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Three-edge taper twist drill

A technology of twist drills and twist drill rods, which is applied in the field of hole processing tools and can solve problems such as not being able to process taper holes

Inactive Publication Date: 2013-01-02
WUXI YUTIAN PRECISION TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Twist drills in the prior art have a straight rod structure and cannot be used for the processing of tapered holes.

Method used

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  • Three-edge taper twist drill

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Effect test

Embodiment Construction

[0008] like figure 1 Shown:

[0009] The three-blade taper twist drill of this embodiment is characterized in that it has an integrally formed structure, has a cylindrical drill shank 1, and a twist drill rod 2 is connected to the front end of the drill handle, and three cutting edges 3 are evenly arranged on the drill rod. The twist drill pipe described above is a tapered drill pipe with a taper of 5°. The three-blade tapered twist drill of the present invention has a drill rod with a 5° taper, which can be applied to the processing of tapered holes, and is especially suitable for the processing of tapered threaded bottom holes.

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PUM

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Abstract

The invention relates to a three-edge taper twist drill. The three-edge taper twist drill is characterized in that the three-edge taper twist drill is in an integral structure provided with a cylindrical drill shank (1), a twist drill rod (2) is connected to the front end of the drill shank, three cutting edges (3) are evenly arranged on the drill rod, and the twist drill shank is a taper drill rod with 5-degree taper. The drill rod of the three-edge taper twist drill has 5-degree taper, and the three-edge taper twist drill is applicable to machining of tapered holes and is especially applicable to machining of tapered threaded bottom holes.

Description

technical field [0001] The invention relates to a hole processing tool, in particular to a twist drill. Background technique [0002] The twist drills in the prior art have a straight rod structure and cannot be used for the processing of tapered holes. Contents of the invention [0003] In order to overcome the above-mentioned technical defects, the object of the present invention is to provide a twist drill with a tapered drill rod. [0004] The technical scheme that the present invention adopts for solving the problems of the technologies described above is: [0005] A three-blade taper twist drill, which is integrally formed, has a cylindrical drill shank, a twist drill rod is connected to the front end of the drill shank, and three cutting edges are evenly arranged on the drill rod, and the twist drill rod is a taper drill rod. Its taper is 5°. [0006] The beneficial effect of the present invention is that the three-edged tapered twist drill of the present inventi...

Claims

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Application Information

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IPC IPC(8): B23B51/02
Inventor 朱胜雷
Owner WUXI YUTIAN PRECISION TOOL
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