Integrated Thread-Forming Tool Holders for Fast Changeover
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Solution Overview
Problem
Existing machining systems for forming threads in workpieces require multiple tools and complex retooling processes, especially when dealing with varying dimensions and shapes in sheet metal processing, which complicates efficient and economic production.
Innovation Solution
A machining system with a housing and rotatably and displaceably mounted tool holders, integrated with both linear and rotary drives, allowing for flexible adaptation to different thread dimensions and easy integration into processing systems, enabling tool-free assembly and disassembly for improved interchangeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple different punching and threading tools are used for processing sheets with varying dimensions and shapes, then the ability to handle diverse workpiece requirements is improved, but the device complexity and retooling requirements increase
Solution Approach 1:
The patent implements a universal tool holder system that can accommodate multiple different punching and threading tools through a standardized interface. The tool holder is designed with a universal mounting mechanism that allows quick changeover between different tool types and sizes, enabling a single device to perform multiple functions without requiring complex retooling of the entire machining system
Solution Approach 2:
The patent employs dynamically adjustable tool holders that can be quickly positioned and secured in different orientations and locations within the machining device. The tool holders feature adjustable mounting positions and angular orientations, allowing the system to adapt to various workpiece geometries and thread requirements without permanent modifications or complex retooling
2Device complexity
If a single common drive device is used to actuate multiple thread forming tools, then the device complexity is reduced, but the ability to independently control each tool's linear and rotary movements is limited
Solution Approach 1:
The patent segments the drive system into modular units, where each tool holder is equipped with its own integrated linear drive and rotary drive mechanisms. This segmentation allows each tool to be independently controlled while maintaining a relatively simple overall device structure. The modular drive units can be selectively activated based on which tool is currently mounted and required
Solution Approach 2:
The patent combines the linear and rotary drive functions into integrated drive units that are directly coupled to each tool holder. This merging of functions within each modular unit simplifies the overall drive system architecture while preserving the ability to independently control each tool's linear and rotary movements through selective activation of the appropriate drive unit
3Ease of operation
If tool holders are designed for quick interchangeability without tools, then the ease of operation is improved, but the reliability of tool positioning and alignment may be compromised
Solution Approach 1:
The patent replaces traditional mechanical tool retaining mechanisms (such as set screws, keys, or complex locking devices) with a magnetic field-based retention system. The tool holders incorporate magnetic elements that securely hold the cutting tools through magnetic attraction, allowing for rapid tool changes by simply approaching and detaching the tool without requiring manual fastening or alignment procedures. The magnetic field ensures reliable positioning and alignment while enabling quick interchangeability
Data Source
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AI summary
A device (44) for forming a thread in a workpiece has a housing and a plurality of tool receptacles (2) which are rotatably and displaceably mounted in or on the housing for a respective thread-forming tool, wherein a linear drive and a rotary drive for the tool receptacles (2) are integrated into the housing.