Disc Tool Holder Axial Plug-In Connection Torque Transmission
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Solution Overview
Problem
Existing tool holders for disc-shaped tools face challenges in efficiently transmitting high torque while maintaining ease of assembly and disassembly, often requiring numerous screw connections that complicate attachment and removal processes.
Innovation Solution
The tool holder incorporates axially detachable plug-in connections with rotary stops between coupling means and through-holes, allowing for increased torque absorption and easy assembly/disassembly, featuring a central screw connection for axial security and optional frictional or rotary driving, along with shaped bodies for precise alignment and optimized cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple screw connections are used to increase torque transmission, then torque absorption capability is improved, but assembly and disassembly time increases
Solution Approach 1:
The fastening system is divided into two functional segments: a central fixing arrangement for axial positioning and easy attachment/detachment, and distributed coupling means with rotary stops for torque transmission. This segmentation allows each part to specialize - the central arrangement enables quick assembly while the coupling means provide torque multiplication through their radial distribution and form-fit engagement.
Solution Approach 2:
The coupling means extend the fastening function from the central axial dimension to the radial dimension by distributing multiple coupling points around the circumference. This radial distribution creates multiple lever arms that collectively transmit torque, converting a single-point axial connection into a multi-point distributed connection that provides both stability and torque capacity.
2Strength
If multiple screw connections are used to increase torque transmission, then torque absorption capability is improved, but device complexity increases
Solution Approach 1:
The coupling means serve multiple functions simultaneously: they provide mechanical form-fit engagement for torque transmission, act as alignment features during assembly, and distribute mechanical loads across multiple radial points. This multi-functionality reduces the need for separate components for each function, thereby reducing overall device complexity despite the distributed nature of the connection.
Solution Approach 2:
The screw connection function is extracted and differentiated into two types: the central fixing arrangement uses a screw for axial clamping, while the coupling means use rotary stops with form-fit engagement for radial torque transmission. By extracting and separating these functions, the design eliminates the need for multiple identical screw connections, reducing complexity while maintaining torque capacity.
3Ease of operation
If a single central screw is used for attachment, then assembly ease is improved, but torque transmission capability deteriorates
Solution Approach 1:
The system transitions from relying solely on the central axial dimension for both attachment and torque transmission to utilizing the radial dimension through distributed coupling means. The coupling means are positioned at radial distances from the center, creating lever arms that multiply torque transmission capability while the central screw maintains assembly simplicity.
Solution Approach 2:
The fastening system is segmented into a central fixing arrangement for easy attachment and multiple coupling means for torque transmission. This segmentation allows the central screw to focus on simple axial clamping and quick assembly, while the distributed coupling means handle the torque transmission function, with each segment optimized for its specific purpose.
4Strength
If coupling means protrude axially on the free side of the tool disk, then torque transmission is improved, but cut flushness deteriorates
Solution Approach 1:
The coupling means are nested within the tool disk structure through recesses or counterbores that accommodate the coupling elements. This nesting allows the coupling means to extend radially for torque transmission while being contained within the disk's axial boundaries, preventing protrusion that would interfere with flush cutting against surfaces.
Data Source
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AI summary
A tool holder (10) for a disc-shaped tool (18) comprises a tool holding element (14) and a tool holding counter element (16) that can be driven around a working axis (A) and between which the tool (18) can be fixedly mounted. The tool holding element (14) has a central recess (30) through which a central fixing arrangement (26) can pass, and at least one coupling element (44) radially spaced from the central fixing arrangement for at least one through-hole (24) of the tool (18). The at least one coupling element (44) has a rotation stop for a detachable plug connection with the at least one through-hole (24).