Conical Receiving Flange for Vibration-Stable Tool Mounting
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Solution Overview
Problem
Existing mounting flanges for grinding wheels are not ideally suited for tools with a small diameter relative to their length, leading to susceptibility to bending and torsional vibrations, especially when connected to spindle shafts at both ends.
Innovation Solution
A receiving flange design featuring a conical connection between a fixed flange and a mating flange, allowing for a backlash-free and rigid connection, with torque transmission independent of axial pressure on the tool body, and enabling larger flange receptacles for improved torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard mounting flange design is used, then the tool body can be mounted, but the tool becomes susceptible to bending and torsional vibrations due to its small diameter and long length
Solution Approach 1:
The mounting flange is divided into two separate parts: a fixed flange and a detachable counter flange. This segmentation allows the fixed flange to provide stable support for the tool body while the counter flange can be detached for tool changes, resolving the contradiction between vibration resistance and operational flexibility.
Solution Approach 2:
A conical connection geometry is used between the fixed flange and counter flange instead of a cylindrical connection. The conical shape provides self-centering and rigid torque transmission, significantly improving resistance to bending and torsional vibrations while maintaining a relatively simple structural design.
2Power
If the flange connection is rigid to prevent vibrations, then torque transmission is improved, but axial pressure is applied to the tool body which can cause damage
Solution Approach 1:
The conical connection acts as an intermediary mechanism between the clamping force and the tool body. It transmits torque rigidly while directing axial pressure away from the tool body, allowing high power transmission without compromising tool body strength.
Solution Approach 2:
The conical geometry of the connection between fixed flange and counter flange enables torque transmission through radial contact forces rather than axial forces. This curvature-based design decouples torque transmission from axial loading, protecting the tool body while maintaining rigid power transmission.
3Ease of operation
If the flange design allows easy tool changes, then operational flexibility is improved, but the connection may lack the rigidity needed for high-speed operation
Solution Approach 1:
The detachable counter flange design enables easy tool changes by allowing the counter flange to be removed and reattached. The conical connection geometry ensures that each reattachment maintains precise alignment and rigid connection, preserving stability despite the segmented, easily changeable structure.
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 provides a precisely centered, rigid, and torsionally stiff connection that decouples axial pressure from the tool body, allowing for higher torque transmission and reduced vulnerability to vibrations, particularly suitable for tools with small diameters and long lengths.
Implementation Method 1
The conical connection is formed by an inner cone and an outer cone received within the inner cone. The frictional connection between the fixed flange and the mating flange is no longer achieved solely via the tool body clamped between them, but rather the frictional connection can occur directly between the fixed flange and the mating flange in the area of the conical joint.
Data Source
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AI summary
The invention relates to a receiving flange (101) having a fixed flange (110) which is designed to receive a tool body (130). A flange receiving area (111) is formed on the fixed flange (110) in order to connect to a spindle shaft. A counter flange (120) is releasably connected to the fixed flange. The fixed flange (110) and the counter flange (120) are connected together via a conical connection (150), wherein the conical connection (150) is coaxial to the tool axis (B) and is formed by an inner cone (151) and an outer cone (152) received therein.