Circular Saw Pin Fixation for Automated Robot Change
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Solution Overview
Problem
Conventional circular saw cutting machines require manual intervention for saw changes, limiting automation and freedom in machine design and plant layout, making nighttime operations challenging without workers.
Innovation Solution
A circular saw cutting machine with a cutter mount mechanism using pins and pin holes to secure the saw without a nut, combined with an articulated robot for automated saw changes, allowing for accurate and efficient saw exchange without manual handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a nut runner, swing arm, and cutter stocker are integrally provided with the circular saw cutting machine to enable automatic saw changes, then the extent of automation is improved, but the device complexity increases and the freedom of machine design and plant layout is limited
Solution Approach 1:
The patent extracts the nut and nut runner from the automatic saw change system, replacing them with a simpler pin-based fixation mechanism. The circular saw has pin insertion holes that align with pins on the spindle, eliminating the need for complex nut running equipment while maintaining secure attachment and enabling automation with an articulated robot alone
Solution Approach 2:
The patent segments the saw change process into independent operations: the articulated robot removes the old saw, positions a new saw, and the pull-in fixing mechanism secures it with pins. This segmentation allows the use of a standard articulated robot rather than a custom-integrated system, reducing overall device complexity
2Ease of operation
If a nut runner is used to remove and attach the spindle nut for saw changes, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent removes the nut and nut runner from the system entirely, replacing them with a pin-based fixation mechanism. The circular saw has pin insertion holes that align with pins on the spindle, eliminating the need for complex nut running equipment while maintaining secure attachment and enabling automation with an articulated robot alone
3Device complexity
If manual intervention is required for saw changes by holding the spindle, then the device complexity is reduced, but the productivity decreases due to time-consuming operations
Solution Approach 1:
The pull-in fixing mechanism automatically secures the circular saw to the spindle through pins that engage with pin holes, eliminating the need for manual holding of the spindle during saw changes. This self-fixing capability enables fast automated operation by an articulated robot, significantly improving productivity
Solution Approach 2:
The circular saw is designed with pin insertion holes positioned to automatically align with the pins on the spindle when the saw is placed on the mounting portion. This preliminary positioning ensures that the pins engage correctly without manual intervention, enabling rapid automated saw changes
Data Source
AI summary
A circular saw cutting machine (1) includes a machine main body (10), an articulated robot (60), and a cutter stocker (70). A circular saw (5) is secured and interposed by a cutter clamp cylinder (CYL21) between a front end face (32) of the main spindle (21) and a cutter presser piece (50) with pins (33, 51) inserted in pin insertion holes (5b). When removing the circular saw (5), a hydraulic is switched over to cause the cutter clamp cylinder (CYL21) to perform unclamping so that the cutter presser piece (50) can be pulled out of the main spindle (21). When the articulated robot (60) performs cutter change, a main spindle motor (M10) and a brake (25) are controlled based on the rotation angle detected by a spindle stop position sensor (SE10) to stop the main spindle (21) in a predetermined home angle condition.