Soft Collision Grating Scale Buffering Mechanism
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Solution Overview
Problem
Conventional grating scales face issues with pin breakage and imprecise measurements due to forced collisions and inertial movement, limiting their precision and operational efficiency.
Innovation Solution
A soft collision grating scale with a buffering mechanism and synchronized movement of the pin and auxiliary scale, using photoelectric members and counters for precise distance calculation, replaces forced collisions with soft collisions, preventing pin breakage and enhancing measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pin and sliding auxiliary scale move synchronically with forced collision, then the measurement operation can be completed, but the pin structure breaks easily and measurement precision deteriorates
Solution Approach 1:
The patent applies beforehand cushioning by introducing a buffering mechanism (spring or rubber buffer) between the moving pin and the stopping face. This buffer absorbs the collision impact before it reaches the pin structure, preventing breakage while maintaining the measurement function. The buffer is pre-installed in the positioning hole to cushion the forced collision that occurs during measurement operation.
2Measurement precision
If the pin collides with the stopping face, then the measurement can be obtained, but the sliding auxiliary scale inertially moves backward causing imprecise measurement
Solution Approach 1:
The buffering mechanism cushions the collision between the pin and stopping face, reducing the impact force that causes inertial backward movement of the sliding auxiliary scale. This beforehand cushioning prevents the harmful inertial effect while preserving the measurement capability.
Solution Approach 2:
The buffer acts as an intermediary element between the pin and the stopping face. Instead of direct contact causing inertial movement, the buffer mediates the collision, absorbing the shock and preventing the sliding auxiliary scale from moving backward inertially, thereby improving measurement precision.
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
The soft collision mechanism extends the lifespan of the grating scale, allows for precise and accurate measurements by avoiding pin breakage and inertial errors, and enhances automation through data processing for improved measurement convenience.
Implementation Method 1
a buffering mechanism is provided to cooperate with the moving pin
Data Source
AI summary
A soft collision grating scale and measuring method thereof comprises a fixed scale, a sliding auxiliary scale slidably disposed relative to the fixed scale, and a moving pin sliding relative to the sliding auxiliary scale. The moving pin and the sliding auxiliary scale move synchronically. A buffering mechanism is disposed on the moving pin. When the moving pin sliding relative to the sliding auxiliary scale cooperates with a buffering force of the buffering mechanism, a collision between the moving pin and stopping faces of an inspected target is automatically offset to attain a soft collision effect, which prevents the moving pin from breaking to keep an normal measurement operation and increases the precision of measurement by the fact that the sliding auxiliary scale does not rebound and an offset distance caused by reversely moving the moving pin relative to the sliding auxiliary scale can be computed.