I. Equipment Structure & Working Principle
Glass Fixation System
Glass is clamped between retractable pressure plates with PU/red rubber linings to prevent thin-glass breakage.
Clamping force must be precisely calibrated: Glass should be immovable by hand force — excessive force causes breakage, insufficient force affects precision⁸‧¹¹‧¹².
Grinding System
4-10 independently motorized grinding wheels (primarily diamond) arranged sequentially:
Roughing Wheels: Remove edge burrs, leaving 0.5-1mm allowance
Finishing Wheels: Refine edge profile
Polishing Wheels: Achieve mirror finish (e.g., C-bevel or 45° edges)³‧⁵‧¹³
Cooling & Conveyance
Recirculating water system continuously cools wheels to prevent thermal cracking.
Variable-frequency motor controls conveyor speed (typically 0-4 m/min); reduce to <1.5 m/min for thick glass⁶‧⁷‧¹¹.
II. Standard Operating Procedure
Pre-Operation Checks
Inspect wheel tightness, water flow, and wheel wear; replace/dress worn wheels⁶‧⁷.
Apply edge-protection tape to both glass surfaces; adjust guide rail spacing based on thickness⁴‧¹⁴.
Operators must wear cut-resistant gloves, goggles, and hard hats (mandatory for large glass)⁶‧⁷.
Grinding Process
Straight Edging:
Glass advances steadily along guides. Roughing wheels engage edges with water cooling → Finishing → Beveling → Final polishing³‧⁴.
Bevel Edging:
Adjust wheel head to 30°-45°; reduce speed to 0.5-3.5 m/min for angled grinding²‧¹³.
Parameter Control
III. Key Quality Control Points
Preventing Edge Chipping/Cracks
Caused by excessive grinding depth or insufficient cooling: Reduce feed speed, check water pressure⁹‧¹⁰.
“Sharpen” new wheels using scrap glass before formal use⁶‧⁷.
Dimensional Accuracy
Correct diagonal deviations by aligning feed-end guide rollers; replace worn rails periodically⁹‧¹⁵.
Regularly calibrate pressure plate levelness to prevent glass misalignment⁹.
Surface Finish Optimization
Dull edges/grinding marks: Rebalance grinding load across wheels; tighten conveyor belts¹⁰.
Burn marks: Check clogged coolant nozzles; avoid excessive single-pass grinding¹⁰.
IV. Common Troubleshooting
Tapered Edges: Caused by uneven foundation or worn conveyor blocks — Level machine base/replace entire chain⁹.
Incomplete End Polishing: Rear sprocket misalignment — Realign height/angle⁹.
Mid-Section Polishing Failure: Loose pressure plates causing glass sagging — Tighten clamping chains⁹.
Critical Safety Rules:
Never process cracked glass sheets⁷.
Do NOT open protective covers or adjust parameters during operation¹⁴.
