for grinding and processing the inner wall of a workpiece to be processed, and comprises a fixed plate, a spiral constrained processing device, a workpiece clamping device, a workpiece feeding device and a damping device, wherein the spiral constrained processing device, the workpiece clamping device, the workpiece feeding device and the damping device are fixedly mounted on the fixed plate; the workpiece clamping device is used for clamping the workpiece to be processed, the spiral constrained processing device comprises a grinding guide rod and a short spiral groove, the short spiral groove is fixed on the grinding guide rod, the workpiece to be processed is sheathed on the grinding guide rod, and the spiral constrained processing device and the workpiece to be processed form a constrained flow passage in the workpiece to be processed; a fluid inlet and a fluid outlet of the constrained flow passage are formed in the workpiece clamping device; and the workpiece feeding device is used for axial feeding of the workpiece clamping device and the workpiece to be processed. The spiral constrained abrasive flow processing device disclosed by the invention has high polishing efficiency and good polishing effect, and is very suitable for ultra-precise processing of the inner wall.

Description

technical field [0001] The invention relates to the field of soft abrasive flow processing, in particular to a spiral-type constrained abrasive flow processing device for ultra-precision machining of inner walls. Background technique [0002] With the rapid development of aerospace, medicine, food, chemical and other fields, the demand for various types of pipes at home and abroad is also increasing, and the requirements for the inner wall are becoming more and more stringent. Among them, magnetic polishing, honing, extrusion honing, flexible abrasive body vibration polishing, and small grinding head polishing are common, but there are certain processing limitations for workpieces that require high shape accuracy. For example, extrusion honing and flexible grinding body vibration polishing, because the elastic basic medium with high viscosity is used, it will be subjected to strong shearing action of strong viscous force during wall surface processing, which will destroy the...

AI Technical Summary

Problems solved by technology

In order to achieve a turbulent state for the abrasive particle flow, the fluid in the flow channel must have a high velocity. The existing speed-increasing method mainly introduces a confinement module, which forms a closed confinement channel with the processed wall to make the fluid flow from a narrow However, this method still requires high speed at the fluid inlet port, which puts high demands on the water pump, greatly increases the processing cost, and takes a long time to polish the workpiece. , the polishing efficiency is generally low

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