Surface Shape Measuring Device Weight-Based Parameter Adjustment
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Solution Overview
Problem
The existing surface shape measuring devices face challenges in maintaining precision due to workpiece weight-induced deformation of air bearings and bases, leading to deteriorated rotational accuracy and increased measuring time, especially when handling workpieces of varying weights, which requires manual adjustment of acceleration/deceleration parameters and drive stability angles.
Innovation Solution
A surface shape measuring device equipped with weight detecting devices in the base's legs to automatically correct measurement data and drive parameters based on the workpiece's weight, ensuring accurate detection and reducing operator workload by preventing incorrect parameter settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the acceleration/deceleration parameter and drive stability angle are slowed and widened to accommodate heavy workpieces, then the rotational precision and parallelism are improved, but the measuring time increases
Solution Approach 1:
The patent applies dynamics by making the acceleration/deceleration parameters and drive stability angle adjustable based on workpiece weight. The control unit automatically selects optimal parameters according to the detected workpiece weight, allowing the system to adapt between slow stable rotation for heavy workpieces and faster rotation for light workpieces, thus resolving the contradiction between measurement precision and measuring time
Solution Approach 2:
The patent changes operational parameters (acceleration/deceleration rate and drive stability angle) based on workpiece weight detection. The control unit stores multiple sets of parameters corresponding to different weight ranges and automatically selects the appropriate set, enabling optimal measurement conditions for each workpiece without manual intervention
2Measurement precision
If manual adjustment of correction values and drive parameters is required for different workpiece weights, then the measuring precision can be improved, but the operator workload increases and incorrect settings may occur
Solution Approach 1:
The patent implements self-service by enabling the system to automatically detect workpiece weight and select appropriate correction values and drive parameters without operator intervention. The control unit autonomously matches the detected weight with pre-stored parameter sets, eliminating manual adjustment work and preventing incorrect settings while maintaining measurement precision
Solution Approach 2:
The patent uses feedback from the weight detection device to automatically adjust measurement parameters. The control unit receives weight information, compares it with stored ranges, and automatically selects the corresponding correction values and drive parameters, creating a closed-loop system that eliminates manual intervention and ensures accurate parameter selection
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 enhances measuring precision and reduces measuring time by automatically adjusting parameters according to the workpiece's weight, improving the accuracy of surface shape measurements while maintaining stability across different workpiece weights.
Implementation Method 1
an air bearing which is provided on the base and rotatably supports a body to be rotated
Implementation Method 2
a weight detecting device which detects a weight of the workpiece
Data Source
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AI summary
There is provided a surface shape measuring device and a surface shape measuring method that can easily improve the measuring precision of roundness of a workpiece. The surface shape measuring device includes: a detector configured to detect a displacement of a probe; and a relative movement unit configured to move a workpiece relatively to the detector, the surface shape measuring device configured to measure a surface shape of the workpiece based on a detection result of a displacement of the probe detected by the detector while moving the workpiece relatively to the detector by the relative movement unit in a state where the probe is brought into contact with the workpiece, and the surface shape measuring device further includes a weight detecting device configured to detect a weight of the workpiece.