Tool Receiving Structure for Distributed Torque Transmission
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Solution Overview
Problem
Machine tools with rotating oscillating tool receiving devices face challenges in reliably transmitting output torque due to alternating bending stresses, which can lead to micro cracks and reduced operational stability.
Innovation Solution
The design of the machine tool includes a tool receiving device with output areas arranged at a distance from the rotational axis, featuring inclined surfaces that distribute the torque load more evenly, reducing peak stresses and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tool receiving device rotates at high speed, then productivity is improved, but alternating bending stresses cause micro cracks and reduce reliability
Solution Approach 1:
The tool receiving device is segmented into multiple output areas arranged circumferentially around the rotational axis. This segmentation distributes the torque transmission across multiple discrete contact points, reducing the bending stress concentration at any single location and mitigating the formation of micro cracks during high-speed rotation.
Solution Approach 2:
The output areas are positioned at specific distances from the rotational axis to optimize the distribution of bending stresses. By strategically locating these output areas, the design creates zones of reduced stress concentration that prevent crack initiation while maintaining effective torque transmission during high-speed operation.
2Stability of the object's composition
If output areas are arranged at a distance from the rotational axis, then torque load distribution is improved, but peak stress concentrations are reduced
Solution Approach 1:
The output areas are arranged in a circumferential pattern around the rotational axis, transitioning from a single-plane torque transmission to a three-dimensional distributed arrangement. This spatial distribution across multiple angular positions creates a more uniform stress profile, reducing peak stress concentrations while improving overall torque load distribution stability.
Data Source
AI summary
The invention relates to a machine tool with a tool receiving device that is movable around an output shaft. The tool receiving device is designed to hold a tool device on the machine tool such that the output shaft and a tool rotation axis substantially coincide. The tool receiving device has at least one torque transmission region and a holding device. To transmit a driving force to the tool device, the torque transmission region has at least two output area regions arranged at a distance from said output shaft, with each having a multiplicity of surface points. The tangent planes to said surface points are inclined in regard to an axial plane including said output shaft. The tangent planes are inclined in regard to a radial plane extending perpendicularly to the output shaft. The machine tool thus transmits the output torque to the tool device via the tool receiving device.