One-Piece Fragmentation Projectile With Forged Breaking Points
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Solution Overview
Problem
Existing fragmentation projectiles are effective but challenging to manufacture, requiring complex processes and increasing production costs.
Innovation Solution
A one-piece fragmentation projectile with a cylindrical section and a frustoconical section, featuring predetermined breaking points and material weaknesses on the lateral surface, allowing for simpler production using a single forging machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex multi-step manufacturing processes are used to produce fragmentation projectiles, then manufacturing precision and reliability are improved, but device complexity and production costs increase
Solution Approach 1:
The patent combines multiple manufacturing operations into a single forging process. The one-piece construction is formed in one step using a single forging machine, integrating what would traditionally require multiple steps and operations into one unified process, thereby reducing device complexity while maintaining manufacturing precision
Solution Approach 2:
The forging process incorporates preliminary formation of breaking points and segment structures during the initial shaping phase. The material is pre-positioned and pre-formed with the necessary geometric features (incisions, breaking points) integrated into the forging die, eliminating the need for subsequent separate operations to create these features
2Manufacturing precision
If multiple manufacturing steps are used to create fragmentation projectiles, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
Multiple manufacturing operations are merged into a single forging cycle. The projectile body, segments, and breaking points are all formed simultaneously in one continuous process, eliminating the time losses associated with multiple setup changes and sequential operations, thereby significantly improving productivity
Solution Approach 2:
The forging process maintains continuous useful action throughout the manufacturing cycle. The single-step forging operation eliminates idle time between operations, keeping the manufacturing system continuously productive from raw material input to finished projectile output, maximizing throughput and productivity
3Manufacturing precision
If traditional multi-step processes are used for fragmentation projectile production, then manufacturing precision is maintained, but ease of manufacture deteriorates
Solution Approach 1:
The patent simplifies ease of manufacture by consolidating multiple complex steps into one straightforward forging operation. The single-step process reduces the skill level and operational complexity required, making the manufacturing process easier to execute while the integrated die design ensures manufacturing precision is maintained
Solution Approach 2:
The forging process is designed to be self-contained, with all necessary features (segments, breaking points, geometric shapes) created automatically by the forging die itself. The process requires minimal external intervention or additional machining steps, making it easier to manufacture while maintaining precision through the precision-engineered die
Data Source
Figure 1~3
AI summary
The invention relates to a fragmentation projectile with a one-piece construction, which has a cylindrical section (1) and a substantially frustoconical section (2), at the end of which the projectile tip (3) is located and in which at least one predetermined breaking point is formed, wherein the frustoconical section (2) is divided into segments (4.1, 4.2, 4.3, 4.4) and has a channel (5) which has an opening (6) in the region of the projectile tip (3), wherein the channel (7) has a bell-shaped extension (8) which has its largest diameter in the region of the transition from the cylindrical section (1) to the frustoconical section (2).