Torque Motor Milling Head Eliminates Gearbox Play
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Solution Overview
Problem
Existing gear cutting machines lack a stable and robust milling head capable of handling large, rotationally symmetrical parts effectively, particularly in producing gears with high rigidity and precision.
Innovation Solution
A milling head design featuring a torque motor-driven milling head block with a recess and bearings, providing direct connection to the torque motor without a gearbox, and a clamping disk to manage forces, ensuring high stability and robustness for machining large components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional milling head with gearbox transmission is used, then the device complexity is reduced, but the manufacturing precision and stability deteriorate due to play and flexibility in the transmission chain
Solution Approach 1:
The patent removes the gearbox transmission component from the milling head, extracting the source of play and flexibility. The torque motor is directly coupled to the milling spindle without any intermediate gear transmission, eliminating the problematic elements that cause machining inaccuracies while maintaining a manageable structural complexity through this simplification.
Solution Approach 2:
The patent merges the torque motor and milling spindle into a directly coupled integrated unit, combining the drive function and milling function into one unified structure. This merging eliminates the transmission chain and its associated play, achieving high machining precision while the overall structure remains manageable through functional integration.
2Reliability
If a milling head with gearbox transmission is used, then the device complexity is reduced, but the reliability deteriorates due to play in the transmission chain under high forces
Solution Approach 1:
The patent extracts the gearbox transmission that causes play and unreliability under load. By removing this intermediate transmission component and implementing direct coupling between the torque motor and milling spindle, the system achieves high reliability and stability when subjected to high cutting forces, while the structural complexity is managed through this elimination approach.
Solution Approach 2:
The patent combines the torque motor and milling spindle into a directly coupled unified structure, merging the drive and execution functions. This integration eliminates the play-prone transmission chain, ensuring reliable and stable operation under high forces, while the overall structure remains manageable through functional consolidation.
3Productivity
If a milling head with traditional drive is used, then the device complexity is reduced, but the productivity deteriorates due to inability to provide high torque at low speeds
Solution Approach 1:
The patent replaces the traditional mechanical gearbox transmission system with a torque motor that provides direct electromagnetic drive. This substitution enables the milling head to deliver high torque at low speeds directly through the motor's electromagnetic field, achieving superior cutting performance and productivity while the structural complexity is managed through this modern drive technology.
4Manufacturing precision
If a milling head without direct connection is used, then the device complexity is reduced, but the manufacturing precision deteriorates due to play and flexibility in the transmission chain
Solution Approach 1:
The patent takes out the intermediate transmission connection that introduces play and flexibility. By implementing direct coupling between the torque motor and milling spindle, the system achieves high machining accuracy with minimal structural complexity, as the direct connection eliminates the need for complex transmission components.
Solution Approach 2:
The patent merges the torque motor and milling spindle into a directly coupled integrated unit, combining drive and milling functions. This merging achieves high machining precision by eliminating transmission play, while the overall structure remains manageable through functional integration and simplification.
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
This configuration allows for high torque application at low speeds, enabling high cutting performance and precision in producing internal and external gears on large components, with reduced risk of deformation and increased machining accuracy.
Implementation Method 1
a torque motor (6), which can directly and directly drive the milling drive shaft (20)
Implementation Method 2
a first bearing (18) in the rear bearing seat (23) and a second bearing (19) in the front bearing seat (24), in which the milling drive shaft (20) is rotatably mounted
Data Source
Figure 1
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AI summary
The invention relates to a milling head (5), in particular for a gear cutting machine (1), such as for example an internal or external gear cutting machine, and also relates to a milling device and a method, comprising a milling head block (11) and a torque motor (6), wherein the milling head block (11) has a clearance (21), in which there is arranged a milling drive shaft (20), which is connected to the torque motor (6) and can be driven by the torque motor (6), and wherein the milling head block (11) has at least one rear bearing seat (23) and one front bearing seat (24) and also a first bearing (18) and a second bearing (19), wherein the first bearing (18) is arranged in the rear bearing seat (23) and the second bearing (19) is arranged in the front bearing seat (24) and wherein the milling drive shaft (20) is rotatably mounted in the first bearing (18) and the second bearing (19).