Tool Holder Fixing Structure with Foreign Matter Clearance
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Solution Overview
Problem
Conventional tool holder fixing structures fail to detect foreign matters with 100% precision and require machine tool shutdown for manual removal, leading to decreased capacity utilization and potential machining accuracy issues.
Innovation Solution
A tool holder fixing structure with contact surfaces forming a clearance in specific angular ranges (+30° to −30° and 150° to 210°) to receive foreign matters, reducing their impact on machining accuracy and maintaining tool holder rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tool holder fixing structure is used, then machining work can be performed, but foreign matters cannot be detected with 100% precision and require manual removal causing machine tool shutdown
Solution Approach 1:
The patent applies optical detection to identify foreign matters in the clearance space. The detection device uses light reflection or absorption differences to detect the presence of foreign matters between the tool holder and tool-holder holding part, enabling automatic detection without manual inspection and allowing continuous operation with reduced downtime.
Solution Approach 2:
The clearance space itself acts as an intermediary structure that both receives foreign matters and enables their detection. By designing a specific clearance space between the tool holder and tool-holder holding part, the system creates a detectable region where foreign matters can be identified by the detection device, resolving the contradiction between reliable detection and continuous production.
2Manufacturing precision
If manual removal of foreign matters is implemented, then machining accuracy can be maintained, but machine tool must be stopped frequently reducing capacity utilization
Solution Approach 1:
The patent implements a feedback mechanism where the detection device continuously monitors the clearance space for foreign matters and provides signals to the control device. When foreign matters are detected, the system can automatically alert operators or trigger removal mechanisms, maintaining machining accuracy while minimizing machine tool shutdown time through continuous monitoring and rapid response.
Solution Approach 2:
The system enables self-detection and self-alerting regarding foreign matters in the clearance space. The detection and control devices work autonomously to identify and signal the presence of foreign matters, reducing the need for constant manual monitoring and allowing the system to maintain precision while minimizing production interruptions.
3Manufacturing precision
If clearance space is provided for foreign matters, then impact on machining accuracy is reduced, but contact surface area between tool holder and tool-holder holding part is reduced
Solution Approach 1:
The patent applies local quality by creating a clearance space in specific localized regions where foreign matters are most likely to enter and cause damage, while maintaining full contact surfaces in other critical areas for rigidity. The clearance is strategically positioned to receive foreign matters without compromising the overall structural integrity and rigidity of the tool holder assembly.
Solution Approach 2:
The contact surface between the tool holder and tool-holder holding part is segmented into two functional zones: a clearance space region that receives foreign matters and protects machining accuracy, and a contact surface region that maintains rigidity and structural strength. This segmentation allows the system to simultaneously achieve both protection against foreign matters and maintenance of mechanical strength.
Data Source
AI summary
A tool holder fixing structure is arranged to fix a tool holder for holding a tool attached with a throwaway tip to a tool-holder holding part of a machine tool so that a foreign-matter receiving clearance is provided between the tool holder and the tool-holder holding part. The foreign-matter receiving clearance is defined in a range of +30° to −30° from a cutting-edge position of the throwaway tip assumed as an original point and in a range of 150° to 210° from the original point, respectively.