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Tapered step drill

A stepped drill bit and tapered technology, which is applied in the direction of stepped drill, tapered drill, repair drill, etc., can solve the problems of waste and damage, and achieve the effect of saving resources

Inactive Publication Date: 2015-05-27
滁州用朴合金工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of tapered stepped drill bit generally includes a drill bit, a tapered body and a drill shank. It needs to be replaced as a whole, which causes a lot of waste to a certain extent

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0016] Such as figure 1 , 2 As shown in and 3, a tapered step drill bit includes a drill bit 2, a drill shank 3 and a tapered body.

[0017] The tapered body includes a number of stepped sections 1 connected sequentially from top to bottom. The stepped section 1 includes a cylindrical body 4 and an inverted truncated cone-shaped sub-body 5 sequentially arranged from top to bottom. 5 and the cylindrical main body 4 are integrally formed, the central axis of the inverted truncated conical sub-body 5 and the cylindrical main body 4 are on the same straight line, and the top surface of the truncated conical sub-body is connected with the bottom surface of the cylindrical main body 4, And the area is e...

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PUM

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Abstract

The invention discloses a tapered step drill which comprises a drill, a drill handle and a tapered main body, wherein the tapered main body comprises a plurality of step sections which are connected in sequence from top to bottom; each step section comprises cylindrical main bodies and an inverted truncated conical secondary body, the cylindrical main bodies are arranged in sequence from top to bottom, central axes of the inverted truncated conical secondary body and the cylindrical main bodies are on the same straight line, the top surface of the inverted truncated conical secondary body is connected with the bottom surfaces of the cylindrical main bodies, the areas of the top surface of the inverted truncated conical secondary body and the bottom surfaces of the cylindrical main bodies are equal, thread through holes along the central axes are formed in the step sections, a threaded hole is formed in the drill, one end of the drill handle is used for connecting a clamping device, threads are formed on the other end of the drill handle, one end, which is provided with the threads, of the drill handle penetrates through the plurality of step sections in sequence, and the end of the drill handle is screwed in the threaded hole. According to the tapered step drill, the drill, the drill handle and the tapered main body are not integrated, additionally, the tapered main body is composed of the plurality of step sections, and when partial step sections are damaged, only the corresponding part needs to be replaced, so that resources are saved.

Description

Technical field [0001] The invention relates to a drill bit, in particular to a tapered step drill bit. Background technique [0002] The tapered step drill is a combined tool that uses the same drill to process round holes with different diameters from small to large in one pass. This kind of tapered step drill bit generally includes a drill bit, a tapered body and a drill shank, which are integrally formed. In normal production, the drill bit and the tapered cylinder are easily damaged, but this type of damage is often partial damage. It needs to be replaced as a whole, which caused a lot of waste to a certain extent. Summary of the invention [0003] In order to solve the above technical problems, the present invention provides a tapered step drill bit. [0004] In order to achieve the above objective, the technical solution adopted by the present invention is: [0005] A tapered step drill bit, comprising a drill bit, a drill shank, and a tapered body; the tapered body includes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B51/009B23B51/0081B23B2251/02B23B2265/08
Inventor 祁长岭
Owner 滁州用朴合金工具有限公司
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