Universal drill bit for steel part machining

A general-purpose drill bit and drill bit technology, which is applied in metal processing equipment, drill repairing, drilling tool accessories, etc., can solve the problems of insufficient, easy-to-break edge machining accuracy, etc., and achieve the effects of reducing wear, avoiding edge chipping, and ensuring central strength

Pending Publication Date: 2021-04-27
阿斯图精密工具(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a universal drill bit for processing steel parts, which solves the probl

Method used

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  • Universal drill bit for steel part machining
  • Universal drill bit for steel part machining
  • Universal drill bit for steel part machining

Examples

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Example Embodiment

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] figure 1 It is a schematic diagram of the structure of a general drill bit used for processing steel parts in the embodiment of the present invention.

[0022] See figure 1 The universal drill bit used for steel parts processing according to the embodiment of the present invention includes a drill bit body, and the drill bit body includes a shank 1, a blade portion 2 and a drill tip 6, and the blade portion 2 is provided with a taper to prevent the concentration of cutting amount and reduce cutting resistance; the blade portion 2 has two helical grooves 5, the two helical grooves 5 are arranged symmetrically, the helix angle θ of the helical grooves 5 is 20° to 30°, and the core thickness of the helical grooves 5 is The diameter of the drill body is 21% to 28%, and the large-depth spiral groove 5 ensures the effect of chip removal.

[0023] Sp...

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Abstract

The invention discloses a universal drill bit for steel part machining, which comprises a drill bit body, and the drill bit body comprises a handle part, a blade part and a drill tip; the blade part is provided with two spiral grooves which are symmetrically arranged, and a cutting edge is formed at the joint of the wall face of each spiral groove and the outer wall of the blade part; the cutting edge forms negative chamfered edges on the wall surfaces of the spiral grooves; blade strips are arranged on the back of the cutting edge and comprise a main blade strip and an auxiliary blade strip which are arranged in sequence, and the main blade strip and the auxiliary blade strip are connected through a concave carved back; and the spiral grooves extend from the blade part to the drill tip, a groove is formed in the drill tip, a groove blade is formed at the joint of the groove and the drill tip, a chip containing groove is formed in the drill tip, a chip containing groove blade is formed at the joint of the chip containing groove and the drill tip, and the chip containing groove blade is connected with the groove blade through an arc-shaped transition blade. According to the universal drill bit for steel part machining provided by the invention, blade tipping is not prone to happening, machining precision is guaranteed, and meanwhile the machining service life is prolonged.

Description

technical field [0001] The invention relates to a drill bit, in particular to a universal drill bit used for processing steel parts. Background technique [0002] With the development of precision machinery manufacturing in modern society, metal cutting has higher and higher requirements for materials and processes. In the past, the heat treatment of our materials was generally carried out after hole processing. The disadvantage of this is that the workpiece will be deformed in the process of cold and heat changes. Therefore, in order to achieve high precision, cutting is required after heat treatment, but the hardness of the quenched material is often improved. The traditional drill bit has a very short life when processing difficult-to-machine materials such as steel and cast iron, and the drill bit is easy to break and collapse. At the same time, when machining deep holes with high precision requirements, it is usually necessary to replace the tool to complete the rough m...

Claims

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Application Information

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IPC IPC(8): B23B51/00
CPCB23B51/00
Inventor 谢叶飞
Owner 阿斯图精密工具(上海)有限公司
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