Rice milling emery roll ventilation hole drill bit and drilling equipment

Abstract

The invention relates to the technical field of machining tools and provides a rice milling emery roll ventilation hole drill bit and drilling equipment. The drill bit comprises a drill bit body (10) and at least two blades (20). The end of the drill bit body (10) is provided with two staggered blade fixing portions (121) which are opposite and parallel to each other. The two blades (20) are respectively arranged on the blade fixing portions (121) and pressed and fixed to the drill bit body (10) through press blocks (30). A spacing pad (40) is arranged between the blades t (20). The rice milling emery roll ventilation hole drill bit is abrasion resistant, long in service life, high in production efficiency, easy to guide air and water, easy to remove chips and high in blade assembly accuracy.

Description

【Technical field】 [0001] The invention relates to the technical field of processing tools, in particular to a rice milling emery roller ventilation hole drill bit and drilling equipment. 【Background technique】 [0002] The emery roller is an important part used in the rice milling machine, which is made of silicon carbide sand grains and epoxy resin. Rice milling is to use the rotating emery roller to make the rice grains and the components of the whitening chamber and the rice grains collide with each other, rub and roll, and remove part or all of the rice grain skin by grinding and friction to make it The process of making rice that meets predetermined quality requirements. [0003] In the process of rice milling, due to the effects of collision and tumbling, a certain amount of heat is also generated while partially or completely removing the cortex of the rice grains. Part of the heat is dissipated into the atmosphere through the components of the whitening room, the o...

AI Technical Summary

Problems solved by technology

[0005] In the existing cutting tools, if the drill bit uses two or more blades, and no isolation measures are used between the blades, it will cause mutual wear between the blades, inconvenient air and water conduction, inconvenient chip removal, and low assembly accuracy (lack of positioning parts after inserting the blade into the slot) and other issues

[0006] In addition, in the blade fixing methods of existing cutting tools, the assembly method of pressing the blade on the tool body is generally assembled from the end of the compression block to the end of the tool body through a threaded connection device. Since the end of the compression block needs to fix the head of the threaded connection device, the cross section of the compression block needs to be larger, resulting in a larger volume of the compression block. In addition, due to the limited assembly space, the cross section of the compression block cannot be made too large , so only a small part of the head of the threaded connection device is pressed against the compression block, and the thread locking strength is not enough

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