一种聚甲醛结晶器内套管内表面镗削装置及方法

By using a combination of boring feed trolley and centering cable on the inner sleeve of the polyoxymethylene (POM) sleeve crystallizer, the problems of clamping deformation and cutting chatter of the inner sleeve were solved, achieving efficient and stable inner wall boring, improving the surface finish of the inner sleeve and the service life of the equipment.

CN121589326BActive Publication Date: 2026-07-17LIAONING YUANCHUANG PETROCHEMICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING YUANCHUANG PETROCHEMICAL TECH CO LTD
Filing Date
2026-01-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional boring methods for machining the inner sleeve of polyoxymethylene (POM) tube crystallizers suffer from problems such as difficulty in clamping, easy deformation, cutting chatter, poor machining accuracy, and low efficiency. This results in an uneven inner wall, increased fluid resistance, reduced flow rate, and potential media reactions, thus affecting the equipment's lifespan.

Method used

A boring feed trolley is used to achieve long-distance axial feeding of the inner sleeve through multi-stage transmission rods, combined with a centering steel cable and an internal support mechanism. The boring mechanism is used to bore the weld repair area to ensure the stability and machining accuracy of the inner sleeve.

Benefits of technology

It effectively overcomes clamping deformation and cutting chatter of the inner sleeve, improves processing stability and surface finish, enhances the rigidity of the inner sleeve, extends equipment life and improves production efficiency.

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Abstract

本发明提出的是一种聚甲醛结晶器内套管内表面镗削装置及方法，用于解决细长内套管（L / D>25）内壁修复加工时易变形、颤振的难题。该装置包括镗削进给滑车、传动导杆、首机架、内撑机构、镗削机构、定芯钢索、管座和尾机架；内套管一端由管座外夹，另一端由内撑机构内撑；镗削机构由传动导杆驱动深入内套管内旋转镗削，同时由贯穿内套管腔的定芯钢索径向牵制以抑制振动。本发明通过一端卡盘外夹持，另一端通过弹性支撑内支撑，形成外卡内撑两点固定；钢丝绳贯穿内套管牵制镗削头进行定心，实现了对细长薄壁套管的稳定、高精度镗削，有效提高了修复后内壁的光洁度和加工效率，特别适用于聚甲醛结晶器内套管的修复作业。
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Citation Information

Patent Citations

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