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Drilling tool

A drilling tool and cutter body technology, which is applied in drilling tool accessories, drilling/drilling equipment, drilling repair, etc., can solve the problems of low processing efficiency, expensive tooling manufacturing costs, unstable quality, etc., to ensure processing quality , Improve efficiency, simplify the effect of processing procedures

Inactive Publication Date: 2015-03-04
CRRC DALIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is not only expensive to manufacture tooling, but also complicated to install and adjust. It can only process a section of main oil passage hole connecting 28.6mm and 26.3mm beveled edges at 15°, which has low processing efficiency and unstable quality.

Method used

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Experimental program
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Embodiment Construction

[0016] figure 1 It is a structural schematic diagram of the drilling tool shown in the embodiment of the present invention. like figure 1 As shown, the invention provides a drilling tool, comprising:

[0017] At least two sections of cylindrical cutter bodies 1 that are sequentially connected and whose diameters are increasing. In this embodiment, three sections of cutter bodies 1 are used as an example for illustration, that is, the first section of cutter body 11 , the middle section of cutter body 12 and the end section of cutter body 13 . The top of the first section cutter body 11 is equipped with a flat drill blade 2, and the joint between two adjacent sections of cutter body 1 is equipped with a reamer blade 3. The installation angle of the reamer blade 3 is a set inclination angle, and the outer surface of each section cutter body 1 A notch 4 for guiding debris is formed, and the outer surface of the cutter body 1 is provided with a support guide bar 5 parallel to th...

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PUM

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Abstract

The invention provides a drilling tool comprising at least two segments of sequentially connected cylindrical cutter bodies with gradually increasing diameters, wherein a chit drill blade is installed on the top end of the first segment of cutter body, a reamer blade is assembled at the connecting site of the two adjacent segments of cutter bodies, the mounting angle of the reamer blade is set to an inclination angle, a notch used for guiding chips is formed on the outer surface of each segment of cutter body, and supporting guide strip parallel to the centre axis of the cutter body is arranged on the outer surface of the cutter body. The drilling tool provided by the invention is equipped with the at least two segments of sequentially connected cylindrical cutter bodies with gradually increasing diameters and the reamer blade to process a plurality of apertures through one cutter and process bevel edges with preset angles at connecting sites of different apertures, thereby not only simplifying the processing procedure and improving the efficiency, but also effectively guaranteeing the processing quality.

Description

technical field [0001] The invention relates to machining technology, in particular to a drilling tool. Background technique [0002] The diesel engine body is the key component of the diesel engine, and the deep oil hole of the main bearing needs to be processed on the body. There are 9 deep oil holes in the main bearing. The length of the hole is 456mm. It includes three hole diameters with diameters of 28.6mm, 26.3mm and 25.7mm respectively. It is connected with two sections of 15° hypotenuse. In order to ensure the assembly quality, the deep oil hole of the main bearing needs to be processed with high precision and the surface roughness is required to be Ra1.6. [0003] In the prior art, the deep oil hole of the main bearing of the machine body is usually processed by combining two kinds of cutting tools. Firstly, the compound drill is used to process the main oil channel holes with diameters of 28.6mm and 26.3mm and a section of 15° connecting hypotenuse, and then the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/00
Inventor 孙文新郭新权韦江
Owner CRRC DALIAN CO LTD