Cutting Tool Tip Molding for Precise Intersecting Ridge Formation
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Solution Overview
Problem
Existing methods for manufacturing cutting tool tips using injection molding lack precision in forming intersecting ridge parts, which are critical for the tool's performance, due to uniformity issues in shaping precision.
Innovation Solution
A method involving injection molding where the material is injected through a gate positioned on the inner side of the mold corresponding to the intersecting ridge part, allowing for improved shaping precision by reducing material shift during solidification and maintaining high pressure to ensure accurate formation of the cutting edges and mounting holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If injection molding is used to manufacture cutting tool tips, then productivity is improved compared to traditional pressing methods, but shaping precision of intersecting ridge parts deteriorates due to non-uniform material distribution during solidification
Solution Approach 1:
The gate is positioned on the inner side of the mold corresponding to the intersecting ridge part, which is the opposite of conventional gate placement. This inversion allows material to be injected directly at the critical intersecting ridge location, ensuring high precision shaping of the cutting edge while maintaining the productivity benefits of injection molding.
2Ease of manufacture
If the gate is positioned on side surfaces of the tip for easy material injection, then ease of manufacture is improved, but shaping precision of the intersecting ridge part deteriorates due to material shift during solidification
Solution Approach 1:
Instead of placing the gate on the outer side for ease of injection, the gate is inverted to be positioned on the inner side of the mold at the intersecting ridge location. This resolves the contradiction by making the previously difficult-to-access location the optimal gate position for achieving both ease of manufacture and high precision.
Solution Approach 2:
The gate is specifically positioned at the local region of the intersecting ridge part where high precision is most critical. This localized gate placement ensures that material is injected directly at the cutting edge location, providing local quality enhancement where it is most needed for tool performance.
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 approach enhances the precision of intersecting ridge parts and cutting edges, improving the overall quality and functionality of the cutting tool tips by minimizing material shift and ensuring accurate positioning of the cutting edges and mounting holes.
Implementation Method 1
a shaping step of injecting the material (31) into the mold (33) to thereby form a molded body (35)
Data Source
AI summary
A method for manufacturing a tip for cutting tool use includes a shaping step of injecting a material into a mold to thereby form a molded body which becomes a tip for cutting tool use. The shaping step injects the material into the mold through a gate located on the inner side of a part corresponding to an intersecting ridge part formed by a major surface and an outer peripheral surface of the tip for cutting tool use.