A small hole finishing method

Abstract

The invention belongs to the technical field of small hole processing, and in particular relates to a small hole finishing method. Its equipment includes machine tool part, fixture part and grinding rod part. The grinding rod has a stepped structure, which is divided into two, three or more sections, with diameters ranging from small to large, and enters the workpiece hole successively. It is characterized in that it includes the following steps: first, fix the workpiece 7 on the lower bow frame 15; second, pass the grinding rod 6 electroplated with diamond 8 through the clamping screw sleeve 11 and the bushing 10; third, use a clamp The head 5 clamps the upper end of the grinding rod; the fourth, clamps the lower end of the grinding rod with the clamping handle 13 and the tapered chuck 14; The tapered hole of tightening screw sleeve 11 matches and tightens grinding rod 6. Both ends of the grinding rod of the present invention are fixed, and are in a tensioned state during work, with high rigidity; the grinding rod has no radial feed movement, and the diameter of the hole is enlarged by the ladder structure; rough grinding and fine grinding are completed in one process, and the processing efficiency is high . Ultrasonic vibration will improve hole finish.

Description

technical field [0001] The invention belongs to the technical field of small hole processing, and in particular relates to a small hole finishing method. Background technique [0002] The technical problems in machining small-diameter deep holes are: the tool is a slender rod with poor rigidity, large deformation, and easy deviation, and the processed small deep holes are prone to deflection or other quality defects. During the machining of small deep holes, it is difficult to observe the processing parts and tools, and the processing quality cannot be controlled, which will cause the workpiece to be scrapped. Therefore, the machining of small deep holes is a difficult point in mechanical processing. In order to ensure the processing quality of small deep holes, precision machining of small deep holes is often required after rough machining of small deep holes. [0003] Wang Jun's "Modern Deep Hole Processing Technology" and Wang Shiqing's "Deep Hole Processing Technology" ...

AI Technical Summary

Problems solved by technology

[0002] The technical problems in processing small-diameter deep holes are: the tool is a slender rod with poor rigidity, large deformation, and easy deviation, and the processed small deep holes are prone to deflection or other quality defects

However, the knowledge introduced in the above works is still difficult to completely solve the problems encountered in actual production

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