Detachable Cutting Tool Segment With Resilient Insert Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting tools with detachable cutting inserts face challenges in securely retaining segments without interfering with the retention of cutting inserts, leading to difficulties in mounting and removing inserts while maintaining tool integrity.
Innovation Solution
A cutting tool design featuring segment pockets with specific clamping surfaces and a resilient retention arm that allows for detachable and resilient retention of cutting tool segments, enabling friction fit retention of cutting inserts without screws, and optional locking mechanisms for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cutting inserts are retained in cutting tool elements by a cam mechanism, then the location of cutting inserts is maintained, but the complexity of the device increases and ease of operation for mounting and removing inserts deteriorates
Solution Approach 1:
The invention extracts the retention function for cutting inserts from the cutting tool element structure. Instead of using a cam mechanism within the cutting tool element, the retention is achieved by the resilient retention arm of the cutting tool segment itself, which engages with the cutting insert. This separation simplifies the cutting tool element while maintaining reliable retention.
Solution Approach 2:
The cutting tool segment's resilient retention arm provides self-retention capability for the cutting insert. The arm is resiliently forced toward the segment axis, automatically maintaining engagement with the cutting insert without requiring additional cam mechanisms or complex retention structures. This self-service mechanism simplifies the overall device while ensuring reliable retention.
2Ease of operation
If cutting inserts are retained by interference-fit retention, then mounting and removal is facilitated, but the retention strength may be insufficient under cutting loads
Solution Approach 1:
The invention employs a dynamic resilient retention arm that can flex and adapt to loading conditions. The arm is resiliently forced toward the segment axis, allowing it to dynamically adjust its retention force on the cutting insert. This dynamic capability enables the system to maintain strong retention under cutting loads while still allowing easy mounting and removal when force is applied to overcome the resilient force.
3Reliability
If cutting tool segments are resiliently retained in the tool holder body, then the retention is secure and adaptable, but the device complexity increases
Solution Approach 1:
The resilient retention arm serves multiple functions: it retains the cutting insert, provides adaptable retention force, and enables easy mounting and removal. This multi-functionality is achieved within a simple structural framework where the arm is resiliently forced toward the segment axis. The same basic structure adapts to different cutting inserts and loading conditions without requiring complex mechanisms.
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
This design ensures secure, interference-free retention and easy mounting/removal of cutting inserts, maintaining tool integrity and efficiency during cutting operations by separating retention forces between segments and inserts.
Implementation Method 1
a resilient retention arm (116) formed in the upper end (102) of the cutting tool segment (100), rearwardly spaced apart from the insert retention portion (112), such that when the cutting tool segment (100) is advanced into the segment pocket (154), the retention arm (116) is resiliently forced toward the segment axis
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A cutting tool segment (100) can be detachably mounted in a segment pocket (154) of a cutting tool (150). Each cutting tool segment (100) has a longitudinal segment axis (A) extending in a rearward to forward direction (DF, DR) and upper and lower ends (102, 104), located on opposite sides of the segment axis (A). The lower end (104) has two spaced apart lower abutment surfaces (108, 110). An insert retention portion (112) is formed in the upper end (102), at a forward end (114) of the cutting tool segment (100). A resilient retention arm (116) is formed in the upper end (102), rearwardly spaced apart from the insert retention portion (112). The retention arm (116) has an upper abutment surface (118). In a side view of the cutting tool segment (100), the upper and lower abutment surfaces (118, 108, 110) are linear. A cutting tool (150) comprising at least one such cutting tool segment (100) detachably mounted in a segment pocket (154) formed at the peripheral surface (156) of a tool holder body (152) is also claimed.