Replaceable Cutting Plate Mounting for Precise Drill Alignment
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Solution Overview
Problem
Existing drilling tools with interchangeable cutting inserts face challenges in achieving precise centering and alignment, efficient torque transmission, and easy replacement, particularly under high-performance and industrial production conditions, due to complex fastening mechanisms and manufacturing complexities.
Innovation Solution
The design features parallel centering surfaces orthogonal to the longitudinal axis, creating a prismatic space for complementary fastening, with a locking screw mechanism that secures the insert without penetrating it, allowing for precise alignment and easy replacement without the need for screw removal, ensuring stable torque transmission and high accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex fastening mechanisms are used to secure the cutting insert, then torque transmission and positioning accuracy are improved, but device complexity and handling difficulty increase
Solution Approach 1:
The fastening mechanism is segmented into two independent drivers (first driver with clamping element, second driver with locking element) that perform distinct functions. This segmentation allows each driver to be optimized for its specific task while simplifying the overall replacement process, as each component can be independently adjusted or replaced
Solution Approach 2:
The patent introduces a locking element as an intermediary component that mediates between the cutting insert and the tool body. This locking element provides additional security for torque transmission without requiring complex integrated fastening mechanisms, as it acts as a separate mediating component that can be independently engaged and disengaged
2Manufacturing precision
If complex fastening mechanisms are used to secure the cutting insert, then positioning accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The positioning function is segmented and distributed across multiple reference surfaces: first and second reference surfaces on the cutting insert, and corresponding first and second reference surfaces on the drivers. This segmentation allows for precise positioning through multiple contact points while keeping each individual adjustment simple
Solution Approach 2:
The drivers are pre-configured with clamping and locking elements that are ready to engage with the cutting insert. The reference surfaces are pre-positioned to ensure correct alignment, so that when the cutting insert is placed, the positioning and fastening actions are already prepared, reducing the complexity of the replacement operation
3Strength
If screws penetrate the cutting insert for fastening, then secure connection is achieved, but manufacturing complexity and handling difficulty increase
Solution Approach 1:
The fastening function is extracted from the cutting insert itself and transferred to separate drivers that clamp and lock the insert from the outside. This extraction eliminates the need to create holes or penetrations in the cutting insert, preserving its structural integrity and simplifying its manufacturing process while still achieving strong connection through external clamping and locking mechanisms
Data Source
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AI summary
Described are a drilling tool (1) and a replaceable cutting disk (13) which allow the replaceable cutting disk to be positioned with high accuracy and in a form-locking manner in the drilling tool. At the same time, a cutting disk can be replaced more easily.