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Stepped drill capable of adjusting depth of stepped hole

A technology of stepped drilling and stepped holes, which is applied in the direction of stepped drilling, drilling/drilling equipment, drill repairing, etc. It can solve the problems of restricting the use of stepped drilling, the inability to adjust the blade structure, and the inability to adjust the depth of stepped holes, etc., to achieve the goal of using Convenient and practical effect

Inactive Publication Date: 2014-10-22
SUZHOU WENDING MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the blade structure of the current step drill cannot be adjusted, so the depth of the drilled step hole cannot be adjusted, which limits the use of the step drill

Method used

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  • Stepped drill capable of adjusting depth of stepped hole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Such as figure 1 As shown, the step drill with adjustable step hole depth of the present embodiment comprises a drill shank 1 and a first drilling edge 2 installed at the end of the drill shank 1, and is characterized in that the step drill is provided with a first drilling edge The head end of 2 extends to the accommodating hole 3 in the drill shank 1 or the tail end of the drill shank 1, the accommodating hole 3 is equipped with a second drilling edge 4, and the second drilling edge 4 is exposed outside the accommodating hole 3; The diameter of the second drilling edge 4 is smaller than the diameter of the first drilling edge 2; the step drill is also provided with a fastening structure for relatively fixing the first drilling edge 2 and the second drilling edge 4.

[0013] Since the second drilling edge 4 is installed using the accommodation hole 3 instead of being integrally made with the first drilling edge 2, the exposed accommodation of the second drilling edge 4...

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Abstract

The invention aims to provide a stepped drill capable of adjusting depth of a stepped hole. The stepped drill comprises a drill handle and a first drill blade mounted at the end of the drill handle. The stepped drill is characterized in that the stepped drill is provided with an accommodation hole extending from the head end of the first drill blade into the drill handle or the tail end of the drill handle, a second drill blade is mounted in the accommodation hole and exposed outside the accommodation hole, and the diameter of the second drill blade is small than that of the first drill blade. The stepped drill is provided with a fixing structure used for fixing the first drill blade and the second drill blade relatively. The stepped drill is capable of adjusting the exposure length of the second drill hole blade since the first drill blade is of hollow structure, thus, depth of the stepped hole drilled is adjustable, and the stepped drill is more convenient to use and highly practical.

Description

technical field [0001] The invention belongs to the technical field of drill bits, in particular to a step drill with adjustable step hole depth. Background technique [0002] The step drill can drill stepped holes with different diameters at one time without using two drill bits with different diameters, so the efficiency of drilling stepped holes can be improved. However, the blade structure of the present step drills cannot be adjusted, so the depth of the drilled step holes cannot be adjusted, which limits the use of the step drills. Contents of the invention [0003] The purpose of the present invention is to propose a step drill with adjustable step hole depth. [0004] The step drill with adjustable step hole depth of the present invention comprises a drill shank and a first drilling edge installed at the end of the drill shank, and is characterized in that the step drill is provided with a The accommodation hole in the inner or the tail end of the drill ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B51/009
Inventor 樊孝梅
Owner SUZHOU WENDING MOLD
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