Toroidal Tool Holder With Radial Supports for Thick Tube Cutting
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Solution Overview
Problem
Existing tool-holder units are limited in processing thick tubes, as they can only effectively cut tubes with a maximum thickness of 3-4 mm, requiring separate machinery for thicker tubes, which complicates in-line processing.
Innovation Solution
A tool-holder unit with radially movable tool supports and a motorized system that includes a toroidal support-holder body, gearmotors, and fluid-actuated radial movement means, allowing for adjustable tool positioning and pressure control to process and cut tubes up to 25 mm thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional tool-holder units are used with fixed tool supports, then the structure is simple and easy to manufacture, but the tube thickness is limited to 3-4 mm maximum
Solution Approach 1:
The tool supports are made movable rather than fixed, allowing radial translation along the tube axis. This dynamic capability enables the same tool-holder unit to process tubes of varying thicknesses (from thin to thick tubes up to 25 mm) by adjusting the radial position of tools, thereby resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The tool-holder unit is designed to perform multiple functions: it can process both thin tubes (3-4 mm) and thick tubes (up to 25 mm) using the same equipment. The universal design eliminates the need for separate cutting machines for different tube thicknesses, achieving versatility without proportionally increasing complexity.
2Productivity
If tube processing is performed in-line with drawing or extrusion processes, then productivity is improved, but thick tubes cannot be processed and require separate cutting machines
Solution Approach 1:
The tool-holder unit is designed as a universal processing system that maintains in-line processing capability while expanding thickness capability. By making tool supports radially movable, the same in-line unit can handle both thin and thick tubes, eliminating the need for separate cutting machines and maintaining high productivity across different tube specifications.
3Force
If tools are pressed against the tube surface with high force to cut thick tubes, then cutting capability is improved, but motor stalling occurs
Solution Approach 1:
The control system monitors motor current and dynamically adjusts tool support radial position based on feedback. When cutting thick tubes requiring high force, the system detects increased current and automatically repositions tool supports to optimize the cutting geometry, preventing motor stalling while maintaining sufficient cutting force for thick tube processing.
4Adaptability or versatility
If tool supports are made movable to process thick tubes, then tube thickness capability is improved, but device complexity increases
Solution Approach 1:
The radial movement of tool supports is achieved through pneumatic or hydraulic actuators rather than complex mechanical transmission systems. This approach provides smooth, controlled radial translation with simple actuation, expanding tube thickness capability while minimizing the increase in device complexity compared to pure mechanical solutions.
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
Enables efficient cutting of thick tubes by allowing tools to translate radially and rotate, reducing cycle time and preventing motor stalling, while maintaining cleanliness by cutting through thickness only, thus overcoming the limitations of previous units.
Implementation Method 1
fluid-actuated radial movement means
Data Source
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AI summary
A tool-holder unit for processing a tube comprises at least two tool supports (10), each of which rotatably supports a tool shaft (12) on which a tool (14) for processing the tube is suitable for being mounted so that the tool (14) processes the side surface of the tube. The tool supports (10) are mounted on a support-holder body (16) having a toroidal shape. At least one of the tool supports (10) is supported by the support-holder body (16) by means of radial movement means, which are operable for moving the tool support so that the respective tool (14) translates radially with respect to the tube to be processed. A transmission system is suitable for transferring the rotation of the support-holder body (16), driven by a motor apparatus, to the tool shafts (12) so as to obtain a motorized rotation of the tools during the processing.