Linear Motion Guide Ball Channel Noise Reduction
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Solution Overview
Problem
Conventional linear motion guide devices often have misaligned or improperly formed ball guiding channels, leading to potential strikes and significant noise generation as the ball bearing device moves through the apparatus.
Innovation Solution
The design incorporates a guide rail with longitudinal grooves, a slider with concave and longitudinal grooves, and end caps with turnarounds and plates that form an improved ball guiding channel, featuring notches, recesses, and inclined surfaces to prevent strikes and reduce noise by ensuring smooth sliding of the ball bearing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the slide block and end caps are attached together to form the ball guiding channel, then the linear motion guide apparatus can be assembled, but gaps or protruded angles are formed between the components causing the ball bearing device to strike and generate noise
Solution Approach 1:
The ball guiding channel is pre-formed as an integrated structure on the slide block before assembly with end caps. The channel includes pre-formed transition sections at the ends that guide balls smoothly into the channel, preventing strikes against protruded angles that would occur with post-assembly channel formation.
Solution Approach 2:
The ball guiding channel is divided into multiple sections: a straight section in the middle portion of the slide block, and transition sections at the end portions. Each section serves a specific function in guiding balls smoothly through the assembly, with the transition sections specifically designed to eliminate strikes at the joints between slide block and end caps.
2Device complexity
If conventional ball guiding channels are used, then the structure is simple, but the ball bearing device strikes onto protruded angles generating great noises
Solution Approach 1:
The transition sections are pre-formed as integral parts of the ball guiding channel structure on the slide block. These transition sections include smoothly curved surfaces that guide balls into the channel at appropriate angles, preventing strikes against protruded angles at the joints between components.
Solution Approach 2:
The geometry of the ball guiding channel is modified by adding transition sections with specific curved surface parameters. These transition sections change the angle and curvature of the ball path, transforming the motion from a direct impact trajectory to a smooth guided trajectory that eliminates striking noises.
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 configuration effectively prevents the ball bearing device from striking the guide apparatus, reducing noise and ensuring smooth operation by forming a precise and stable ball guiding channel.
Implementation Method 1
a ball bearing device disposed between the slider and the guide rail for facilitating the sliding movement between the slider and the guide rail
Implementation Method 2
for facilitating the sliding movement between the slider and the guide rail and for allowing the slider and the guide rail to be smoothly moved relative to each other
Data Source
AI summary
A linear motion guide device includes a slider slidably attached onto a guide rail and each having one or more longitudinal grooves for forming a ball guiding channel between the slider and the guide rail, and two end caps attached to the ends of the slider, the slider includes two end portions each having two notches communicating with the longitudinal grooves, and two plates are disposed between the slider and the end caps and each include two or more ears engaged into the notches of the slider for anchoring the plates to the slider and each ear having an inclined surface for reducing the noises that may be generated by the movement of the ball bearing device.