Table Top Priming Machine Rotary Disk Assembly
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Solution Overview
Problem
Existing priming machines for small caliber ammunition are not efficient, precise, or accessible for individuals with limited space, requiring specialized maintenance and not capable of producing consistent ammunition at high speeds.
Innovation Solution
A table-top priming machine with a rotary disk assembly on a 45° axis, featuring four primary stations for case feed, primer insert, primer staking, and eject, utilizing mechanical cams, vibratory bowls, and spring-loaded mechanisms to facilitate the priming process, allowing for easy assembly and maintenance with general hand tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a rotary disk assembly with four primary stations is used, then productivity is improved (50 rounds per minute), but device complexity increases
Solution Approach 1:
The priming machine is divided into four distinct functional stations (case feed, primer insert, primer staking, and eject) arranged on a rotary disk, allowing each station to perform a specific operation independently while contributing to the overall high-speed priming process
Solution Approach 2:
The rotary disk assembly operates in continuous periodic cycles, rotating through the four stations repeatedly to process cases at high speed (50 rounds per minute), with each rotation completing a full priming cycle
2Ease of operation
If a compact table-top construction is used, then ease of operation is improved (accessible for individuals with limited space), but manufacturing precision may worsen
Solution Approach 1:
The machine incorporates spring-loaded mechanisms and cam-operated arms that provide dynamic, controlled motion for case feeding and primer insertion, ensuring consistent priming depth and orientation despite the compact table-top form factor
Solution Approach 2:
The design allows for adjustable parameters such as primer depth control through the spring-loaded staking mechanism, enabling precise priming results to be achieved and maintained in the compact table-top configuration
3Ease of repair
If standard hand tools are used for assembly and maintenance, then ease of repair is improved, but device complexity increases (requiring more accessible components)
Solution Approach 1:
The machine is constructed with modular components that can be easily separated and reassembled using standard hand tools, with each station and mechanical element designed for independent access and maintenance
Solution Approach 2:
The design enables end users to perform their own assembly and maintenance tasks with common hand tools, eliminating the need for specialized manufacturer tools or expertise while maintaining operational reliability
4Ease of operation
If a 45° axis angle is used for the disk assembly, then ease of operation is improved (gravity assists case installation and ejection), but manufacturing precision may worsen (angular alignment requirements)
Solution Approach 1:
The 45° angled disk assembly is designed to work with gravity as an assisting force, creating a configuration where cases naturally settle into the correct positions during rotation, reducing the need for additional positioning mechanisms while maintaining consistent priming results
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
The machine enables precise and efficient priming of 50 rounds per minute, promoting ease of use and maintenance while accommodating limited space, ensuring consistent ammunition production.
Implementation Method 1
The primer insert station is comprised of a vibratory bowl that feeds a guide down to a separate angled track at a 45° to match the disk angle
Implementation Method 2
The disk assembly axis is at an angle, which allows gravity to assist in keeping the cases installed in the disk between the 3:00 and 9:00 positions and promote ejection of the finished cases from the 8:00 and 6:00 positions
Implementation Method 3
The case feed station is a mechanical cam feed with a return spring that uses grooves on the outside diameter of the rotating disk assembly for timing and actuation
Data Source
AI summary
The herein described Table Top Priming Machine for Small Caliber Ammunition provides a simple, safe, and more precise means to produce reliable ammunition than other priming machines in the prior art. The Table Top Priming Machine uses a unique rotary disk assembly to hold cases as the machine installs primers into the cases. Gravity assists with securing cases in the disk assembly and promotes ejection of the finished cases. The compact construction of the machine makes the machine accessible for individuals or manufactures with limited space to create consistent ammunition at high speeds with limited space. Furthermore, the machine's design allows for any end user to assemble and maintain the machine with general hand tools, which obviates the need for specialized maintenance from the manufacturer.