Electromagnetic Rod Clamping Tool for Precise Small-Diameter Machining
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Solution Overview
Problem
Current machining systems for rods are energy-inefficient, bulky, and lack precision, particularly when dealing with small diameters, due to reliance on pneumatic or hydraulic systems that require fluid leakage and frequent part replacement, limiting angular speed and machining precision.
Innovation Solution
A compact electrical driving tool with a first and second stator, rotor, and elastically deformable hollow driving element that adjusts internal diameter to clamp or release rods, using electromagnetic fields for rotation and reducing energy consumption, allowing for faster and more precise machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If pneumatic or hydraulic systems are used to clamp and drive rods, then clamping force is sufficient, but energy consumption increases due to fluid leakage and system bulk
Solution Approach 1:
The patent replaces pneumatic or hydraulic systems with an electromagnetic clutch system. The electromagnetic clutch uses magnetic fields to engage and disengage the clamping mechanism, eliminating the need for compressed air or pressurized hydraulic fluid. This substitution reduces energy consumption by eliminating fluid leakage while maintaining sufficient clamping force through electromagnetic attraction between the clutch members.
Solution Approach 2:
The invention extracts and eliminates the fluid management system (pneumatic or hydraulic components) from the clamping mechanism. By removing the need for circulating fluids, seals, and fluid treatment systems, the patent reduces both energy consumption and system complexity while maintaining the essential clamping function through the electromagnetic clutch.
2Force
If pneumatic or hydraulic systems are used, then clamping capability is achieved, but device size increases and precision decreases
Solution Approach 1:
The patent replaces bulky pneumatic or hydraulic systems with a compact electromagnetic clutch assembly. The electromagnetic clutch consists of magnetically attractable members that can be engaged or disengaged by applying or removing a magnetic field, eliminating the need for fluid reservoirs, pumps, valves, and extensive piping. This results in a significantly more compact device with fewer moving parts and reduced overall system size.
Solution Approach 2:
The invention discards the complex fluid management infrastructure (reservoirs, pumps, filters, treatment systems) and recovers only the essential clamping function through a simplified electromagnetic mechanism. This elimination of unnecessary components reduces device complexity while maintaining clamping capability.
3Device complexity
If electromagnetic clutch systems are used, then compactness is achieved, but adaptation to free rods without mechanical connexion means is difficult
Solution Approach 1:
The patent segments the electromagnetic clutch into a stationary member and a rotatable member, each with independent functional characteristics. The stationary member can be fixed to the rod or rod holder, while the rotatable member engages with the rod's surface. This segmentation allows the clutch to adapt to free rods without requiring pre-installed mechanical connection means, as the electromagnetic fields can interact with the rod material directly or through simple contact surfaces.
Solution Approach 2:
The electromagnetic clutch design provides multi-functionality by enabling both clamping and rotational driving functions through a single integrated system. The same electromagnetic fields that provide clamping force can also transmit rotational motion to the rod, eliminating the need for separate mechanical connection means and enhancing adaptability to various rod configurations.
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 solution enables efficient, precise, and cost-effective machining of small-diameter rods with reduced energy consumption and increased angular speed, improving machining precision and reducing the need for fluid management and part replacement.
Implementation Method 1
The rotation of the rotors is generated by electrical power, using electromagnetic fields
Implementation Method 2
The driving element is an elastically deformable, hollow element, the diameter of which can be modified according to the relative angular position of its first and second ends
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention is directed to a driving tool (1) for driving a rod (R) in rotation, comprising two stators (10, 20), two rotors (11, 21), two connexion means (12, 22) and a driving element (3) connected to the two connection means (12, 22), wherein the driving element (3) is elastically deformable, and wherein the relative angular position of the two rotors can be modulated. The present invention also covers a machine (M) comprising such a driving tool (1) as well as a method of machining a rod (R) using the same.