Servo Motor Mechanical Origin Adjustment via Reference Counter
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Solution Overview
Problem
Existing methods for adjusting the mechanical origin in machines with moving parts driven by servo motors are cumbersome, time-consuming, and skill-dependent, often requiring manual operation and extended periods for accurate positioning.
Innovation Solution
A method involving a position detector-equipped machine with a reference counter that calculates the adjustment amount based on the position detector's value and counter capacity, allowing for automated and efficient setting of the mechanical origin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment method using one-rotation signal of pulse coder is used, then measurement precision of mechanical origin position is improved, but loss of time and productivity deteriorate due to skill-dependent and time-consuming operations
Solution Approach 1:
The patent replaces manual mechanical adjustment operations with an automated calculation system. The control unit automatically calculates the adjustment amount by processing signals from the position detector and reference counter, substituting the skilled manual operation with an automated computational process that eliminates skill dependency and reduces time consumption.
Solution Approach 2:
The system performs self-adjustment through automated calculation. The control unit independently determines the adjustment amount by processing position detector data and reference counter information without requiring external manual intervention, enabling the system to self-correct the mechanical origin position automatically.
2Measurement precision
If manual adjustment method is used, then measurement precision of mechanical origin position is improved, but device complexity increases due to skill-dependent operations
Solution Approach 1:
The patent replaces complex manual adjustment procedures with a simplified automated calculation system. The control unit processes position detector and reference counter signals through automatic calculation, transforming a skill-dependent complex mechanical process into a straightforward automated computational task that reduces operational complexity.
Solution Approach 2:
The control unit acts as an intermediary that automatically processes information between the position detector/reference counter and the mechanical origin setting. This intermediary automatically calculates the adjustment amount, eliminating the need for skilled manual intervention and simplifying the overall adjustment process.
3Productivity
If automated calculation method using position detector and reference counter is used, then productivity is improved by reducing adjustment time, but measurement precision may deteriorate
Solution Approach 1:
The system uses feedback from the position detector and reference counter to automatically calculate the adjustment amount. The control unit continuously monitors the position information and reference counter data, processes this feedback information through calculation, and determines the precise adjustment amount, thereby maintaining measurement precision while achieving automated high-speed adjustment.
Solution Approach 2:
The patent replaces manual measurement and adjustment operations with automated calculation based on position detector and reference counter data. This substitution maintains precision by using accurate sensor data and systematic calculation rather than manual estimation, while simultaneously achieving high productivity through automation.
Data Source
AI summary
A machine having a function for adjusting the position of mechanical origin of a moving part (10) that is driven by a servo motor equipped with a position detector, comprising a reference counter (16) for counting the value detected by the position detector, a storage unit (17) for storing the capacity of the reference counter of when the moving part is moved in a predetermined direction and is positioned at the position of mechanical origin, a reference counter reading unit (18) for reading the value of the reference counter of when the moving part is positioned, a counter capacity reading unit (19) for reading the counter capacity of the reference counter, and an adjustment amount calculation unit (20) for calculating the amount of adjusting the position of mechanical origin based on the value of the reference counter and on the capacity of the reference counter.