Transferable drill bit deep hole drilling, processing method and application

A processing method and deep hole drilling technology, which is applied in the field of aerospace, can solve the problems of easy blockage of drill pipes and low processing efficiency, and achieve the effects of low probability of blockage, high processing efficiency, and reduced probability of blockage

Active Publication Date: 2020-05-15
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a deep hole drilling, processing method and application of a transferable drill bit to solve the problem of the need for two drill bits and drill pipes corresponding to the radial size when deep hole drilling processes step holes, low processing efficiency, and small hole diameter. The technical problem that the drill pipe is easy to be blocked

Method used

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  • Transferable drill bit deep hole drilling, processing method and application
  • Transferable drill bit deep hole drilling, processing method and application
  • Transferable drill bit deep hole drilling, processing method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0042] 1. Drill bit selection, according to the size of the step hole to be processed on the long axis of the power, determine the radial size of the large-diameter drill bit 3 and the radial size of the small-diameter drill bit 4, the radial size of the large-diameter drill bit 3 is 25.8mm, and the small-diameter drill bit The radial dimension of 4 is 15.2mm.

[0043] 2. Processing speed, the feeding speed of the large-diameter drill bit 3 is 0.14mm / rev, and the feed speed of the small-diameter drill bit 4 is 0.12mm / rev, so as to ensure the smooth discharge of debris and avoid the blockage of the drill pipe 1.

[0044] 3. Positioning, mark the center point of the step hole to be processed on the long axis of the power to ensure the accuracy of the drilling position. When marking the center point, ensure that the drill bit is perpendicular to the step hole of the power long axis to ensure the smooth discharge of debris and reduce the wall thickness difference of the power long...

Embodiment 2

[0052] 1. Drill bit selection, according to the size of the step hole to be processed on the long axis of the power, determine the radial size of the large diameter drill bit 3 and the radial size of the small diameter drill bit 4, the radial size of the large diameter drill bit 3 is 40mm, and the small diameter drill bit 4 The radial dimension is 18mm.

[0053] 2. Processing speed, the feeding speed of the large-diameter drill bit 3 is 0.15 mm / rev, and the feed speed of the small-diameter drill bit 4 is 0.12 mm / rev, so as to ensure the smooth discharge of debris and avoid the blockage of the drill pipe 1.

[0054] 3. Positioning, mark the center point of the step hole to be processed on the long axis of the power to ensure the accuracy of the drilling position. When marking the center point, ensure that the drill bit is perpendicular to the step hole of the power long axis to ensure the smooth discharge of debris and reduce the wall thickness difference of the power long axis...

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Abstract

The invention discloses a deep hole drill with a transferable drill bit, a processing method and an application thereof. The deep hole drill with a transferable drill bit is used for deep hole processing with a step with a length-to-diameter ratio greater than 15 and a wall thickness less than 5 mm, including a drill rod, The drill bit assembly end of the drill pipe is provided with a transfer structure for guiding the drill bit to be assembled on the drill pipe in the axial direction and adapted to the transfer assembly of drill bits of different radial sizes. Coaxial rotation. The drill bit assembly end of the drill pipe is equipped with a transfer structure that can be used to transfer and assemble drill bits of different radial sizes without changing the drill pipe. The drill pipe matched with the large diameter drill bit is used throughout the process, which greatly reduces the probability of drill pipe clogging and does not need to be repeated. The preparation work for replacing the drill pipe has high processing efficiency.

Description

technical field [0001] The invention relates to the field of aerospace and aviation, in particular to a deep hole drill with an adjustable drill bit. In addition, the present invention also relates to a processing method and application of a deep hole drill including the above-mentioned convertible drill bit. Background technique [0002] Deep hole drilling is a technology widely used in the machinery manufacturing industry, especially the aerospace manufacturing industry. The long-axis parts involved in this field require higher and higher levels of deep hole drilling technology, especially for thin Wall slender shaft parts. The aspect ratio of such parts is generally greater than 15, the wall thickness is generally less than 5mm, and the rigidity is poor. The requirements for chip removal, tool life, and equipment in deep hole drilling are extremely strict. At present, when using deep hole drilling technology to process stepped holes, the method of processing small holes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/00B23B41/00B23B35/00
CPCB23B2251/02B23B35/00B23B41/00B23B51/00B23B51/009B23B51/0411B23B51/063
Inventor 胡俊华任星张世荣刘芳李颖慧刘杰
Owner CHINA HANGFA SOUTH IND CO LTD
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