Dual-Spindle Chuck Vibration Detection During Work Transfer
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Solution Overview
Problem
Machine tools face accuracy issues during machining due to abnormalities like chip biting during the fastening operation from the first chuck to the second chuck, compromising product quality.
Innovation Solution
A machine tool with a first spindle, a second spindle, a controller, and a detector that synchronizes the rotation of both spindles during the fastening operation, using vibration measurement data from sensors to detect abnormalities and adjust machining conditions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the second chuck performs a fastening operation for fastening the work to the second spindle, then the work can be transferred and processed, but abnormalities such as chip biting may occur that compromise machining accuracy
Solution Approach 1:
The vibration detection is performed during the fastening operation itself, before the tool contacts the workpiece. This preliminary detection allows the system to identify abnormalities like chip biting in the second chuck before they affect machining accuracy, enabling preventive action to be taken
2Reliability
If vibration detection is performed during the fastening operation, then abnormalities can be detected, but the detection must be precisely timed between chuck contact and tool contact
Solution Approach 1:
The system uses real-time vibration feedback from the chucks during the fastening operation. The detector continuously monitors vibration levels and provides feedback to determine whether an abnormality has occurred, allowing for reliable detection based on actual operational conditions rather than predetermined timing
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
Effectively detects and addresses abnormalities during the fastening operation, ensuring continuous and accurate machining by preventing accuracy loss due to issues like chip biting.
Implementation Method 1
a detector configured to detect an abnormality caused by the fastening operation by the second chuck, based on measurement data associated with a vibration of at least one of the first chuck and the second chuck
Data Source
Figure 1
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AI summary
A machine tool (1) includes: a front spindle (10) having a front chuck (12); a rear spindle (20) having a rear chuck (22); a controller (50) configured to cause the rear chuck (22) to perform a fastening operation for fastening a work (W) fastened to the front chuck (12) to the rear chuck (22); and a detector (60) configured to detect an abnormality caused by the fastening operation by the rear chuck (22), based on measurement data associated with a vibration of at least one of the front chuck (12) and the rear chuck (22).