Cutter Holder Prism Cavity Asymmetric Clamping
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Solution Overview
Problem
Existing cutter holders and base elements in cutting devices have large dimensional tolerances, resulting in an inadequate form-fitting connection, which affects the carrying capacity and stability of the tool.
Innovation Solution
The cutter holder features a prism-shaped cavity with a cavity contour that follows the profile of the base element, enhancing the form-fitting connection and providing spring-elastic properties, allowing for improved clamping and stress distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cutter holder and base element are produced as forged parts in the customary manner, then the manufacturing process is simple and cost-effective, but large dimensional tolerances result in an inadequate form-fitting connection
Solution Approach 1:
The invention divides the connection interface into two separate components: the cavity in the cutter holder and the protrusion on the base element. By segmenting the connection system, each component can be manufactured with optimized tolerances for its specific function, improving the overall form-fitting connection while maintaining simple forging processes for both parts.
Solution Approach 2:
The invention applies different quality requirements to different regions of the cutter holder. The cavity is designed with specific geometric features (prism shape with angled surfaces) that require higher precision only where they contact the base element, while other regions can maintain standard forging tolerances. This localized precision approach improves the connection without significantly increasing manufacturing complexity.
2Manufacturing precision
If the cavity has a simple geometric shape, then the manufacturing is easier, but the form-fitting connection and carrying capacity are insufficient
Solution Approach 1:
The invention employs asymmetric geometry in the cavity design, with angled surfaces (e.g., 45 degrees) that do not conform to simple symmetric shapes. This asymmetric configuration optimizes the form-fitting connection with the base element protrusion, increasing carrying capacity from 40% to 70%, while the asymmetry is achieved through standard forging and machining operations rather than complex multi-step processes.
Solution Approach 2:
The invention transitions from a simple one-dimensional or two-dimensional cavity shape to a three-dimensional prism-shaped cavity with multiple angled surfaces. This dimensional complexity improves the form-fitting connection by creating multiple contact surfaces between the cavity and protrusion, thereby increasing the carrying capacity without requiring excessively complex manufacturing procedures.
3Strength
If the cutter holder uses a conventional connection design, then the structure is simple, but the carrying capacity is limited to approximately 40%
Solution Approach 1:
The invention incorporates preliminary action by designing the cavity with pre-formed angled surfaces and geometric features that are created during the forging and machining process itself, rather than requiring additional assembly steps or fasteners. The cavity geometry is prepared in advance to receive and securely hold the base element protrusion, achieving 70% carrying capacity through the inherent structure rather than through complex external connection 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 increases the carrying capacity by 40% to 70% and prevents premature stress rupture, enhancing the stability and service life of the cutter holder.
Implementation Method 1
the formation of spring-elastic properties of the two lateral limbs directed at an angle to each other, as the result of which the cutter holder can be clamped on the machine holder
Data Source
AI summary
A cutter holder has two limbs extending at an angle to each other. A cutter is mounted on one side of the cutter holder. An opposite side of the cutter holder has a prism-shaped cavity defined thereon. The cavity has a V-shape cross-section having a recessed groove at a base of the V-shape. A center line of the recessed groove is laterally offset from a center line of the cutter holder.