Straightness Checking Using Cut-Out Pins and Vibration Detection
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Solution Overview
Problem
Existing methods, such as visual observation of a string's contact state with a pin, are inadequate for accurately checking the straightness of components disposed linearly, like rail axis parts, as they fail to reliably determine the zero touch state, making it difficult to assess the straightness of such apparatuses.
Innovation Solution
A straightness checking method involving pins and cut-out pins with specific side face configurations is used, where pins are placed at edge portions and cut-out pins with cut-outs are positioned between, with the string being fixed to the pins and checked for vibration upon rotation of the cut-out pins to determine if it is in a zero touch state with the uncut side face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual observation method is used to check straightness by determining zero touch state, then the checking process is simple, but the measurement precision is insufficient because it is difficult to visually determine whether the string is in one-point-contact state
Solution Approach 1:
The patent introduces a pin as an intermediary object between the string and the component being measured. The pin serves as a mediator that transforms the难以 visually determined one-point-contact state into a clearly observable contact state, where the string either contacts the pin or does not, providing unambiguous measurement results
Solution Approach 2:
The patent employs visual indication through the pin's contact state with the string. When the string contacts the pin, it creates a visible deviation or mark that can be easily observed, transforming the invisible one-point-contact state into a visible indication state for accurate judgment
2Reliability
If conventional leveling method is used for checking straightness of linearly disposed components, then the method is well-established, but it is not applicable to apparatus configured with plurality of components disposed linearly
Solution Approach 1:
The patent creates a universal straightness checking method that can be applied to various apparatus configured with plurality of components disposed linearly. The method uses standardized pins and strings that can be universally applied to different components (such as rail axis parts) while maintaining measurement reliability, making the technique adaptable to multiple linear component configurations
3Measurement precision
If pin is placed at intermediate portion to check straightness, then the measurement point is provided, but it is difficult to determine whether the string is in zero touch state without clear indication
Solution Approach 1:
The pin acts as an intermediary indicator that provides clear detection of the zero touch state. By placing the pin at the intermediate portion and observing whether the string contacts it, the method transforms the difficult-to-detect zero touch state into an easily observable contact/non-contact state, solving the detection difficulty
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 method allows for effective checking of straightness by observing vibrations when the cut-out pin is rotated, ensuring accurate alignment and high straightness of linearly disposed components, particularly in rail axis systems where an LM guide is present.
Implementation Method 1
rotating the cut-out pin and checking whether or not the line member vibrates due to rotation of the cut-out pin
Data Source
AI summary
A straightness checking method includes the steps of standing a pin at each of both edge portions of linear members of a plurality of linearly-disposed components, and also standing a cut-out pin formed to have a cut-out on a part of a side face thereof, at an intermediate portion between the both edge portions, fixing one end portion and the other end portion of a line member respectively to the pins stood at the both edge portions, bringing into contact with the intermediate portion of the line member an uncut side face part corresponding to a side face without the cut-out formed of the cut-out pin, and rotating the cut-out pin and checking whether or not the line member vibrates due to rotation of the cut-out pin.