一种用于增强大悬伸车刀动态特性与稳定域的装置及方法

By designing an adjustable clamping device and adjustment method, the problem of adjusting the dynamic characteristics of large overhang turning tools under multiple cutting conditions was solved, improving cutting stability and surface quality, and reducing production costs.

CN117983849BActive Publication Date: 2026-07-17DALIAN UNIV OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Filing Date
2024-01-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing passive vibration damping technologies cannot achieve a wide range of continuous adjustments to the dynamic characteristics of large overhang cutting tools, making it difficult to adapt to multiple cutting conditions, and modifying all cutting tools would increase production costs.

Method used

An adjustable clamping device including a connecting plate, a tool holder, a damping tube, a frequency modulator, and a locking mechanism is designed. By adjusting the number, position, torque, and size of the tool holder bolts and the frequency modulator, the dynamic characteristics of the tool can be continuously adjusted, and the stability domain is enhanced by combining a frequency shifting strategy.

Benefits of technology

It maximizes the tool stability range, improves the cutting surface quality, reduces production costs, and is suitable for internal turning tools of different sizes and models.

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Abstract

本发明公开了一种用于增强大悬伸车刀动态特性与稳定域的装置及方法,该装置包括连接板、刀座、调频器、阻尼管以及锁紧机构五部分;连接板内置叠放的双楔形块,通过旋拧光学螺栓推动楔形块进而调整刀具中心高;刀座固定在连接板上,刀具尾部与内部的阻尼管过盈配合连接;锁紧机构安装在刀座滑槽内,其上的刀架螺栓可对刀具尾部施加预紧力,并与安装在阻尼管前端凹槽内的调频器一起共同影响刀具的频率与动刚度;所设计的夹持装置无需改造刀具结构,通过优选刀架螺栓的数量、位置、扭矩以及调频器尺寸,确保刀具动态特性始终最优匹配于选定的切削工况,进而满足不同尺寸车刀的差异化抑振需求。
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