Cutting Speed Planning for Bend Precision and Continuous Motion
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Solution Overview
Problem
Conventional cutting speed planning for two-dimensional surface cutting often compromises processing precision due to bending routes, leading to reduced overall processing speed, as it requires frequent adjustments at bends which slow down the cutting process.
Innovation Solution
A cutting speed planning system comprising a graphic preprocessing engine, speed planning engines, and a speed determination engine that calculates reasonable maximum cutting speeds, adjusts stage times, and coordinates initial and terminal cutting speeds between routes to ensure precision and speed, using a simplified cutting route model and digital control system adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cutting speed is reduced to ensure processing precision at bends, then manufacturing precision is improved, but productivity deteriorates
Solution Approach 1:
The cutting route is divided into multiple route sections based on bend characteristics. The system identifies bend positions and segments the continuous cutting path into discrete sections, allowing different speed planning for each section. This segmentation enables high-speed cutting in straight sections while preparing for precision control at bends, resolving the contradiction between maintaining precision and preserving overall speed.
Solution Approach 2:
The system performs preliminary speed planning for each route section before actual cutting, pre-calculating optimal speeds and transition profiles. By planning speeds in advance and preparing deceleration/acceleration sequences before reaching bends, the system avoids abrupt speed changes during cutting, thereby maintaining precision at bends without significantly reducing overall processing speed.
2Manufacturing precision
If the cutting speed is frequently adjusted at bends, then manufacturing precision is improved, but productivity deteriorates
Solution Approach 1:
The system implements dynamic speed planning that continuously adapts cutting speed based on real-time route characteristics. Instead of fixed speed reductions at all bends, the system dynamically adjusts speeds according to bend radius, curvature, and position, allowing smoother transitions and maintaining higher speeds where precision requirements are lower, thus balancing precision and productivity.
Solution Approach 2:
The system changes speed parameters continuously and smoothly rather than making frequent abrupt adjustments. By implementing gradual deceleration before bends and gradual acceleration after bends, the system reduces the number and intensity of speed changes, minimizing their impact on overall processing speed while still achieving required precision at critical bend locations.
3Productivity
If the cutting route is simplified to straight lines, then productivity is improved, but manufacturing precision deteriorates
Solution Approach 1:
The system applies simplification selectively rather than universally. Straight sections of the cutting route are simplified to direct paths to maximize speed, while bend sections retain their original geometric complexity to ensure precision. This partial application of simplification allows the system to gain speed benefits without sacrificing the precision required at critical curved locations.
Data Source
AI summary
Provided is a cutting speed planning system including a graphic preprocessing engine, a first speed planning engine, an included angle calculation engine, a second speed planning engine and a speed determination engine. The graphic preprocessing engine substitutes a simplified cutting route for a plurality of short straight paths of a graphic path. The first speed planning engine calculates a reasonable maximum cutting speed of each cutting route. The included angle calculation engine calculates the included angle between two adjacent ones of the cutting routes. The second speed planning engine adjusts the terminal cutting speed and the initial cutting speed of the cutting routes. The speed determination engine performs speed planning on the cutting routes according to digital control system period time. A cutting speed planning method and a non-transitory storage medium are further provided.