Rotary Encoder Mounting for Eccentricity and Tilt Alignment

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Solution Overview

Problem

Adjusting the relative positions of the equipment's rotating shaft, rotor, and stator in a rotary encoder is time-consuming, especially when performed by skilled operators on large equipment or at on-site installations, and requires quick and accurate alignment.

Innovation Solution

A mounting method and support device that utilize a position adjustment mechanism and detection heads to calculate and display the eccentricity, tilt, and direction of the rotor and stator relative to the device rotation axis, allowing for precise alignment without manual expertise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual adjustment of rotor and stator positions is performed by skilled operators, then alignment precision can be achieved, but the adjustment process becomes time-consuming and complex

Engineering Contradiction:

Improvealignment precisionVSAvoidadjustment time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The system enables self-service alignment by having the rotor and stator automatically generate and transmit their position data to a terminal device. The alignment process no longer requires skilled operators to manually measure and calculate positions, as the components themselves provide the necessary data for automatic positioning adjustment.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical measurement and calculation with an automated information processing system. Position data is automatically collected, transmitted, and processed by a terminal device to calculate adjustment values, eliminating the need for manual surveying and complex calculations that would otherwise be required.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If manual measurement and calculation of rotor and stator positions is performed, then accurate alignment can be achieved, but the process becomes complex and time-consuming

Engineering Contradiction:

Improveposition measurement accuracyVSAvoidadjustment process complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The rotor and stator automatically generate and transmit their own position data to the terminal device, eliminating the need for manual measurement operations. This self-service approach simplifies the overall process by removing complex manual surveying and calculation steps while maintaining high measurement precision through automated data collection.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent substitutes manual mechanical measurement and complex calculation processes with an automated information processing system. The terminal device automatically receives position data, performs calculations, and determines adjustment values, replacing what would otherwise require skilled operators to manually measure, calculate, and coordinate multiple adjustment operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If skilled operators perform adjustment work, then alignment accuracy can be maintained, but productivity decreases due to time consumption

Engineering Contradiction:

Improvealignment accuracyVSAvoidinstallation efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The system enables the rotor and stator to self-report their positions and facilitate their own alignment through automated data transmission and processing. This eliminates the need for skilled operators to manually survey, calculate, and coordinate adjustments, thereby maintaining high alignment accuracy while significantly improving installation efficiency and productivity.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual operator-based alignment processes with an automated terminal device that collects position data, calculates adjustment values, and guides the alignment process. This substitution eliminates time-consuming manual operations while maintaining alignment accuracy, thereby improving productivity without sacrificing precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260029258A1Mounting method of rotary encoder, computer-readable non-transitory medium, and mounting support device of rotary encoder

Publication Date: 2026.01.29 MITUTOYO CORP

AI summary

A mounting includes rotating the rotor and acquiring an amount of eccentricity, an eccentric direction, an amount of tilt, and a direction of tilt of the rotor with respect to a device rotation axis, an amount of eccentricity, an eccentric direction, an amount of tilt, and a direction of tilt of the stator with respect to the device rotation axis, based on the detection value detected by the detection head provided on the stator, moving the stator with respect to the device rotation axis so that the amount of eccentric of the stator is within the allowable range, and moving the stator so that the distance between the stator and the rotor at a position where the rotor is attached to the device body, and the amount of tilt and the direction of tilt with respect to the device rotation axis are within the allowable range.