Machine Tool Axial Positioning During Imaging Magnification Changes
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Solution Overview
Problem
In machine tools, when the imaging magnification is changed, the tool or workpiece can become framed out, leading to inefficiencies as operators must manually adjust the axial position to recenter it within the image, disrupting the workflow.
Innovation Solution
A machine tool system that includes a motor for axial movement, an imaging device for capturing images at specified magnifications, a display unit for image display, a command position calculating unit to maintain relative positional relationships between the tool or workpiece and the imaging center, and a motor control unit to adjust the tool or workpiece based on calculated movement commands, ensuring it remains within the image frame even when magnification changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the imaging magnification is increased to confirm the tool tip or machined surface, then the imaging precision is improved, but the tool may become framed out and fall outside the image frame
Solution Approach 1:
The system continuously monitors the position of the tool or workpiece in the captured image and uses this feedback to automatically adjust the axial position. The command position calculating unit computes the required movement based on the current position and imaging magnification, creating a closed-loop control system that maintains the specified point within the image frame.
Solution Approach 2:
The system performs automatic axial movement adjustment without requiring manual intervention from the operator. The motor control unit executes the calculated movement commands autonomously, allowing the system to self-correct when the tool approaches the image frame boundaries.
2Reliability
If manual axial feeding operation is performed to keep the tool within the image frame, then the tool visibility is maintained, but the operation efficiency deteriorates
Solution Approach 1:
The system performs automatic axial movement adjustment without requiring manual intervention from the operator. The motor control unit executes the calculated movement commands autonomously, allowing the system to self-correct when the tool approaches the image frame boundaries.
Solution Approach 2:
The command position calculating unit acts as an intermediary between the imaging system and the motor control unit. It processes the imaging magnification information and current position data to generate appropriate movement commands, bridging the gap between detection and actuation.
3Stability of the object's composition
If the tool position is adjusted to maintain it within the image frame, then the relative positional relationship is maintained, but additional control mechanisms are required
Solution Approach 1:
The command position calculating unit performs multiple functions: it calculates the movement command position based on imaging magnification changes, determines the required axial movement distance, and outputs commands to the motor control unit. This multi-functional approach reduces the need for separate specialized components.
Solution Approach 2:
The system combines the imaging device, position calculation unit, and motor control into an integrated control system. The command position calculating unit merges the processing of imaging magnification data and position data to generate unified movement commands, reducing overall system complexity.
Data Source
AI summary
A machine tool, which carries out machining on a workpiece using a tool, is equipped with a servo motor configured to cause axial movement of the tool, an imaging device configured to capture an image of the tool at a specified imaging magnification, a display unit configured to display the image captured by the imaging device, a command position calculating unit configured to, in the case that the imaging magnification is changed, calculate a movement command position of the tool on the basis of the imaging magnification before and after having been changed, so as to maintain a relative positional relationship between a specified point of the tool in the image, and an imaging center position in the image before and after the change in the imaging magnification, and a motor control unit configured to control the servo motor on the basis of the movement command position.