Rotary Drive Ammunition Reloading with Variable Stroke Speed
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Solution Overview
Problem
Conventional rotary drive ammunition reloading systems lack granular control over stroke speed at different positions within the stroke cycle, limiting their ability to effectively manage the reloading process.
Innovation Solution
An automated ammunition reloading system with a motor and power transmission assembly that includes a controller communicatively coupled with press position sensors, allowing for differential speed control through an eccentric assembly or cam assembly, and sensors to detect reloading component states and errors, enabling precise speed adjustments and error detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional rotary drive with constant rotation is used, then the reloading system can operate continuously, but the stroke speed cannot be controlled at different positions within the stroke cycle
Solution Approach 1:
The patent applies dynamics by transitioning from a static constant-speed rotary drive to a dynamic variable-speed drive. The motor speed is continuously adjusted during the stroke cycle based on feedback from position sensors, allowing the system to optimize stroke speed at different positions while maintaining overall operational continuity.
Solution Approach 2:
The patent implements feedback control by using position sensors to detect the press position within the stroke cycle and feeding this information back to the controller. The controller then adjusts the motor speed accordingly, enabling precise control of stroke speed at different positions through a closed-loop control system.
2Manufacturing precision
If constant stroke speed is used throughout the cycle, then the system is simpler to operate, but manufacturing precision of ammunition components decreases
Solution Approach 1:
The system dynamically adjusts stroke speed during the cycle, operating at lower speeds during precision-critical phases (such as powder dispensing and bullet seating) and at higher speeds during less critical phases (such as case indexing and primer installation), thereby optimizing both precision and productivity.
Solution Approach 2:
The patent applies periodic action by varying the stroke speed in a periodic manner throughout the stroke cycle. The controller implements speed variations at specific intervals corresponding to different operational phases, allowing precision work during slow phases and rapid transitions during fast phases.
3Productivity
If the motor runs at full speed continuously, then productivity is maximized, but control precision over the reloading process is reduced
Solution Approach 1:
The feedback mechanism continuously monitors press position with high precision using position sensors, allowing the controller to accurately determine the stroke phase regardless of motor speed variations. This enables precise control and measurement even when the motor operates at variable speeds to optimize productivity.
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
Enables more precise control over the reloading process, preventing errors and ensuring accurate assembly of ammunition components by allowing differential speed adjustments during the stroke cycle, thereby improving the efficiency and accuracy of ammunition reloading.
Implementation Method 1
The power transmission assembly operatively couples to the eccentric assembly
Implementation Method 2
The ammunition reloading system may further include a cam assembly configured to provide differential press speed during press operation through the press stroke
Data Source
AI summary
An ammunition reloading system is configured to be operatively coupled with an ammunition reloading press to enable automated operation of the press. The reloading system includes a motor and a power transmission assembly that enables rotational power in a single direction from the motor to drive the ammunition reloading press. A controller is communicatively coupled to the motor and to one or more press position sensors to determine a position of the press within a press stroke cycle and increase or decrease the speed of the motor accordingly.