Multi-Cavity Hydraulic Tool Holder for Deep-Hole Vibration Damping
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Solution Overview
Problem
Existing hydraulic tool holders experience excessive vibration during deep-hole machining, leading to low surface quality.
Innovation Solution
A vibration-damping hydraulic tool holder based on a multi-cavity structure, featuring a gripper with independent hydraulic units and a sealing sleeve, which applies clamping force to the tool and includes throttle valves to adjust hydraulic oil flow and enhance damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional single-cavity hydraulic structure is used, then the device complexity is low, but the vibration-damping performance is insufficient leading to excessive vibration during machining
Solution Approach 1:
The single oil cavity is divided into multiple independent oil cavities (first oil cavity, second oil cavity, third oil cavity, fourth oil cavity) that are distributed around the clamping hole. Each cavity is connected to the hydraulic oil supply through separate channels, allowing independent vibration damping in different directions and frequency bands, thereby improving overall vibration-damping performance without requiring a completely new system architecture
Solution Approach 2:
The multiple oil cavities are nested within the gripper body structure, with each cavity positioned in a specific spatial arrangement around the clamping hole. The cavities are integrated into the existing gripper geometry, with oil channels routing hydraulic fluid from the supply through each nested cavity space, achieving compact multi-cavity integration without significantly increasing external dimensions
2Stability of the object's composition
If multiple independent hydraulic units are added to improve clamping stability, then the clamping force stability is improved, but the device complexity increases
Solution Approach 1:
Multiple hydraulic units share common components including the hydraulic oil supply, sealing sleeve, and gripper body structure. The oil channels from different hydraulic units are integrated into the gripper design, and the sealing sleeve provides unified sealing for all cavities, reducing the number of separate components needed while maintaining multiple independent clamping zones
Solution Approach 2:
The hydraulic oil supply serves multiple functions by distributing oil to all four oil cavities through the integrated channel system. The sealing sleeve simultaneously seals all cavities and maintains hydraulic pressure across multiple units. The gripper body structure provides both the mounting framework and the clamping surfaces, eliminating the need for separate structural components for each hydraulic unit
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The multi-cavity structure effectively improves vibration-damping in specific frequency bands, enhancing the stability of the tool holder and maintaining a stable clamping force during machining, thereby improving surface quality.
Implementation Method 1
The oil cavity is filled with hydraulic oil, which can effectively improve the vibration-damping effect in a specific frequency band
Implementation Method 2
a throttle valve is arranged on a connecting oil circuit between the first oil cavity and the first oil channel
Implementation Method 3
the oil cavity is filled with special hydraulic oil, which can evenly transfer the hydraulic oil to each part of the closed oil cavity. When the inner hexagonal wrench is used to tighten the pressure bolt and increase the oil pressure in the oil cavity, each part of the closed oil cavity will be subjected to the same pressure
Implementation Method 4
When the pressure bolt is loosened, the oil pressure in the oil cavity falls back, and the inner wall of the clamping hole returns to the original diameter under the action of the elastic recovery force to loosen the tool
Data Source
AI summary
A vibration-damping hydraulic tool holder based on a multi-cavity structure is provided. The vibration-damping hydraulic tool holder based on the multi-cavity structure includes a gripper, one end of the gripper is provided with an installation groove, the installation groove is filled with a sealing sleeve, the center of the sealing sleeve is provided with a clamping hole for clamping the tool, and several independent hydraulic units are set on the gripper to apply clamping force to the tool; the hydraulic unit consists of two hydraulic components, the two hydraulic components on the same hydraulic unit are set relatively and connected with each other, an oil injection hole is set on the gripper to add hydraulic oil to the hydraulic unit; The hydraulic tool holder based on multi-cavity structure vibration reduction can solve the problem of low surface quality caused by excessive vibration of the existing hydraulic tool holder.