Linear Servo Belt Drive Using Electromagnetic Field Indexing
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Solution Overview
Problem
Rotary servo-controlled drive systems face limitations in acceleration and deceleration rates due to mechanical friction, leading to reduced indexing capabilities and increased wear in belt and pulley components.
Innovation Solution
A servo-controlled linear movement drive system utilizing electromagnetic coils and permanent magnets to generate a drive electromagnetic field, allowing for linear movement without mechanical contact, thus reducing friction and wear, and enabling high-speed indexing with precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a rotatory servo controlled drive system with mechanical transmission is used, then power transmission is achieved, but mechanical friction increases and limits acceleration and deceleration rates
Solution Approach 1:
The patent replaces the mechanical transmission system (gears, sprockets, belts) with an electromagnetic drive system consisting of electromagnetic coils and permanent magnets. The coils generate a magnetic field that interacts with the permanent magnets to produce linear force, eliminating mechanical contact and friction while enabling high acceleration and deceleration rates without compromising power transmission capability
2Power
If mechanical transmission components are used, then power transmission is achieved, but wear of belt and pulley increases
Solution Approach 1:
The patent eliminates mechanical transmission components (belts, pulleys, gears) that cause wear by substituting them with an electromagnetic field-based drive system. The electromagnetic coils generate a magnetic field that acts on permanent magnets mounted on the belt, producing force without physical contact, thereby completely eliminating wear of transmission components and improving system reliability
3Force
If mechanical friction contact is used for power transmission, then force transmission is achieved, but the mass of transmission mechanism increases
Solution Approach 1:
The patent replaces heavy mechanical transmission mechanisms with a lightweight electromagnetic drive system. The electromagnetic coils and permanent magnets generate and transmit force through magnetic fields without requiring massive mechanical components, significantly reducing the mass of the transmission mechanism while maintaining effective force transmission capability
Solution Approach 2:
The patent extracts and eliminates the heavy mechanical transmission mechanism from the drive system, retaining only the essential electromagnetic components (coils and permanent magnets) needed for force generation and transmission. This extraction removes unnecessary mass while preserving the core function of force 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 system achieves high-speed indexing with reduced wear and increased accuracy by eliminating mechanical contact, allowing for faster acceleration and deceleration without the limitations of traditional mechanical methods.
Implementation Method 1
The control unit is coupled to the coils of the drive apparatus, such that a common drive electromagnetic field can be generated by means of the coils
Implementation Method 2
the drive electromagnetic field that can be generated by the coils acts on the permanent magnets... such that a drive force is generated which acts on the drive apparatus and on the belt
Data Source
Figure 1~2
Figure 3~4
Figure 5a~5f
AI summary
The present invention relates to a servo controlled linear movement drive system (2). The servo controlled linear movement drive system (2) has a drive apparatus (4), a belt (6), and a control unit (8) for controlling the drive apparatus (4), the drive system (2) being de- signed to perform a linear relative movement between the drive apparatus (4) and a belt drive section (10) of the belt in a reference direction, the drive apparatus (4) having multi- ple electromagnetic coils (12) which are arranged one behind the other in a reference direc- tion, the belt (6) having a base material (14), composed in particular of rubber material or polyurethane, the belt (6) having multiple permanent magnets (16) which are embedded into the base material (14) of the belt drive section (10) one behind the other, in particular so as to be spaced apart from one another, in the reference direction, the control unit (8) being coupled to the coils (12) of the drive apparatus (4) such that a common drive elec- tromagnetic field can be generated by means of the coils (12), the drive apparatus (4) and the belt drive section (10) being arranged relative to one another such that the drive elec- tromagnetic field that can be generated by the coils (12) acts on the permanent magnets (16), and the control unit (8) being designed to activate the coils (12) so as to displace the drive electromagnetic field in the reference direction, such that a drive force is generated which acts on the drive apparatus (4) and on the belt (6) in or opposite to the reference di- rection (36), thus effecting the relative movement.