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A hydraulic-based self-correction system for small and medium diameter deep hole machining

A self-correcting, small and medium technology, used in metal processing equipment, manufacturing tools, boring/drilling, etc., can solve problems such as tool instability, insufficient tool rigidity, axis deflection, etc., to ensure processing stability and improve rigidity. , the effect of eliminating adverse effects

Active Publication Date: 2022-04-19
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Considering the slender characteristics of the deep hole, it is determined that the deep hole tool must also be slender, resulting in insufficient rigidity of the tool. When subjected to a large cutting force, the tool will inevitably appear unstable, resulting in the deflection of the axis

Method used

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  • A hydraulic-based self-correction system for small and medium diameter deep hole machining
  • A hydraulic-based self-correction system for small and medium diameter deep hole machining
  • A hydraulic-based self-correction system for small and medium diameter deep hole machining

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Embodiment Construction

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0046] This deep hole processing deviation correction system is mainly used to improve small and medium diameter deep holes ( The following) axis deflection problem during processing, used in conjunction with carbide gun drills, such as Figure 1-12 As shown, the self-correcting system of the present invention includes parts such as workpieces, cutters, main and auxiliary oil circuits, and correcting bodies.

[0047] The workpiece part includes a workpiece 1 and a drill sleeve 3 .

[0048] The cutter part includes a drill bit 2 and a drill rod 4 on which a V-shaped groove 15 is opened.

[0049] The self-correcting body includes an outer sleeve 8 , an inner sleeve 5 , an elastic plug 7 , a sealing ring 9 , an external motor 12 and a supporting device 13 .

[0050] The main and auxiliary oil passages include an oil feeder 19 , a main oil passage 16 , a debri...

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Abstract

The invention is applied to the field of small and medium diameter deep hole processing, and in particular relates to a hydraulically-based self-correcting system for small and medium diameter deep hole processing. Including inner rotary body, outer rotary body and driving mechanism; the inner rotary body is sleeved on the outer periphery of the drill pipe and fixed relative to the drill pipe; cutting fluid is filled between the inner rotary body and the outer rotary body so that the inner rotary body and the outer rotary body A flow channel is formed between the bodies, and the flow channel includes a plurality of wedge-shaped flow channels uniformly distributed in the circumferential direction. When the driving mechanism drives the inner rotary body to rotate, the cutting fluid enters the small end from the large end of the wedge-shaped flow channel, and the superposition of pressure flow and shear flow generates Oil film pressure realizes self-centering and self-correction of drill pipe. The present invention forms a wedge-shaped flow space between the wedge-shaped entity and the outer sleeve. Under normal conditions, the oil film pressure in the wedge-shaped space provides a circumferentially symmetrical self-centering force; when the drill pipe is deflected, the wedge-shaped space will generate oil film pressure, that is, self-correction The drill pipe can be "pushed back" to the correct axis by using the self-correcting force, so as to realize the self-correction of the axis deviation.

Description

technical field [0001] The invention is mainly used in the field of small and medium-diameter deep hole processing, and in particular relates to a hydraulic-based self-correcting system for small and medium-diameter deep hole processing. Background technique [0002] Deep hole processing technology originated in the manufacturing process of guns and barrels, and metal tubular firearms became the earliest deep hole parts. Before the end of World War II, the development and application of deep hole processing technology has been limited to the relatively closed field of military industry, and it is famous in the machinery manufacturing industry for its high difficulty, high cost and mystery. With the development of science and technology, deep hole processing technology has been widely used in aerospace, energy mining, automobile manufacturing, petrochemical, metallurgy, instrumentation, national defense equipment manufacturing and other industrial fields. Large size and high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B47/00B23B41/02
CPCB23B47/00B23B41/02
Inventor 程寓钱清
Owner NANJING UNIV OF SCI & TECH
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