Dual-Threaded Tool Actuation for Precise Axial and Rotary Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cutting systems lack precise and rapid control over cutting tools, which affects the efficiency and consistency of cutting operations on various materials.
Innovation Solution
A cutting system comprising a first and second motor, a cutting tool with helical threadings, and a controller that coordinates the speed and direction of the motors to achieve desired axial and rotational movements of the cutting tool, enabling precise and rapid control through a method involving simultaneous rotation of opposing helical threadings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single motor is used to control the cutting tool, then the device complexity is reduced, but the precision and speed of control deteriorate
Solution Approach 1:
The control system is segmented into two independent motors (first motor and second motor), each controlling one helical threading. This segmentation allows independent control of axial and rotational movements, achieving precise control while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The dual-motor system with opposing helical threadings provides multi-functionality: it can independently control axial movement, rotational movement, and combinations thereof. This universal control capability achieves high precision without requiring separate mechanisms for each movement type
2Productivity
If traditional single-motor control is used, then the device structure is simpler, but the cutting speed and efficiency deteriorate
Solution Approach 1:
The controller dynamically adjusts the speed and direction of both motors independently to achieve desired cutting patterns. This dynamic control enables rapid response and high cutting speed by optimizing motor operation in real-time based on cutting requirements
Solution Approach 2:
The system employs periodic alternating rotation of the two motors in opposite directions, creating efficient reciprocating cutting motion. This periodic action pattern increases cutting speed and productivity while maintaining controlled system complexity through rhythmic operation cycles
3Manufacturing precision
If opposing helical threadings are used, then the control precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The system uses asymmetric opposing helical threadings with different helical directions (one right-handed, one left-handed). This asymmetric design enables precise control of both axial and rotational movements through the natural mechanical advantage of helical geometry, achieving high precision while the threadings can be manufactured using standard helical machining processes
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 system enables precise and efficient cutting by allowing for controlled axial and rotational movements of the cutting tool, improving the consistency and speed of cutting operations, particularly suitable for materials like paper, fabric, wood, and metal.
Implementation Method 1
a first motor operable to rotate a first threading extending in a first helical direction around an axis; a second motor operable to rotate a second threading axially spaced apart from the first threading and extending in a second helical direction opposite the first helical direction around the axis
Implementation Method 2
a cutting tool (drill) comprising a shaft having a first mating threading extending in the first helical direction configured to mate with the first threading, and a second mating threading extending in the second helical direction configured to mate with the second threading
Data Source
Figure 1~2
Figure 3
AI summary
Actuators, systems, and methods for controlling tools are disclosed. One actuator includes a first motor, a second motor, and a controller. The first motor is operable to rotate a first threading extending in a first helical direction around an axis. The second motor is operable to rotate a second threading axially spaced apart from the first threading and extending in a second helical direction opposite the first helical direction around the axis. The controller is in communication with the first and second motors. The controller is configured to control speed and direction of the first and second motors to effect a desired pattern of axial and rotational movement of the tool. One method includes rotating the first threading in a first rotational direction, and simultaneously, rotating the second threading in a second rotational direction opposite the first direction.