Fine blind hole processing process

Abstract

The invention discloses a fine blind hole processing process which comprises the following steps: step 1: processing an insert hole at the position, where a fine blind hole needs to be processed, of aworkpiece, wherein the depth of the insert hole is equal to that of the fine blind hole, and the inner diameter of the insert hole is larger than that of the fine blind hole; step 2, processing an insert matched with the insert hole; step 3, processing a through hole on the insert by adopting a wire cutting method, wherein the size process of the through hole is the same as that of the fine blindhole; and step 4, fixedly mounting the insert in the insert hole. Through the above fine blind hole processing process, the size process of the fine blind hole can be guaranteed and processing residues can be prevented from remaining in the fine blind hole.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a fine blind hole processing technology. Background technique [0002] Due to the needs of the product or mold structure, some workpieces require processing of holes with extremely small diameters and non-through holes (fine blind holes). Due to the extremely small diameter of the blind hole and the high requirements for the diameter, it cannot be processed by a machine tool (reason: there is no tool with such a small diameter on the machine tool; if there is a corresponding tool, the tool will be easily broken because the hole is small and deep) . At the same time, because the blind hole does not penetrate the workpiece, it cannot be processed by wire cutting (wire cutting requires that the hole must be a through hole). In view of the above reasons, the existing technology usually adopts the method of EDM to process, but the precision of the thin blind hole of ED...

AI Technical Summary

Problems solved by technology

Due to the extremely small diameter of the blind hole and the high requirements for the diameter, it cannot be processed by a machine tool (reason: there is no tool with such a small diameter on the machine tool; if there is a corresponding tool, the tool will be easily broken because the hole is small and deep)

At the same time, because the blind hole does not penetrate the workpiece, it cannot be processed by wire cutting (wire cutting requires that the hole must be a through hole)

In view of the above reasons, the existing technology usually adopts the method of EDM to process, but the precision of the thin blind hole of EDM is not enough, and the size requirement is often not met. At the same time, EDM will leave carbon residue in the thin blind hole, and because Blind vias are too small to be cleaned

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