Mounting Rail Transition Geometry to Prevent Guide Carriage Wiper Damage
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Solution Overview
Problem
Existing mounting rails for guide carriages on guide rails cause damage to wipers due to edges at the transition points, leading to disruptive movements and potential wiper failure.
Innovation Solution
A mounting rail design with chamfered or angled transitions and spring-loaded deflectable tongues that allow smooth movement of guide carriages onto and off guide rails, preventing wiper damage and ensuring seamless transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a mounting rail with a 90-degree angular transition is used, then the mounting rail can be easily manufactured and assembled, but the guide carriage wipers are damaged when rolling over the sharp edge
Solution Approach 1:
The patent replaces the sharp 90-degree angular transition with a rounded transition edge having a specified radius of curvature. This curved transition eliminates the sharp edge that damages wipers while maintaining the structural integrity and ease of manufacture of the mounting rail. The rounded edge allows smooth passage of guide carriage wipers without concentration of stresses.
2Object-affected harmful factors
If a chamfered transition is used on the mounting rail, then the wipers can move smoothly without damage, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise geometric parameters for the transition edge, including the radius of curvature or chamfer dimensions and angles. By defining these parameters within specific ranges, the invention balances the need for smooth wiper passage with manufacturability. The standardized parameter specifications allow for controlled manufacturing precision without excessive complexity.
3Ease of manufacture
If the mounting rail has a different contour than the guide rail, then assembly is simplified, but the guide carriage cannot be easily moved between the two rails
Solution Approach 1:
The patent employs asymmetric design where the mounting rail has a modified contour relative to the guide rail, with the transition edge specifically shaped to facilitate carriage movement. The asymmetric transition geometry allows the mounting rail to differ from the guide rail contour while maintaining compatibility for guide carriage transfer. The asymmetric rounded edge accommodates the carriage legs and wipers during the transition phase.
Data Source
Figure 1~2
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AI summary
Mounting rail (1) for mounting a guide carriage (2) of a linear guide onto a guide rail (3), having a mounting contour (7) which has side faces (8) formed on mutually averted longitudinal sides of the mounting rail (1) and has a top face (9) situated between the side faces (8) and has bearing faces (10) arranged at the end sides and transversely to the longitudinal axis for bearing against the mounting rail (1). One bearing face (10) has a chamfer (11) at the transition to the side faces (8) and to the top face (9). The other bearing face (10) adjoins the side faces (8) and the top face (9) at an angle of 90 degrees.