Lock Ring Assembly with Notched Threads for Precision Die Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ammunition cartridge reloading methods lack the ability to make precise adjustments to die settings, requiring trial and error due to the lack of controlled, measured increments, which can lead to inefficiency and potential safety issues.
Innovation Solution
A lock ring assembly with a ball detent and notched thread system that provides audible or tactile feedback, allowing for precise adjustments in increments such as 0.001″, enabling controlled and accurate die adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional threading adjustment method is used, then the die can be adjusted, but the adjustment precision is insufficient and requires trial and error
Solution Approach 1:
The lock ring assembly is divided into an outer portion with notched threads and an inner portion with ball detents. The notched threads segment the adjustment path into discrete, measurable increments, allowing the user to advance the die by precise amounts (e.g., 0.001") with each click, eliminating the need for trial and error adjustments.
Solution Approach 2:
The ball detent mechanism provides audible and tactile feedback through clicking sounds and resistance changes at each notched position. This feedback confirms to the user the exact increment of adjustment being made, enabling precise control of die positioning without guesswork or multiple attempts.
2Manufacturing precision
If traditional lock ring is used, then the die position can be secured, but fine measured adjustments cannot be made
Solution Approach 1:
The lock ring assembly transitions from a static locking mechanism to a dynamic adjustment system. The outer portion can be rotated to engage different notched positions, allowing the die position to be dynamically adjusted in precise increments while maintaining security at each positioned setting through the ball detent locking action.
Solution Approach 2:
The notched threads are pre-configured with specific increment markings and spacing before use. This preliminary preparation of measurement references allows the user to directly achieve the desired precision without requiring skill development or iterative adjustment, making fine positioning accessible to all users immediately.
3Reliability
If trial and error method is used for die adjustment, then adjustment can eventually be achieved, but efficiency and safety are compromised
Solution Approach 1:
The traditional mechanical trial-and-error adjustment system is replaced with a precision measurement system based on notched threads and ball detents. This substitution transforms the adjustment process from an iterative mechanical guessing game to a controlled, measurable operation, simultaneously improving safety through precision and efficiency through reduced adjustment time.
Data Source
AI summary
Devices and methods facilitate a precise, measured amount of adjustment to a die used for the reloading of ammunition cartridges. A lock ring assembly and notched threads generate audible or tactile user feedback, preferably in the form of “clicks” as the lock ring advances by a precise, predetermined amount axially relative to a die body. The lock ring assembly may be a unified structure, wherein the entire lock ring assembly turns as a unit. In this embodiment, one or more ball detents in the lock ring assembly interact with notched threads on a proprietary die body. Alternatively, the lock ring assembly may be a two-part assembly that can be used with existing threaded dies with continuous un-notched threads. The die body, whether notched or not, may be used in any reloading application in standard presses, including cartridge sizing, crimping, bullet seating, or case mouth belling.