Method for detecting roundness and straightness of large deep hole part in boring process

A detection method and straightness technology, applied in the direction of measuring devices, instruments, and optical devices, can solve the problems of unsatisfactory processing accuracy, difficulty in automation, and large errors, so as to improve the degree of automation and work efficiency, simple implementation, and calculation convenient effect

Active Publication Date: 2019-08-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

However, this measurement method has large errors and cannot meet the needs of existing machining accuracy.
[0004] Xi'an Institute of Optics and Fine Mechanics once proposed to use laser and CCD sensors to detect the roundness of large cylindrical parts. However, this method is inefficient and requires manual operation, which is difficult to automate.

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  • Method for detecting roundness and straightness of large deep hole part in boring process
  • Method for detecting roundness and straightness of large deep hole part in boring process
  • Method for detecting roundness and straightness of large deep hole part in boring process

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Embodiment Construction

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0053] Such as Figure 1-5 As shown in , the embodiment of the present invention discloses a method for detecting the roundness and straightness of large deep hole parts during the boring process. The steps of the detection method are as follows:

[0054] Step (1), such as figure 1 As shown, the roundness and straightness detection system of large deep hole parts is constructed: it includes: floating boring tool 2, cutter bar 3, reflective prism 4, beam split...

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Abstract

The invention discloses a method for detecting the roundness and straightness of a large deep hole part in a boring process. Firstly, a system for detecting the roundness and straightness of the largedeep hole part is established; laser light emitted by a laser displacement sensor is divided into two beams of light through a reflection prism; one beam of light is returned to the laser displacement sensor along an original light path, and the other beam of light is irradiated on a position sensitive detector through a spectroscope; the laser displacement sensor and the position sensitive detector transmits collected information to a data acquisition card in real time, and the information is processed through a data storage module and a pre-machining module; and finally measured roundness and straightness errors are evaluated in an error evaluation module. According to the detection method disclosed by the invention, machining parameters can be adjusted according to a detected error signal, and feedback closed-loop control is carried out on boring machining, so that the machining quality is improved, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of detection of roundness and straightness of large deep-hole parts, in particular to a method for detecting the roundness and straightness of large deep-hole parts during the boring process. Background technique [0002] Generally, holes with an aspect ratio greater than 10 are called deep holes. Deep hole processing accounts for more than 40% of the hole processing field, such as gun barrels, artillery barrels, large ship crankshafts, aircraft landing gear, oil drilling cylinders, and nuclear power pumps. etc. belong to the category of deep hole processing. Due to the large diameter and long aspect ratio of large deep hole parts, the internal space is relatively narrow, which brings great difficulties to the processing and measurement process. [0003] At present, there is no proprietary high-precision testing instrument for the roundness and straightness testing of large deep-hole parts. For the measure...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G01B11/27
CPCG01B11/2408G01B11/27
Inventor 刘志兵陈晖王西彬焦黎梁志强颜培周天丰解丽静沈文华滕龙龙刘书尧潘金秋刘洋
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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