Linear Motor Stator Integration for Precision Assembly
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Solution Overview
Problem
The existing linear motor assembly process is complicated by the need to secure the housing to the stator module through welding or curving, which affects the accuracy and precision of the motor due to positioning difficulties.
Innovation Solution
A linear motor design featuring a stator module with integrated holder members and bobbins, where the rotor module is rotatably mounted, and an extension rod with threaded connections simplifies assembly by eliminating the need for additional fixing means between the holder members and bobbins, ensuring precise alignment and reduced assembly time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the housing is secured to the stator module through welding or curving the front plate, then the linear motor can be assembled, but the manufacturing process becomes complicated and positioning accuracy deteriorates
Solution Approach 1:
The patent integrates the housing and stator module into a single integrated structure, eliminating the need for separate assembly operations such as welding or curving the front plate. This merging of components simplifies the manufacturing process and ensures precise positioning since the housing is formed as part of the stator module itself, removing the positioning accuracy issues associated with separate assembly operations.
2Stability of the object's composition
If the front plate is welded or curved to secure the housing, then the housing can be fixed in position, but the positioning accuracy and manufacturing precision deteriorate
Solution Approach 1:
By integrating the housing as part of the stator module structure, the patent ensures stable housing positioning without requiring welding or curving operations. The housing position is determined by the integral structure itself, eliminating cumulative tolerance and positioning accuracy problems that arise from separate assembly operations.
3Adaptability or versatility
If multiple separate components are used in the stator assembly, then the structure can be modular, but the number of parts increases and assembly complexity increases
Solution Approach 1:
The patent combines the housing and stator module into a single integrated component, reducing the total number of parts while maintaining structural functionality. This integration eliminates the need for separate assembly operations and reduces cumulative tolerance, while the modular design of the overall linear motor is preserved through other means such as the separable rotor module and stator module assembly.
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 design simplifies the assembly process, enhances precision, and reduces cumulative tolerance, resulting in a more efficient and accurate linear motor manufacturing process.
Implementation Method 1
The first winding is wound round the upper bobbin. The second winding is wound round the bottom bobbin. The rotor module is rotatably mounted in the stator module. The rotor module comprises a rotor body, and at least one magnet mounted around the rotor body. The magnet faces toward the first and second windings.
Data Source
AI summary
A linear motor (1) includes a stator module (10), a rotor module (20) and an extension rod (30). The stator module (10) includes a first stator unit (11) and a second stator unit (12). The first stator unit (11) includes an upper end cap (111) including an upper holder member (1111) and an upper bobbin (1112) integrally extended from the upper holder member (1111). The second stator unit (12) includes a bottom end cap (121) and a second winding (122). The bottom end cap (121) includes a bottom holder member (1211) and a bottom bobbin (1212) connected to the bottom holder member (1211) and abutted against the upper bobbin (1112). The rotor module (20) is rotatably mounted in the stator module (10). The extension rod (30) is linearly movably mounted in the stator module (10). The upper bobbin (1112) is integrally extended from the upper holder member (1111). The fabrication of the linear motor (1) is simple, ensuring a high level of precision.