Tool Holder Angular Compensation Vibration Suppression
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Solution Overview
Problem
Existing tool holders for machine tools face challenges in achieving a compact design while maintaining vibration suppression and angular compensation, leading to limitations in cutting speed due to excessive vibration transmission.
Innovation Solution
A tool holder design featuring a coupling device connected via drivers, an elastic plastic disc for vibration suppression, and an elastic plastic ring for angular compensation, along with a prestressing device using rolling elements and a plastic ring to ensure secure clamping and tilting, utilizing polyurethane rubber for enhanced durability and elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a tool holder with radial compensation and angle compensation is used, then machining precision is improved, but the axial length becomes considerable due to large number of components
Solution Approach 1:
The patent combines multiple functions (radial compensation, angle compensation, vibration suppression) into a single integrated coupling device. The coupling device includes a coupling element with rolling elements for radial compensation, an elastic plastic element for angle compensation and vibration suppression, and a prestressing device with additional rolling elements - all integrated into one compact unit that eliminates the need for separate components arranged axially.
Solution Approach 2:
The patent employs a nested structure where the coupling element is surrounded by the prestressing device, which in turn is surrounded by the elastic plastic element. The rolling elements are positioned within recesses in the coupling element, and the prestressing device contains both rolling elements and the elastic plastic element in a concentric arrangement, maximizing space utilization and minimizing axial length.
2Productivity
If cutting speed is increased to enable rapid processing, then productivity is improved, but vibration transmission becomes too high for precise machining
Solution Approach 1:
The patent converts the harmful effect of vibrations into a beneficial function by using the elastic plastic element as a vibration suppressor. The elastic plastic element, positioned between the coupling device and the tool-side holder part, absorbs and dampens vibrations generated during high-speed cutting, allowing high cutting speeds to be maintained without compromising machining precision.
3Device complexity
If a compact design is pursued, then device complexity is reduced, but the ability to suppress vibrations and compensate for angles may be compromised
Solution Approach 1:
The patent implements multi-functionality within the coupling device: the rolling elements provide radial compensation, the elastic plastic element provides both angle compensation and vibration suppression, and the prestressing device maintains preloading forces. This multi-functional integration achieves compact design while maintaining all necessary capabilities for vibration suppression and angular compensation.
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 design achieves effective vibration suppression and angular compensation, allowing for higher cutting speeds and precise machining by maintaining a compact structure and adaptability to tools of varying weights, while preventing heat transfer and ensuring reliable coolant delivery.
Implementation Method 1
Due to the material properties of this plastic disk and due to the arrangement of the plastic disk, this advantageously ensures that a transmission of vibrations between the machine-side and the tool-side holder part is largely suppressed
Implementation Method 2
the plastic disc also provides for any angle compensation that may be necessary, since it is designed so elastically that the tool-side holder part can tilt slightly relative to the machine-side holder part
Implementation Method 3
The tool holder also includes a radially movable coupling element and a prestressing device that clamps the tool-side holder part against the machine-side holder part, the coupling device and the prestressing device each comprising an elastic plastic element
Data Source
Figure 1
Figure 2a~3
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AI summary
The present invention relates to a tool holder with angular compensation, which enables increased cutting speeds while simultaneously compensating for angular misalignment. The tool holder according to the invention comprises a machine-side holder part (1) and a tool-side holder part (2), a coupling device (40) arranged between the holder parts (1, 2) which connects the two holder parts (1, 2) to each other with radial play in a rotationally fixed manner, and a preloading device (50) which clamps the tool-side holder part (2) against the machine-side holder part (1) and at least partially surrounds the tool-side holder part (2), wherein the preloading device (50) comprises a plurality of rolling elements (9) and an elastic plastic ring (11).According to the invention, an elastic plastic disc (17) is arranged between the coupling device (40) and the machine-side holder part (1), which, due to its material properties, prevents vibration transmission between the holder parts (1, 2) and simultaneously enables angular compensation of the tool-side holder part (2).