Linear Movement Device Omega Drive Carriage Rigidity
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Solution Overview
Problem
The existing linear movement device has a low degree of rigidity due to the carriage's design, which is exacerbated by the long lever arm of the housing, leading to significant deflection movements under external forces.
Innovation Solution
The carriage is redesigned with a single-piece closed tube carriage base body that increases rigidity by eliminating unnecessary breakthroughs and incorporating a continuous bottom plate and helical ducts for attachment, while maintaining the necessary guiding engagement with guide rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the carriage is designed with a single-piece closed tube carriage base body, then the rigidity of the carriage is increased, but the complexity of manufacturing increases
Solution Approach 1:
The patent merges multiple carriage components (carriage plate, housing component, bottom plate, side walls) into a single integrated carriage base body. This unification eliminates the need for separate attachment points and reduces the number of parts, thereby increasing overall rigidity while managing manufacturing complexity through modular design approaches.
Solution Approach 2:
The carriage base body is segmented into functional regions including a continuous bottom plate and side walls, allowing each section to be optimized for its specific function while maintaining overall structural integrity. The bottom plate region is specifically designed to be continuous and free of breakthroughs to maximize rigidity in the longitudinal direction.
2Ease of manufacture
If breakthroughs are made in the carriage base body for mounting deflection roller and drive roller, then the ease of manufacture is improved, but the rigidity of the carriage is reduced
Solution Approach 1:
The patent applies local quality by making the bottom plate continuous and free of breakthroughs in critical rigidity zones, while still providing mounting capabilities for rollers through alternative means such as side wall attachments or localized features that do not compromise the overall structural integrity of the bottom plate.
3Productivity
If the housing forms a long lever arm to extend the working range, then the productivity is improved, but the stability of the housing increases deflection movements under external forces
Solution Approach 1:
The enhanced rigidity of the carriage base body acts as a counterbalancing factor that compensates for the instability introduced by the long lever arm of the housing. By making the carriage structure inherently stiffer through the single-piece closed tube design, the system can tolerate the increased deflection moments without compromising overall stability.
Data Source
AI summary
A linear movement device has a housing and a carriage which can move in a longitudinal direction with respect to the housing, wherein the housing extends with an essentially constant U-shaped cross-sectional shape in the longitudinal direction, with the result that the housing bounds a guide cavity, wherein the guide cavity is covered with a toothed belt which extends in the longitudinal direction, wherein the toothed belt is attached at both ends to the housing with the result that said toothed belt defines a toothed belt plane, wherein at least one separate guide rail which extends in the longitudinal direction is arranged within the guide cavity, on which guide rail at least one separate guiding carriage is mounted in a longitudinally movable fashion, which guiding carriage is permanently connected to the carriage, wherein a first and a second deflection wheel, which deflect the toothed belt out of the toothed belt plane, are rotatably attached to the carriage, wherein a rotatable drive wheel, which is in drive-transmitting engagement with the toothed belt, is arranged between the first and the second deflection wheels. The carriage has a single-piece carriage base body which extends in the longitudinal direction, wherein said carriage base body is embodied as a closed tube essentially over its entire length, with the result that it bounds a carriage cavity, wherein the guiding carriage is attached to the outside of the carriage base body, preferably directly to the outside of the carriage base body, wherein the toothed belt is guided through the carriage cavity, and wherein the first and second deflection wheels and the drive wheel are arranged within the carriage cavity.