Fine Adjustment Thread Assembly for Tilted Grinding Load Sensing
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Solution Overview
Problem
Existing grinding apparatuses face challenges in accurately measuring the load applied to processing tools after tilt adjustments, which affects the uniformity of workpiece thickness due to increased distance between apparatus members with load sensors, making it difficult to maintain precise load measurement.
Innovation Solution
A fine adjustment thread assembly is introduced, featuring first and second external threads with different pitches for threaded engagement with internal threads, allowing for adjustable distance and load detection, incorporating a load sensor under compressive load within a joint portion to maintain accurate load measurement during tilt adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance between apparatus members with the load sensor interposed therebetween is increased to adjust tilt, then the load is less likely to be imposed on the load sensor, but load measurement becomes difficult
Solution Approach 1:
The fine adjustment thread assembly acts as an intermediary mechanism between the apparatus members. It includes a load sensor that directly measures the load applied to the processing tool through the thread structure, independent of the distance between apparatus members. The load sensor is positioned within the thread assembly to directly detect the compressive load, serving as a mediator that transfers the load measurement function from the apparatus members to the thread assembly itself.
2Productivity
If the load on the grindstones is increased to shorten grinding time, then productivity improves, but the tape between the workpiece and holding surface is crushed, affecting manufacturing precision
Solution Approach 1:
The load sensor provides real-time feedback on the load applied to the processing tool. This feedback enables the control system to monitor and regulate the load, ensuring it remains within the optimal range that maintains tape integrity while achieving high productivity. The feedback mechanism allows dynamic adjustment of grinding parameters to prevent tape crushing even at high loads.
3Manufacturing precision
If a tilt adjusting mechanism is used to adjust the degree of parallelism, then manufacturing precision improves, but the distance between apparatus members varies, complicating load measurement
Solution Approach 1:
The tilt adjusting mechanism is segmented from the load measurement function. The fine adjustment thread assembly incorporates the load sensor within its own structure, separating the load measurement function from the apparatus members that undergo tilt adjustment. This segmentation allows the tilt mechanism to operate independently for precision adjustment while the thread assembly independently provides accurate load measurement regardless of position changes.
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 solution enables easy adjustment of the tilt between processing units while ensuring precise load measurement, preventing thickness imperfections in workpieces by maintaining consistent load application during grinding processes.
Implementation Method 1
a load sensor housed in the joint portion under a compressive load
Data Source
AI summary
A fine adjustment thread assembly couples a first part and a second part to each other while keeping the first part and the second part spaced apart, adjusts the distance between the first part and the second part, and detects a load applied to the second part. The assembly includes first external threads that can be brought into threaded engagement with first internal threads formed in the first part, second external threads that are axially spaced from the first external threads, that have a thread pitch different from that of the first internal thread, and that can be brought into threaded engagement with second internal threads formed in the second part. A joint portion between the first external threads and the second external threads houses a load sensor under a compressive load.