CNC machine tools are an important part of industrial development, and the requirements for machining accuracy are becoming increasingly stringent. In applications where there is slippage in the transmission mechanism or excessive lead screw backlash, a fully closed-loop control system can effectively avoid mechanical errors, providing extremely high control accuracy and reliability.
Working principle
The closed-loop principle involves adding a position feedback device, such as a grating ruler or magnetic grating, to the mechanism. During the movement of the servo receiving position commands from the system, the position information of the grating ruler/magnetic grating is used to determine the actual position of the machine, which can reduce the error of the mechanical transmission mechanism.
To meet the high standards and requirements of customers for machining accuracy, the Wuhan Maixin EP5-EC servo drive was used by a CNC machine tool company to support CNC machine tool equipment and complete its closed-loop application.
Process requirements
• The precision of the processed products is within ±0.002mm;
• Fast response and high stability;
• Long-term processing, continuous and stable operation.
System Solution
• Control system + 4 Maison EP5-EC servos
Standard dual slant-axis machine tool – four-axis X1/Y1, X2/Y2 machine tool
On-site/equipment photos
Solution advantages
High efficiency, double slant-axis machine tool, high processing and production efficiency.
• High precision: The grating ruler installed on the external load end directly measures the external load stroke, realizing full closed-loop control, reducing the impact of mechanical transmission backlash, reducing transmission errors caused by mechanical wear, and further ensuring the positioning accuracy of the machine terminal.
High stability, high reliability, and strong anti-interference capability.
Equipment Description EP5-EC
Voltage: AC 220V/380V
Power: 0.1kW~15kW
• Communication protocol: EtherCAT
• Synchronization jitter time: <1μs
• Communication cycle time: 125μs, 250μs, 500μs, 1ms, 2ms, 4ms cycle multiples
Supported operating modes: CSP, CSV, CST
• Supports grating ruler protocols: BISSC, ABZ
• Supported grating ruler brands: Fagor, Heidenhain, and most other grating manufacturers on the market.
