Internal Torque Motor for Milling Machine Whirling Unit
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Solution Overview
Problem
Existing external whirling devices face limitations due to large and complex drive motor designs, which restrict swiveling angles and suffer from wear-related torque losses in belt drives, necessitating a more compact and efficient drive solution.
Innovation Solution
Integration of an internal rotor electromagnetic torque motor directly within the whirling unit, eliminating the need for external motors and belt drives, allowing for a compact design with enhanced torque and speed capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional electric motor with belt drive is used, then the motor can provide high torque, but the device becomes large and complex with limited swiveling angles
Solution Approach 1:
The patent combines the motor and receptacle into a single integrated unit where the motor rotor is directly coupled to the receptacle. This merging eliminates the need for separate belt drives and transmission components, reducing device complexity while maintaining torque capability through direct electromagnetic coupling.
Solution Approach 2:
The patent replaces the mechanical belt drive system with an electromagnetic direct-drive system. The motor's electromagnetic field directly drives the receptacle without mechanical intermediaries, eliminating wear-related torque losses and simplifying the overall drive mechanism.
2Ease of operation
If a belt drive system is used to transmit torque, then the motor can be positioned separately, but wear and tear results in torque loss and reduced performance
Solution Approach 1:
The patent eliminates the mechanical belt drive system and replaces it with a direct electromagnetic coupling between the motor rotor and the receptacle. This substitution removes the source of wear and torque loss, as there are no friction-based mechanical intermediaries in the power transmission path.
Solution Approach 2:
The patent introduces the electromagnetic field as an intermediary between the motor and the receptacle. This field-based coupling transmits torque without physical contact or mechanical wear, eliminating the torque losses associated with belt friction and slippage.
3Power
If the motor is arranged on the side of the whirling unit, then the drive can be provided, but the swiveling angle is limited due to the motor's position
Solution Approach 1:
By merging the motor and receptacle into a single integrated unit with the rotor directly coupled to the receptacle, the patent eliminates the need for lateral motor mounting. This integration allows the whirling unit to be positioned closer to the workpiece center, enabling larger swiveling angles and improved adaptability while maintaining full power capability.
4Force
If transmission or bevel gears are used to couple the motor to the receptacle, then torque can be transmitted, but the design becomes very complex
Solution Approach 1:
The patent replaces complex mechanical transmission systems (transmission gears or bevel gears) with a direct electromagnetic drive system. The motor rotor is directly coupled to the receptacle, eliminating the need for intermediate gear mechanisms and significantly simplifying the overall design while maintaining effective torque transmission.
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 compact design enables larger swiveling angles, reduced maintenance, and improved cooling options while significantly increasing torque and speed transmission without wear-related losses.
Implementation Method 1
an electromagnetic torque motor of the internal rotor type is provided as the drive device
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The device comprises a stationary outer part (5) and a revolving inner element (6) holding a whirling ring (7). The u-shaped outer element (5) is attached to an aggregate carrying element (9) joined to the housing. The torque applying drive (13) is integrated in the thread whirling device and comprises a stator (14) accommodated inside the space (16) between the arms of the U (5). The rotor (17) is positioned opposite and connected to the inner element (6) with a double-row slide bearing (18).