Lens Alignment Test Fixture with Adjustable Limiting Block
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Solution Overview
Problem
Existing test fixtures lack precise control over the positioning of products, such as lenses, due to inadequate mechanisms for fine-tuning the alignment of the product's center.
Innovation Solution
The test fixture incorporates an adjustable structure comprising a limiting block, locking blocks, and fixing members, which allows for precise adjustment and locking of the limiting block's position on the base, enabling fine-tuning of the product's alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a screw on the cover is used to position the product, then the product can be positioned, but loosening and tightening of the screw cannot be well controlled to fine-tune the position of the product
Solution Approach 1:
The positioning mechanism is segmented into multiple independent components: a movable table for fine positioning, a locking mechanism with blocking pieces for securing positions, and a screw mechanism for driving movement. This segmentation allows the screw to provide coarse adjustment while the movable table provides fine-tuning capability, resolving the contradiction between positioning precision and adjustability.
Solution Approach 2:
The table is designed to be movable rather than fixed, allowing it to be positioned and locked at different locations. The locking mechanism dynamically transitions between locked and unlocked states, enabling both stable positioning and flexible adjustment. This dynamic design resolves the contradiction by providing both precision (when locked) and adjustability (when unlocked).
Data Source
AI summary
A test fixture includes a base and an adjustable structure. The adjustable structure includes a limiting block, a locking block, and a fixing member. The limiting block is disposed on the base. The locking block is disposed on the base and abuts an edge of the limiting block to lock the limiting block in position. The fixing member is disposed on the limiting block to fix the limiting block on the base. When the locking block is moved from a first position to a second position, the locking block unlocks the limiting block, the fixing member is loosened, and the limiting block can rotate on the base. After the limiting block is rotated, the locking block is moved from the second position to the first position to lock the limiting block, and the fixing member is tightened to fix the limiting block on the base.