Cutting Machine Slide Acceleration Control
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Solution Overview
Problem
Existing machines for continuous-cycle cutting of metal tubes experience non-optimized acceleration and deceleration in the return phase, leading to mechanical stresses and wear on moving parts, reducing the reliability of the cutting machine.
Innovation Solution
A machine with a processing unit that calculates and controls the speed and acceleration of the cutting slide to reduce the maximum absolute value of acceleration and deceleration in the return phase, using input parameters like usable slide stroke, maximum acceleration, maximum speed, cutting length, and cutting time to generate a driving signal for the cutting slide, ensuring a more gradual acceleration trend.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutting slide uses high acceleration and deceleration values in the return phase to maintain cutting cycle efficiency, then productivity is improved, but mechanical stresses increase causing wear and reducing reliability
Solution Approach 1:
The patent applies dynamics by making the acceleration and deceleration values variable rather than constant. The control unit dynamically adjusts the return phase acceleration and deceleration based on the cutting phase parameters, allowing optimization of both productivity and reliability through adaptive motion control that responds to real-time cutting conditions
Solution Approach 2:
The patent changes the motion parameters by establishing mathematical relationships between cutting phase and return phase parameters. The control unit modifies acceleration and deceleration values during the return phase based on calculated relationships with cutting phase values, transforming fixed parameters into variable ones that optimize both productivity and mechanical stress reduction
2Productivity
If the cutting slide uses high acceleration values during the forward phase to reach cutting position quickly, then productivity is improved, but this creates mechanical stresses that reduce machine lifespan
Solution Approach 1:
The patent applies asymmetry by creating different acceleration and deceleration profiles for the forward phase versus the return phase. The control unit calculates return phase parameters based on cutting phase parameters, establishing an asymmetric motion pattern where each phase has optimized characteristics rather than using identical symmetric acceleration values throughout the cycle
Solution Approach 2:
The patent makes the motion characteristics dynamic by continuously adjusting acceleration and deceleration values based on the specific cutting requirements. The control unit dynamically determines return phase parameters as functions of cutting phase parameters, allowing the system to adapt to varying cutting conditions while maintaining optimal productivity and machine lifespan
Data Source
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AI summary
A machine (50) for cutting a moving object (10) comprises conveyor means (1) for carrying the object along an advancement direction (X) at a line speed (VI) and comprises a driving and cutting unit (7) configured to move in a cutting cycle according to a forward stroke along a direction parallel to the advancement direction in the same direction as the conveyor means direction in order to perform the cutting of the moving object, and configured to move according to a return stroke subsequent to the forward phase, along a direction parallel to the advancement direction with a direction opposite to the conveyor means direction in order to return into the initial position of the cutting cycle. The cutting machine further comprises a processing unit (6) configured to generate a driving signal (Sazm) for controlling the movement of the driving and cutting unit with an acceleration trend wherein the maximum absolute value of the acceleration (ac-r) within the return stroke is smaller than the maximum absolute value of the acceleration (ac-a) within the forward stroke.