Buffered CNC Motion Control for Wireless Communication Dropouts
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Solution Overview
Problem
Conventional CNC wireless control systems for machine tools are prone to operational issues due to poor communication, leading to abnormal mechanical conditions, sudden shutdowns, and defects in machined products when network communication is poor.
Innovation Solution
A motion control system comprising a first controller, a second controller communicatively connected to the machine tool, and a buffer that stores machining commands, allowing the system to adjust operation speed and send deceleration commands during poor communication, preventing abnormal mechanical conditions and sudden shutdowns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a network mechanism is used for signal transmission in a CNC wireless control system, then the operator can remotely control the machine tool, but poor communication may cause the machine tool to operate abnormally or shut down suddenly
Solution Approach 1:
The buffer pre-stores multiple machining commands before they are executed by the machine tool. When communication occurs, the buffer releases pre-stored commands to maintain continuous operation, preventing sudden shutdowns and ensuring reliable machining despite network issues
Solution Approach 2:
The buffer acts as a cushion between the controller and machine tool, absorbing communication disruptions. By pre-storing commands in the buffer, the system creates a safety margin that prevents communication failures from directly impacting machine tool operation, thereby maintaining stability
2Productivity
If the machine tool operates at high speed during remote control, then productivity is improved, but communication disruptions may cause abnormal mechanical conditions such as cutting tool jitter
Solution Approach 1:
The buffer pre-stores machining commands that account for high-speed operation requirements. When communication is good, the machine tool executes commands at high speed from the buffer, maintaining productivity while the buffer ensures commands are properly sequenced to prevent mechanical instability
Solution Approach 2:
The system monitors buffer status and communication conditions, adjusting command release timing to maintain mechanical stability during high-speed operation. The buffer coordinates command execution with machine tool state feedback to prevent jitter and abnormal conditions
Data Source
AI summary
A motion control system and a motion control method are provided. The motion control method includes: sending a plurality of machining commands to a second controller by a first controller at a cloud; storing the plurality of machining commands in a buffer by the second controller; and operating the machine tool according to the plurality of machining commands stored in the buffer. As such, when poor communication occurs between the first controller and the second controller, the second controller causes the buffer to send a deceleration command to the machine tool so as to cause the machine tool to operate at a reduced speed, thereby avoiding unexpected motion such as sudden shutdown of the machine tool and damage to machined products.