Component Mounting Machine Hardness-Based Collision Speed Control
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Solution Overview
Problem
Existing component mounting machines do not adequately consider the hardness characteristics of the nozzle, board, or component when determining collision speed, leading to inconsistent peak loads during component mounting.
Innovation Solution
The component mounting machine incorporates a load detector to measure hardness characteristics by controlling the component holding tool's contact with the board, allowing for precise determination of the appropriate collision speed based on detected load information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If collision speed is controlled based on measured impact force data, then impact force can be regulated, but hardness characteristics are not considered leading to inaccurate speed determination
Solution Approach 1:
The system performs preliminary measurement of hardness characteristics by controlling the component holding tool to contact the board at a predetermined low speed before actual mounting. This preliminary action obtains hardness data that is then used to determine appropriate collision speeds for subsequent high-speed mounting operations, resolving the contradiction by separating measurement from operation.
Solution Approach 2:
The system changes the speed parameter from predetermined low speed (for measurement) to determined collision speed (for mounting) based on measured hardness characteristics. This parameter change allows the system to accurately regulate impact force by adjusting collision speed according to actual hardness data, resolving the inconsistency in speed determination.
2Productivity
If collision speed is increased for higher productivity, then mounting efficiency improves, but impact force increases causing potential damage
Solution Approach 1:
The system uses feedback from hardness characteristic measurements to dynamically determine appropriate collision speeds. By measuring hardness at low speed and using this data to calculate safe collision speeds for high-speed mounting, the system enables high productivity while preventing excessive impact force through continuous feedback-based speed adjustment.
Solution Approach 2:
The system transitions from static predetermined speed settings to dynamic speed determination based on real-time hardness measurements. The collision speed is dynamically adjusted according to measured hardness characteristics, allowing the system to optimize productivity for each specific mounting condition while preventing damage from excessive force.
3Measurement precision
If predetermined low speed is used for hardness measurement, then measurement accuracy improves, but measurement time increases
Solution Approach 1:
The system uses partial action by measuring hardness characteristics only at selected positions on the board rather than进行全面 measurement. This partial measurement approach maintains sufficient accuracy for determining collision speeds while significantly reducing measurement time compared to comprehensive measurement.
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
This approach ensures that the collision speed is optimally set to prevent damage, allowing for accurate hardness characterization and appropriate nozzle lowering speeds, thereby enhancing the precision and efficiency of the mounting process.
Implementation Method 1
the speed with which a component collides with the top surface of a board is controlled to suppress the impact force
Data Source
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AI summary
There is provided a component mounting machine including: a component supply device configured to supply a component; a board holding device configured to hold a board; a head configured to hold a component holding tool so as to be capable of lifting and lowering; a load detector configured to detect a load applied to the component holding tool; a head moving device configured to move the head between the component supply device and the board holding device; and a control device configured to obtain hardness characteristics when the component holding tool comes into contact with the board, based on load information detected by the load detector when the head is controlled such that the component holding tool comes into contact with the board.