Machining cutter preventing orifice edge breakage

Abstract

The invention discloses a machining cutter preventing orifice edge breakage. The machining cutter comprises a cutter bar and a cutter body connected to the front end of the cutter bar. The cutter body comprises a cylinder body without fan-shaped corner blocks. The cylinder body is sequentially provided with a first corner-free annular cutter face, a second corner-free annular cutter face and a third corner-free annular cutter face from the front end to the rear end, wherein the external diameters of the first corner-free annular cutter face, the second corner-free annular cutter face and the third corner-free annular cutter face are gradually increased. A first cutter sharpening layer is arranged on the peripheral surface of the first corner-free annular cutter face, a second cutter sharpening layer is arranged on the peripheral surface of the second corner-free annular cutter face, and a third cutter sharpening layer is arranged on the peripheral surface of the third corner-free annular cutter face. The first cutter sharpening layer, the second cutter sharpening layer and the third cutter sharpening layer integrate the functions of trepanning, chambering, fine boring, orifice chamfering and the like, cutter change is not needed in the operation process, the number of processes is reduced, the product quality is improved, equipment and personnel are reduced, the work efficiency is improved, and the cost is lowered.

Description

technical field [0001] The invention relates to the field of processing tools, in particular to a processing tool suitable for processing thin-walled holes with castings and preventing hole chipping. Background technique [0002] Hole machining is widely used in the machinery industry and is the basic process in machining. Existing hole processing is mainly processed by methods such as drilling, reaming, drilling, and boring. Large hole processing is solid processing or with casting reserved holes. Hole processing with casting thin-walled surfaces is also available in the machinery industry, but generally it is processed by conventional tools, such as: drilling, reaming, drilling, boring and other methods. However, if drilling is used, the product will experience edge collapse during the processing. Contents of the invention [0003] The design problem to be solved by the present invention is: in view of the existing drilling, expanding, and chamfering processing methods...

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Problems solved by technology

[0003] The design problem to be solved by the present invention is: in view of the existing drilling, expanding, and chamfering processing methods, there are holes in the tool hole after drilling, many processes, and low efficiency. Chipping processing tools can solve the hole chipping phenomenon, improve product quality, improve work efficiency, and reduce costs

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