A reloadable rotary cutter

Abstract

The invention discloses a rotating cutter capable of being repeatedly loaded and unloaded. The rotating cutter comprises a clamping component and a cutting component installed on the clamping component, wherein the clamping component comprises a clamping handle part and a clamping head part; the cutting component comprises a cutting head part and a cutting tail part; the cutting tail part is provided with a clamping bulge; external threads are formed in the clamping bulge; a clamping recess is formed in the end surface of the clamping head part; internal threads matched with the external threads in the clamping bulge are formed in the clamping recess; the external threads comprise internal ring convex threads and external ring convex threads with different thread angles; the internal ring convex threads are cooperated with the internal threads of the clamping recess in a contact manner; the external ring convex threads are not in contact with the internal threads of the clamping recess. The rotating cutter has the advantages of high impact resistance, long service life, good stability and the like.

Description

technical field [0001] The invention relates to a cutting tool, in particular to a rotary tool which can be loaded and unloaded repeatedly. Background technique [0002] Only the cutting part of the rotary tool participates in the cutting during the machining process, and the clamping handle does not participate in the cutting. In order to avoid the damage of the cutting part and cause the entire rotary tool to be scrapped, and to prolong the service life of the rotary tool, the cutting part and the clamping part of the rotary tool are used in the industry. The holding shank is set independently, and the cutting part and the holding shank are connected by ordinary threads to realize repeated loading and unloading of the cutting part on the holding shank. However, with the rapid development of the manufacturing industry, the length-to-diameter ratio of the tool continues to increase. Therefore, higher strength and rigidity requirements are put forward for the structural stren...

AI Technical Summary

Problems solved by technology

[0002] Only the cutting part of the rotary tool participates in the cutting during the machining process, and the clamping handle does not participate in the cutting. In order to avoid the damage of the cutting part and cause the entire rotary tool to be scrapped, and to prolong the service life of the rotary tool, the cutting part and the clamping part of the rotary tool are used in the industry. The holding shank is set independently, and the cutting part and the holding shank are connected by ordinary threads to realize repeated loading and unloading of the cutting part on the holding shank. However, with the rapid development of the manufacturing industry, the length-to-diameter ratio of the tool continues to increase. Therefore, higher strength and rigidity requirements are put forward for the structural strength of the tool. In order to make the performance of this type of reloadable rotary tool close to that of the integral tool, the tool can be made of cemented carbide or a material close to the performance of cemented carbide. However, the ordinary thread is a single-thread thread. Due to the existence of manufacturing errors during loading and unloading, the contact is basically at the edge of the tooth, and the clamping shank and cutting part are high in hardness and brittle, and the force during the cutting process is easy to make the connection Partial cracks occur, which greatly reduces the service life

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