Double-layered thread machining blade

Abstract

The invention discloses a double-layered thread machining blade and belongs to the field of machining tools. The double-layered thread machining blade comprises a blade body, a cutting edge part and ablade center hole, wherein the blade body comprises an upper blade and a lower blade; the blade center hole is connected to the outer wall of the upper end of the upper blade in a penetrating manner;an internal thread is tightly attached to the inner wall of the blade center hole; and connecting curved surfaces are fixedly connected in the periphery, far from the blade center hole, of the upperblade. According to the double-layered thread machining blade, as the internal thread is tightly attached to the inner wall of the blade center hole and a plurality of groups of chip guide slots are connected to the inner wall of the blade center hole in a penetrating manner, in a process of machining a large workpiece by the thread machining blade, the blade center hole can form a fulcrum force in the middle of the thread machining blade in a process that the whole thread machining blade is stressed, so that the periphery of the blade center hole is uniform; in a process that the thread machining blade rotates at a high speed, the internal thread of the blade center hole can form a central air flow, so that the large workpiece machining stability is guaranteed.

Description

technical field [0001] The invention relates to the field of processing blades, in particular to a double-layer thread processing blade. Background technique [0002] The threading blade is a blade used for cutting various workpieces, including blades and handles, which are fixed and installed with corresponding equipment through the handles, and then cut various workpieces through the blades, but during use Among them, the processing blade only has one layer of threads, and after cutting the workpiece, it cannot perform fine grinding on the workpiece, and it cannot be applied to the processing of large workpieces. [0003] The Chinese patent with the authorized notification number CN103639543A discloses a thread processing insert, including the insert body, the chip guide groove and the cutting edge angle. During the cutting process of the insert body, the symmetrically distributed chip guide groove can increase the heat dissipation of the blade area, and the chip guide gr...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a double-layer thread processing blade, which solves the problem that the processing blade only has one layer of thread and cannot refine and polish the workpiece after cutting the workpiece, and The problem that it cannot be applied to the processing of large workpieces

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