Electric CNC Press Brake

1.Why can electric bending machines achieve such high precision? This is inseparable from its driving principle: Direct drive, no intermediate variables: The all-electric bending machine uses a servo motor and a ball screw to directly drive the slider to move. This structure does not have the problems such as oil temperature changes, oil viscosity and leakage that exist in hydraulic systems, and these are precisely the main reasons for the precision drift of hydraulic presses. Closed-loop control: The system monitors the positions of the servo motor and the slider in real time through a high-resolution encoder and feeds the data back to the controller. Once a minor deviation is detected, the controller will immediately issue an instruction for correction, forming an accurate closed-loop control. No mechanical clearance: The precise ball screw and rigid structure design ensure an extremely small backlash, further guaranteeing positional stability.   2. Understand the accuracy indicators: positioning accuracy vs. repeat positioning accuracy When evaluating a bending machine, there are two related but distinct concepts: Positioning accuracy: It refers to the overall error between the actual position reached by the slider and the target position required by the instruction. It is more like an "absolute" precision. Repeat positioning accuracy: It refers to the consistency of the slider when it returns to the same target position in multiple attempts. This is a more important "relative" accuracy indicator. A vivid metaphor: Imagine shooting at a target. High positioning accuracy means that all bullet holes are concentrated near the aiming point (bullseye). High repeat positioning accuracy means that all bullet holes are closely clustered together, even if they may not be on the bullseye. For bending processing, the repeat positioning accuracy is often more important than the absolute positioning accuracy. Once the perfect bending position is found through the first piece's debugging, the machine must be able to precisely return to that position tens of thousands of times to ensure that the angles of all workpieces in mass production are consistent.   3. Factors affecting actual accuracy Even if the repeat positioning accuracy of the machine itself is very high, the following factors still need to be considered in actual production Eccentric loading processing: When the bending force is unevenly distributed at both ends of the worktable, it may cause slight torsional deformation. High-end electric bending machines will adjust the positions at both ends in real time through an automatic Y-axis compensation function to counteract this effect. Mold and machine tool rigidity: Any minor elastic deformation will affect the final outcome. Both the machine tool itself and the upper and lower dies used must have sufficient rigidity. Ambient temperature: Although the electric bending machine is not sensitive to temperature, extreme temperature changes in the workshop may still have a minor impact on the mechanical structure.   4. How to verify this indicator? When communicating with suppliers, you can ask questions like this to get reliable answers: May I ask what the exact repeat positioning accuracy listed in your official technical specification is? On what standards (such as ISO, JIS) is the test based?" Was this precision data measured in a cold or hot machine state? High-performance machines should maintain accuracy throughout the entire operating temperature range. Could you provide a third-party test report or demonstrate it on the spot during the test run? Summary ±0.0004 inches (±0.01 millimeters) can be regarded as the reference line for high-performance all-electric bending machines. Many top manufacturers can even offer an accuracy of ±0.0002 inches (±0.005 millimeters) or higher.   if you have more ideas, please contact us! Tel: +86 -18855551088 Email: Info@Accurl.com Whatsapp/Mobile: +86 -18855551088