A kind of deviation correction type hydraulic valve body precision honing system and method

By introducing a correction transition plate and a coaxiality mandrel into the hydraulic valve body honing system, a high-precision temporary reference is constructed to actively correct the axis deviation of the pre-machined hole, solving the problem that traditional honing cannot correct, improving coaxiality accuracy, and adapting to the needs of multi-variety, small-batch production.

CN122401265APending Publication Date: 2026-07-17XUZHOU AMCA HYDRAULICS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XUZHOU AMCA HYDRAULICS TECHNOLOGY CO LTD
Filing Date
2026-06-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, honing cannot actively correct the deviation of the pre-machined hole axis position, making it difficult to guarantee coaxiality. Furthermore, the special fixtures have poor flexibility and are difficult to adapt to multi-variety, small-batch production.

Method used

An independent, high-precision temporary process reference is constructed using a correction transition plate and a coaxiality mandrel. The coaxiality mandrel, in conjunction with the honing tool, actively corrects the axial deviation of the pre-machined valve core hole. The stepped shaft structure and fixing components ensure coaxiality and adapt to valve bodies of different specifications.

Benefits of technology

It enables proactive correction of hole axis deviation during the final machining stage, improves the coaxiality accuracy of multi-valve bodies or deep holes, simplifies fixture design, and is suitable for multi-variety, small-batch production.

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Abstract

本发明公开一种纠偏式液压阀体精密珩磨系统和方法,包括:纠偏过渡板、同轴度芯棒及固定组件;纠偏过渡板上设有精密基准孔及连接结构;同轴度芯棒为阶梯轴结构,包括大径段和小径段;小径段的外圆面分别与精密基准孔的内圆面及液压阀装配体的预加工阀芯孔的内圆面适配;固定组件用于将纠偏过渡板固定于液压阀装配体,使精密基准孔的轴线与预加工阀芯孔的轴线重合。本申请通过引入纠偏过渡板和同轴度芯棒,在工件上构建了一个独立于原设计基准的高精度临时工艺基准。珩磨加工不再追随预加工孔的偏差,而是以新的正确基准为导向,主动将孔轴线“拉回”至理想位置,从根本上解决了传统珩磨无法修正孔位偏差的问题。
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