Inclined surface scraping method and inclined reverse surface scraping knife

Abstract

The inclined face scraping method comprises the following steps that the inclined reverse face scraping knife is arranged, and the inclined reverse face scraping knife comprises a clamping knife rod, an extending knife rod and a working part arranged at the far end of the extending knife rod; the inclined reverse face scraping cutter is controlled to enter a via hole of the workpiece to be machined along the inclined angle, and the face scraping blade abuts against an area to be machined; and the workpiece to be machined is controlled to rotate, and surface scraping treatment is conducted. The device has the advantages that the inclined reverse face scraping cutter of a unique structure is arranged, inclined cutter feeding is assisted, the specific position of the inclined reverse face scraping cutter after cutter feeding is controlled, it is guaranteed that the face scraping cutter does not interfere with a via hole during machining, meanwhile, the maximum rigidity of the face scraping cutter is guaranteed, vibration marks are prevented from being generated on the machined surface of a to-be-machined part, and the machining quality of the to-be-machined part is improved. And the technical requirements of finish machining of the scraped surface are met.

Description

technical field [0001] The invention relates to the technical field of metal cutting, in particular to an inclined surface scraping method and an inclined reverse scraping knife. Background technique [0002] In the oil and gas industry, usually the inner sealing slope of the gate valve will have an included angle of 5°-8°. For the machining of the inner sealing slope of the gate valve, the key point is to achieve high rigidity of the tool and avoid interference. In the processing of the prior art, a horizontal eccentric scraping knife is generally used, but in order to avoid interference, the diameter of the guide rod must be sacrificed, so that the knife rod will inevitably become thinner, and the entire scraping knife must pass through the inclined hole during processing , causing the slender guide rod to produce large vibrations. On the one hand, it cannot meet the technical requirements for finishing the scraped surface, and the surface of the part to be processed will...

AI Technical Summary

Problems solved by technology

In the processing of the prior art, a horizontal eccentric scraping knife is generally used, but in order to avoid interference, the diameter of the guide rod must be sacrificed, so that the knife rod will inevitably become thinner, and the entire scraping knife must pass through the inclined hole during processing , causing the slender guide rod to produce large vibrations. On the one hand, it cannot meet the technical requirements for finishing the scraped surface, and the surface of the part to be processed will produce vibration lines. Hitting the surface of the workpiece to be processed will cause the blade to break, and it will take time and effort to change the tool, and the cost will increase

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