Clamping Device for Cutting Insert with Central Support
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Solution Overview
Problem
Existing clamping devices for cutting inserts in precision mechanical processing apply non-uniform force, leading to frequent breaks, poor surface finish, and structural weakening of the tool-bearing head, causing interruptions and increased maintenance.
Innovation Solution
A tool assembly with a clamping device featuring a first clamping element centrally positioned within the cutting insert and a second clamping element that exerts pressure on the first, ensuring uniform force distribution and preventing inclination, thus enhancing the rigidity of the cutting insert's association with the tool-bearing head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping bracket exerts pressure on one end of the cutting insert, then the cutting insert is clamped inside the seating, but the force is not uniformly distributed causing the working top to be raised and leading to frequent breaks and poor surface finish
Solution Approach 1:
The clamping device is divided into two separate clamping elements: a first clamping element that applies force at the center of the cutting insert, and a second clamping element that applies force at the rear end. This segmentation allows each element to apply force at specific locations, achieving uniform force distribution and preventing the working top from being raised, thereby improving both reliability and surface finish quality.
2Reliability
If a lever is used to clamp the cutting insert from below, then the attachment is consolidated, but the non-uniform force distribution still causes the working top to be raised and the tool-bearing head is structurally weakened
Solution Approach 1:
The clamping function is segmented between two elements: the first clamping element provides central support through the cutting insert, while the second clamping element provides rear support from the tool-bearing head. This segmentation achieves stable attachment consolidation without requiring a lever mechanism that would create non-uniform force distribution and structural weakening.
Solution Approach 2:
The first clamping element acts as an intermediary between the tool-bearing head and the cutting insert, transmitting force uniformly through the center of the insert. This intermediary mechanism eliminates the need for direct lever-to-insert contact that would cause structural weakening of the tool-bearing head.
3Reliability
If a combination of two clamping devices is used, then the disadvantages are partly reduced, but manufacturing costs increase
Solution Approach 1:
The invention merges the functions of two separate clamping devices into a single integrated clamping device with two clamping elements. This merging achieves the reliability benefits of dual clamping (uniform force distribution, stable attachment) while eliminating the need for separate devices, thereby reducing manufacturing complexity and production costs.
Solution Approach 2:
The single clamping device with two clamping elements performs multiple functions: it provides central support, rear support, uniform force distribution, and stable attachment consolidation. This multi-functionality replaces what would otherwise require multiple separate devices, reducing manufacturing costs while maintaining high reliability.
Data Source
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Figure 3~4
AI summary
Clamping device to mechanically clamp a detachable tool (11) on a tool-bearing head (12). The tool-bearing head (12) comprises a support seating (13) in which the detachable tool (11) is able to be disposed. The detachable tool is provided with a through hole (15) disposed substantially in a symmetric position with respect to the center of the detachable tool (11). The clamping device comprises a first clamping element (18), able to be inserted in the through hole (15) and in a mating first cavity (19) made in the tool-bearing head (12), aligned with the through hole (15) and substantially orthogonal to the support seating (13), and a second clamping element (20), able to be inserted in a mating second cavity (21), made in the tool-bearing head (12), communicating with the first cavity (19).