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A control method of optical fiber preform precision stretching numerical control machine tool

A technology for optical fiber preforms and CNC machine tools, which is applied in manufacturing tools and glass manufacturing equipment, etc. It can solve the problems of unstable running speed of the chuck at the right end, non-modifiable control rule table, and difficulty in setting parameters, so as to achieve stable speed and meet control requirements. Requirements, accurate positioning effect

Active Publication Date: 2019-02-05
NANJING LANTAI TRAFFIC FACILITIES CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of unstable running speed and inaccurate positioning of the chuck at the right end of the existing optical fiber preform glass lathe; at the same time, it overcomes the difficulty in setting parameters and the inability to determine the control rule table in the existing PID fuzzy control scheme Modify the shortcomings to realize automatic control

Method used

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  • A control method of optical fiber preform precision stretching numerical control machine tool
  • A control method of optical fiber preform precision stretching numerical control machine tool
  • A control method of optical fiber preform precision stretching numerical control machine tool

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] In this example, a preform rod with a length of about 1500mm and a diameter of about 48mm is changed to a diameter of 40mm after being stretched. After the stretching operation, the impurities on the optical fiber preform can be removed and prepared for the subsequent drawing operation.

[0036] The optical fiber preform precision extension CNC machine tool is composed of the left end chuck 1, the mobile blowtorch 2, the chuck 3, the diameter measuring instrument, the gas flow controller, the graphite roller 6, and the servo motor. Different from ordinary glass lathes, the positions of the left and right chucks and the moving torch table of this machine can be adjusted through a guide rail behind the bed to ensure the accuracy of the processing position. The maximum distance between the left and right chucks of the machine tool is 300...

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Abstract

The invention discloses an optical fiber perform rod precision extension numerical controlled machine tool and a control method for same. The main body of the machine tool is an optical fiber perform rod precision extension numerical controlled machine tool mainly composed of a mechanical part, an electrical control part and a heating apparatus gas path control part. The mechanical part is operated with speed adjustment by cooperation between a Lenze motor and a precision planet-gear speed reducer and transmission by a spline shaft, thus satisfying demand on transmission precision and process design. In the electrical control part, a self-adaption fuzzy control algorithm based on rule modification is employed to control stability of speed and accuracy of position of a moving fixture. The heating apparatus gas path control part employs three control gases, including nitrogen, hydrogen and oxygen, to ensure security of the equipment and achieve automatic control. By means of the machine tool, extension efficiency of an optical fiber perform rod is increased, and diameter fluctuation of extended optical fiber perform rods is controlled to be within 0.5 mm well.

Description

technical field [0001] The invention belongs to the field of machine tool design and control, and more specifically relates to a device for precisely extending an optical fiber preform and a control method thereof. Background technique [0002] With the rapid development of modern society, the application of Internet and communication technology is becoming more and more extensive, broadband has entered thousands of households, and the demand for optical fiber is also increasing. Optical fiber preforms are suitable glass rods that are first melted when manufacturing optical fibers. The precision extension of optical fiber preform is a transition process between VAD core rod deposition and OVD cladding deposition. According to the needs of subsequent wire drawing or in order to remove the defects on the preformed rod, the large size rod is extended to a smaller size. Great. Although stretching is only an auxiliary process in the optical fiber preform manufacturing process, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/012C03B37/07
CPCC03B37/012C03B37/07
Inventor 徐海黎韦勇王景良朱龙彪
Owner NANJING LANTAI TRAFFIC FACILITIES CO LTD
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