Xinshida Motion Control System in the Application of Glass Polishing in the 3C Electronics Industry
2025-07-10
Xinshida Motion Control System in the Application of Glass Polishing in the 3C Electronics Industry
Project Background
Glass polishing is a process that uses physical abrasion to remove surface scratches or imperfections, restoring the glass’s smoothness and transparency. In the smartphone industry, polishing of front and back cover glasses—such as those used for screens, back covers, and camera lenses—is particularly critical. These types of glass are often made from high-alumina-silica materials or... Corning Gorilla Glass It needs to combine drop resistance, touch sensitivity, and 5G signal penetration.
Customer needs
Polishing removes scratches while maintaining the ultra-thin glass’s strength and ensuring uniformity of the curved edges, thereby preventing damage to coating layers (such as oleophobic coatings or AR anti-reflective films) and meeting the high aesthetic and functional demands of electronic devices.
Manual teaching is inefficient.
Traditional five-axis polishing relies on experience-based adjustments, resulting in significant positioning deviations at critical points on concave surfaces and easily causing chipping and scratches on the glass.
It's hard to convert a 2D drawing into a spatial trajectory.
Conventional CAM cannot automatically associate 2D CAD graphics with dual-rotating axis angles, resulting in poor trajectory-to-surface fit.
Complex modeling discourages users.
Software such as UG requires rebuilding 3D models and has a high learning curve.
Polishing Force Control Precision Challenge
The glass surface is complex, and traditional equipment struggles to precisely control polishing pressure, easily leading to chipped edges or uneven polishing.
Xinshida Solution
Scheme advantages
The “most powerful brain” for glass curved surface polishing: specialized CAM software
Trajectory code generation: Supports direct reading of DXF-format drawings and automatically generates five-axis联动 G-code through parametric settings, with automatic association of B/C-axis angles.
Perfect Control of Precision and Pressure: SC50 Integrated Display and Control PAC
RTCP (Rotating Tool Center Point) Algorithm: Dynamically compensates for the offset of the tool’s rotation center, eliminating trajectory errors in five-axis simultaneous control.
Real-time force control compensation: Dynamically adjusts polishing pressure based on the curvature of the glass surface to ensure uniform distribution of polishing force.
Xinshida SC50 High-Performance PAC
A Dance Between Speed and Stability: The Sintronic Ω6 Servo System
Microsecond-level response: Fast response speed and smooth polishing trajectory.
Scheme Composition
Associated products
SC50 Series High-Performance PAC
Singlina Ω6-A Servo Drive
Project Results
By optimizing the process flow, the process commissioning cycle has been shortened by 80%, significantly boosting our ability to respond promptly to customer needs. Product quality has also improved markedly, with the yield rate increasing from 99.3% to 99.7%. In terms of processing performance, we have achieved a leap from A-grade glass to A+ grade glass. A+ grade glass now meets the industry’s highest standards in optical performance, surface flatness, and scratch resistance.
*Data from user testing, comparing devices that do not use the RTCP (Rotating Tool Center Point) algorithm with those that do use a force-control algorithm.
