Integrated Spindle Motor Shaft for Angular Travel
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Solution Overview
Problem
Spindle moulders have limited angular travel capabilities and are structurally complex, requiring frequent maintenance due to belt drive replacements, leading to increased downtimes and costs.
Innovation Solution
The spindle moulder design integrates the spindle shaft and motor shaft as a single unit, with a simplified structure and the elimination of belt drives, allowing for greater angular travel and reduced maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a belt drive is used to connect the motor shaft and spindle shaft, then the structure is simpler to manufacture, but the reliability decreases due to frequent belt replacement and maintenance
Solution Approach 1:
The patent merges the motor shaft and spindle shaft into a single integrated shaft assembly, eliminating the belt drive connection. This direct coupling removes the belt and its associated maintenance requirements, thereby improving reliability while maintaining manufacturing simplicity through the unified structure.
2Device complexity
If the spindle shaft and motor shaft are connected by a belt drive, then the device complexity is reduced, but the productivity decreases due to machine downtimes for belt replacement
Solution Approach 1:
By integrating the motor shaft and spindle shaft into a single unit, the patent eliminates the belt drive system. This merger reduces device complexity by removing unnecessary components while simultaneously improving productivity by eliminating downtime associated with belt replacement and maintenance.
3Ease of manufacture
If the spindle shaft and motor shaft are positioned laterally with parallel axes, then the ease of manufacture is improved, but the angular travel capability is limited
Solution Approach 1:
The patent implements a dynamic configuration where the integrated shaft assembly can rotate about a vertical axis, enabling angular travel. This dynamic positioning capability allows the spindle to achieve various angular positions while maintaining the manufacturing simplicity of the integrated shaft design, thereby resolving the contradiction between ease of manufacture and angular travel capability.
Data Source
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AI summary
A spindle moulder comprises spindle shaft means (4), extending along a rotation axis (Z1), and arranged for rotationally supporting a milling tool (2) and motor shaft means (14, 18, 30, 31) for rotating said spindle shaft means (4), characterised in that said spindle shaft means (4) and said motor shaft means (14, 18, 30, 31) have in common said rotation axis (Z1).